Cold flow resistant compositions containing rubber and a block copolymer
42 claims: 42 independent, 0 dependent
- 1耐コールドフロー性組成物であって、 (a)ジエンゴムと、 (b)共役ジエン・モノビニルアレーンブロック共重合体と、 の混合物 を含み、 前記組成物の溶液粘度が、前記ジエンゴムの溶液粘度未満であり、 前記組成物のコールドフローが、前記ジエンゴムのコールドフロー未満であ り、 前記組成物が、固体であり、 前記組成物の溶媒含有量が1重量%未満である、 組成物。
- 2前記組成物が、ベールの形態である、請求項 1に 記載の組成物。
- 3前記ベールが、25°Cから45°Cの温度で1日間から12ヶ月にわたって、寸法的に安定である、請求項 2 に記載の組成物。
- 4前記ジエンゴムの前記コールドフローが、少なくとも25%であり、 前記組成物の前記コールドフローが、30%未満であり、 前記組成物の前記コールドフローが、前記ジエンゴムの前記コールドフローよりも少なくとも10パーセン テージポイント 低い、請求項1~ 3 のいずれか一項に記載の組成物。
- 5前記組成物の前記溶液粘度が、前記ジエンゴムの前記粘度よりも少なくとも10%低い、請求項1~ 4 のいずれか一項に記載の組成物。
- 6前記組成物の寸法的安定係数が、2より大きい、請求項1~ 5 のいずれか一項に記載の組成物。
- 7前記組成物が、前記組成物の総重量を基準として、約5~約50重量%の前記共役ジエン・モノビニルアレーンブロック共重合体を含み、前記共役ジエン・モノビニルアレーンブロック共重合体が、前記ブロック共重合体の前記総重量を基準として、約15~約95重量%のモノビニルアレーン単量体含量を有する、請求項1~ 6 のいずれか一項に記載の組成物。
- 8前記共役ジエン・モノビニルアレーンブロック共重合体が、少なくとも3個の連続する共役ジエンの混合型ブロックを含む、請求項1~ 7 のいずれか一項に記載の組成物。
- 9前記共役ジエン・モノビニルアレーンブロック共重合体が、共役ジエンブロック、モノビニルアレーンブロック、又は共役ジエン・モノビニルアレーン混合ブロックの任意の組み合わせから選択される少なくとも4個のブロックを含む、請求項1~ 7 のいずれか一項に記載の組成物。
- 10最初の2個のブロックが、モノビニルアレーンブロックであり、及び/又は、カップリング剤の前の最後のブロックが、共役ジエンブロックである、請求項 8~9 のいずれか一項に記載の組成物。
- 11前記共役ジエン・モノビニルアレーンブロック共重合体が、以下の式:i1-(D/A) m -i2-(D/A) n -i3-(D/A) p -i4-(D/A) q -i5-(D/A) r -Xを有するブロック構造を含み、式中、 Aが、0~50phrの範囲のモノビニルアレーンであり、 Dが、0~50phrの範囲の共役ジエン又は異なる共役ジエンの混合物であり、AとDとの合計が100部であり、 D/Aが、共役ジエン(複数可)とモノビニルアレーンの混合物であり、各ブロック中のD/Aの比が、同一又は異なり、0:50~50:0phrの範囲であり、 i1~i5が、独立して、新しい重合体鎖を開始させるための0~0.2phrの範囲の反応開始触媒であり、 m、n、p、q、及びrが、独立して、0以上から3以下の範囲の整数であり、 Xが、カップリング剤又は停止剤である、請求項1~ 7 のいずれか一項に記載の組成物。
- 12前記共役ジエン・モノビニルアレーンブロック共重合体が、以下のブロック構造の少なくとも1つを含み、 (a)i-S-S-i-S-B-X;(b)i-S-i-S-B-i-S-B-X;(c)i-S-i-S-(B/S)-i-S-B-X;(d)i-S-i-S-(B/S)-(B/S)-X;(e)i-S-i-S-(B/S)-(B/S)-B-X;(f)i-S-i-S-(B/S)-(B/S)-(B/S)-X;(g)i-S-i-S-(B/S)-(B/S)-(B/S)-B-X;(h)i-S-i-S-(B/S)-(B/S)-(B/S)-(B/S)-X;又は (i)i-S-i-S-(B/S)-(B/S)-(B/S)-(B/S)-B-X;式中、 Sはスチレンブロックであり、 Bは共役ジエンブロックであり、 B/Sは、共役ジエン・モノビニルアレーン混合ブロックであり、 各iは、独立して、新しい重合体鎖を開始させるための反応開始剤であり、 Xは、カップリング剤又は停止剤である、請求項1~ 7 のいずれか一項に記載の組成物。
- 13前記モノビニルアレーンが、スチレンであり、前記共役ジエンが、1,3-ブタジエンである、請求項1~ 12 のいずれか一項に記載の組成物。
- 14前記共役ジエン・モノビニルアレーンブロック共重合体が、スチレン・ブタジエンブロック共重合体を含み、前記ジエンゴムが、ポリブタジエンゴムを含む、請求項1~ 13 のいずれか一項に記載の組成物。
- 15前記 ポリブタジエンゴムが、 高シスポリブタジエンゴム であり 、60~95モル%のシス二重結合を含有する、請求項 14 に記載の組成物。
- 16ジエンゴムのコールドフロー及び溶液粘度を低減するための方法であって、 前記ジエンゴムを共役ジエン・モノビニルアレーンブロック共重合体と組み合わせて、耐コールドフロー性組成物を形成する工程を含み、 前記組成物の溶液粘度が、前記ジエンゴムの溶液粘度未満であり、 前記組成物のコールドフローが、前記ジエンゴムのコールドフロー未満である、方法。
- 17前記組成物が、固体である、請求項 16 に記載の方法。
- 18前記組成物 の溶媒含有量 が、 1重量%未満である 、請求項 16 又は 17 に記載の方法。
- 19前記組成物が、ベールの形態である、請求項 16~18 のいずれか一項に記載の方法。
- 20ジエンゴムのベールを貯蔵安定化するための方法であって、 共役ジエン・モノビニルアレーンブロック共重合体を前記ジエンゴムに添加し て混合し 、耐コールドフロー性組成物を形成する工程を含み、 前記組成物の溶液粘度が、前記ジエンゴムの溶液粘度未満であり、 前記組成物のコールドフローが、前記ジエンゴムのコールドフロー未満であ り、 前記組成物が、固体であり、 前記組成物の溶媒含有量が1重量%未満である、 方法。
- 21前記ベールが、25°Cから45°Cの温度で1日間から12ヶ月にわたって、寸法的に安定である、請求項 19又は20 に記載の方法。
- 22前記ジエンゴムの前記コールドフローが、少なくとも25%であり、 前記組成物の前記コールドフローが、30%未満であり、 前記組成物の前記コールドフローが、前記ジエンゴムの前記コールドフローよりも少なくとも10パーセン テージポイント 低い、請求項 16~21 のいずれか一項に記載の方法。
- 23前記組成物の前記溶液粘度が、前記ジエンゴムの前記粘度よりも少なくとも10%低い、請求項 16~22 のいずれか一項に記載の方法。
- 24前記組成物の寸法的安定係数が、2より大きい、請求項 16~23 のいずれか一項に記載の方法。
- 25前記組成物が、前記組成物の総重量を基準として、約5~約50重量%の前記共役ジエン・モノビニルアレーンブロック共重合体を含み、前記共役ジエン・モノビニルアレーンブロック共重合体が、前記ブロック共重合体の前記総重量を基準として、約15~約95重量%のモノビニルアレーン単量体含量を有する、請求項 16~24 のいずれか一項に記載の方法。
- 26前記共役ジエン・モノビニルアレーンブロック共重合体が、少なくとも3個の連続する共役ジエンの混合型ブロックを含む、請求項 16~25 のいずれか一項に記載の方法。
- 27前記共役ジエン・モノビニルアレーンブロック共重合体が、共役ジエンブロック、モノビニルアレーンブロック、又は共役ジエン・モノビニルアレーン混合ブロックの任意の組み合わせから選択される少なくとも4個のブロックを含む、請求項 16~25 のいずれか一項に記載の方法。
- 28最初の2個のブロックが、モノビニルアレーンブロックであり、及び/又は、カップリング剤の前の最後のブロックが、共役ジエンブロックである、請求項 26~27 のいずれか一項に記載の方法。
- 29前記共役ジエン・モノビニルアレーンブロック共重合体が、以下の式:i1-(D/A) m -i2-(D/A) n -i3-(D/A) p -i4-(D/A) q -i5-(D/A) r -Xを有するブロック構造を含み、式中、 Aが、0~50phrの範囲のモノビニルアレーンであり、 Dが、0~50phrの範囲の共役ジエン又は異なる共役ジエンの混合物であり、AとDとの合計が100部であり、 D/Aが、共役ジエン(複数可)とモノビニルアレーンの混合物であり、各ブロック中のD/Aの比が、同一又は異なり、0:50~50:0phrの範囲であり、 i1~i5が、独立して、新しい重合体鎖を開始させるための0~0.2phrの範囲の反応開始触媒であり、 m、n、p、q、及びrが、独立して、0以上から3以下の範囲の整数であり、 Xが、カップリング剤又は停止剤である、請求項 16~25 のいずれか一項に記載の方法。
- 30前記共役ジエン・モノビニルアレーンブロック共重合体が、以下のブロック構造の少なくとも1つを含み、 (a)i-S-S-i-S-B-X;(b)i-S-i-S-B-i-S-B-X;(c)i-S-i-S-(B/S)-i-S-B-X;(d)i-S-i-S-(B/S)-(B/S)-X;(e)i-S-i-S-(B/S)-(B/S)-B-X;(f)i-S-i-S-(B/S)-(B/S)-(B/S)-X;(g)i-S-i-S-(B/S)-(B/S)-(B/S)-B-X;(h)i-S-i-S-(B/S)-(B/S)-(B/S)-(B/S)-X;又は (i)i-S-i-S-(B/S)-(B/S)-(B/S)-(B/S)-B-X;式中、 Sはスチレンブロックであり、 Bは共役ジエンブロックであり、 B/Sは、共役ジエン・モノビニルアレーン混合ブロックであり、 各iは、独立して、新しい重合体鎖を開始させるための反応開始剤であり、 Xは、カップリング剤又は停止剤である、請求項 16~25 のいずれか一項に記載の方法。
- 31前記モノビニルアレーンが、スチレンであり、前記共役ジエンが、1,3-ブタジエンである、請求項 16~30 のいずれか一項に記載の方法。
- 32前記共役ジエン・モノビニルアレーンブロック共重合体が、スチレン・ブタジエンブロック共重合体を含み、前記ジエンゴムが、ポリブタジエンゴムを含む、請求項 16~31 のいずれか一項に記載の方法。
- 33前記 ポリブタジエンゴムが、 高シスポリブタジエンゴム であり 、60~95モル%のシス二重結合を含有する、請求項3 2に 記載の組成物。
- 34高衝撃重合体組成物であって、 (i)モノビニルアレーン系重合体と、 (ii)前記重合体中に分散した約1~約35重量%の粒子と、を含み、 前記粒子が、請求項1~ 15 のいずれか一項に記載の耐コールドフロー性組成物を含む、組成物。
- 35前記 耐コールドフロー性組成物 の少なくとも一部が、 (i)モノビニルアレーン系重合体 でグラフトされている、請求項3 4に 記載の組成物。
- 36前記高衝撃重合体組成物が、約3~約30重量%の前記耐コールドフロー性組成物を含んでいる粒子を含む、請求項 34又は35 に記載の組成物。
- 37前記高衝撃重合体組成物が、高衝撃ポリスチレンである、請求項 34~36 のいずれか一項に記載の組成物。
- 38前記モノビニルアレーン単量体が、スチレンであり、前記高衝撃重合体組成物が、アクリロニトリル・ブタジエン・スチレン重合体である、請求項 34~36 のいずれか一項に記載の組成物。
- 39前記モノビニルアレーン系重合体が、モノビニルアレーン単量体とメタクリレート単量体とから誘導された共重合体である、請求項 34~36 のいずれか一項に記載の組成物。
- 40前記メタクリレート単量体が、メチルメタクリレートである、請求項 39 に記載の組成物。
- 41前記高衝撃重合体組成物が、メチルメタクリレート・ブタジエン・スチレン重合体である、請求項 39~40 のいずれか一項に記載の組成物。
- 42前記モノビニルアレーン系重合体が、重合体の総重量を基準として、約55~約95重量%のモノビニルアレーン単量体含量を有する、請求項 34~41 のいずれか一項に記載の組成物。
Independent claims42
64 paragraphs, as filed
0001Reference of related application This application was filed as a PCT international patent application on March 8, 2013, and its disclosure is incorporated herein by reference in its entirety, a US patent application filed on May 8, 2012. It claims priority over No. 61 / 644,016.
0002Many commercial grade rubbers are shipped and stored in the form of solid slabs, often called veils. However, over time, especially at high temperatures, rubber veils can exhibit cold flow, revealing changes in bale dimensions. During shipping and / or long-term storage, and even when higher temperature conditions may be encountered, it is beneficial to make the rubber highly resistant to cold flow. Therefore, it is these objects that are the subject of the present invention.
0003The outline of the present invention is provided to introduce in a simplified form the selection of concepts further described in the embodiments for carrying out the following inventions. The outline of the present invention is not intended to identify the necessary or essential features of the alleged subject matter. Furthermore, the outline of the present invention is not intended to be used to limit the scope of the claimed subject matter.
