Thermoplastic elastomer with high resistance, elasticity and good paintability and high impact resistant polymer blends prepared therefrom
Abstract
Thermoplastische Elastomere hoher Festigkeit, Elastizität und guter Einfärbbarkeit, deren eingelagerte Elastomerpartikel einen mittleren Partikeldurchmesser von 0,05 bis 5 µm haben, aus Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C2-C8-Olefin-Co- und/oder -Terpolymeren und mehrfunktionell ungesättigten Monomeren werden bei einem Verfahren gebildet, bei dem Mischungen aus Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C2-C8-Olefin-Co- und/oder -Terpolymeren und leichtflüchtigen C4-C7-Dienen in der Schmelze umgesetzt werden. Die thermoplastischen Elastomere sowie Mischungen mit üblichen Polyolefinen sind für den Einsatz in der Fahrzeugindustrie, Haushaltsgeräteindustrie, auf dem Bausektor und in der Medizintechnik geeignet.
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10 claims: 6 independent, 4 dependent
- 1Thermoplastische Elastomere hoher Festigkeit, Elastizität und guter Einfärbbarkeit, deren eingelagerte Elastomerpartikel einen mittleren Partikeldurchmesser von 0,05 bis 5 µm, bevorzugt 0,1 bis 1 µm, haben, aus Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C 2 -C 8 -Olefin-Co- und/oder -Terpolymeren, mehrfunktionell ungesättigten Monomeren, gegebenenfalls thermisch zerfallenden Radikalbildnern und Hilfsstoffen, dadurch gekennzeichnet, daß die thermoplastischen Elastomere nach einem Verfahren hergestellt worden sind, bei dem Mischungen aus 20 bis 80 Masse%, bevorzugt 40 bis 60 Masse%, Propylen-Homopolymeren und/oder Propylen-Copolymeren, 80 bis 20 Masse%, bevorzugt 60 bis 40 Masse%, elastomeren C 2 -C 8 -Olefin-Co- und/oder -Terpolymeren, 0,10 bis 4,0 Masse%, bevorzugt 0,2 bis 1,5 Masse%, bezogen auf die Summe der eingesetzten Polymere, leichtflüchtigen C 4 -C 7 -Dienen und 0 bis 4,0 Masse%, bevorzugt 0,2 bis 1,5 Masse%, bezogen auf die Summe der eingesetzten Polymere, Acylperoxiden, Alkylperoxiden, Hydroperoxiden, Peroxycarbonaten, Perestern, Ketonperoxiden, Peroxiketalen und/oder Azoverbindungen als thermisch zerfallende Radikalbildner in der Schmelze umgesetzt 'worden sind, wobei vor und/oder nach der Umsetzung 0,01 bis 40 Masse%, bezogen auf die Summe der eingesetzten Polymere, Hilfsstoffe zugesetzt werden können.
- 2Thermoplastische Elastomere nach Anspruch 1, dadurch gekennzeichnet, daß die als Propylen-Homopolymere und/oder Propylen-Copolymere eingesetzten Polypropylene a) weitgehend isotaktische Propylen-Homopolymere, die bevorzugt unter Anwendung von Ziegler-Natta-Katalysatoren oder Metallocenkatalysatoren hergestellt worden sind, oder b) Copolymere aus Propylen und Ethylen bzw. α-Olefinen mit 4 bis 18 C-Atomen, bevorzugt statistische Propylen-Copolymere, Propylen-Blockcopolymere und/oder statistische Propylen-Blockcopolymere oder c) Mischungen aus 50 bis 98 Masse% der Polymeren a) und/oder b) und 2 bis 50 Masse% von c1) nichtisotaktischen Propylen-Homopolymeren mit einem Schmelzpunkt von 145 bis 165°C, einer Schmelzviscosität von 200000 bis 2000000 cps bei 190°C, einer Kristallisationswärme von 4 bis 10 cal/g und einem löslichen Anteil in Diethylether von 35 Masse% bis 55 Masse%;c2) weitgehend amorphen Propylen-Homopolymere oder Propylen-Copolymeren mit einem Anteil an kristallinem Propylen-Homopolymer bzw. kristallinem Propylen-Copolymer unter 10 Masse%, einer Schmelzenthalpie unter 40 J/g und einem Schmelzindex von 0,1 bis 100 g/10 min bei 230°C/2,16 kg, wobei das weitgehend amorphe Polypropylen ein Homopolymer des Propylens und/oder ein Copolymer des Propylens aus mindestens 80 Mol % Propylen und höchstens 20 Mol % eines oder mehrerer α-Olefine der allgemeinen Formel CH 2 =CHR ist, wobei R ein linearer oder verzweigter Alkylrest mit 2 bis 8 Kohlenstoffatomen ist;und/oder c3) nichtlinearen modifizierten Propylen-Homopolymeren und/oder Propylen-Copolymeren mit Schmelzindices von 0,1 bis 30 g/10 min bei 230°C/2,16 kg und einem Quotienten aus der Grenzviscosität des nichtlinearen modifizierten Propylen-Homopolymeren und/oder Propylen-Copolymeren und der Grenzviscosität des linearen Propylen-Homopolymeren und/oder Propylen-Copolymeren mit weitgehend gleichem Molmassen-Gewichtsmittel von 0,20 bis 0,99;oder d) Mischungen der Polymere a) bis c) sind.
