Novel light stabilisers based on sterically hindered amines
12 claims: 12 independent, 0 dependent
- 1Neue UV-Stabilisatoren, dadurch gekennzeichnet, daß ihre Migrationsgeschwindigkeit in oder ihre Extrahierbarkeit aus organischen Materialien durch die Einwirkung von UV-Licht deutlich verringert wird. New UV stabilizers, characterized in that their migration rate in or their extractability from organic materials is significantly reduced by the action of UV light.
- 2Neue Stabilisatoren gemäß Anspruch 1 der allgemeinen Formel (I), wobei die im aromatischen Ring zur Carbonylgruppe α-ständigen Substituenten nicht OH bedeuten dürfen, m und n unabhängig voneinander 0,1 oder 2 bedeuten,V oder W unabhängig voneinander H, Hal, NO2, OH, OR1, CN, SR1, C1-C18-Alkyl, C3-C10-Cycloalkyl, unsubstituiertes oder mit OH, OR1, Hal oder NR1R2 substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, einen heteroaromatischen Rest mit 5-15 C-Atomen, NR1R2 oder COOR1 bedeuten,R1 und R2 H, C1-C18-Alkyl, C3-C10-Cycloalkyl, unsubstituiertes oder mit OH, OR1 oder Hal substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, oder einen heteroaromatischen Rest mit 5-15 C-Atomen bedeuten,X einen zweibindigen Rest -O-, -S- oder -C(O)- bedeutet,Y für X = O oder S -CH2-C(O)-, -C(O)-, -C(O)-C(O)-, -CH2-CHR1-, -(CH2- CH2O)n- (mit n = 1 - 8) oder bedeutet, wobei R3 NR1R2, OR1, Halogen oder Z bedeutet,Y für X = -C(O)- eine direkte Bindung zu Z bedeutet,Z einen der folgenden Reste bedeutet, worinR4 Wasserstoff, C1-C20-Alkyl, ein Oxyl-Radikal, OH, NO, CH2CN, unsubstituiertes oder mit OH, OR1, Hal oder NR1R2 substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, Allyl, C1-C30-Alkyloxy, C5-C12-Cycloalkyloxy, C3-C10-Alkenyl, C3-C6-Alkinyl, C1-C10-Acyl, Halogen, undR5 Wasserstoff oder C1-C4-Alkyl bedeutet. Novel stabilizers according to claim 1 of general formula (I), in which which in the aromatic ring to the carbonyl group α-substituents may not be OH,m and n independently of one another denote 0.1 or 2,V or W are independently H, Hal, NO2, OH, OR1, CN, SR1, C1-C18Alkyl, C3-C10-Cycloalkyl, unsubstituted or with OH, OR1, Hal or NR1R2 substituted C6-C14-Aryl or C7-C10-Arylalkyl, a heteroaromatic radical having 5-15 C atoms, NR1R2 or COOR1 mean,R1 and R2 H, C1-C18Alkyl, C3-C10-Cycloalkyl, unsubstituted or with OH, OR1 or Hal substituted C6-C14-Aryl or C7-C10Arylalkyl, or a heteroaromatic radical having 5-15 C atoms,X denotes a divalent radical -O-, -S- or -C (O) -,Y for X = O or S-CH2-C (O) -, -C (O) -, -C (O) -C (O) -, -CH2CHR1-, - (CH2- CH2O)n- (with n = 1 - 8) or means where R3 NO1R2, OR1, Halogen or Z,Y for X = -C (O) - a direct bond to Z,Z is one of the following radicals means whereinR4 Hydrogen, C1-C20Alkyl, an oxyl radical, OH, NO, CH2CN, unsubstituted or with OH, OR1, Hal or NR1R2 substituted C6-C14-Aryl or C7-C10-Arylalkyl, allyl, C1-C30-Alkyloxy, C5-C12-Cycloalkyloxy, C3-C10Alkenyl, C3-C6Alkynyl, C1-C10-Acyl, halogen, andR5 Hydrogen or C1-C4-Alkyl.
- 3Stabilisatoren gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die im aromatischen Ring zur Carbonylgruppe α-ständigen Substituenten nicht OH bedeuten dürfen, m und n unabhängig voneinander 0, 1 oder 2 bedeuten,V oder W unabhängig voneinander H, NO2, OH, C1-C10-Alkyl, C5-C6-Cycloalkyl, unsubstituiertes oder mit OH oder NR1R2 substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, einen heteroaromatischen Rest mit 6-10 C-Atomen, NR1R2 oder COOR1 bedeuten,R1 und R2 H, C1-C10-Alkyl, C5-C6-Cycloalkyl, unsubstituiertes oder mit OH substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, oder einen heteroaromatischen Rest mit 6-10 C-Atomen bedeuten,X einen zweibindigen Rest -O- oder -C(O)- bedeutet,Y für X = O -CH2-C(O)-, -C(O)- oder -CH2-CHR1- bedeutet,Z den Rest RA, RC, RD oder RE bedeutet,R4 Wasserstoff, C1-C10-Alkyl, ein Oxyl-Radikal, OH, NO, unsubstituiertes oder mit OH oder NR1R2 substituiertes C6-C14-Aryl oder C7-C10-Arylalkyl, Allyl, C1-C10-Alkyloxy, C6-C9-Cycloalkyloxy, C4-C8-Alkenyl, C3-C6-Alkinyl, C1-C5-Acyl, Halogen, undR5 Wasserstoff oder C1-C4-Alkyl bedeutet. Stabilizers according to claim 1 or 2, characterized in that which in the aromatic ring to the carbonyl group α-substituents may not be OH,m and n independently of one another denote 0, 1 or 2,V or W are independently H, NO2, OH, C1-C10Alkyl, C5-C6Cycloalkyl, unsubstituted or with OH or NR1R2 substituted C6-C14-Aryl or C7-C10-Arylalkyl, a heteroaromatic radical having 6-10 C atoms, NR1R2 or COOR1 mean,R1 and R2 H, C1-C10Alkyl, C5-C6-Cycloalkyl, unsubstituted or substituted with OH C6-C14-Aryl or C7-C10Arylalkyl, or a heteroaromatic radical having 6-10 C atoms,X denotes a divalent radical -O- or -C (O) -,Y for X = O -CH2-C (O) -, -C (O) - or -CH2CHR1- meansZ the rest RA, RC, RD or Re meansR4 Hydrogen, C1-C10Alkyl, an oxyl radical, OH, NO, unsubstituted or with OH or NR1R2 substituted C6-C14-Aryl or C7-C10-Arylalkyl, allyl, C1-C10-Alkyloxy, C6-C9-Cycloalkyloxy, C4-C8thAlkenyl, C3-C6Alkynyl, C1-C5-Acyl, halogen, andR5 Hydrogen or C1-C4-Alkyl.
- 4Stabilisatoren gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die im aromatischen Ring zur Carbonylgruppe α-ständigen Substituenten nicht OH bedeuten dürfen, m und n unabhängig voneinander 0, 1 oder 2 bedeuten,V oder W unabhängig voneinander H, NO2, C1-C4-Alkyl, NR1R2, oder COOR1 bedeuten,X einen zweibindigen Rest -O- oder -C(O)- bedeutet,Y für X = -O- -C(O)- oder CH2-C(O)- bedeutet,Y für X = -C(O)- eine direkte Bindung zu Z bedeutet undZ einen Rest der Formel RC oder RE bedeutet, worinR4 Wasserstoff, OH, NO, C1-C5-Alkyl, C1-C5-Alkyloxy, C1-C5-Acyl undR5 Methyl bedeutet. Stabilizers according to claim 1 or 2, characterized in that which in the aromatic ring to the carbonyl group α-substituents may not be OH,m and n independently of one another denote 0, 1 or 2,V or W are independently H, NO2, C1-C4Alkyl, NR1R2, or COOR1 mean,X denotes a divalent radical -O- or -C (O) -,Y is X = -O- -C (O) - or CH2-C (O) - meansY for X = -C (O) - a direct bond to Z means andZ is a radical of the formula RC or Re means, in whichR4 Hydrogen, OH, NO, C1-C5Alkyl, C1-C5-Alkyloxy, C1-C5-Acyl andR5 Methyl means.
- 5Process for the preparation of the compounds of the formula (I) according to Claim 2, characterized in that a benzophenone (II) is converted into a reactive molecule (III) with one or more equivalents of a suitable reagent R, in whichV, W, X and Y have the meaning given in formula (I),T represents X = -O- or -S- hydrogen,T for X = -C (O) -OR1, NO1R2, -O- (CO) -R1, OH meansR UYU, thionyl chloride, phosphorus (III) halide, hydrogen halide, elemental chlorine, where U is hydrogen, halogen, OR1 or NO1R2 means, and wherein in a second step, the compound (III) is reacted with ZH to give the compound (I) of the invention, wherein H is hydrogen and Z has the meaning defined in claim 2. Verfahren zur Herstellung der Verbindungen der Formel (I) gemäß Anspruch 2, dadurch gekennzeichnet, daß ein Benzophenon (II) mit einem oder mehreren Äquivalenten eines geeigneten Reagenzes R in ein reaktives Molekül (III) überführt wird, wobei V, W, X und Y die in Formel (I) angegebene Bedeutung aufweisen,T für X = -O- oder -S- Wasserstoff bedeutet,T für X = -C(O)- OR1, NR1R2, -O-(CO)-R1, OH bedeutet, R U-Y-U, Thionylchlorid, Phosphor(III)halogenid, Halogenwasserstoff, elementares Chlor bedeutet, wobei U Wasserstoff, Halogen, OR1 oder NR1R2 bedeutet, und wobei in einem zweiten Schritt die Verbindung (III) mit Z-H zu der erfindungsgemäßen Verbindung (I) umgesetzt wird, wobei H für Wasserstoff steht und Z die in Anspruch 2 definierten Bedeutung besitzt.