<p num="0004"> Cold flow resistant and dimensionally stable compositions are disclosed and described herein, such compositions comprising (a) a diene rubber and (b) a conjugated diene monovinyl arene block copolymer. Can be done. These compositions can be characterized as having a solution viscosity that is less than the solution viscosity of the diene rubber and a cold flow that is less than the cold flow of the diene rubber.</p><p num="0005"> Another embodiment of the invention is aimed at a method for simultaneously reducing the cold flow and solution viscosity of the diene rubber, in which method the method combines the diene rubber with a conjugated diene monovinyl arene block copolymer. , Including the step of forming a cold flow resistant composition. The solution viscosity of this composition can be less than the solution viscosity of diene rubber, and the cold flow of this composition can be less than the cold flow of diene rubber.</p><p num="0006"> Embodiments of the present invention also aim for a method for storing and stabilizing a veil of diene rubber. One such method can include the step of adding a conjugated diene / monovinyl arene block copolymer to the diene rubber to form a cold flow resistant composition. The resulting cold flow composition can have both a corresponding solution viscosity of diene rubber and a solution viscosity less than cold flow and cold flow.</p><p num="0007"> Both the outline of the invention described above and the embodiments for carrying out the invention below provide examples, but these are merely exemplary. Therefore, the outline of the above-mentioned invention and the embodiment for carrying out the following invention should not be regarded as limiting. In addition to those described herein, features or variations may be provided. For example, a particular embodiment may be aimed at a combination and subcombination of various features described in the embodiments for carrying out the invention.</p>
0008Definition of terms To provide a clearer definition of the terms used herein, the following definitions are provided. Unless otherwise stated, the following definitions apply to this disclosure, where the terms are used herein, but not otherwise specified herein. Unless inconsistent with any other disclosure or definition, or obscuring or obscuring any claim to which this definition applies, the definition from IUPAC Compedium of Chemical Terminology, 2nd Edition (1997) applies. Can be done. To the extent that any definition or usage provided by any document incorporated herein by reference contradicts the definition or usage provided herein, it is provided herein. Definition or usage takes precedence.
0009With respect to the transitional terms or phrases in the claims, the transitional term "comprising, including", which is synonymous with "including, including," "containing, including," "having, having," or "characterized by," , Comprehensive or open-ended and does not exclude additional undescribed elements or method steps. The transition phrase "consist of" excludes any element, process or component not specified in the claims. The transition phrase "consisting essentially of" limits the scope of the claims to those that do not substantially affect the particular material or process and the fundamental and novel properties (s) of the claimed invention. To do. The claim of "consisting essentially of" is "consisting consisting of" It occupies the middle between closed claims written in the "of" format and fully open claims written in the "comprising" format. The description of a compound or composition as "consisting essentially of", which does not mean the opposite, should not be construed as "comprising," but the term applies. It is intended to describe the described constituents containing materials that do not significantly alter the composition or method. For example, a composition essentially consisting of a material typically comprises impurities and additives present in a commercially produced or commercially available sample of the described material. If the claims include different categories of features and / or features (eg, method steps, composition features, and / or characteristic features, and other possible features), transition terms, comprising, consisting essentially of, and const. of can be applied only to the category of features used, allowing different transition terms or clauses to be used with different features within the claims. For example, a method can include some described steps (and other undescribed steps), but consist of a particular material and other ingredients, or from a particular material and other ingredients. Compositions that become essential or contain specific materials as well as other ingredients and other undescribed ingredients can be utilized.
0010Thus, unless otherwise stated, compositions and methods are described in terms of "comprising," including various components or steps, while the compositions and methods are essentially derived from various components or steps. Can be "consisting essentially of" or "consisting of". For example, the cold flow resistant composition provided in one embodiment of the present invention may, or may consist essentially of, a diene rubber and a conjugated diene monovinyl arene block copolymer. is there.
0011The terms "a", "an", and "the" are intended to include more than one option, eg, at least one. For example, "a conjugated diene monovinylarene block copolymer", "a diene rubber", etc., unless otherwise specified, include one or a mixture or a combination of a plurality of conjugated diene / monovinylarene block copolymers, diene rubbers, etc. means.
0012As used herein, the term "polymer" is generally used to include homopolymers, copolymers, terpolymers, etc., while "copolymers", copolymers, terpolymers, etc. Etc. are commonly used to include. Therefore. "Polymer" and "copolymer" include any monomer and copolymer material derived from a co-monomer (s) disclosed herein.
0013As used herein, a "conjugated diene" is an organic compound containing a conjugated carbon-carbon double bond and often a total of 4-12 carbon atoms, such as 4-8 carbon atoms. Point to. Typical conjugated diene is 1,3-butadiene, 2-methyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 1,3- Examples include, but are not limited to, pentadiene, 3-butyl-1,3-octadiene, and mixtures thereof. For example, in some embodiments disclosed herein, the conjugated diene can be 1,3-butadiene. The unit of the polymer, which is derived from the polymerization of the conjugated diene monomer, is referred to as the "conjugated diene unit".