- 3Thermoplastische Elastomere nach Anspruch 1, dadurch gekennzeichnet, daß die Propylen-Copolymere aus einem Blend aus a) 60 bis 98 Masse% eines kristallinen Copolymeren aus 85 bis 99,5 Masse% Propylen und 15 bis 0,5 Masse% Ethylen und/oder einem α-Olefin der allgemeinen Formel CH 2 =CHR, wobei R ein linearer oder verzweigter Alkylrest mit 2 bis 8 Kohlenstoffatomen ist, b) 2 bis 40 Masse% eines elastischen Copolymers aus 20 bis 70 Masse% Ethylen und 80 bis 30 Masse% Propylen und/oder einem α-Olefin der allgemeinen Formel CH 2 =CHR, wobei R ein linearer oder verzweigter Alkylrest mit 2 bis 8 Kohlenstoffatomen ist, bestehen.
- 4Thermoplastische Elastomere nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die elastomeren C 2 -C 8 -Olefin-Co- und/oder -Terpolymere Ethylen-Propylen-Elastomere, Ethylen-Propylen-Dien-Elastomere, Ethylen-Vinylacetat-Copolyere , chlorsulfoniertes Polyethylen, Ethylen-Styren-Elastomere, elastomere Copolymere aus Ethylen und C 4 -C 8 -Olefinen - bevorzugt elastomere Ethylen-Buten-Copolymere, Ethylen-Hexen-Copolymere und/oder Ethylen-Octen-Copolymere -, elastomere Butadien-Styren-Co- und/oder -Terpolymere - bevorzugt Styren-Ethylen-Butadien-Styren-Blockcopolymere -, und/oder Styren-Isopren-Co- und/oder -Terpolymere sind.
- 5Thermoplastische Elastomere nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die leichtflüchtigen C 4 -C 7 -Diene Butadien, Chloropren, Cyclohexadien, Cyclopentadien, Dimethylbutadien, Heptadien, Hexadien, Isopren und/oder 1,4-Pentadien sind.
- 6Hochschlagzähe Polymerblends aus a) 5 bis 95 Masse%, bevorzugt 10 bis 50 Masse%, an thermoplastischen Elastomeren nach einem oder mehreren der Ansprüche 1 bis 5 und b) 95 bis 5 Masse%, bevorzugt 90 bis 50 Masse%, an b1) nichtmodifizierten Polyolefinen, bevorzugt an weitgehend isotaktischen Propylen-Homopolymeren, Copolymeren aus Propylen und Ethylen bzw. α-Olefinen mit 4 bis 18 C-Atomen - insbesondere statistischen Propylen-Copolymeren, Propylen-Blockcopolymeren und/oder statistischen Propylen-Blockcopolymeren -, nicht-isotaktischen Propylen-Homopolymeren, weitgehend amorphen Polypropylenen, nichtlinearen Propylenpolymeren und/oder b2) Blends aus b2.1) 60 bis 98 Masse% eines kristallinen Copolymeren aus 85 bis 99,5 Masse% Propylen und 15 bis 0,5 Masse% Ethylen und/oder einem α-Olefin der allgemeinen Formel CH 2 =CHR, wobei R ein linearer oder verzweigter Alkylrest mit 2 bis 8 Kohlenstoffatomen ist, b2.2) 2 bis 40 Masse% eines elastischen Copolymers aus 20 bis 70 Masse% Ethylen und 80 bis 30 Masse% Propylen und/oder einem α-Olefin der allgemeinen Formel CH 2 =CHR, wobei R ein linearer oder verzweigter Alkylrest mit 2 bis 8 Kohlenstoffatomen ist.