- 6Process according to Claim 5, characterized in that the reagent R is 2,4,6-trichloro-s-triazine, phosgene, bromoacetic acid alkyl ester, chloroacetic acid alkyl ester, methyl chloroformate, oxalic acid, oxalic acid dihalide, oxalic acid dialkyl ester, oxalic acid halide monoester, ethylene oxide, thionyl chloride, phosphorus ( III) halide, hydrogen halide or elemental chlorine. Verfahren gemäß Anspruch 5, dadurch gekennzeichnet, daß es sich bei dem Reagenz R um 2,4,6-Trichlor-s-triazin, Phosgen, Bromessigsäurealkylester, Chloressigsäurealkylester, Chlorameisensäuremethylester, Oxalsäure, Oxalsäuredihalogenid, Oxalsäuredialkylester, Oxalsäurehalogenidmonoester, Ethylenoxid, Thionylchlorid, Phosphor(III)halogenid, Halogenwasserstoff oder elementares Chlor handelt.
- 7Process according to Claim 5, characterized in that the reaction is carried out in a protic or aprotic organic solvent, preferably a hydrocarbon, in particular aromatic hydrocarbons, such as toluene, xylene or in mixtures thereof or in tetrahydrofuran. Verfahren gemäß Anspruch 5, dadurch gekennzeichnet, daß die Umsetzung in einem protischen oder aprotischen, organischen Lösemittel, vorzugsweise einem Kohlenwasserstoff, insbesondere aromatischen Kohlenwasserstoffen wie Toluol, Xylol oder in Gemischen hieraus oder in Tetrahydrofuran erfolgt.
- 8Process according to Claim 5, characterized in that one of the reaction components is used in excess as the solvent. Verfahren gemäß Anspruch 5, dadurch gekennzeichnet, daß eine der Reaktionskomponenten im Überschuß als Lösemittel verwendet wird.
- 9Process for the preparation of the compounds of formula (I) according to claim 2, characterized in that first one of the compounds ZH or ZM with M = alkali, with a reagent UYU is converted to the intermediate ZYU and that the compound ZYU in a subsequent reaction with a suitably substituted derivative of the benzophenone of formula (II) with -XT = -OH or -SH to the compounds of formula (I) is reacted. Verfahren zur Herstellung der Verbindungen der Formel (I) gemäß Anspruch 2, dadurch gekennzeichnet, daß zuerst eine der Verbindungen Z-H oder Z-M mit M = Alkali, mit einem Reagenz U-Y-U zu dem Intermediat Z-Y-U umgesetzt wird und daß die Verbindung Z-Y-U in einer anschließenden Reaktion mit einem geeignet substituierten Derivat des Benzophenons der Formel (II) mit -XT = -OH oder -SH zu den Verbindungen der Formel (I) umgesetzt wird.
- 10Process according to Claim 9, characterized in that the anion Z is used for the reaction- is used, which is preferably prepared from the compound ZH, wherein Z has the meaning described in formula (I) and H is hydrogen. Verfahren gemäß Anspruch 9, dadurch gekennzeichnet, daß zur Reaktion das Anion Z- verwendet wird, welches vorzugsweise aus der Verbindung Z-H hergestellt wird, wobei Z die in Formel (I) beschriebene Bedeutung besitzt und H Wasserstoff bedeutet.
- 11Process for stabilizing polymeric material against degradation by light, radiation, heat and oxygen, characterized in that the compound to be stabilized is a compound of formula (I) according to claim 2 in a concentration of 0.001-5% by weight, preferably 0.1-2.0 wt.% Added. Verfahren zum Stabilisieren von polymeren Material gegen den Abbau durch Licht, Strahlung, Wärme und Sauerstoff, dadurch gekennzeichnet, daß man dem zu stabilisierenden Material eine Verbindung der Formel (I) nach Anspruch 2 in einer Konzentration von 0,001-5 Gew.%, bevorzugt von 0,1-2,0 Gew.% zusetzt.
- 12A method according to claim 11, characterized in that antioxidants, light stabilizers, metal deactivators, antistatic agents, flame retardants, pigments or fillers are used as further additives. Verfahren gemäß Anspruch 11, dadurch gekennzeichnet, daß Antioxidantien, Lichtstabilisatoren, Metalldesaktivatoren, Antistatika, flammhemmende Mittel, Pigmente oder Füllstoffe als weitere Additive eingesetzt werden.
Independent claims12
56 paragraphs, as filed
It is known that organic materials are damaged by high-energy radiation, heat or oxygen. The surface layer of organic materials is usually exposed to these harmful influences in particular. The problem is particularly noticeable in thin articles, such as fibers, tapes and films, but also leads to damage to thick-walled articles (eg embrittlement) especially of the surface layer.
There are already many pamphlets describing compounds for the stabilization of organic material. Part of this relates to compounds based on 2,2,6,6-tetraalkylpiperidine. These stabilizers must be present in sufficient concentration particularly in the surface layer of the organic material to provide effective protection. The low molecular weight representatives of the substance class of the 2,2,6,6-tetraalkylpiperidines have the advantage of migrating rapidly into the surface layer and unfolding there their protective influence. However, they have the serious disadvantage that they have too high volatility and are very easy to extract from the organic material. Although the higher molecular weight representatives of this substance class are not so easy to extract, they migrate much more slowly. In the art, this problem is addressed by using a mixture of low molecular weight (fast migrating) and high molecular weight (slow migrating) stabilizers.
DE-A-4 327 297 discloses compounds which are derived from 2,2,6,6-tetraalkylpiperidines and which are converted into an extraction-stable form after exposure to ultraviolet light. The migration rate lowering component in DE-A-4 327 297 is a derivative of cinnamic acid. It is held responsible for the stabilizer forming a covalent bond to the organic material. EP-A-389 427 describes compounds which simultaneously contain a derivative of 2,2,6,6-tetraalkylpiperidine and a benzophenone in the same molecule. There, however, only those benzophenones are disclosed which have α-hydroxyl groups and thus act as UV light absorbers.
Surprisingly, it has been found that suitably substituted representatives of benzophenone (a) migrate "rapidly" in organic materials and thus migrate rapidly into the surface layer of the material. (B) after exposure to light of wavelength 280-700 nm (preferably under the action of Light of wavelength of 300 - 400 nm) in a less good or no longer extractable form, and (c) in this new, non-extractable form, organic materials continue to be effectively protected from the aforementioned harmful effects of ultraviolet light.