0014As used herein, a "monovinyl array" is a total of 8 ~, such as a single carbon-carbon double bond, at least one aromatic moiety, and often 8-12 carbon atoms. Refers to an organic compound containing 18 carbon atoms. Typical monovinyl arenes include styrene, α-methylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 2-ethylstyrene, 3-ethylstyrene, 4-ethylstyrene, 4-n-propyl. Styrene, 4-t-butyl styrene, 2,4-dimethyl styrene, 4-cyclohexyl styrene, 4-decyl styrene, 2-ethyl-4-benzyl styrene, 4- (4-phenyl-n-butyl) styrene, 1- Examples include, but are not limited to, vinyl naphthalene, 2-vinyl naphthalene, and mixtures thereof. For example, in some embodiments disclosed herein, the monovinyl arene can be styrene. The unit of the polymer, which is derived from the polymerization of the monovinyl arene monomer, is called the "monovinyl arene unit".
0015The "conjugated diene / monovinyl arene block copolymer" is a polymer containing a monovinyl arene unit and a conjugated diene unit. The polymer comprises one or more blocks, each block containing a monovinyl arene unit and / or a conjugated diene unit. Any particular block can include either or both of monovinyl arene units and conjugated diene units. If it contains only one type of unit, it can be called a "monoblock". If this includes both, it can be called a mixed block. Illustrated mixed blocks include, but are not limited to, random blocks, tapered blocks, stepwise blocks, or any other type of mixed block.
0016(a) The mole fraction of conjugated diene units in the first section of the block is higher than the mole fraction of conjugated diene units in the second section of the block (the second section of this block is of the block. A mixed block is "tapered" in both cases (closer to a given end) and (b) if condition (a) applies to virtually all sections of the block. Depending on the size of the section of interest, condition (a) may not apply to all sections, but if so, this condition will only apply at a near-accidental level.
0017A mixed block is "random" if the mole fraction of conjugated diene units and monovinyl arene units in a section of the block is substantially the same as the mole fraction of conjugated diene units and monovinyl arene units throughout the block. Is. This does not rule out the possibility of sections of blocks that have regularity (ie, appear non-randomly), but such regular sections typically exist only at a near-accidental level. Will.
0018Any method and material similar or equivalent to that described herein may be used in the practice or testing of the invention, but typical methods and materials are described herein. ..<u style="single"> The following [1] to [101] are all one form or one aspect of the present invention.</u><u style="single">[1]</u><u style="single"> Cold flow resistant composition</u><u style="single"> (a) Jien rubber and</u><u style="single"> (b) Conjugated diene / monovinyl arene block copolymer and</u><u style="single">Including</u><u style="single"> The solution viscosity of the composition is less than the solution viscosity of the diene rubber.</u><u style="single"> A composition in which the cold flow of the composition is less than the cold flow of the diene rubber.</u><u style="single">[2]</u><u style="single"> A method for reducing the cold flow and solution viscosity of diene rubber.</u><u style="single"> Including a step of combining the diene rubber with a conjugated diene monovinyl arene block copolymer to form a cold flow resistant composition.</u><u style="single"> The solution viscosity of the composition is less than the solution viscosity of the diene rubber.</u><u style="single"> A method in which the cold flow of the composition is less than the cold flow of the diene rubber.</u><u style="single">[3]</u><u style="single"> The composition or method according to [1] or [2], wherein the composition is a solid.</u><u style="single">[4]</u><u style="single"> The composition or method according to any one of [1] to [3], wherein the composition is a solid at 25 ° C.</u><u style="single">[5]</u><u style="single"> The composition or method according to any one of [1] to [4], wherein the composition is solid at 50 ° C.</u><u style="single">[6]</u><u style="single"> The composition or method according to any one of [1] to [5], wherein the composition is substantially solvent-free.</u><u style="single">[7]</u><u style="single"> The composition or method according to any one of [1] to [6], wherein the composition is in the form of a veil.</u><u style="single">[8]</u><u style="single"> A method for storing and stabilizing the veil of Jien rubber,</u><u style="single"> A step of adding a conjugated diene / monovinyl arene block copolymer to the diene rubber to form a cold flow resistant composition is included.</u><u style="single"> The solution viscosity of the composition is less than the solution viscosity of the diene rubber.</u><u style="single"> A method in which the cold flow of the composition is less than the cold flow of the diene rubber.</u><u style="single">[9]</u><u style="single"> The composition or method according to [7] or [8], wherein the veil is dimensionally stable at 25 ° C. for at least 1 day.</u><u style="single">[10]</u><u style="single"> The composition or method according to any one of [7] to [9], wherein the veil is dimensionally stable at 25 ° C. for at least one week.</u><u style="single">[11]</u><u style="single"> The composition or method according to any one of [7] to [10], wherein the veil is dimensionally stable at 25 ° C. for at least one month.</u><u style="single">[12]</u><u style="single"> The composition or method according to any one of [7] to [11], wherein the veil is dimensionally stable at 25 ° C. for at least 6 months.</u><u style="single">[13]</u><u style="single"> The composition or method according to any one of [7] to [12], wherein the veil is dimensionally stable at 35 ° C. for at least one day.</u><u style="single">[14]</u><u style="single"> The composition or method according to any one of [7] to [13], wherein the veil is dimensionally stable at 35 ° C. for at least one week.</u><u style="single">[15]</u><u style="single"> The composition or method according to any one of [7] to [14], wherein the veil is dimensionally stable at 35 ° C. for at least one month.</u><u style="single">[16]</u><u style="single"> The composition or method according to any one of [7] to [15], wherein the veil is dimensionally stable at 35 ° C. for at least 6 months.</u><u style="single">[17]</u><u style="single"> The composition or method according to any one of [7] to [16], wherein the veil is dimensionally stable at 45 ° C. for at least one day.</u><u style="single">[18]</u><u style="single"> The composition or method according to any one of [7] to [17], wherein the veil is dimensionally stable at 45 ° C. for at least one week.</u><u style="single">[19]</u><u style="single"> The composition or method according to any one of [7] to [18], wherein the veil is dimensionally stable at 45 ° C. for at least one month.</u><u style="single">[20]</u><u style="single"> The composition or method according to any one of [7] to [19], wherein the veil is dimensionally stable at 45 ° C for at least 6 months.</u><u style="single">[21]</u><u style="single"> The composition or method according to any one of [1] to [20], wherein the cold flow of the composition is at least 10 percent lower than the cold flow of the diene rubber.</u><u style="single">[22]</u><u style="single"> The composition or method according to any one of [1] to [21], wherein the cold flow of the composition is at least 20 percent lower than the cold flow of the diene rubber.</u><u style="single">[23]</u><u style="single"> The composition or method according to any one of [1] to [22], wherein the cold flow of the composition is at least 30 percent lower than the cold flow of the diene rubber.</u><u style="single">[24]</u><u style="single"> The composition or method according to any one of [1] to [23], wherein the cold flow of the composition is less than 30%.</u><u style="single">[25]</u><u style="single"> The composition or method according to any one of [1] to [24], wherein the cold flow of the composition is less than 10%.</u><u style="single">[26]</u><u style="single"> The composition or method according to any one of [1] to [25], wherein the cold flow of the composition is less than 5%.</u><u style="single">[27]</u><u style="single"> The composition or method according to any one of [1] to [26], wherein the cold flow of the composition is substantially 0.</u><u style="single">[28]</u><u style="single"> The composition or method according to any one of [1] to [27], wherein the cold flow of the diene rubber is at least 25%.</u><u style="single">[29]</u><u style="single"> The composition or method according to any one of [1] to [28], wherein the cold flow of the diene rubber is at least 40%.</u><u style="single">[30]</u><u style="single"> The composition or method according to any one of [1] to [29], wherein the cold flow of the diene rubber is at least 50%.</u><u style="single">[31]</u><u style="single"> The composition or method according to any one of [1] to [30], wherein the solution viscosity of the composition is at least 10% lower than the viscosity of the diene rubber.</u><u style="single">[32]</u><u style="single"> The composition or method according to any one of [1] to [31], wherein the solution viscosity of the composition is at least 25% lower than the viscosity of the diene rubber.</u><u style="single">[33]</u><u style="single"> The composition or method according to any one of [1] to [32], wherein the solution viscosity of the composition is at least 50% lower than the viscosity of the diene rubber.</u><u style="single">[34]</u><u style="single"> The composition or method according to any one of [1] to [33], wherein the solution viscosity of the composition is at least 75% lower than the viscosity of the diene rubber.</u><u style="single">[35]</u><u style="single"> The composition or method according to any one of [1] to [34], wherein the solution viscosity of the composition is at least 90% lower than the viscosity of the diene rubber.</u><u style="single">[36]</u><u style="single"> The composition or method according to any one of [1] to [35], wherein the dimensional stability factor of the composition is greater than 2.</u><u style="single">[37]</u><u style="single"> The composition or method according to any one of [1] to [36], wherein the dimensional stability factor of the composition is 3 or more.</u><u style="single">[38]</u><u style="single"> The composition or method according to any one of [1] to [37], wherein the dimensional stability factor of the composition is 4 or more.</u><u style="single">[39]</u><u style="single"> The composition or method according to any one of [1] to [38], wherein the dimensional stability factor of the composition is 5 or more.</u><u style="single">[40]</u><u style="single"> The item according to any one of [1] to [39], wherein the composition contains about 5 to about 50% by weight of the conjugated diene / monovinyl arene block copolymer based on the total weight of the composition. Composition or method of.</u><u style="single">[41]</u><u style="single"> The composition according to any one of [1] to [40], wherein the composition contains about 10 to about 40% by weight of the conjugated diene / monovinyl arene block copolymer based on the total weight of the composition. The composition or method described.</u><u style="single">[42]</u><u style="single"> In any one of [1] to [41], the composition contains about 15 to about 30% by weight of the conjugated diene / monovinyl arene block copolymer based on the total weight of the composition. The composition or method described.</u><u style="single">[43]</u><u style="single"> In any one of [1] to [42], the composition contains about 15 to about 25% by weight of the conjugated diene / monovinyl arene block copolymer based on the total weight of the composition. The composition or method described.</u><u style="single">[44]</u><u style="single"> [1] to [43], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 15 to about 95% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[45]</u><u style="single"> [1] to [44], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 25 to about 95% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[46]</u><u style="single"> [1] to [45], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 25 to about 50% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[47]</u><u style="single"> [1] to [46], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 25 to about 45% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[48]</u><u style="single"> [1] to [47], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 50 to about 95% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[49]</u><u style="single"> [1] to [48], wherein the conjugated diene / monovinyl arene block copolymer has a monovinyl arene monomer content of about 65 to about 80% by weight based on the total weight of the block copolymer. The composition or method according to any one of the following items.