- 7Verfahren zur Herstellung thermoplastischer Elastomerer hoher Festigkeit, Elastizität und guter Einfärbbarkeit, deren eingelagerte Elastomerpartikel einen mittleren Partikeldurchmesser von 0,05 bis 5 µm, bevorzugt 0,1 bis 1 µm, haben, aus Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C 2 -C 8 -Olefin-Co- und/oder -Terpolymeren, mehrfunktionell ungesättigten Monomeren, gegebenenfalls thermisch zerfallenden Radikalbildnern und Hilfsstoffen, dadurch gekennzeichnet, daß Mischungen aus 20 bis 80 Masse%, bevorzugt 40 bis 60 Masse%, Propylen-Homopolymeren und/oder Propylen-Copolymeren, 80 bis 20 Masse%, bevorzugt 60 bis 40 Masse%, elastomeren C 2 -C 8 -Olefin-Co- und/oder -Terpolymeren, 0,10 bis 4,0 Masse%, bevorzugt 0,2 bis 1,5 Masse%, bezogen auf die Summe der eingesetzten Polymere, leichtflüchtigen C 4 -C 7 -Dienen und 0 bis 4,0 Masse%, bevorzugt 0,2 bis 1,5 Masse%, bezogen auf die Summe der eingesetzten Polymere, Acylperoxiden, Alkylperoxiden, Hydroperoxiden, Peroxycarbonaten, Perestern, Ketonperoxiden, Peroxiketalen und/oder Azoverbindungen als thermisch zerfallende Radikalbildner in kontinuierlichen Knetern in der Schmelze bei Massetemperaturen von 150 bis 300°C, bevorzugt von 185 bis 245°C, und Verweilzeiten von 1 min bis 35 min, bevorzugt 2,5 bis 6 min, umgesetzt werden, wobei vor und/oder nach der Umsetzung 0,01 bis 40 Masse%, bezogen auf die Summe der eingesetzten Polymere, Hilfsstoffe zugesetzt werden können.
- 8Verfahren zur Herstellung thermoplastischer Elastomerer nach Anspruch 7, dadurch gekennzeichnet, daß die leichtflüchtigen C 4 -C 7 -Diene und/oder Acylperoxide, Alkylperoxide, Hydroperoxide, Peroxycarbonate, Perester, Ketonperoxide, Peroxiketale und/oder Azoverbindungen als thermisch zerfallende Radikalbildner im kontinuierlichen Kneter in die Schmelze der Mischung aus Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C 2 -C 8 -Olefin - Co- und/oder -Terpolymeren und gegebenenfalls Hilfsstoffen leichtflüchtigen C 4 -C 7 -Dienen und/oder thermisch zerfallenden Radikalbildnern dosiert werden.
- 9Verfahren zur Herstellung thermoplastischer Elastomerer nach Anspruch 7, dadurch gekennzeichnet, daß die Mischung der Propylen-Homopolymeren und/oder Propylen-Copolymeren, elastomeren C 2 -C 8 -Olefin -Co- und/oder -Terpolymeren und gegebenenfalls Hilfsstoffe mit den leichtflüchtigen C 4 -C 7 -Dienen und/oder thermisch zerfallenden Radikalbildnern durch Vormischung und/oder durch Sorption aus Gasphase in kontinuierlichen Durchflußmischern vor Dosierung der Mischungen in den kontinuierlichen Kneter erfolgt.
- 10Verwendung von thermoplastischen Elastomeren nach einem oder mehreren der Ansprüche 1 bis 6 sowie von Mischungen der thermoplastischen Elastomeren mit üblichen Polyolefinen in der Fahrzeugindustrie, bevorzugt für Schlauchverbinder, Luftansaugkanäle, Rohrmuffen und Dichtungsprofile, in der Haushaltsgeräteindustrie, bevorzugt für Verbinder und Dichtungsprofile, auf dem Bausektor, bevorzugt für Fensterabdichtungen, Dichtungsprofile für Zwischenwände, Dehnungsfugen und im Installationsbereich sowie in der Medizintechnik, bevorzugt für Schläuche, Dichtungen, Spritzen und Kolben.