The invention thus UV stabilizers of the general formula (I),<chemistry id="chem0001" num="0001"><img file="EP0822221A2_D0001.tif" /></chemistry> wherein which in the aromatic ring to the carbonyl group α-substituents may not be OH,<dl id="dl0001" compact="compact"><dt>m and n</dt><dd>independently of one another denote 0, 1 or 2,</dd><dt>V or W</dt><dd>independently of one another H, Hal, NO<sub>2</sub>, OH, OR<sup>1</sup>, CN, SR<sup>1</sup>, C<sub>1</sub>-C<sub>18</sub>-, preferably C<sub>1</sub>-C<sub>10</sub>-, in particular C<sub>1</sub>-C<sub>4</sub>Alkyl, C<sub>3</sub>-C<sub>10</sub>-, preferably C<sub>5</sub>-C<sub>6</sub>-Cycloalkyl, unsubstituted or with OH, OR<sup>1</sup>, Hal or NR<sup>1</sup>R<sup>2</sup> substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>-Arylalkyl, a heteroaromatic radical having 5-15, preferably 6-10 C atoms, NR<sup>1</sup>R<sup>2</sup> or COOR<sup>1</sup> mean,</dd><dt>R<sup>1</sup> and R<sup>2</sup></dt><dd>H, C<sub>1</sub>-C<sub>18</sub>-, preferably C<sub>1</sub>-C<sub>10</sub>-, in particular C<sub>1</sub>-C<sub>4</sub>Alkyl, C<sub>3</sub>-C<sub>10</sub>-, preferably C<sub>5</sub>-C<sub>6</sub>-Cycloalkyl, unsubstituted or with OH, OR<sup>1</sup> or Hal substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>Arylalkyl, or a heteroaromatic radical having 5-15, preferably 6-10 C atoms,</dd><dt>X</dt><dd>a divalent radical is -O-, -S-, or -C (O) -,</dd><dt>Y</dt><dd>for X = O or S-CH<sub>2</sub>-C (O) -, -C (O) -, -C (O) -C (O) -, -CH<sub>2</sub>CHR<sup>1</sup>-, - (CH<sub>2</sub>- CH<sub>2</sub>-O)<sub>n</sub>- (with n = 1-8), preferably -C (O) - or -CH<sub>2</sub>-C (O) -, or a residue<chemistry id="chem0002" num="0002"><img file="EP0822221A2_D0002.tif" /></chemistry> means, wherein R<sup>3</sup> NO<sup>1</sup>R<sup>2</sup>, OR<sup>1</sup>, Halogen or Z,</dd><dt>Y</dt><dd>for X = -C (O) - a direct bond to Z means</dd><dt>Z</dt><dd>one of the following radicals means</dd></dl><chemistry id="chem0003" num="0003"><img file="EP0822221A2_D0003.tif" /></chemistry> preferably R<sub>C</sub> or R<sub>e</sub>. wherein<dl id="dl0002" compact="compact"><dt>R<sup>4</sup></dt><dd>Hydrogen, C<sub>1</sub>-C<sub>20</sub>-, preferably C<sub>1</sub>-C<sub>10</sub>-, in particular C<sub>1</sub>-C<sub>5</sub>Alkyl, an oxyl radical, OH, NO, CH<sub>2</sub>CN, unsubstituted or with OH, OR<sup>1</sup>, Hal or NR<sup>1</sup>R<sup>2</sup> substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>-Arylalkyl, allyl, C<sub>1</sub>-C<sub>30</sub>-, preferably C<sub>1</sub>-C<sub>10</sub>-, in particular C<sub>1</sub>-C<sub>5</sub>-Alkyloxy, C<sub>5</sub>-C<sub>12</sub>-, preferably C<sub>6</sub>-C<sub>9</sub>-Cycloalkyloxy, C<sub>3</sub>-C<sub>10</sub>-, preferably C<sub>4</sub>-C<sub>8th</sub>Alkenyl, C<sub>3</sub>-C<sub>6</sub>Alkynyl, C<sub>1</sub>-C<sub>10</sub>-, preferably C<sub>1</sub>-C<sub>5</sub>Acyl, halogen,</dd><dt>R<sup>5</sup></dt><dd>Hydrogen or C<sub>1</sub>-C<sub>4</sub>-Alkyl, preferably methyl.</dd></dl>
Also very suitable are stabilizers in which which in the aromatic ring to the carbonyl group α-substituents may not be OH,<dl id="dl0003" compact="compact"><dt>m and n</dt><dd>independently of one another denote 0, 1 or 2,</dd><dt>V or W</dt><dd>independently of one another H, NO<sub>2</sub>, OH, C<sub>1</sub>-C<sub>10</sub>Alkyl, C<sub>5</sub>-C<sub>6</sub>Cycloalkyl, unsubstituted or with OH or NR<sup>1</sup>R<sup>2</sup> substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>-Arylalkyl, a heteroaromatic radical having 6-10 C atoms, NR<sup>1</sup>R<sup>2</sup> or COOR<sup>1</sup> mean,</dd><dt>R<sup>1</sup> and R<sup>2</sup></dt><dd>H, C<sub>1</sub>-C<sub>10</sub>Alkyl, C<sub>5</sub>-C<sub>6</sub>-Cycloalkyl, unsubstituted or substituted with OH C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>Arylalkyl, or a heteroaromatic radical having 6-10 C atoms,</dd><dt>X</dt><dd>a divalent radical is -O- or -C (O) -,</dd><dt>Y</dt><dd>for X = O -CH<sub>2</sub>-C (O) -, -C (O) - or -CH<sub>2</sub>CHR<sup>1</sup>- means</dd><dt>Z</dt><dd>the rest of R<sub>A</sub>, R<sub>C</sub>, R<sub>D</sub> or R<sub>e</sub> means, in which</dd><dt>R<sup>4</sup></dt><dd>Hydrogen, C<sub>1</sub>-C<sub>10</sub>Alkyl, an oxyl radical, OH, NO, unsubstituted or with OH or NR<sup>1</sup>R<sup>2</sup> substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>-Arylalkyl, allyl, C<sub>1</sub>-C<sub>10</sub>-Alkyloxy, C<sub>6</sub>-C<sub>9</sub>-Cycloalkyloxy, C<sub>4</sub>-C<sub>8th</sub>Alkenyl, C<sub>3</sub>-C<sub>6</sub>Alkynyl, C<sub>1</sub>-C<sub>5</sub>-Acyl, halogen, and</dd><dt>R<sup>5</sup></dt><dd>Hydrogen or C<sub>1</sub>-C<sub>4</sub>-Alkyl.</dd></dl>
Particularly suitable UV stabilizers are compounds of the formula I in which the substituents which are α-substituents in the aromatic ring to the carbonyl group may not be OH,<dl id="dl0004" compact="compact"><dt>m and n</dt><dd>independently of one another denote 0, 1 or 2,</dd><dt>V or W</dt><dd>independently of one another H, NO<sub>2</sub>, C<sub>1</sub>-C<sub>4</sub>Alkyl, NR<sup>1</sup>R<sup>2</sup> or COOR<sup>1</sup> mean,</dd><dt>R<sup>1</sup> and R<sup>2</sup></dt><dd>H, C<sub>1</sub>-C<sub>4</sub>Alkyl, unsubstituted or OH substituted C<sub>6</sub>-C<sub>14</sub>-Aryl or C<sub>7</sub>-C<sub>10</sub>Arylalkyl,</dd><dt>X</dt><dd>a divalent radical is -O- or -C (O) -,</dd><dt>Y</dt><dd>for X = -O- -C (O) - or CH<sub>2</sub>-C (O) - means</dd><dt>Y</dt><dd>for X = -C (O) - a direct bond to Z means</dd><dt>Z</dt><dd>a radical of the formula R<sub>C</sub> or R<sub>e</sub> means, in which</dd><dt>R<sup>4</sup></dt><dd>Hydrogen, OH, NO, C<sub>1</sub>-C<sub>5</sub>Alkyl, C<sub>1</sub>-C<sub>5</sub>Alkyloxy, C<sub>1</sub>-C<sub>5</sub>-Acyl and</dd><dt>R<sup>5</sup></dt><dd>Methyl means.</dd></dl>
The invention also relates to the preparation of these compounds (I). The compounds according to the invention can basically be synthesized in two different ways.
On the one hand, the compound according to the invention can be prepared in such a way that a benzophenone (II) is converted with one or more equivalents of a suitable reagent R into a reactive molecule (III):<chemistry id="chem0004" num="0004"><img file="EP0822221A2_D0004.tif" /></chemistry>
Meaning of T:<ul id="ul0001" list-style="none" compact="compact"><li>In the event that X = -O-, -S- means, then: T = hydrogen.</li><li>In the case that X = -C (O) -, then: T = OR<sup>1</sup>, NO<sup>1</sup>R<sup>2</sup>, -OC (O) -R<sup>1</sup>, OH.</li></ul>
Meaning of R:<ul id="ul0002" list-style="none" compact="compact"><li>In the event that XT = OH or SH means:<dl id="dl0005" compact="compact"><dt>R means</dt><dd>Hal-CH<sub>2</sub>-C (O) -U, UC (O) -U, UC (O) -C- (O) -U, ethylene oxide Hal-CH<sub>2</sub>CHR<sup>1</sup>-Hal<chemistry id="chem0005" num="0005"><img file="EP0822221A2_D0005.tif" /></chemistry></dd></dl></li></ul> where R<sup>3</sup> = NR<sup>1</sup>R<sup>2</sup>, OR<sup>1</sup>, Halogen or Z means. Meaning of U: U = halogen, OR<sup>1</sup>, NO<sup>1</sup>R<sup>2</sup>, The remaining substituents are as defined in formula I.
Examples of the compound (III) are:
<chemistry id="chem0006" num="0006"><img file="EP0822221A2_D0006.tif" /></chemistry>
The reagent R is, for. B. 2,4,6-trichloro-s-triazine (= cyanuric chloride), phosgene, alkyl bromoacetate, chloroacetate, methyl chloroformate, oxalic acid, oxalic acid, Oxalsäuredialkylester, Oxalsäurehalogenidmonoester, ethylene oxide, thionyl chloride (SOCl<sub>2</sub>), Phosphorus (III) halide (PCl<sub>3</sub> or PBr<sub>3</sub>), Hydrogen halide (HCl, HBr), elemental chlorine.
In a second step, the compound (III) is reacted with ZH to give the compound (I) according to the invention. The reaction can also be the anion Z<sup>-</sup> which is preferably prepared from the compound ZH (with Z = meaning in formula I and H = hydrogen). If it is in compound (II) at -XT is -C (O) OR<sup>1</sup>, -C (O) NR<sup>1</sup>R<sup>2</sup>, -C (O) -OC (O) -R<sup>1</sup> is already the compound (II) with ZH or with the anion Z<sup>-</sup> be converted to the target compound (I).
Alternatively, the way can be followed, first a literature known derivative of 2,2,6,6-tetraalkylpiperidine, such as. B. one of the compounds ZH or ZM with (M = z. B. Na, K ...) to react with a reagent (UYU) to the intermediate ZYU. Z and H have the meaning given above. In this preparation variant, compound ZYU is converted into the compounds (I) according to the invention in a subsequent reaction with a suitably substituted derivative of benzophenone (= compounds of the formula II where -XT = -OH or -SH).