</u><u style="single">[50]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a bonded conjugated diene / monovinyl arene block copolymer.</u><u style="single">[51]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a non-bonded conjugated diene / monovinyl arene block copolymer.</u><u style="single">[52]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a bonded monomodal conjugated diene / monovinyl arene block copolymer.</u><u style="single">[53]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a non-bonded monomodal conjugated diene / monovinyl arene block copolymer.</u><u style="single">[54]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a bonded multimodal conjugated diene / monovinyl arene block copolymer.</u><u style="single">[55]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer contains a non-binding multimodal conjugated diene / monovinyl arene block copolymer.</u><u style="single">[56]</u><u style="single"> The composition or method according to [54] or [55], wherein the multimodal conjugated diene monovinyl arene block copolymer contains at least two modes.</u><u style="single">[57]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises at least two blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1]-[49]. ] The composition or method according to any one of the following items.</u><u style="single">[58]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises at least three blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1]-[49]. ] The composition or method according to any one of the following items.</u><u style="single">[59]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises at least 4 blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1]-[49]. ] The composition or method according to any one of the following items.</u><u style="single">[60]</u><u style="single"> The composition or method according to any one of [57] to [59], wherein the first two blocks are monovinyl arene blocks.</u><u style="single">[61]</u><u style="single"> The composition or method according to any one of [57] to [60], wherein the last block prior to the coupling agent is a conjugated diene block.</u><u style="single">[62]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises 3 to 10 blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1] to [ 49] The composition or method according to any one of the following paragraphs.</u><u style="single">[63]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises 4 to 7 blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1] to [ 49] The composition or method according to any one of paragraphs.</u><u style="single">[64]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises 4 to 5 blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or conjugated diene / monovinyl arene mixed blocks [1] to [ 49] The composition or method according to any one of paragraphs.</u><u style="single">[65]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer has the following formula:</u><u style="single">i1- (D / A)</u><sub><u style="single">m</u></sub><u style="single">-i2- (D / A)</u><sub><u style="single">n</u></sub><u style="single">-i3- (D / A)</u><sub><u style="single">p</u></sub><u style="single">-i4- (D / A)</u><sub><u style="single">q</u></sub><u style="single">-i5- (D / A)</u><sub><u style="single">r</u></sub><u style="single">-X</u><u style="single">Including the block structure having</u><u style="single"> A is a monovinyl arene in the range of 0 to 50 phr,</u><u style="single"> D is a conjugated diene in the range 0-50 phr or a mixture of different conjugated diene, with a total of 100 parts of A and D.</u><u style="single"> The D / A is a mixture of conjugated diene (s) and monovinyl arene, and the ratio of D / A in each block is the same or different and ranges from 0:50 to 50: 0 phr.</u><u style="single"> i1 to i5 are reaction initiation catalysts in the range of 0 to 0.2 phr for independently initiating new polymer chains.</u><u style="single"> m, n, p, q, and r are independently integers in the range 0 to 3</u><u style="single"> The composition or method according to any one of [1] to [49], wherein X is a coupling agent or a terminator.</u><u style="single">[66]</u><u style="single"> The conjugated diene / monovinyl arene block copolymer comprises at least one of the following block structures:</u><u style="single"> (a) iSSiSBX;</u><u style="single"> (b) iSiSBiSBX;</u><u style="single"> (c) iSiS- (B / S) -iSBX;</u><u style="single"> (d) iSiS-(B / S)-(B / S) -X;</u><u style="single"> (e) iSiS-(B / S)-(B / S) -BX;</u><u style="single"> (f) iSiS-(B / S)-(B / S)-(B / S) -X;</u><u style="single"> (g) iSiS-(B / S)-(B / S)-(B / S) -BX;</u><u style="single"> (h) iSiS-(B / S)-(B / S)-(B / S)-(B / S) -X; or</u><u style="single"> (i) iSiS-(B / S)-(B / S)-(B / S)-(B / S) -BX;</u><u style="single">During the ceremony</u><u style="single"> S is a styrene block,</u><u style="single"> B is a conjugated diene block,</u><u style="single"> B / S is a conjugated diene / monovinyl arene mixed block,</u><u style="single"> Each i is a reaction initiator for independently initiating a new polymer chain,</u><u style="single"> The composition or method according to any one of [1] to [49], wherein X is a coupling agent or a terminator.</u><u style="single">[67]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer comprises at least three consecutive conjugated diene / monovinyl arene mixed blocks.</u><u style="single">[68]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer comprises at least three consecutive conjugated diene / monovinyl arene tapered mixed blocks.</u><u style="single">[69]</u><u style="single"> The composition or method according to any one of [1] to [49], wherein the conjugated diene / monovinyl arene block copolymer comprises at least three consecutive conjugated diene / monovinyl arene block mixed blocks.</u><u style="single">[70]</u><u style="single"> The composition or method according to any one of [1] to [69], wherein the monovinyl arene contains 8 to 18 carbon atoms.</u><u style="single">[71]</u><u style="single"> The composition or method according to any one of [1] to [70], wherein the monovinyl arene is styrene.</u><u style="single">[72]</u><u style="single"> The composition or method according to any one of [1] to [71], wherein the conjugated diene contains 4 to 12 carbon atoms.</u><u style="single">[73]</u><u style="single"> The composition or method according to any one of [1] to [72], wherein the conjugated diene is butadiene.</u><u style="single">[74]</u><u style="single"> The composition or method according to any one of [1] to [73], wherein the conjugated diene is 1,3-butadiene.</u><u style="single">[75]</u><u style="single"> The composition or method according to any one of [1] to [74], wherein the conjugated diene / monovinyl arene block copolymer contains a styrene / butadiene block copolymer.</u><u style="single">[76]</u><u style="single"> The composition or method according to any one of [1] to [75], wherein the diene rubber contains a polybutadiene rubber.</u><u style="single">[77]</u><u style="single"> The composition or method according to any one of [1] to [76], wherein the diene rubber contains a high cispolybutadiene rubber.</u><u style="single">[78]</u><u style="single"> The composition or method according to [77], wherein the high cis polybutadiene rubber contains 60-95 mol% cis double bonds.</u><u style="single">[79]</u><u style="single"> The composition or method according to any one of [1] to [76], wherein the diene rubber contains a low cispolybutadiene rubber.</u><u style="single">[80]</u><u style="single"> The composition or method according to [79], wherein the low cis polybutadiene rubber contains 20-60 mol% of cis double bonds.</u><u style="single">[81]</u><u style="single"> The composition or method according to any one of [1] to [75], wherein the diene rubber contains a diene monovinyl arene rubber.</u><u style="single">[82]</u><u style="single"> The composition or method according to [81], wherein the diene monovinyl arene rubber contains up to 40% by weight of styrene.</u><u style="single">[83]</u><u style="single"> High impact polymer composition</u><u style="single"> (i) Monovinyl arene-based polymer and</u><u style="single"> (ii) Containing about 1 to about 35% by weight of particles dispersed in the polymer.</u><u style="single"> A composition in which the particles include the cold flow resistant composition according to any one of [1] to [82].</u><u style="single">[84]</u><u style="single"> The composition according to [83], wherein at least a part of the monovinyl arene-based polymer is grafted with the cold flow resistant composition.</u><u style="single">[85]</u><u style="single"> The composition according to [83] or [84], wherein the high impact polymer composition contains particles containing about 3 to about 30% by weight of the cold flow resistant composition.</u><u style="single">[86]</u><u style="single"> The composition according to [83] or [84], wherein the high impact polymer composition comprises particles containing about 4 to about 25% by weight of the cold flow resistant composition.</u><u style="single">[87]</u><u style="single"> The composition according to [83] or [84], wherein the high impact polymer composition comprises particles containing about 8 to about 18% by weight of the cold flow resistant composition.</u><u style="single">[88]</u><u style="single"> The composition according to any one of [83] to [87], wherein the monovinyl arene-based polymer contains polystyrene.</u><u style="single">[89]</u><u style="single"> The composition according to any one of [83] to [88], wherein the high-impact polymer composition is high-impact polystyrene.</u><u style="single">[90]</u><u style="single"> The composition according to any one of [83] to [87], wherein the monovinyl arene-based polymer is a copolymer derived from a monovinyl arene monomer and an acrylic monomer.</u><u style="single">[91]</u><u style="single"> The composition according to [90], wherein the monovinyl arene-based polymer has a monovinyl arene monomer content of about 55 to about 95% by weight based on the total weight of the polymer.</u><u style="single">[92]</u><u style="single"> The composition according to [90], wherein the monovinyl arene-based polymer has a monovinyl arene monomer content of about 65 to about 85% by weight based on the total weight of the polymer.</u><u style="single">[93]</u><u style="single"> The composition according to any one of [90] to [92], wherein the monovinyl arene monomer is styrene.</u><u style="single">[94]</u><u style="single"> The composition according to any one of [90] to [93], wherein the acrylic monomer is acrylonitrile.</u><u style="single">[95]</u><u style="single"> The composition according to any one of [90] to [94], wherein the high-impact polymer composition is an acrylonitrile-butadiene-styrene polymer.</u><u style="single">[96]</u><u style="single"> The composition according to any one of [83] to [87], wherein the monovinyl arene-based polymer is a copolymer derived from a monovinyl arene monomer and a methacrylate monomer.</u><u style="single">[97]</u><u style="single"> The composition according to [96], wherein the monovinyl arene-based polymer has a monovinyl arene monomer content of about 55 to about 95% by weight based on the total weight of the polymer.</u><u style="single">[98]</u><u style="single"> The composition according to [96], wherein the monovinyl arene-based polymer has a monovinyl arene monomer content of about 65 to about 85% by weight based on the total weight of the polymer.</u><u style="single">[99]</u><u style="single"> The composition according to any one of [96] to [98], wherein the monovinyl arene monomer is styrene.</u><u style="single">[100]</u><u style="single"> The composition according to any one of [96] to [99], wherein the methacrylate monomer is methyl methacrylate.</u><u style="single">[101]</u><u style="single"> The composition according to any one of [96] to [100], wherein the high-impact polymer composition is a methyl methacrylate / butadiene / styrene polymer.</u>
0019All publications and patent documents described herein describe and disclose, for example, the structures and methodologies described in these publications that may be used with the inventions described herein. For purposes, the whole is incorporated herein. Publications discussed throughout the text are provided only because their disclosure is prior to the filing date of this application. Nothing described herein should be considered an approval that the inventor has not been entitled to advance the date of such disclosure by the preceding invention.