Independent claims10
99 paragraphs, as filed
0001The invention relates to thermoplastic elastomers of high strength, elasticity and good colorability and high impact polymer blends produced therefrom, the for use in the automotive industry, the household appliance industry and in the Medical suitable. The invention also relates to a method for Preparation of these thermoplastic elastomers.
0002Thermoplastic elastomers such as styrene-butadiene block copolymers, thermoplastic, Polyurethanes, polyesteramides, Polyätheramide, thermoplastic copolyester elastomers and polyolefin alloys with elastomers are known [Rader, C., Plastics 83 (1993) 10, 777-781; Plastics 86 (1996) 12, 1845-1851].
0003The particular advantage of polyolefin alloys with elastomers as thermoplastic Elastomers is the easy processability and low recyclability these products.
0004Decisive for the material properties of thermoplastic elastomers based on of polyolefin alloys with elastomers such as strength and elasticity are the Composition of the polyolefin and the elastomeric component and the Distribution of the elastomeric component in the polyolefin (Moore, P., Polypropylene Handbook, Carl Hanser Verlag Munich 1996, 218-225).
0005Known Elastkomponenten for thermoplastic elastomers based on polypropylene are ethylene-propylene elastomers (EP 672,712; EP 614,940), ethylene-propylene-diene elastomers (EP 547843; EP 409542), ethylene-vinyl acetate Copolyere [BE 899,507; Coran, A. Rubber Chem. Technol. 54 (1981), 892], chlorosulfonated Polyethylene (US 41 41 878), elastomeric copolymers of ethylene and C<sub>4</sub>-C<sub>8th</sub>olefins such as elastomeric ethylene-butene copolymers, ethylene-hexene copolymers or ethylene-octene copolymers [Yamaguchi, M., J. Appl. Polymer Sci. 62 (1996), 87-97; 63 (1997), 467-474; Yu, T., J. Plastic Film & Sheeting 10 (1994) 1, 539-564] and elastomeric atactic polypropylenes (EP 334 829) at levels 35 to 70 % By weight based on the polyolefin.
0006It is also known, in polyolefin alloys based on polypropylene / ethylene-propylene-diene elastomers the elastomeric component by additives such as dodecyl (DE 26 20 820), sulfur (EP 336 780) or tetrabutylthiuram (EP 376 213) vulcanize. However, these formulations have the disadvantage of a strong Discoloration, so that semi-finished products and moldings made from these materials only black can be colored to be used.
0007It is also known in the preparation of thermoplastic elastomers by Compounding of polypropylene with ethylene-propylene-diene elastomers thermally decomposing radical such as azo compounds (US 50 79 283), or Peroxides (US 54 59 201; Kim, Y., Polymer Engn.Sci 35 (1995) 20, 1592-1594;. BE 841 507) or thermally decomposing radical in combination with divinyl as divinyl (J 88067802) or divinylbenzene (US 49 12 148, EP 311 451) to use.
0008In formulations of polypropylenes and elastomeric ethylene-hexene copolymers is the modification of the blends by electron irradiation are known (JP 96 301 927).
0009Thermoplastic elastomers are also useful as ternary blends of polyethylenes, Polypropylenes and ethylene-propylene-diene elastomers known [EP 699,522; Kim, J. Applied Polymer Sci. 60 (1996), 2199-2206].
0010Through these formulations, thermoplastic elastomers of good dyeability achieving and high elasticity, are demands for high strength However, not satisfied.
0011Impact-resistant polymer blends of polyolefins and elastomers are known. Known Impact-resistance for polypropylene are amorphous ethylene-propylene-diene elastomers [Michael, W., Kunststoffberater (1990) 3, 38-43; Kloos, F., Applied Makromolekulare Chemie 185/186 (1991), 97-108], ethylene-propylene elastomers [Kim, B., J. Applied Polymer Sci. 60 (1996), 2207-2218, J. Applied Polymer Sci. 60 (1996) 1391-1403], also in the form of reactor blends of polypropylene and Ethylene-propylene rubber [Kresge, E., Macromol.Symp. 53 (1992), 173-189, Schwager, H., Plastics 82 (1992) 6, 499-501], butadiene-α-methyl styrene rubber [Natov, M., plastic u. Rubber 38 (1991) 3, 85-88], styrene-butadiene block copolymers [Karger-Kocsis, J., Plastics 74 (1984), 104-107], elastomeric copolymers of ethylene and higher C<sub>4</sub>-C<sub>8th</sub>Olefins [Yu, T., ANTEC 94, 2439-2441; Meiske, L., ANTEC 96, 2001-2005] as well as elastomeric ethylene-vinyl acetate copolymers [Gupta, A., J. Applied Polymer Sci. 45 (1992), 1303-1312] in proportions of 10 to 35% by weight based on the polyolefin.