The reactions are carried out in a protic or aprotic, organic solvent, preferably a hydrocarbon, in particular aromatic hydrocarbons such as toluene, xylene or in mixtures thereof or in tetrahydrofuran. Another possibility is to use one of the reaction components in excess as a solvent.
The compounds according to the invention are outstandingly suitable for stabilizing organic material against the action of light, radiation, oxygen and heat. They are added to the organic material to be stabilized in a concentration of 0.001 to 5 wt .-%, preferably 0.02 to 1.0 wt .-%, based on the organic material, before, during or after its preparation.
Under organic material, for example, precursors for plastics, paints, paints and oils, but especially plastics, paints, paints and oils themselves to understand.
The present invention furthermore relates to organic materials stabilized against the action of light, radiation, oxygen and heat, in particular plastics, paints, paints and oils, which contain the compounds according to the invention in the concentrations indicated above. Such organic materials include, for example, fabrics as described on pages 13-18 of European Patent Application 95107978.1-1270, which is incorporated herein by reference.
The organic material stabilized by the compounds according to the invention may optionally contain further additives, for example antioxidants, light stabilizers, metal deactivators, antistatic agents, flame retardants, pigments and fillers. Antioxidants and light stabilizers which are added in addition to the compounds according to the invention are, for example, compounds based on sterically hindered amines or sterically hindered phenols or costabilizers containing sulfur or phosphorus. Suitable additional additives include, for example, compounds as described on pages 18-29 of the European Patent Application 95 109 778.1-1270, which is incorporated herein by reference. Other suitable additives include: 2,2 ', 2 "-nitrilo [triethyltris (3,3', 5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2 '-diyl) phosphite], bis [2-methyl-4,6-bis (1,1-dimethylethyl) phenol] ethyl acetate, secondary hydroxylamines such as. B. Distearylhydroxylamine or dilaurylstearylamine, zeolites such. B. DHT 4A, Oxides and hydroxides of aluminum, Zinc, Alkali and alkaline earth metals, Al, Ca, Mg, Zn stearate, wherein for individual applications particularly fine-grained material is particularly suitable, Condensation product of N, N'-bis [(4,6-di (4-n-butylamino-2,2,6,6-tetramethylpiperid-4-yl) 1,3,5-triazin-2-yl] -3 aminopropyl-ethylene-1,2-diamine and 2,4-dichloro-6- (4-n-butylamino-2,2,6,6-tetramethylpiperid-4-yl) 1,3,5-triazine, 1,3, -2,4-di (benziliden) -D-sorbitol, 1,3-2,4-di (4-tolyliden) -D-sorbitol, 1,3-2,4-di (4-ethylbenziliden) -D-sorbitol.
Mixture component may also be hydrotalcites, which may be described by the general formula [(M<sup>2+</sup>)<sub>1-x</sub> (M<sup>3+</sup>)<sub>x</sub> (OH)<sub>2</sub> (A<sup>n-</sup>)<sub>x / n</sub> yH<sub>2</sub>O], in which<dl id="dl0006" compact="compact"><dt>(M<sup>2+</sup>)</dt><dd>Mg, Ca, Sr, Ba, Zn, Pb, Sn, Ni,</dd><dt>(M<sup>3+</sup>)</dt><dd>Al, B, Bi,</dd><dt>A<sup>n</sup></dt><dd>an anion of valency n,</dd><dt>n</dt><dd>an integer from 1 to 4,</dd><dt>x</dt><dd>a value between 0 and 0.5,</dd><dt>y</dt><dd>a value between 0 and 2, and</dd><dt>A</dt><dd>OH<sup>-</sup>, Cl<sup>-</sup>, Br<sup>-</sup>, I<sup>-</sup>, ClO<sub>4</sub><sup>-</sup>, CH<sub>3</sub>COO<sup>-</sup>, C<sub>6</sub>H<sub>5</sub>COO<sup>-</sup>, CO<sub>3</sub><sup>2</sup>, SO<sub>4</sub><sup>2</sup>, (OOC-COO)<sup>2</sup>, (CHOHCOO)<sub>2</sub><sup>2</sup>, (CHOH)<sub>4</sub>CH<sub>2</sub>OHCOO<sup>-</sup>, C<sub>2</sub>H<sub>4</sub>(COO)<sub>2</sub><sup>2</sup>, (CH<sub>2</sub>COO)<sub>2</sub><sup>2</sup>, CH<sub>3</sub>CHOHCOO<sup>-</sup>, SiO<sub>3</sub><sup>2</sup>, SiO<sub>4</sub><sup>4</sup>-, Fe (CN)<sub>6</sub><sup>3</sup>, Fe (CN)<sub>6</sub><sup>4</sup>, BO<sub>3</sub><sup>3</sup>, PO<sub>3</sub><sup>3</sup>, HPO<sub>4</sub><sup>2</sup>means.</dd></dl>
Hydrotalcites in which (M<sup>2+</sup>) for about<sup>2+</sup>), (Mg<sup>2+</sup>) or a mixture of (Mg<sup>2+</sup>) and (Zn<sup>2+</sup>); (A<sup>n-</sup>) for CO<sub>3</sub><sup>2</sup>, BO<sub>3</sub><sup>3</sup>, PO<sub>3</sub><sup>3</sup> stand. Furthermore, also hydrotalcites, which are represented by the formula [(M<sup>2+</sup>)<sub>x</sub> (Al<sup>3+</sup>)<sub>2</sub> (OH)<sub>2x + 6nz</sub> (A<sup>n-</sup>)<sub>2</sub> yH<sub>2</sub>O] can be described, are used. Here stands (M<sup>2+</sup>) for Mg<sup>2+</sup> or Zn<sup>2+</sup>, but preferably Mg<sup>2+</sup>, (A<sup>n-</sup>) represents an anion, especially from the group CO<sub>3</sub><sup>2</sup>, (OOC-COO)<sup>2</sup>, OH<sup>-</sup> and S<sup>2</sup>where n describes the valence of the ion.<ul id="ul0003" list-style="none" compact="compact"><li>y is a positive number, preferably between 0 and 5, in particular between 0.5 and 5;</li><li>x and z have positive values that are preferably between 2 and 6 at x and z should be less than 2. Particular preference is given to the hydrotalcites of the following formulas: al<sub>2</sub>O<sub>3</sub> · 6MgO · CO<sub>2</sub> · 12H<sub>2</sub>O, Mg<sub>4.5</sub>al<sub>2</sub>(OH)<sub>13</sub> · CO<sub>3</sub> · 3.5H<sub>2</sub>O, 4MgO · Al<sub>2</sub>O<sub>3</sub> · CO<sub>2</sub> · 9H<sub>2</sub>O, 4MgO · Al<sub>2</sub>O<sub>3</sub> · CO<sub>2</sub> · 6H<sub>2</sub>O, ZnO.3MgO.Al<sub>2</sub>O<sub>3</sub> · CO<sub>2</sub> · 8-9H<sub>2</sub>O, ZnO.3MgO.Al<sub>2</sub>O<sub>3</sub> · CO<sub>2</sub> · 5-6H<sub>2</sub>O, Mg<sub>4.5</sub>al<sub>2</sub>(OH)<sub>13</sub> · CO<sub>3</sub> ,</li></ul>
Hydrotalcites are preferably used in the polymer in a concentration of from 0.01 to 5% by weight, in particular from 0.2 to 3% by weight, based on the total polymer preparation.
The additives are incorporated into the organic polymers by generally customary methods. The incorporation can be carried out, for example, by mixing or applying the compounds and optionally other additives in or on the polymer immediately after the polymerization or in the melt before or during shaping. Also, by applying the dissolved or dispersed compounds to the polymer directly or mixing in a solution, suspension or emulsion of the polymer, optionally with subsequent evaporation of the solvent, the incorporation can be carried out. The compounds are also effective when incorporated into an already granulated polymer subsequently in a separate processing step. The compounds of the formula (I) according to the invention can also be added to the polymers to be stabilized in the form of a masterbatch containing these compounds, for example in a concentration of from 1 to 75, preferably 2.5 to 30,% by weight.
Examples
The following examples are intended to explain the invention in more detail. All connections could be determined by their<sup>1</sup>H or <sup>13</sup>C NMR spectra are uniquely identified. The origin of the starting materials is shown in the corresponding tables.