0020The applicant discloses several scopes in the present invention. When the applicant discloses or asserts any kind of range, the applicant's intention is to include the end point of the range and any subset and the combination of the subranges contained therein, such range reasonably included. To independently disclose or claim each possible number obtained. A typical example relates to the following weight% of conjugated diene monovinyl arene block copolymer in the cold flow resistant composition according to the embodiment of the present invention. For example, by disclosure that the composition comprises from about 15 to about 30% by weight of a conjugated diene monovinyl arene block copolymer (based on the total weight of the composition), the applicant has this weight% of about 15, Equal to about 16, about 17, about 18, about 19, about 20, about 21, about 22, about 23, about 24, about 25, about 26, about 27, about 28, about 29, or about 30% by weight Intended to describe what you get. In addition, this weight% can be in any range of about 15 to about 30% by weight (eg, this weight% can be in the range of about 15 to about 25% by weight), which is also about. Includes any combination in the range between 15% and about 30% by weight. Similarly, all other scopes disclosed herein should be construed in a manner similar to this representative example.
0021If, for any reason, the applicant chooses to insist on a disclosure that is by no means sufficient, for example, considering references that the applicant may not know at the time of filing this application, the applicant may, in accordance with scope, or arbitrarily. You reserve the right to condition or exclude any individual member of any such group, including any subrange or combination of subranges within a group that may be claimed in a similar manner. Further, if for any reason the applicant chooses to insist on a disclosure that is by no means sufficient, for example, considering references that the applicant may not know at the time of filing the application, the applicant may choose any individual. You have the right to condition or exclude substituents, analogs, compounds, ligands, structures, or groups thereof, or any member of the claimed group.
0022The present disclosure provides a cold flow resistant composition containing diene rubber, a method for simultaneously reducing both cold flow and solution viscosity of diene rubber, and a method for storing and stabilizing the veil of diene rubber.
0023Cold flow resistant composition Some embodiments of the present invention are aimed at cold flow resistant compositions that can include (a) a diene rubber and (b) a conjugated diene monovinyl arene block copolymer, while other embodiments are Aimed at methods for reducing the cold flow and solution viscosity of diene rubber, such methods combine diene rubber with a conjugated diene monovinyl arene block copolymer (eg, blend, mix, blend, etc.). , Including the step of forming a cold flow resistant composition. In these and other embodiments disclosed herein, cold flow resistant compositions may have both the corresponding solution viscosities of diene rubber and solution viscosities less than cold flow and cold flow. In general, any of the features of the compositions and methods disclosed herein (eg, diene rubber, cold flow of diene rubber, solution viscosity of diene rubber, conjugated diene monovinyl arene block copolymers, in compositions. Relative amounts of diene rubber and conjugated diene monovinyl arene block copolymers, cold flow of compositions, solution viscosity of compositions, etc.) are described independently herein, and these features are described in the disclosed compositions and. It can be used in any combination to further illustrate the method.
0024Conjugated diene monovinyl arene block copolymers are combined with diene rubber (blended, mixed, blended, etc.) by any method known to those skilled in the art to form cold flow resistant compositions. Further, as will be appreciated by those skilled in the art, the conjugated diene monovinyl arene block copolymer is bonded to the diene rubber during and / or at various steps after the rubber forming process. For example, but not limited to these, conjugated diene / monovinyl array block copolymers can be fed to rubber processing extruders prior to bale packaging, and conjugated diene / monovinyl array block copolymers. , The conjugated diene monovinyl array block copolymer can be added to the finished rubber cement, the conjugated diene monovinyl array block copolymer can be blended with the rubber in a steam stripper, and / or the conjugated diene monovinyl array block copolymer can be added. Can be compounded with rubber, and then processed in a conventional manner.
0025Although not limited to these, certain embodiments intended in the present invention are aimed at cold flow resistant compositions in which the composition is in solid form. For example, in one embodiment, the composition can be solid at a temperature of 25 ° C (eg, approximately ambient temperature). In another embodiment, the composition can be solid at 40 ° C, 50 ° C, or 75 ° C. In yet another embodiment, the composition can be solid at 100 ° C, 125 ° C, or 150 ° C or even at higher temperatures. According to the present disclosure, cold flow resistant compositions can often be described as solids, which means that they include high viscosity liquids, as will be recognized by those skilled in the art. One particular solid form of the cold flow resistant composition can be a veil, which generally refers to a rubber slab or block, which often weighs 20-50 kg (eg, about). It is possible to range in weight from 30 to 31 kg) (but not limited to these). Many commercially available diene rubber materials are shipped and / or stored in the form of veils.
0026In addition to or in lieu of this, the cold flow composition may be substantially solvent-free. In this context, "substantially free" means that the composition (ie, containing a diene rubber and a conjugated diene monovinyl arene block copolymer) is 1% by weight based on the total weight of the composition. Means that it contains less than a solvent. For example, the composition can contain less than 0.5% by weight solvent, less than 0.25% by weight solvent, less than 0.1% by weight solvent, less than 0.05% by weight solvent, or less than 0.01% by weight solvent. Thus, substantially solvent-free coldflow compositions generally include diene rubber and conjugated diene in solvents (or monomers) such as, for example, toluene, xylene, benzene, ethylbenzene, styrene, methylstyrene, acrylonitrile. -Does not include a mixture of monovinyl arene block copolymers.
0027According to another embodiment of the invention, a method for storing and stabilizing a veil of diene rubber is provided herein, in which a conjugated diene monovinyl arene block copolymer is added to the diene rubber to withstand it. Including the step of forming a cold-flowing composition. The resulting cold-flow resistant composition can have both a corresponding solution viscosity of the diene rubber and a solution viscosity that is less than cold flow and cold flow. In this embodiment, "stabilizing the storage" of a rubber bale means, for example, stabilizing the bale during long-term storage at ambient temperature or high temperature, stabilizing the bale during shipment at ambient temperature or high temperature ( For example, it means to include (stabilize transportation) and the like. As mentioned earlier, the features of this method of storing and stabilizing the diene rubber veil disclosed herein (eg, diene rubber, diene rubber cold flow, diene rubber solution viscosity, conjugated diene monovinyl arene block co-weight). Relative amounts of diene rubber and conjugated diene / monovinyl arene block copolymers in the composition, cold flow of the composition, viscosity of the composition, etc.) are described independently herein and these features are disclosed. It can be used in any combination to further illustrate the storage stabilization method.
0028The veils disclosed herein can contain cold flow resistant compositions such as diene rubber and conjugated diene monovinyl arene block copolymers, which are compared to veils containing only diene rubber. Thus, it has improved dimensional stability over a wide range of temperatures and periods. To describe the bale as "dimensionally stable" means that the difference in cross-sectional area of the bottom surface of the bale from the start to the end of the time / temperature conditions is within +/- 10%. In one embodiment, for example, the cold flow resistant veil is at 25 ° C. for at least 1 day, or at least 1 week, or at least 1 month, or at least 6 months, or at least 1 day to up to 12 months. It can be dimensionally stable. In another embodiment, the veil is dimensionally stable at 35 ° C for at least 1 day, or at least 1 week, or at least 1 month, or at least 6 months, or at least 1 day to up to 12 months. Can be. In a further embodiment, the veil is dimensionally stable at 45 ° C for at least 1 day, or at least 1 week, or at least 1 month, or at least 6 months, or at least 1 day to up to 12 months. Can be. In yet another embodiment, the veil is dimensionally at 60 ° C. for at least 1 day, or at least 1 week, or at least 1 month, or at least 6 months, or at least 1 day to up to 12 months. Can be stable.