0012The disadvantage of this non-modified blends is the limited compatibility the impact-resistance.
0013The object of the present invention was the development of thermoplastic Elastomers, at the same time a high strength, elasticity and good have colorability and their derivative extremely tough polymer blends.
0014Surprisingly, it was found that by compounding of propylene homopolymer and / or propylene copolymers with elastomers with the addition of volatile C<sub>4</sub>-C<sub>7</sub>Dienes, optionally thermally decomposing in the presence Free radicals, thermoplastic elastomers with a very finely dispersed distribution the elastomeric component are formed in the polyolefin component, these Meet requirements.
0015The object of the invention was high by thermoplastic elastomers Strength, elasticity and good colorability, whose embedded elastomer particles an average particle diameter of 0.05 to 5 microns, preferably 0.1 to 1 micron, have, of propylene homopolymers and / or propylene copolymers, elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or terpolymers, polyfunctional unsaturated monomers, optionally thermally decomposing radical formers and auxiliary materials, dissolved, whereby the thermoplastic elastomers prepared by a process have been, in which mixtures of 20 to 80 mass%, preferably 40 to 60 Mass%, propylene homopolymers and / or propylene copolymers, 80 to 20 Mass%, preferably 60 to 40% by weight, elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or terpolymers, 0.10 to 4.0 mass%, preferably 0.2 to 1.5 mass%, based on the Sum of the polymers used, volatile C<sub>4</sub>-C<sub>7</sub>Dienes and from 0 to 4.0 Mass%, preferably 0.2 to 1.5 mass%, based on the sum of the inserted Polymers, acyl peroxides, alkyl peroxides, hydroperoxides, Perorycarbonaten, Peresters, ketone peroxides, Peroxiketalen and / or azo compounds as thermally decomposing radical have been implemented in the melt, and said before and / or after the reaction of 0.01 to 40 mass%, based on the sum of the Polymers used, excipients may be added.
0016The fine dispersion of the elastomeric component in the polyolefin component lies with the inventive thermoplastic elastomers in the micron range, can be determined from transmission electron micrographs.
0017The propylene homopolymers are preferred in the invention largely isotactic Propylene homopolymers, in particular isotactic propylene homopolymers, the using Ziegler-Natta catalysts or metallocene catalysts have been prepared. Particularly suitable are propylene homopolymers with bimodal molecular weight distribution, molecular weight average M<sub>w</sub> 500000-1500000 g / mol, number average molar weights M<sub>n</sub> 25000-100000 g / mol and M<sub>w</sub> / M<sub>n</sub> Values from 5 to 60, which produced in a reactor cascade were.
0018Preference is given for the inventive thermoplastic elastomers also Copolymers of propylene and α-olefins with 2 or 4 to 18 carbon atoms, in particular statistical propylene copolymers, propylene block copolymers and / or random Propylene block copolymers.
0019A preferred variant as propylene homopolymers and / or propylene copolymers for the inventive thermoplastic elastomers also form Mixtures of 50 to 98% by mass of largely isotactic propylene homopolymer and / or copolymers of propylene and α-olefins with 2 or 4 to 18 carbon atoms and 2 to 50% by weight of non-isotactic propylene homopolymers, largely amorphous propylene homopolymers and / or propylene copolymers and / or non-linear modified propylene homopolymer and / or propylene copolymers.
0020The non-isotactic propylene homopolymers, optionally in the invention may contain thermoplastic elastomers are elastomeric high molecular weight propylene homopolymer with a melting point of 145 to 1650 ° C a melt viscosity of 200000-2000000 cps at 190 ° C, a Heat of crystallization 4 to 10 cal / g and a soluble portion in diethyl ether from 35 mass% to 55 mass%. Examples of these non-isotactic propylene homopolymers are the products described in EP 475 307 or EP 475 308.