Examples 1.6:
<chemistry id="chem0007" num="0007"><img file="EP0822221A2_D0007.tif" /></chemistry>
General procedure for the preparation of compounds 1 - 6:
The reaction is carried out under nitrogen and with the exclusion of air and water. An amount of 25-100 mmol of the compound A, B or C (Table 1) and a 10% excess of triethylamine are introduced into 150 ml of toluene. A, based on A, B or C, equimolar amount of an acid chloride D or E is dissolved in 30 ml of toluene and slowly added to the initial solution at 22 ° C. After stirring at 109 ° C. for 3 h, a light precipitate is precipitated. The reaction mixture is poured onto water, the precipitate dissolves. The organic phase is washed with water, dried with sodium sulfate and filtered off from this. The volatiles are removed in vacuo, the residue is dried at 80 ° C in a vacuum. <tables id="tabl0001" num="0001"><table frame="all"><title>Table 1</title><tgroup cols="7" colsep="1" rowsep="1"><colspec colnum="1" colname="col1" colwidth="22.50mm" /><colspec colnum="2" colname="col2" colwidth="22.50mm" /><colspec colnum="3" colname="col3" colwidth="22.50mm" /><colspec colnum="4" colname="col4" colwidth="22.50mm" /><colspec colnum="5" colname="col5" colwidth="22.50mm" /><colspec colnum="6" colname="col6" colwidth="22.50mm" /><colspec colnum="7" colname="col7" colwidth="22.50mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col1" align="center">Verbindg. no.</entry><entry namest="col2" nameend="col2" align="center">reactant *</entry><entry namest="col3" nameend="col3" align="center">Quantity NEt<sub>3</sub>**</entry><entry namest="col4" nameend="col4" align="center">Acid chloride ***</entry><entry namest="col5" nameend="col5" align="center">yield</entry><entry namest="col6" nameend="col6" align="center">characterization</entry><entry namest="col7" nameend="col7" align="center">λ <sub>Max</sub>****</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="center"><b>1</b> (M = 365.51)</entry><entry namest="col2" nameend="col2" align="center"><b>A</b>, 15.7 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">11.1 g (110 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>D</b>, 24.5 g (100 mmol)</entry><entry namest="col5" nameend="col5" align="center">22.8 g (63%)</entry><entry namest="col6" nameend="col6" align="center">pale yellow oil</entry><entry namest="col7" nameend="col7" align="center">278 nm (vs) 325 nm (s)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>2</b> (M = 364.53)</entry><entry namest="col2" nameend="col2" align="center"><b>B</b>, 7.8 g (50 mmol)</entry><entry namest="col3" nameend="col3" align="center">5.6 g (55 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>D</b>, 12.2 g (50 mmol)</entry><entry namest="col5" nameend="col5" align="center">14.4 g (79%)</entry><entry namest="col6" nameend="col6" align="center">yellow Krist. Mp. = 200-01 ° C</entry><entry namest="col7" nameend="col7" align="center">255 nm (vs) 288 nm (s)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>3</b> (M = 420.65)</entry><entry namest="col2" nameend="col2" align="center"><b>C</b>, 21.2 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">11.1 g (110 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>D</b>, 24.5 g (100 mmol)</entry><entry namest="col5" nameend="col5" align="center">39.6 g (94%)</entry><entry namest="col6" nameend="col6" align="center">pale yellow oil</entry><entry namest="col7" nameend="col7" align="center">254 nm (vs) 340 nm (s)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>4</b> (M = 410.51)</entry><entry namest="col2" nameend="col2" align="center"><b>A</b>, 7.2 g (46 mmol)</entry><entry namest="col3" nameend="col3" align="center">5.1 g (50 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>e</b>, 13.3 g (46 mmol)</entry><entry namest="col5" nameend="col5" align="center">15.3 g (81%)</entry><entry namest="col6" nameend="col6" align="center">white, waxy</entry><entry namest="col7" nameend="col7" align="center">290 nm (vs) 350 nm (s)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>5</b> (M = 409.53)</entry><entry namest="col2" nameend="col2" align="center"><b>B</b>, 7.2 g (46 mmol)</entry><entry namest="col3" nameend="col3" align="center">5.1 g (50 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>e</b>, 13.3 g (46 mmol)</entry><entry namest="col5" nameend="col5" align="center">14.4 g (76%)</entry><entry namest="col6" nameend="col6" align="center">yellow Krist. Mp. = 216-18 ° C</entry><entry namest="col7" nameend="col7" align="center">257 nm (vs) 310 nm (s, sh)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>6</b> (M = 465.65)</entry><entry namest="col2" nameend="col2" align="center"><b>C</b>, 5.1 g (24 mmol)</entry><entry namest="col3" nameend="col3" align="center">2.7 g (27 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>e</b>, 7.0 g (24 mmol)</entry><entry namest="col5" nameend="col5" align="center">7.0 g (63%)</entry><entry namest="col6" nameend="col6" align="center">pale yellow oil</entry><entry namest="col7" nameend="col7" align="center">235 nm (vs) 270 nm (s) 340 nm (m, sh)</entry></row><row rowsep="1"><entry namest="col1" nameend="col7" align="justify">A = 2,2,6,6-tetramethylpiperidin-4-ol * (M = 157.29) B = 2,2,6,6-tetramethyl-4-piperidinamine * (M = 156.31) C = N-butyl-2,2,6,6-tetramethyl-4-piperidinamine * (M = 212.43) D = benzophenone-2-carboxylic acid chloride ***, (M = 244.68) E = 3-nitrobenzophenone-2<img file="EP0822221A2_D0008.tif" />-carbonsäurechlorid *** M = molecular weight; vs = very strong; s = strong; sh = shoulder; m = medium; w = weak</entry></row></tbody></tgroup><tgroup cols="7" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="22.50mm" /><colspec colnum="2" colname="col2" colwidth="22.50mm" /><colspec colnum="3" colname="col3" colwidth="22.50mm" /><colspec colnum="4" colname="col4" colwidth="22.50mm" /><colspec colnum="5" colname="col5" colwidth="22.50mm" /><colspec colnum="6" colname="col6" colwidth="22.50mm" /><colspec colnum="7" colname="col7" colwidth="22.50mm" /><tbody valign="top"><row><entry namest="col1" nameend="col7" align="justify">* Referred to by the company HÜLS AG, Marl.</entry></row><row><entry namest="col1" nameend="col7" align="justify">** Purchased by Aldrich GmbH & Co KG, Steinheim.</entry></row><row><entry namest="col1" nameend="col7" align="justify">*** Self-made product by a common method (organic carboxylic acid, reacted with SOCl<sub>2</sub>); The starting material of D is benzophenone-2-carboxylic acid ** The starting material of E is 3-nitrobenzophenone-2<img file="EP0822221A2_D0009.tif" />-carboxylic acid, which was prepared by a conventional method (Houben-Weyl X / 1, 471) (organic carboxylic acid, obtained from the company Aldrich GmbH & Co KG, Steinheim, reacted with nitrating acid).</entry></row><row><entry namest="col1" nameend="col7" align="justify">**** measured in ethanol</entry></row></tbody></tgroup></table></tables>
Intermediates 7 and 8:
<chemistry id="chem0008" num="0008"><img file="EP0822221A2_D0010.tif" /></chemistry>
General procedure: for the preparation of compounds 7 and 8:
About 50-120 mmol of compound F or G (cf. Table 2) and a slight excess of N, N-dimethylaniline are presented in a mixture of 150 ml of toluene and 50 ml of tetrahydrofuran. For 16 hours, a light stream of phosgene is passed through the solution at 50 ° C. After stirring for a further 2 hours at 80 ° C, the solution is poured onto water. The mixture is brought to pH 1 with 10% HCl and mixed with 50 ml of methylene chloride. The organic phase is washed with 10% HCl, separated, dried with sodium sulfate, filtered off from this and freed from solvent in vacuo. The chloroformate is isolated in the form of a bright, crystalline solid.