0029A feature of the compositions and methods disclosed herein can be an improvement in the cold flow performance of the composition as compared to diene rubber alone. For example, a cold flow resistant composition may have a "cold flow" that is less than the corresponding cold flow of the diene rubber. Cold flow is measured according to the procedure described in US Pat. No. 3,758,656, which is described herein below, and which is incorporated herein by reference in its entirety. Many commercially available diene rubbers can have a high measured cold flow of at least 25%, at least 30%, at least 35%, at least 40%, or at least 50%, and in some cases 60-70%. Such rubber materials are not dimensionally stable over a wide range of temperatures and periods. Cold flow resistant compositions, on the other hand, may have very low measured cold flow percent of, for example, less than 30%, less than 25%, less than 20%, less than 15%, less than 10%, or less than 5%. .. Moreover, in certain embodiments, the cold flow of this composition can be less than 1%, or substantially zero (ie, no measurable cold flow).
0030The improvement in cold flow of the composition compared to that of diene rubber can be determined by the difference between the measured cold flow of the composition and the measured cold flow of diene rubber. Cold flow tests are performed on the same equipment / equipment under the same test procedures / conditions. In one embodiment, the cold flow of the composition may be at least 10 percent lower than the cold flow of the diene rubber (eg, up to 70 percent lower, or up to 60 percent lower, or up to 50 percent lower, or maximum. 40 percent lower). In another embodiment, the cold flow of the composition may be at least 20 percent lower than the cold flow of diene rubber. Moreover, in another embodiment, the cold flow of the composition may be at least 30 percent lower than the cold flow of diene rubber. As an example, if the measured cold flow of the composition is 13 percent and the measured cold flow of diene rubber is 47 percent, then the cold flow of the composition is at least 30 more than the cold flow of diene rubber. Percentage points will be lower (47% -13% = 34%).
0031In general, previous efforts to improve the cold flow performance of diene rubber (eg, less cold flow) resulted in higher viscosities. For example, reducing the cold flow of a diene rubber may often require an increase in the viscosity of the diene rubber, or an increase in the viscosity of a formulation containing the diene rubber. In some embodiments, reducing the cold flow of the diene rubber may necessarily involve introducing a branch into the diene rubber or blending the diene rubber with a branched material. For example, reducing the cold flow of diene rubber can involve the use of polyfunctional monomers such as divinylbenzene, or the introduction of cross-linking. However, these methods often increase the viscosity of formulations containing diene rubber. However, unexpectedly, according to the present invention, compositions with improved cold flow performance (eg, less cold flow) can also have a solution viscosity that is less than the viscosity of the diene rubber. Solution viscosity tests are performed on the same equipment / equipment under the same test procedures / conditions. Although not bound by theory, the applicant believes that lower viscosities can be beneficial in the treatment and formation of high impact polymer compositions such as high impact polystyrene (HIPS). In some embodiments, the solution viscosity of the composition may be at least 10% lower than the solution viscosity of diene, while in other embodiments the solution viscosity of this composition is at least 25 higher than the solution viscosity of diene rubber. % May be low. Furthermore, in other embodiments, the solution viscosity of the composition is at least 40%, at least 50%, at least 60%, at least 75%, at least 85%, at least 90%, at least 10% and maximum of the solution viscosity of the diene rubber. It may be 99%, at least 25% up to 98%, or at least 40% up to 95% lower. As an example, the measured solution viscosity of the composition is 700 cP and the measured solution viscosity of diene rubber is 5,
0032Cold flow resistant compositions, but not limited to these, can often contain from about 5 to about 50% by weight of conjugated diene monovinyl arene block copolymers. This% by weight is based on the total weight of the composition. Suitable ranges for% by weight of the conjugated diene / monovinyl arene block copolymer based on the total weight of the composition include, but are not limited to, the following ranges: about 10 to about 40% by weight, About 15 to about 40% by weight, about 10 to about 30% by weight, about 15 to about 30% by weight, about 10 to about 25% by weight, or about 15 to about 25% by weight, etc. Specific amounts of conjugated diene monovinyl arene block copolymers utilized in the composition include desired cold flow properties, desired viscosities, predicted storage / shipping temperature and time conditions, diene rubber grades, conjugated diene monovinyls. It may depend on the grade of the arene block copolymer, other variables, and so on.
0033Another feature of the compositions and methods disclosed herein can be a dimensional stability factor (DSF) greater than 2. This DSF is measured for Examples 75-90 according to the procedure described below and uses data from an extended 16-hour cold flow test. DSF is the ratio of the stress of the composition after a 16 hour cold flow test to the stress of a standard single bale of rubber. Using the test procedures described herein, the maximum DSF is approximately 6.4 (ie, there is no measurable cold flow within 16 hours). In some embodiments, the disclosed cold flow resistant compositions may have a DSF of 2.5 or greater, or 3.0 or greater, or 2.5 to about 6.4, or 3.0 to about 6.4, while others. In embodiments, the disclosed cold flow resistant compositions may have a DSF of 3.5 or higher, 4.0 or higher, 4.5 or higher, 5.0 or higher, 4.0 to about 6.4, or 5.0 to about 6.4.
0034Conjugated diene / monovinyl arene block copolymer Consistent with the embodiments disclosed herein, the addition of the conjugated diene / monovinyl arene block copolymer to the diene rubber is greater than that of the diene rubber in the absence of the conjugated diene / monovinyl arene block copolymer. Compositions with low cold flow and low solution viscosity can be obtained. Certain suitable conjugated diene monovinyl arene block copolymers that can be used in various embodiments of the invention, but not limited to these, are U.S. Pat. Nos. 3,639,517, 6,096,828, 6,420,486. No. 6,444,755, No. 6,835,778, No. 7,037,980, No. 7,193,014, and No. 7,875,678 (these disclosures are incorporated herein by reference in their entirety); 2006/0089457, 2007/0173605, and 2008/0134642, the disclosures of which are incorporated herein by reference in their entirety.
0035The relative amounts of conjugated diene and monovinyl arene in the block copolymers utilized in the composition are the desired cold flow properties, the desired viscosity, the expected storage / shipping temperature and time conditions, the grade of the diene rubber, in the composition. It can depend on many variables such as the amount of conjugated diene monovinyl arene block copolymer used in, and other variables. However, this conjugated diene-monovinyl arene block copolymer is typically about 15 to about 95% by weight, or about 25 to about 95% by weight, based on the total weight of the (final) block copolymer. It may have a monovinyl arene monomer content. In some embodiments, the conjugated diene can be the major component, and the conjugated diene monovinyl arene block copolymer is about 20 to about 50% by weight of the monovinyl arene monopolymer based on the total weight of the block copolymer. Polymer content, about 25 to about 50% by weight of monovinyl arene monomer content, about 20 to about 45% by weight of monovinyl arene monomer content, or about 25 to about 45% by weight of monovinyl arene monomer content. Can have. In other embodiments, the monovinyl arene may be the major component, and the conjugated diene-monovinyl arene block copolymer is about 50 to about 95% by weight of the monovinyl arene monomer based on the total weight of the block copolymer. It has a content of about 50 to about 80% by weight of monovinyl arene monomer content, about 55 to about 85% by weight of monovinyl arene monomer content, or about 65 to about 80% by weight of monovinyl arene monomer content. obtain.
0036In one embodiment of the invention, the conjugated diene / monovinyl arene block copolymer can include a non-bonded conjugated diene / monovinyl arene block copolymer. Non-bonded block copolymers can often be referred to in the art as stop copolymers or quench copolymers. In other embodiments, the conjugated diene / monovinyl array block copolymer can comprise a non-binding monomodal conjugated diene / monovinyl array block copolymer, or the block copolymer is non-linked. It is possible to include a bound multimodal conjugated diene monovinyl array block copolymer.
0037In one embodiment of the invention, the conjugated diene / monovinyl array block copolymer may include a coupled conjugated diene / monovinyl array block copolymer, and the conjugated diene / monovinyl array block copolymer may further contain the conjugated diene / monovinyl array block copolymer. , A bound monomodal conjugated diene / monovinyl array block copolymer, or a bound multimodal conjugated diene / monovinyl array block copolymer. In some embodiments, the block copolymer can be produced by binding two different living polymer chains produced by at least two separate charges of the reaction initiator.
0038In one embodiment, the conjugated diene / monovinyl arene block copolymer can include a multimodal conjugated diene / monovinyl arene block copolymer containing at least two modes. In another embodiment, the block copolymer can include at least two blocks selected from any combination of conjugated diene blocks, monovinyl arene blocks, or mixed blocks of conjugated diene and monovinyl arenes. is there. Alternatively, the block copolymer may be at least 3 blocks, at least 4 blocks, or at least 5 selected from any combination of conjugated diene, blocks, monovinyl arene blocks, or mixed blocks of conjugated diene and monovinyl arenes. It is possible to include one block. For example, a conjugated diene / monovinyl arene block copolymer is selected from 3 to 10 blocks, 4 to 7 blocks selected from any combination of a conjugated diene block, a monovinyl arene block, or a mixed block of conjugated diene and monovinyl arene. It can contain blocks, or 4-5 blocks. In these and other embodiments, the first two blocks can be monovinyl arene blocks, and in addition to or instead, the last block prior to the coupling agent can be a conjugated diene block. According to this disclosure, repetitive blocks with intervention of reaction initiator are not considered as one block. Similarly, repeated mixed blocks are not considered a single block.