0021The substantially amorphous propylene Nomopolymere and / or propylene copolymers, optionally in the thermoplastic elastomers according to the invention may be present, have a proportion of crystalline polypropylene or crystalline propylene copolymer with 10% by weight, a melting enthalpy of less than 40 J / g and a melt index of 0.1 to 100 g / 10 min at 230 ° C / 2.16 kg, wherein the largely amorphous polypropylene is a homopolymer of propylene and / or a Copolymer of propylene of at least 80 mol% propylene and at most 20 Mol% of one or more α-olefins of the formula CH<sub>2</sub>= CHR, as at R is a linear or branched alkyl radical having 2 to 8 carbon atoms. These amorphous propylene homopolymers and / or propylene copolymers are particularly Stereo block - propylene homopolymers and / or propylene copolymers for example, using highly active, metal-Supported Ziegler-Natta catalysts [Collette, J., Macromolecules 22 (1989), 3851-3858; DE 2830160] or soluble Ziegler-Natta catalysts [de Candia, F., Makromol. Chem. 189 (1988), 815-821], optionally with subsequent reactive modification (EP 636863) and / or degradation (EP 640 850), can be produced.
0022The non-linear modified propylene homopolymers and / or propylene copolymers, optionally in the thermoplastic elastomers according to the invention may be present, have melt indices of 0.1 to 30 g / 10 min at 230 ° C / 2, 16 kg and a quotient of the intrinsic viscosity of the non-linear modified propylene homopolymers and / or propylene copolymers and the Intrinsic viscosity of the linear propylene homopolymer and / or propylene copolymers with largely the same weight average molecular weight from .20 to .99. These nonlinear modified propylene homopolymers and / or propylene copolymers are produced by radical coupling reactions (modification of propylene homopolymer and / or propylene copolymers with ionizing radiation or thermally decomposing radical formers, optionally with the addition of more functionally ethylenically unsaturated monomers) or by polymer-analogous reactions functionalized propylene homopolymers and / or propylene copolymers produced.
0023Examples of these produced by radical coupling reactions nonlinear modified propylene homopolymers and / or propylene copolymers are in particular: <ul><li>modified propylene homopolymers and / or propylene copolymers by reacting of propylene homopolymers and / or propylene copolymers with Bismaleimidoverbindungen in the melt (EP 574 801; EP 574 804),</li><li>modified propylene homopolymers and / or propylene copolymers By J h Treatment of propylene homopolymers and / or propylene copolymers with ionizing radiation in the solid phase (EP 190889; EP 634 454),</li><li>modified propylene homopolymers and / or propylene copolymers by Treatment of propylene homopolymers and / or propylene copolymers with peroxides in solid phase (EP 384431; DE 4,340,194) or in the melt (EP 142 724)</li><li>modified propylene homopolymers and / or propylene copolymers by treatment of propylene homopolymers and / or propylene copolymers with multifunctional ethylenically unsaturated monomers under the action of ionizing Radiation (EP 678 527),</li><li>modified propylene homopolymers and / or propylene copolymers by treatment of propylene homopolymers and / or propylene copolymers with multifunctional ethylenically unsaturated monomers in the presence of peroxides in the Melt (EP 688 817; EP 450 342).</li></ul>
0024Furthermore, as non-linear modified propylene homopolymers and / or Propylene copolymers, optionally in the thermoplastic invention Elastomers can be contained, by polymer-analogous reaction functionalized propylene homopolymers and / or propylene copolymers, preferably containing of acid and / or acid anhydride propylene homopolymer and / or propylene copolymers with polyfunctional compounds opposite reactivity preferably with C<sub>2-</sub> -C<sub>16</sub> - Diamines and / or C<sub>2-</sub> to C<sub>16</sub> - Diols produced non-linear modified propylene homopolymers and / or Propylene copolymers are preferred.
0025Examples of those produced by polymer-analogous reactions nonlinear modified Propylene homopolymers and / or propylene copolymers are in particular:<ul><li>modified propylene homopolymers and / or propylene copolymers by reacting of maleic anhydride-grafted propylene homopolymer and / or propylene copolymers with diamines or polyglycols (EP 177401; JP 08176365)</li><li>modified propylene homopolymers and / or propylene copolymers by reacting containing of acid or acid anhydride propylene homopolymer and / or propylene copolymers having epoxy, hydroxyl or amino groups, Containing polymers (EP 307684; EP 299 486).</li></ul>
0026A further preferred variant for non-linear modified propylene homopolymers and / or propylene copolymers, which, if appropriate, according to the invention in the may contain thermoplastic elastomers are non-linear modified propylene homopolymers and / or propylene copolymers by hydrolytic condensation of propylene homopolymers and / or propylene copolymers, containing hydrolysable silane groups can be manufactured. Examples are the products described in DE 4107635 or US 47 14 716th
0027Particularly advantageously provide the propylene homopolymers and / or propylene copolymers of the thermoplastic elastomers according to the invention a multi-component mixture from 'largely isotactic propylene homopolymers and / or Copolymers of propylene and ethylene or α-olefins with 4 to 18 C atoms, non-isotactic propylene homopolymers, substantially amorphous propylene homopolymer and / or propylene copolymers as well as non-linear modified Propylene homopolymers and / or propylene copolymers are.