Examples 9-12:
<chemistry id="chem0009" num="0009"><img file="EP0822221A2_D0011.tif" /></chemistry>
General rule: for the preparation of compounds 9-12:
20-60 mmol of the compound A or C (see. Table 2) and a slight excess of an amine are presented in 150 ml of toluene. The chloroformate (7 or 8) is dissolved in 30 ml of toluene and slowly added to the initially charged solution at 20 ° C with ice cooling. After 2 h stirring at 22 ° C and 1 h at 107 ° C, the reaction mixture is poured into water and treated with 50 ml of methylene chloride. The organic phase is washed with water, dried with sodium sulfate and filtered. The volatiles are removed in vacuo, the residue is dried at 80 ° C in a vacuum. <tables id="tabl0002" num="0002"><table frame="all"><title>Table 2</title><tgroup cols="7" colsep="1" rowsep="1"><colspec colnum="1" colname="col1" colwidth="22.50mm" /><colspec colnum="2" colname="col2" colwidth="22.50mm" /><colspec colnum="3" colname="col3" colwidth="22.50mm" /><colspec colnum="4" colname="col4" colwidth="22.50mm" /><colspec colnum="5" colname="col5" colwidth="22.50mm" /><colspec colnum="6" colname="col6" colwidth="22.50mm" /><colspec colnum="7" colname="col7" colwidth="22.50mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col1" align="center">No.</entry><entry namest="col2" nameend="col2" align="center">1. reactant</entry><entry namest="col3" nameend="col3" align="center">Second reactant</entry><entry namest="col4" nameend="col4" align="center">Amin</entry><entry namest="col5" nameend="col5" align="center">yield</entry><entry namest="col6" nameend="col6" align="center">characterization</entry><entry namest="col7" nameend="col7" align="center">λ <sub>Max</sub>***</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="center"><b>7</b> (M = 260.68)</entry><entry namest="col2" nameend="col2" align="center"><b>F</b>, 9.5 g (48 mmol)</entry><entry namest="col3" nameend="col3" align="center">---</entry><entry namest="col4" nameend="col4" align="center"><b>H</b>, 7.3 g (60 mmol)</entry><entry namest="col5" nameend="col5" align="center">12.3 g (98%)</entry><entry namest="col6" nameend="col6" align="center">light green, krist. Mp = 64 -66 ° C</entry><entry namest="col7" nameend="col7" align="center">---</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>8th</b> (M = 339.14)</entry><entry namest="col2" nameend="col2" align="center"><b>G</b>, 25.0 g (117 mmol)</entry><entry namest="col3" nameend="col3" align="center">---</entry><entry namest="col4" nameend="col4" align="center"><b>H</b>, 30.5 g (252 mmol)</entry><entry namest="col5" nameend="col5" align="center">33.4 g (84%)</entry><entry namest="col6" nameend="col6" align="center">light gray, krist. Mp. = 106-108 ° C</entry><entry namest="col7" nameend="col7" align="center">---</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>9</b> (M = 381.51)</entry><entry namest="col2" nameend="col2" align="center"><b>A</b>, 6.3 g (40 mmol)</entry><entry namest="col3" nameend="col3" align="center"><b>7</b>, 10.5 g (40 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>I</b>, 3.8 g (48 mmol)</entry><entry namest="col5" nameend="col5" align="center">8.2 g (53%)</entry><entry namest="col6" nameend="col6" align="center">white, krist. Mp = 241-242 ° C</entry><entry namest="col7" nameend="col7" align="center">255 nm (vs)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>10</b> (M = 436.65)</entry><entry namest="col2" nameend="col2" align="center"><b>C</b>, 4.9 g (23 mmol)</entry><entry namest="col3" nameend="col3" align="center"><b>7</b>, 6.0 g (23 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>J</b>, 2.6 g (26 mmol)</entry><entry namest="col5" nameend="col5" align="center">7.3g (74%)</entry><entry namest="col6" nameend="col6" align="center">yellow oil</entry><entry namest="col7" nameend="col7" align="center">258 nm (vs)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>11</b> (M = 580.80)</entry><entry namest="col2" nameend="col2" align="center"><b>A</b>, 9.9 g (63 mmol)</entry><entry namest="col3" nameend="col3" align="center"><b>8th</b>, 10.2 g (30 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>J</b>, 6.7 g (66 mmol)</entry><entry namest="col5" nameend="col5" align="center">10.1 g (57%)</entry><entry namest="col6" nameend="col6" align="center">amber-colored oil</entry><entry namest="col7" nameend="col7" align="center">265 nm (vs)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>12</b> (M = 691.07)</entry><entry namest="col2" nameend="col2" align="center"><b>C</b>, 13.4 g (63 mmol)</entry><entry namest="col3" nameend="col3" align="center"><b>8th</b>, 8.4 g (25 mmol)</entry><entry namest="col4" nameend="col4" align="center"><b>J</b>, 6.7 g (66 mmol)</entry><entry namest="col5" nameend="col5" align="center">10.5 g (60%)</entry><entry namest="col6" nameend="col6" align="center">amber-colored oil</entry><entry namest="col7" nameend="col7" align="center">262 nm (vs)</entry></row><row rowsep="1"><entry namest="col1" nameend="col7" align="justify">A = 2,2,6,6-tetramethylpiperidin-4-ol ** (M = 157.29) B = N-butyl-2,2,6,6-tetramethyl-4-piperidinamine ** (M = 212.43) C = N-butyl-2,2,6,6-tetramethyl-4-piperidinamine * (M = 212.43) F = 4-hydroxybenzophenone * G = 4.4<img file="EP0822221A2_D0012.tif" />dihydroxybenzophenone * H = N, N-dimethylaniline * I = pyridine * J = triethylamine * </entry></row></tbody></tgroup><tgroup cols="7" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="22.50mm" /><colspec colnum="2" colname="col2" colwidth="22.50mm" /><colspec colnum="3" colname="col3" colwidth="22.50mm" /><colspec colnum="4" colname="col4" colwidth="22.50mm" /><colspec colnum="5" colname="col5" colwidth="22.50mm" /><colspec colnum="6" colname="col6" colwidth="22.50mm" /><colspec colnum="7" colname="col7" colwidth="22.50mm" /><tbody valign="top"><row><entry namest="col1" nameend="col7" align="justify">* Purchased by the company Aldrich GmbH & Co KG, Steinheim.</entry></row><row><entry namest="col1" nameend="col7" align="justify">** Purchased from the company HÜLS AG, Marl.</entry></row><row><entry namest="col1" nameend="col7" align="justify">*** measured in ethanol</entry></row></tbody></tgroup></table></tables>
Intermediates 13 - 19:
<chemistry id="chem0010" num="0010"><img file="EP0822221A2_D0013.tif" /></chemistry>
General procedure for the preparation of intermediates 13-19:
The reaction is carried out under nitrogen and with the exclusion of air and water. 40-100 mmol of the compound K - Q (cf. Table 3) are presented in 100 ml of anhydrous tetrahydrofuran. A 10% excess of sodium hydride (80% in paraffin) is added in portions at 20 ° C, the solution foams slightly and a precipitate precipitates. After stirring for 0.5 h, the process is complete and an equimolar amount of methyl bromoacetate is slowly added. After 8 h of stirring at 66 ° C, the color of the suspension brightens significantly. The volatiles are removed in vacuo, the residue treated with 50 ml of methylene chloride and poured three times with 50 ml of water. The organic phase is dried with sodium sulphate, filtered off from this, and the volatiles are removed in vacuo. <tables id="tabl0003" num="0003"><table frame="all"><title>Table 3</title><tgroup cols="6" colsep="1" rowsep="1"><colspec colnum="1" colname="col1" colwidth="26.25mm" /><colspec colnum="2" colname="col2" colwidth="26.25mm" /><colspec colnum="3" colname="col3" colwidth="26.25mm" /><colspec colnum="4" colname="col4" colwidth="26.25mm" /><colspec colnum="5" colname="col5" colwidth="26.25mm" /><colspec colnum="6" colname="col6" colwidth="26.25mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col1" align="center">Experiment no.</entry><entry namest="col2" nameend="col2" align="center">reactant</entry><entry namest="col3" nameend="col3" align="center">NaH (80% in paraffin) *</entry><entry namest="col4" nameend="col4" align="center">bromoacetate *</entry><entry namest="col5" nameend="col5" align="center">yield</entry><entry namest="col6" nameend="col6" align="center">characterization</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="center"><b>13</b> (M = 358.4)</entry><entry namest="col2" nameend="col2" align="center"><b>K</b>, 17.1 g (80 mmol)</entry><entry namest="col3" nameend="col3" align="center">5.3 g (176 mmol)</entry><entry namest="col4" nameend="col4" align="center">25.7 g (168 mmol)</entry><entry namest="col5" nameend="col5" align="center">26.1 g (91%)</entry><entry namest="col6" nameend="col6" align="center">colorless cryst. Mp = 178-179 ° C</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>14</b> (M = 270.3)</entry><entry namest="col2" nameend="col2" align="center"><b>L</b>, 19.8 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">3.3 g (111 mmol)</entry><entry namest="col4" nameend="col4" align="center">16.1 g (105 mmol)</entry><entry namest="col5" nameend="col5" align="center">23.7 g (88%)</entry><entry namest="col6" nameend="col6" align="center">yellow, crystalline mp. = 99-101 ° C</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>15</b> (M = 327.3)</entry><entry namest="col2" nameend="col2" align="center"><b>M</b>, 15.4 g (60 mmol)</entry><entry namest="col3" nameend="col3" align="center">2.0 g (66 mmol)</entry><entry namest="col4" nameend="col4" align="center">9.2 g (60 mmol)</entry><entry namest="col5" nameend="col5" align="center">13.5 g (68%)</entry><entry namest="col6" nameend="col6" align="center">beige, crystalline mp. = 132-133 ° C</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>16</b> (M = 329.3)</entry><entry namest="col2" nameend="col2" align="center"><b>N</b>, 25.7 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">3.3 g (110 mmol)</entry><entry namest="col4" nameend="col4" align="center">15.3 g (100 mmol)</entry><entry namest="col5" nameend="col5" align="center">25.3 g (77%)</entry><entry namest="col6" nameend="col6" align="center">brown oil, it. <sup>1</sup>H NMR pure</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>17</b> (M = 315.1)</entry><entry namest="col2" nameend="col2" align="center"><b>O</b>, 24.3 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">3.3 g (110 mmol)</entry><entry namest="col4" nameend="col4" align="center">15.3 g (100 mmol)</entry><entry namest="col5" nameend="col5" align="center">20.0 g (63%)</entry><entry namest="col6" nameend="col6" align="center">pale yellow, krist. Mp = 136 ° C</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>18</b> (M = 403.4)</entry><entry namest="col2" nameend="col2" align="center"><b>P</b>, 25.9 g (100 mmol)</entry><entry namest="col3" nameend="col3" align="center">6.2 g (220 mmol)</entry><entry