0039In certain embodiments, the block copolymer can include multiple mixed conjugated diene monovinyl arene blocks, each of which is about 0.05 to about 0.33, about 0.6. It is possible to contain conjugated diene units and monovinyl arene units having a weight ratio of conjugated diene units to monovinyl arene units in the range of ~ about 0.28, or about 0.08 to about 0.26.
0040Further contemplated herein are block copolymers that may include random blocks, tapered blocks, or mixed conjugated diene monovinyl arene blocks selected from combinations thereof. For example, in one embodiment, the conjugated diene / monovinyl arene block copolymer can include at least three contiguous mixed blocks of conjugated diene / monovinyl arene. In another embodiment, the block copolymer can include at least three consecutive tapered mixed blocks. In yet another embodiment, the block copolymer can include at least three consecutive random mixed blocks.
0041According to the present invention, the conjugated diene / monovinyl arene block copolymer has the following formula: i1- (D / A)<sub>m</sub>-i2- (D / A)<sub>n</sub>-i3- (D / A)<sub>p</sub>-i4- (D / A)<sub>q</sub>-i5- (D / A)<sub>r</sub>-X Can include a block structure having. In this equation, A can be a monovinyl arene in the range 0-50 phr (ie, parts by weight per 100 parts weight of monomer) and D can be a conjugated diene in the range 0-50 phr or a mixture of different conjugated diene. (The total of A and D is 100 copies). D / A is a mixture of conjugated diene (s) and monovinyl arene, and the ratio of D / A in each block may be the same or different, typically in the range 0: 50-50: 0 phr. possible. Independently, i1 to i5 can be reaction initiation catalysts in the range 0 to 0.2 phr, the presence of which can initiate new polymer chains. Moreover, independently, m, n, p, q, and r can be integers in the range 0-3 (including 0 and 3). X in the above formula can be a coupling agent or a terminator.
0042Conjugated diene monovinyl arene block copolymers can contain at least one of the following block structures in another embodiment consistent with the present disclosure. (A) iSSiSBX; (B) iSiSBiSBX; (C) iSiS- (B / S) -iSBX; (D) iSiS-(B / S)-(B / S) -X; (E) iSiS-(B / S)-(B / S) -BX; (F) iSiS-(B / S)-(B / S)-(B / S) -X; (G) iSiS-(B / S)-(B / S)-(B / S) -BX; (H) iSiS-(B / S)-(B / S)-(B / S)-(B / S) -X; or (I) iSiS-(B / S)-(B / S)-(B / S)-(B / S) -BX; In formulas (A) to (I), S can be a styrene block, B can be a conjugated diene block, and B / S can be a conjugated diene-monovinyl arene mixed block. Each i can independently be a reaction initiator, the presence of which can initiate a new polymer chain. X in the above formula can be a coupling agent or a terminator.
0043Various monovinyl arenes and conjugated diene can be used to form block copolymers suitable for use in the disclosed cold flow resistant compositions. Monovinyl arenes can often contain 8-18 carbon atoms (eg, this monovinyl arene can be styrene), and conjugated diene is 4 ~. It can contain 12 carbon atoms (eg, this conjugated diene can be butadiene, such as 1,3-butadiene). Thus, in certain embodiments disclosed herein, the conjugated diene-monovinyl arene block copolymer may comprise a styrene-butadiene block copolymer (SBC).
0044Many commercially available styrene-butadiene block copolymers can be used in the cold flow resistant compositions described herein as commercially available styrene-butadiene block copolymers. Is a K-Resin® SBC grade available from Chevron Phillips Chemical Company LP (eg, DK11, KR52, KR53, XK40, KR05, and KK38); SBC grade available from Styrolution (eg, 3G46, 3G55 and 2G66, etc.); SBC grades available from Dexco Polymers (eg, Vector® 8508, Vector® 6507, and Vector® 6241); SBC grades available from Kraton Performance Polymers. (For example, D1155, D1118, D1116, and D1124); LCY Chemical Industry SBC grades available from Corp. (eg LCY3527 and LCY3114); SBC grades available from SINOPEC Corporation (China Petroleum & Chemical Corporation); from Denka (Denki Kagaku Kogyo KK; Denka Chemical Holdings Asia Pacific Pte Ltd.) Available SBC Grades; SBC Grades and the like available from Asahi (Asahi Kasei Chemicals Corporation), as well as mixtures or combinations thereof, but not limited to these.
0045Jien rubber The type and grade of diene rubber that can benefit from the addition of the conjugated diene / monovinyl arene block copolymer is not particularly limited. As a non-limiting example, diene rubber includes polybutadiene, polyisoprene, poly-2-chloro-1,3-butadiene, poly-1-chloro-1,3-butadiene, ethylene / propylene terpolymer, butadiene / aquililonitrile. Copolymers, butyl rubbers, acrylic rubbers, styrene / isobutylene / butadiene copolymers, isoprene / acrylic ester copolymers and the like, and mixtures or combinations thereof can be included. In certain embodiments, the diene rubber can include a polybutadiene rubber, which polybutadiene rubber can be a high cis polybutadiene rubber or a low cis polybutadiene rubber. In one embodiment, the diene rubber may comprise a high cis polybutadiene rubber containing 60-60 mol% cis double bonds, whereas in another embodiment the diene rubber may contain 20-60 mol% cis tern. It may include low cis polybutadiene rubber containing double bonds. Furthermore, in other embodiments, the diene rubber can include a diene monovinyl arene rubber, and the diene rubber can also contain up to 40% by weight styrene. A specific example of a diene monovinyl arene rubber suitable for use described herein is styrene butadiene rubber (SBR).
0046Many commercially available diene rubbers suitable for use as described herein are Ubepol® BR15HB and BR14HB; Diene® available from Firestone Polymers, available from Ube Industrial, Ltd. ) 55AC10 and Diene® 35AC10; Asadene 35AE, Asadene 55AE available from Asahi Kasei Chemicals Corporation, and various rubber grades available from SINOPEC Corporation (China Petroleum & Chemicals Corporation). However, but not limited to these, this includes a mixture or combination of two or more of these materials.
0047Impact polymer composition The high impact polymer composition can be produced from the cold flow resistant compositions disclosed herein. One such high impact polymer composition can include (i) a monovinyl arene-based polymer and (ii) about 1 to about 35% by weight of particles dispersed in the polymer. Includes any of the cold flow resistant compositions disclosed and described herein. In one embodiment, the high impact polymer composition may comprise particles comprising from about 2-30% by weight, or from about 3 to 30% by weight, a cold flow resistant composition. In another embodiment, the high impact polymer composition may comprise particles containing from about 4 to about 25% by weight cold flow resistant composition. In yet another embodiment, the high impact polymer composition may comprise particles containing from about 5-20% by weight, or from about 8 to about 18% by weight, a cold flow resistant composition. In these and other embodiments, at least a portion of the monovinyl arene-based polymer can be grafted with a cold flow resistant composition. The cold flow resistant composition can be grafted with the monovinyl arene polymer as long as there is at least a part of the monovinyl arene polymer present as a graft on the cold flow resistant composition. For example, the cold flow resistant composition can represent a main chain, and the grafted monovinyl arene-based polymer can represent a side chain composed of a monovinyl arene homopolymer or a copolymer.
0048The monovir arene-based polymer can contain polystyrene in one embodiment, and thus the high impact polymer composition can include high impact polystyrene. In another embodiment, the monovinyl array polymer can be a copolymer derived from a monovinyl array monomer and an acrylic monomer, or the monovinyl array polymer can be a monovinyl array monomer and methacrylate. It can be a copolymer derived from a monomer. In many cases, in these embodiments, the monovinyl arene-based polymer can have a monovinyl arene monomer content of about 55 to about 95% by weight based on the total weight of the polymer. For example, a monovinyl arene-based polymer can have a monovinyl arene monomer content of about 55 to about 80% by weight, or about 65 to about 85% by weight, based on the total weight of the polymer. In some embodiments, the monovinyl arene monomer can be styrene, the acrylic monomer can be acrylic nitrile, and the high impact polymer composition is acrylonitrile butadiene styrene polymer (ABS). obtain. In other embodiments, the monovinyl arene monomer can be styrene, the methacrylate monomer can be methyl methacrylate, and the high impact polymer composition can be a methyl methacrylate butadiene styrene polymer (MBS). ..
0049Example The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention in any way. After reading the description herein, various other embodiments, embodiments, modifications, and equivalents thereof are naturally implied to those skilled in the art without departing from the spirit of the invention or the scope of the appended claims. It is possible to do.
0050Solution viscosity (cP or Pa-s) was measured at 30 ° C. using a Brookfield viscometer R / s-CPS + rheometer with a solid content of 14% in toluene, unless otherwise stated.
0051Mooney viscosity measurements (ML / 4/100 ° C) were determined according to ASTM 1646-95.
0052Cold flow measurement (%) was performed as follows. The test material (base rubber, mixture of rubber and SBC, etc.) was dissolved in THF, mixed well and dried in vacuo to remove the solvent. The test material was then molded into a cylindrical specimen with a diameter of 3/4 "(1.9 cm) and a height of 1/2" (1.27 cm) at 350 ° F (177 ° C). Specimens and a 350 g cylinder with a diameter of 3 inches (7.6 cm) were pre-adjusted at 150 ° F (65 ° C) for 1 hour. The specimen is then compressed at 150 ° F (65 ° C) for 1 hour by a weight of 350 g, as described in US Pat. No. 3,758,656, the disclosure of which is incorporated herein by reference in its entirety. did. The height of the test piece before and after the test, h<sub>0</sub>And h<sub>f</sub>Expressed as, along with the cold flow (measured in%) equation: 100 × (h)<sub>0</sub>-h<sub>f</sub>) / H<sub>0</sub>Was decided by. The cold flow percentages listed in the examples below show the average of the two measurements.