0028By use of special multi-component mixtures of the polypropylenes described and propylene copolymers are specific property combinations of the inventive thermoplastic elastomers achievable.
0029are preferred as propylene copolymers in the thermoplastic invention Elastomers also blends of<sl><li>a) 60 to 98% by weight of a crystalline copolymer of 85 to 99.5% Propylene and 15 to 0.5 wt% of ethylene and / or an α-olefin of the general formula CH<sub>2</sub>= CHR, wherein R is a linear or branched alkyl radical having 2 to 8 Carbon atoms, and</li><li>b) 2 to 40% by weight of an elastic copolymer of 20 to 70 mass% of ethylene and 80 to 30% propylene and / or an α-olefin of the general formula CH<sub>2</sub>= CHR, wherein R is a linear or branched alkyl radical having 2 to 8 carbon atoms is.</li></sl>
0030These polyolefin blends of crystalline copolymers and elastic copolymers for example, the polymer mixtures described in EP 400 333 or EP 472 946.
0031Contained in the thermoplastic elastomers of the invention elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or terpolymers are preferably ethylene-propylene elastomers, Ethylene-propylene-diene elastomers, ethylene-vinyl acetate Copolyere, chlorosulfonated polyethylene, ethylene-styrene elastomers, elastomeric copolymers of ethylene and C<sub>4</sub>-C<sub>8th</sub>Olefins - in particular, elastomeric ethylene-butene copolymers, Ethylene-hexene copolymers and / or ethylene-octene copolymers -, elastomeric butadiene-styrene co- and / or terpolymers - in particular styrene-ethylene-butadiene-styrene block copolymers -, And / or styrene-isoprene co- and / or terpolymers.
0032The with the mixtures of propylene homopolymers and / or propylene copolymers and elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or terpolymers unreacted volatile C<sub>4</sub>-C<sub>7</sub>Dienes are preferably butadiene, chloroprene, cyclohexadiene, Cyclopentadiene, dimethylbutadiene, heptadiene, hexadiene, isoprene and / or 1,4-pentadiene.
0033Contained in the thermoplastic elastomers of the invention Auxiliaries are preferably 0.01 to 2.5 wt% stabilizers, 0.05 to 2.0 mass% Nucleating, 0.1 to 1% by weight of antistats, 0.2 to 3% by weight pigments, 3 to 40 mass% fillers, 1 to 20 mass% flame retardant, 3 to 40 mass% Reinforcing materials and / or 0.01 to 5 mass%, each based on the sum of used polymers, processing aids.
0034The stabilizers contained in the thermoplastic elastomers of the invention preferably are mixtures of 0.01 to 0.6% phenolic antioxidants, 0.01 to 0.6% 3-arylbenzofuranones, 0.01 to 0.6% Processing stabilizers based on phosphites, 0.01 to 0.6% high temperature stabilizers based on disulfides and thioethers and / or 0.01 to 0.8 mass% sterically hindered amines (HALS).
0035Suitable phenolic antioxidants are 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-isoamylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2-tert-butyl-4,6-diisopropylphenol, 2,6-dicyclopentyl-4-methylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, 2-tert-butyl-4,6-dioctadecylphenol, 2,5-di-tert-butylhydroquinone, 2,6-di-tert-butyl-4,4-hexadecyloxyphenol, 2,2'-methylene-bis (6-tert.butyl-4-methylphenol), 4,4'-thio-bis (6-tert-butyl-2-methylphenol), 3 (3,5-di-tert-butyl - 4 - hydroxyphenyl) propionate, 1,3,5 - benzene 2,4,6-tris (3 ', 5'DI-tert-butyl-4-hydroxybenzyl) - trimethyl and / or pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl)] propionate.