namest="col4" nameend="col4" align="center">30.6 g (200 mmol)</entry><entry namest="col5" nameend="col5" align="center">32.3 g (80%)</entry><entry namest="col6" nameend="col6" align="center">golden yellow, krist. Mp = 149-150 ° C</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>19</b> (M = 403.4)</entry><entry namest="col2" nameend="col2" align="center"><b>Q</b>, 11.7 g (45 mmol)</entry><entry namest="col3" nameend="col3" align="center">3.0 g (100 mmol)</entry><entry namest="col4" nameend="col4" align="center">13.8 g (90 mmol)</entry><entry namest="col5" nameend="col5" align="center">15.9 g (88%)</entry><entry namest="col6" nameend="col6" align="center">golden yellow oil <sup>1</sup>H NMR pure</entry></row><row rowsep="1"><entry namest="col1" nameend="col6" align="justify">K = 4.4<img file="EP0822221A2_D0014.tif" />dihydroxybenzophenone * L = 4-hydroxybenzophenone * M = 2-methyl-4-hydroxy-4<img file="EP0822221A2_D0015.tif" />-nitrobenzophenon ** N = 2-methyl-4-hydroxy-3<img file="EP0822221A2_D0016.tif" />-nitrobenzophenon ** O = 4-hydroxy-4<img file="EP0822221A2_D0017.tif" />-nitrobenzophenon ** P = 3,4-dihydroxy-4<img file="EP0822221A2_D0018.tif" />-nitrobenzophenon ** Q = 3,4-dihydroxy-3<img file="EP0822221A2_D0019.tif" />-nitrobenzophenon ** </entry></row></tbody></tgroup><tgroup cols="6" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="26.25mm" /><colspec colnum="2" colname="col2" colwidth="26.25mm" /><colspec colnum="3" colname="col3" colwidth="26.25mm" /><colspec colnum="4" colname="col4" colwidth="26.25mm" /><colspec colnum="5" colname="col5" colwidth="26.25mm" /><colspec colnum="6" colname="col6" colwidth="26.25mm" /><tbody valign="top"><row><entry namest="col1" nameend="col6" align="justify">* Purchased by the company Aldrich GmbH & Co KG, Steinheim.</entry></row><row><entry namest="col1" nameend="col6" align="justify">** Self-made product by a common method (Friedel-Crafts acylation) according to Houben-Weyl VII / 2a, 15)</entry></row></tbody></tgroup></table></tables>
Examples 20-26:
<chemistry id="chem0011" num="0011"><img file="EP0822221A2_D0020.tif" /></chemistry>
General procedure: for the preparation of compounds 20-26:
20 40 mmol of the methyl ester (13-19) described are mixed with an equimolar amount of 2,2,6,6-tetramethylpiperidin-4-ol (cf. Table 4) and 200 mg of lithium amide (9 mmol) in 200 ml of xylene at 135 ° C for 8 h, wherein the slowly formed methanol is slowly distilled off slowly with some xylene. The mixture is poured into water after cooling. The organic phase is washed three times with 50 ml of water, dried with sodium sulfate and filtered off from this. After removal of the volatiles in vacuo, the product is dried at 80 ° C in a vacuum. <tables id="tabl0004" num="0004"><table frame="all"><title>Table 4</title><tgroup cols="6" colsep="1" rowsep="1"><colspec colnum="1" colname="col1" colwidth="26.25mm" /><colspec colnum="2" colname="col2" colwidth="26.25mm" /><colspec colnum="3" colname="col3" colwidth="26.25mm" /><colspec colnum="4" colname="col4" colwidth="26.25mm" /><colspec colnum="5" colname="col5" colwidth="26.25mm" /><colspec colnum="6" colname="col6" colwidth="26.25mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col1" align="center">Experiment no.</entry><entry namest="col2" nameend="col2" align="center">1. reactant</entry><entry namest="col3" nameend="col3" align="center">Second reactant *</entry><entry namest="col4" nameend="col4" align="center">yield</entry><entry namest="col5" nameend="col5" align="center">characterization</entry><entry namest="col6" nameend="col6" align="center">λ<sub>Max</sub>**</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="center"><b>20</b> (M = 608.90)</entry><entry namest="col2" nameend="col2" align="center"><b>13</b>, 9.0 g (25 mmol)</entry><entry namest="col3" nameend="col3" align="center">7.9 g (50 mmol)</entry><entry namest="col4" nameend="col4" align="center">15.0 g (99%)</entry><entry namest="col5" nameend="col5" align="center">colorless, krist. Mp = 125-128 ° C</entry><entry namest="col6" nameend="col6" align="center">286 nm (vs) 330 nm (m, sh)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>21</b> (M = 395.54)</entry><entry namest="col2" nameend="col2" align="center"><b>14</b>, 18.8 g (40 mmol)</entry><entry namest="col3" nameend="col3" align="center">6.3 g (40 mmol)</entry><entry namest="col4" nameend="col4" align="center">14.9 g (95%)</entry><entry namest="col5" nameend="col5" align="center">pale yellow, krist. Mp = 79-80 ° C</entry><entry namest="col6" nameend="col6" align="center">284 nm (vs) 340 (m, sh)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>22</b> (M = 453.56))</entry><entry namest="col2" nameend="col2" align="center"><b>15</b>, 13.1 g (40 mmol)</entry><entry namest="col3" nameend="col3" align="center">6.3 g (40 mmol)</entry><entry namest="col4" nameend="col4" align="center">13.6 g (75%)</entry><entry namest="col5" nameend="col5" align="center">pale yellow, krist. Mp = 99-101 ° C</entry><entry namest="col6" nameend="col6" align="center">266 nm (vs) 305nm (s, sh)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>23</b> (M = 454.57)</entry><entry namest="col2" nameend="col2" align="center"><b>16</b>, 13.2 g (40 mmol)</entry><entry namest="col3" nameend="col3" align="center">6.3 g (40 mmol)</entry><entry namest="col4" nameend="col4" align="center">15.3 g (84%)</entry><entry namest="col5" nameend="col5" align="center">orange oil, It. <sup>1</sup>H NMR pure</entry><entry namest="col6" nameend="col6" align="center">272.290 nm (vs) 350 nm (s)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>24</b> (M = 440.54))</entry><entry namest="col2" nameend="col2" align="center"><b>17</b>, 12.6 g (40 mmol)</entry><entry namest="col3" nameend="col3" align="center">6.3 g (40 mmol)</entry><entry namest="col4" nameend="col4" align="center">16.0 g (91%)</entry><entry namest="col5" nameend="col5" align="center">yellow, crystalline mp. = 125-126 ° C</entry><entry namest="col6" nameend="col6" align="center">275 nm (vs) 295nm (s, sh)</entry></row><row><entry namest="col1" nameend="col1" align="center"><b>25</b> (M = 653.85)</entry><entry namest="col2" nameend="col2" align="center"><b>18</b>, 10.1 g (25 mmol)</entry><entry namest="col3" nameend="col3" align="center">7.9 g (50 mmol)</entry><entry namest="col4" nameend="col4" align="center">13.8 g (84%)</entry><entry namest="col5" nameend="col5" align="center">beige, crystalline mp. = 128-131 ° C</entry><entry namest="col6" nameend="col6" align="center">278.320 nm (vs) 450 nm (w, sh)</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="center"><b>26</b> (M = 653.85)</entry><entry namest="col2" nameend="col2" align="center"><b>19</b>, 14.5 g (36 mmol)</entry><entry namest="col3" nameend="col3" align="center">11.3 g (72 mmol)</entry><entry namest="col4" nameend="col4" align="center">5.3g (22%)</entry><entry namest="col5" nameend="col5" align="center">brown oil, it. <sup>1</sup>H NMR pure</entry><entry namest="col6" nameend="col6" align="center">275 nm (vs) 310 nm (s)</entry></row></tbody></tgroup><tgroup cols="6" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="26.25mm" /><colspec colnum="2" colname="col2" colwidth="26.25mm" /><colspec colnum="3" colname="col3" colwidth="26.25mm" /><colspec colnum="4" colname="col4" colwidth="26.25mm" /><colspec colnum="5" colname="col5" colwidth="26.25mm" /><colspec colnum="6" colname="col6" colwidth="26.25mm" /><tbody valign="top"><row><entry namest="col1" nameend="col6" align="justify">* 2,2,6,6-Tetramethylpiperidin-4-ol, obtained from the company HÜLS AG, Marl.</entry></row><row><entry namest="col1" nameend="col6" align="justify">** Compounds 20, 21 were in ethanol, Compounds 22, 24, 25 in DMSO, Compounds 23, 26 in CH 2 Cl 2<sub>3</sub> measured.</entry></row></tbody></tgroup></table></tables>
Example 27: Light stabilizing effect in polypropylene films
100 Parts by weight of unstabilized polypropylene ®Hostal PPK together with 0.1 part by weight of calcium stearate, 0.05 part by weight of pentaerythrityl-tetrakis-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate and 0.1 part by weight of the test to be tested Stabilizer in a Brabender mixer kneaded for 10 min at 200 ° C and 20 U / min. From this mixture, a 100 micron thick film was pressed at 190 ° C and exposed the test specimens obtained in this way in a weathering device (®Xenotest 1200) over a period of 500 hours. As a criterion of the stability of the film, the change in the carbonyl index was used within this period. The carbonyl CO was in this case according to the formula CO = E<sub>1720</sub>/ e<sub>2020</sub> (E means the absorbance at the respective wavelength). For comparison purposes, a film was tested under the same conditions, but without the addition of a stabilizer according to the invention. The test results are summarized in Table 5:<tables id="tabl0005" num="0005"><table frame="all"><title>Table 5</title><tgroup cols="2" colsep="1" rowsep="0"><colspec colnum="1" colname="col1" colwidth="78.75mm" /><colspec colnum="2" colname="col2" colwidth="78.75mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col2" align="center">Increase of carbonyl index after 500 hours of exposure:</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">stabilizer</entry><entry namest="col2" nameend="col2" align="left">Δ (CO)</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="left">Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate</entry><entry namest="col2" nameend="col2" align="left">0.02</entry></row><row><entry namest="col1" nameend="col1" align="left">from example 20</entry><entry namest="col2" nameend="col2" align="left">0.20</entry></row><row><entry namest="col1" nameend="col1" align="left">from example 25</entry><entry namest="col2" nameend="col2" align="left">0.23</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">none</entry><entry namest="col2" nameend="col2" align="left">(400 h: 2.0) *</entry></row></tbody></tgroup><tgroup cols="2" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="78.75mm" /><colspec colnum="2" colname="col2" colwidth="78.75mm" /><tbody valign="top"><row><entry namest="col1" nameend="col2" align="justify">* Already after 400 h, the film begins to embrittle so much that the attempt must be terminated.</entry></row></tbody></tgroup></table></tables>
Table 5 emphasizes the very good light stability of stabilized polypropylene according to the invention compared to unstabilized polypropylene, with almost the light stability of bis (2,2,6,6-tetramethyl-4-piperidyl) sebacat stabilized polypropylene is achieved.