0053The styrene percent (%) in the following examples is the styrene monomer content in the block copolymer. In the case of general purpose polystyrene, the styrene monomer content is described as 100%.
0054Styrene-butadiene block copolymer grades were obtained from Chevron Phillips Chemical Company LP, Styrolution, Dexco Polymers, Kraton Performance Polymers, and LCY Chemicals. SBC grades are given a numerical designation, which has the following corresponding styrene content: SBC1 (76% styrene) SBC2 (74% styrene) SBC3 (75% styrene) SBC4 (70% styrene) SBC5 (29% styrene) SBC6 (43% styrene) SBC7 (51% styrene) SBC8 (65% styrene) SBC9 (62% styrene) SBC10 (43% styrene) SBC11 (40% styrene) SBC12 (40% styrene) SBC13 (33% Styrene) SBC14 (29% Styrene) SBC15 (25% styrene) SBC16 (23% styrene) SBC17 (30% styrene SIS copolymer)
0055Examples 1 to 5 Table 1 summarizes the viscosity and cold flow properties of various commercial grade rubbers available from Ube Industrial, Ltd., Firestone Polymers, Asahi Kasei Chemicals Corporation, and SINOPEC Corporation. The cold flow of these rubbers was at least 35%, up to over 65%.<tables num="1"><img id="000002" he="76" wi="149" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0056Examples 6-14 Table 2 summarizes the viscosities and cold flows for pure BR4 as well as for mixtures with 25 wt% styrene block copolymers with varying styrene monomer content. Further included in Table 2 are viscosities for pure BR5 as well as for mixtures with 25 wt% styrene block copolymers with varying styrene monomer content. Unexpectedly, the addition of 25% of styrene block copolymer, a cold flow over also significantly reduced, the viscosity was also significantly reduced. Interestingly, the addition of 25% styrene block copolymer with a styrene content of 70-80% completely eliminated the cold flow measured by the cold flow test described above (ie, 0% cold flow). ..<tables num="2"><img id="000003" he="129" wi="151" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0057Examples 15-22 Table 3 summarizes the effects of addition of various weight percent SBC4 (70% styrene monomer content) on the solution viscosities of BR5, BR4, and BR1 as well as the cold flow of BR4. The surprising results of the simultaneous decrease in viscosity and cold flow with an increase in the percentage of SBC4 are clear from Table 3. Example 20 demonstrates that a mixture of 25% SBC4 and BR4 was sufficient to completely eliminate cold flow.<tables num="3"><img id="000004" he="79" wi="151" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0058Examples 23 to 30 Table 4 summarizes the effects of addition of various weight percent SBC5 (29% styrene monomer content) on the solution viscosity of BR5 and the cold flow of BR4. Similar to Examples 15-22, Examples 23-30 demonstrate the surprising result of a simultaneous decrease in viscosity and cold flow with an increase in the percentage of SBC5. As the styrene monomer content decreased, an amount of SBC5 greater than 30% was required to significantly reduce the cold flow of BR4.<tables num="4"><img id="000005" he="83" wi="102" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0059Examples 31-33 Table 5 summarizes the effect of addition of various weight percent general-purpose polystyrene (100% styrene monomer content, grade EA3400, available from Americas Styrenics) on the cold flow of BR4. Interestingly, polystyrene has not been effective in reducing cold flow. For example, for Example 33 with 20% polystyrene charge, the cold flow was 39%, while for Example 26 (20% SBC with 29% styrene monomer), the cold flow was 29%. For Example 19 (20% SBC4 with 70% styrene monomer), it was 14%.<tables num="5"><img id="000006" he="51" wi="93" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0060Examples 34 to 49 Table 6 summarizes the effect of the styrene monomer content of the styrene block copolymer on the cold flow of BR4 by charging 20% by weight of the styrene block copolymer. In general, SBC grades with a styrene monomer content of greater than 50% resulted in a significantly greater reduction in cold flow than those with a styrene monomer content of less than 50%.<tables num="6"><img id="000007" he="119" wi="100" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0061Examples 50-57 Table 7 summarizes the effect of the styrene monomer content of the styrene block copolymer on the cold flow of BR4 by charging 5% by weight and 10% by weight of the styrene block copolymer. For pure BR4 with 47% cold flow, only SBC with 76% styrene monomer of Example 51 resulted in a significant reduction in cold flow at 5% by weight charge. At 10% by weight general-purpose polystyrene (Example 50) did not provide an advantage, while SBC (Examples 51-54) with 65-76% styrene monomer was at least 10% in cold flow. It brought about a decrease in points.<tables num="7"><img id="000008" he="75" wi="127" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>Examples 58 ~ 63
0062Examples 58 ~ 63 Table 8 summarizes the effect of the styrene monomer content of the styrene block copolymer on the cold flow of BR2 by charging 20% by weight of the styrene block copolymer. Pure BR2 rubber had the highest cold flow (67%) of any of the rubber grades tested. Nevertheless, the addition of 20% by weight SBC dramatically reduced cold flow, regardless of the content of styrene monomer. The most effective in reducing cold flow is SBC with 70% or more styrene monomer (Examples 58-60), in particular SBC1 almost completely eliminated the cold flow of BR2 (ie, that is). Cold flow was 1%).<tables num="8"><img id="000009" he="63" wi="100" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0063Examples 64 to 74 Table 9 summarizes the effects of the addition of various weight percent styrene block copolymers on the cold flow of BR4 and the effects of the content of styrene monomers on the cold flow of BR4. In general, the addition of styrene block copolymers to butadiene rubber results in better cold flow performance, with higher weight percent of the styrene block copolymer (eg, 15% by weight or more) resulting in better cold flow performance. To improve. SBC grades (ie, non-polystyrene of Example 64) with a content of styrene monomer greater than 50% but less than 100% were more effective in improving cold flow.<tables num="9"><img id="000010" he="100" wi="128" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
0064Examples 75-90 Table 10 summarizes the dimensional stability factors for pure BR1, BR2, and BR4, and for BR2 or BR4 mixtures containing styrene-butadiene block copolymers with various styrene monomer content. .. The dimensional stability factor (DSF, no units) was determined by calculating the final stress in an extended 16-hour cold flow test and dividing this final stress by the stress of a standard single veil of rubber. The standard single veil of rubber used in the DSF determination is 0.913 g / cm<sup>3</sup>It was a rubber veil with a density of 70 cm in length × 35 cm in width × 21 cm in height. Using this bale volume and rubber density, it was calculated that the bale mass was about 47 kg and the resulting weight was 460 N. The stress of a standard single bale of rubber was determined by dividing this gravity by the surface area of the bale (0.7m x 0.35m). Therefore, the standard single bale stress for rubber was 1878 Pa (0.272 psi), and this value was used in all DSF calculations provided herein.
0065The final stress in the extended 16-hour cold flow test was determined as follows. The test material (base rubber, mixture of rubber and SBC, etc.) was dissolved in THF, mixed well and dried to remove the solvent. The test material was then molded into a cylindrical specimen with a diameter of 3/4 "(1.9 cm) and a height of 1/2" (1.27 cm) at 350 ° F (177 ° C). Specimens and a 350 g cylinder with a diameter of 3 inches (7.6 cm) were pre-adjusted at 150 ° F (65 ° C) for 1 hour. Specimens were then compressed at 150 ° F (65 ° C) for 16 hours by a weight of 350 g, as described in US Pat. No. 3,758,656. The height of the specimen after the 16-hour test was measured and recorded.
0066For illustration purposes, for Example 75, the determination of final stress in an extended 16-hour cold flow test is described as having a final specimen height of 0.312 inches (0.8 cm). The initial volume of the cylindrical specimen is 3.62 cm<sup>3</sup>(0.22in<sup>3</sup>)Met. Since these calculations ignore the elastic compressibility of the rubber sample, the final volume of the cylindrical sample after 16 hours is the same as the initial volume and is therefore performed at the end of the 16 hour test. Example 75 has a surface area of 4.5 cm<sup>3</sup>Met. A weight of 350 g exerted a force of 3.43 N and after dividing by the final surface area of Example 75, the final stress in the extended 16 hour cold flow test was about 7600 Pa (1.1 psi). The DSF for Example 75 was determined by a ratio of 7600Pa / 1878Pa, which is equal to 4.0. Each DSF for Examples 76-90 was determined in a similar manner, using the final specimen height after the extended 16-hour test as a measurable variable.
0067Interestingly, as shown in Table 10, the addition of 20% styrene block copolymer with a styrene content of 70% or higher has a dimensional stability factor of at least 4.0 (for compositions containing BR2 and BR4). DSF value) was brought about. Without the addition of SBC, the DSF values for pure BR2 and BR4 were 1.6 and 1.9 (ie, less than 2), respectively.<tables num="10"><img id="000011" he="118" wi="134" file="JP6049865B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>
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Numbers
- Publication
- 6049865
- Application
- 2015511439
Titles2
- Japanese
- ゴム及びブロック共重合体を含有する耐コールドフロー性組成物
- English
- Cold flow resistant composition containing rubber and block copolymer
Classification
- CPC, 9
- C08L9/00
- C08L53/02
- C08L53/025
- C08J3/00
- C08L23/025
- C08L25/06
- C08L25/12
- Y10S152/905
- C08L2205/03
- IPC, 3
- C08L9 06
- C08L9 00
- C08L53 02