Example 28: Light-stabilizing effect in polypropylene films with extraction
100 Parts by weight of unstabilized polypropylene ®Hostal PPK together with 0.1 part by weight of calcium stearate, 0.05 part by weight of pentaerythrityl-tetrakis-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate and 0.1 part by weight of the test to be tested Stabilizer in a Brabender mixer kneaded for 10 min at 200 ° C and 20 U / min. From this mixture, a 100 micron thick film was pressed at 190 ° C and exposed the test specimens obtained in this way in a weatherometer (®Xenotest 1200) for 200 hours. After this pre-exposure, the pieces of film were extracted with methylene chloride (24 h, 40 ° C) and then exposed for a further 300 hours. As a criterion of the stability of the film, the change in the carbonyl index within this period (500 h total coating time) was used. The carbonyl CO was in this case according to the formula CO = E<sub>1720</sub>/ e<sub>2020</sub> certainly. For comparison purposes, a film was tested under the same conditions, but without the addition of a stabilizer according to the invention. The test results are summarized in Table 6:<tables id="tabl0006" num="0006"><table frame="all"><title>Table 6</title><tgroup cols="2" colsep="1" rowsep="0"><colspec colnum="1" colname="col1" colwidth="78.75mm" /><colspec colnum="2" colname="col2" colwidth="78.75mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col2" align="center">Carbonyl index increase after 200 h pre-exposure, extraction with methylene chloride (24 h, 40 ° C.) and 300 hours further exposure (gives 500 h total exposure time):</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">stabilizer</entry><entry namest="col2" nameend="col2" align="left">Δ (CO)</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="left">Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate</entry><entry namest="col2" nameend="col2" align="left">1.08</entry></row><row><entry namest="col1" nameend="col1" align="left">from example 20</entry><entry namest="col2" nameend="col2" align="left">0.72</entry></row><row><entry namest="col1" nameend="col1" align="left">from example 25</entry><entry namest="col2" nameend="col2" align="left">0.86</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">none</entry><entry namest="col2" nameend="col2" align="left">(400 h: 2.0) *</entry></row></tbody></tgroup><tgroup cols="2" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="78.75mm" /><colspec colnum="2" colname="col2" colwidth="78.75mm" /><tbody valign="top"><row><entry namest="col1" nameend="col2" align="justify">* Already after 400 h (200 h pre-exposure + 200 h further exposure), the film begins to embrittle so much that the experiment must be terminated.</entry></row></tbody></tgroup></table></tables>
Table 6 proves that the light protection effect of the stabilizers according to the invention is maintained even after extraction with methylene chloride, and is better than bis (2,2,6,6-tetramethyl (4-piperidyl) sebacate.
Example 29: Extraction behavior of the stabilizers in polypropylene films after exposure:
The test specimens prepared analogously to Example 27 were exposed for 200 hours in a weathering device (®Xenotest 1200). Thereafter, the test specimens were subjected to a hot extraction with methylene chloride and the remaining in the film, non-extractable residual content of stabilizer determined by a nitrogen determination (chemiluminescent method). Before the beginning of the exposure, the predominant proportion of stabilizer with methylene chloride was extractable from the test specimens under the extraction conditions used. The test results are summarized in Table 7. <tables id="tabl0007" num="0007"><table frame="all"><title>Table 7</title><tgroup cols="4" colsep="1" rowsep="0"><colspec colnum="1" colname="col1" colwidth="39.37mm" /><colspec colnum="2" colname="col2" colwidth="39.37mm" /><colspec colnum="3" colname="col3" colwidth="39.37mm" /><colspec colnum="4" colname="col4" colwidth="39.37mm" /><thead valign="top"><row rowsep="1"><entry namest="col1" nameend="col4" align="center">Exhaustive hot extraction of the PP films with methylene chloride after 200h pre-exposure</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">stabilizer</entry><entry namest="col2" nameend="col2" align="center">Amount in the slide at the beginning [%]</entry><entry namest="col3" nameend="col3" align="center">Quantity after 200h exposure and extraction * [%]</entry><entry namest="col4" nameend="col4" align="center">non-extractable amount of stabilizer</entry></row></thead><tbody valign="top"><row><entry namest="col1" nameend="col1" align="left">comparison</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0.028</entry><entry namest="col4" nameend="col4" align="right">28%</entry></row><row><entry namest="col1" nameend="col1" align="left">Connection 1</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0.067</entry><entry namest="col4" nameend="col4" align="right">67%</entry></row><row><entry namest="col1" nameend="col1" align="left">Connection 6</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0.058</entry><entry namest="col4" nameend="col4" align="right">58%</entry></row><row><entry namest="col1" nameend="col1" align="left">Connection 20</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0,071</entry><entry namest="col4" nameend="col4" align="right">71%</entry></row><row><entry namest="col1" nameend="col1" align="left">Connection 22</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0,061</entry><entry namest="col4" nameend="col4" align="right">61%</entry></row><row rowsep="1"><entry namest="col1" nameend="col1" align="left">Connection 25</entry><entry namest="col2" nameend="col2" align="char" char=",">0.1</entry><entry namest="col3" nameend="col3" align="char" char=",">0.067</entry><entry namest="col4" nameend="col4" align="right">67%</entry></row><row rowsep="1"><entry namest="col1" nameend="col4" align="justify">Comparison = bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate </entry></row></tbody></tgroup><tgroup cols="4" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="39.37mm" /><colspec colnum="2" colname="col2" colwidth="39.37mm" /><colspec colnum="3" colname="col3" colwidth="39.37mm" /><colspec colnum="4" colname="col4" colwidth="39.37mm" /><tbody valign="top"><row><entry namest="col1" nameend="col4" align="justify">* Extraction with methylene chloride, (24 h, 40 ° C)</entry></row></tbody></tgroup></table></tables>
The stabilizers according to the invention are significantly less readily extractable after exposure for 200 h by the molecular weight change occurring with methylene chloride than before the exposure. The comparative experiment shows that the prior art stabilizers are almost completely extractable.
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| Designation fees paidAT BE CH DE ES FR GB IT LI NLAKX | AKX | |
| Designated contracting statesAK | AK | |
| Main classification (correction)RHK1 | RHK1 | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 0822221
- Publication, DOCDB
- 0822221
- Publication, EPODOC
- EP0822221
- Application
- 97112675
- Application, DOCDB
- 97112675
- Application, EPODOC
- EP19970112675
Titles3
- English
- Novel light stabilisers based on sterically hindered amines
- German
- Neue Lichtstabilisatoren auf Basis von sterisch gehinderten Aminen
- French
- Nouveaux agents protecteurs à la lumière à base d'amines stériquement encombrées
Classification
- CPC, 8
- C08K5/353
- C07D211/22
- C08K5/3435
- C07D251/28
- C07D251/30
- C07D251/42
- C07D401/12
- C07D401/14
- IPC, 11
- C07D211 58
- C07D211 94
- C07D401 12
- C07D401 14
- C08K5 34
- C08K5 3432
- C07D211 46
- C08K5 3435
- C08K5 3492
- C08K5 353
- C08L101 00
Designated states18
- Contracting states, 18
- Austria
- Belgium
- Switzerland
- Germany
- Denmark
- Spain
- Finland
- France
- United Kingdom
- Greece
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Sweden