0036As benzofuranone derivative is in particular 5,7-di-tert-butyl-3- (3,4-di-methylphenyl) -3H-benzofuran-2-one suitable.
0037As HALS compounds, bis-2,2,6,6-tetramethyl-4-piperidyl sebacate and / or Poly - ([1,1,3,3, -tetramethylbutyl) imino] - triazine 1,3,5 - 2,4,diyl)[2,2,6,6-tetramethylpiperidyl)-amino]-hexamethylen-4-(2,2,6,6-tetra-methyl)piperidyl)-imino] especially suitable.
0038The optionally in the thermoplastic elastomers according to the invention Nucleating contained are preferably α-nucleating agents such as talc, phosphoric acid, sodium benzoate or the sodium salt of methylene-bis (2,4-di-Bu-butylphenol) or β-nucleating agents such as adipic acid, adipic dianilide, Chinacridinonchinon and / or N, N'-dicyclododecyl-4,4-biphenyldicarboxamide.
0039The optionally in the thermoplastic elastomers according to the invention Fillers contained are preferably Al<sub>2</sub>O<sub>3,</sub> Al (OH)<sub>3,</sub> Barium sulfate, calcium carbonate, Glass beads, wood flour, siliceous earth, hollow microbeads, carbon black, talc and / or Wollastonite.
0040The optionally in the thermoplastic elastomers according to the invention Reinforcing materials contained are preferred aramid fibers, cellulose fibers, flax, Jute, kenaf, glass fibers, glass mats, microfibers of liquid crystalline polymers and / or polytetrafluoroethylene fibers.
0041As processing aids can be used in the thermoplastic invention be included elastomeric calcium stearate, magnesium stearate and / or waxes.
0042According to the invention further high-impact polymer blends consisting of<sl><li>a) 5 to 95% by mass, preferably 10 to 50 wt%, of thermoplastic Elastomers according to one or more of claims 1 to 5 and </li><li>b) 95 to 5% by weight, preferably 90 to 50 mass%, to<sl><li>b1) unmodified polyolefins, preferably substantially isotactic at Propylene homopolymers, copolymers of propylene and ethylene or α-olefins with 4 to 18 C-atoms, in particular statistical propylene copolymers, propylene block copolymers and / or statistical propylene block copolymers; non-isotactic Propylene homopolymers, substantially amorphous propylene homopolymer and / or propylene copolymers, non-linear propylene homopolymer and / or propylene copolymers, and / or</li></sl></li><li>b2) blends of<sl><li>b2.1) from 60 to 98 mass% of a crystalline copolymer of 85 to 99.5% Propylene and 15 to 0.5 wt% of ethylene and / or an α-olefin of the general formula CH<sub>2</sub>= CHR, wherein R is a linear or branched alkyl radical having 2 to 8 Carbon atoms,</li><li>b2.2) from 2 to 40 mass% of an elastic copolymer of 20 to 70 mass% Ethylene and 80 to 30 mass% of propylene and / or an α-olefin of the general formula CH<sub>2</sub>= CHR, wherein R is a linear or branched alkyl radical having 2 to 8 Carbon atoms, consist.</li></sl></li></sl>
0043The unmodified polyolefin in the high impact of the invention Polymer blends are preferably made of those propylene homopolymers and / or propylene copolymers, which are also part of the thermoplastic Elastomers.
0044The thermoplastic elastomers of high strength, elasticity and good colorability, whose embedded elastomer particles have an average particle diameter from 0.05 to 5 .mu.m, preferably 0.1 to 1 .mu.m, have, of the propylene homopolymer and / or propylene copolymers, elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or terpolymers, more functional unsaturated monomers, optionally thermally decomposing radical formers and auxiliaries, are according to the invention for a manufactured method in which mixtures of 20 to 80 mass%, preferably 40 to 60 mass%, propylene homopolymers and / or propylene copolymers, 80 to 20 Mass%, preferably 60 to 40% by weight, elastomeric C<sub>2</sub>-C<sub>8th</sub>-Olefin co- and / or - Terpolymers, 0.10 to 4.0 mass%, preferably 0.2 to 1.5 mass%, based on the sum of the polymers used, volatile C<sub>4</sub>-C<sub>7</sub>Dienes and from 0 to 4.0 Mass%, preferably 0.2 to 1.5 mass%, based on the sum of the inserted Polymers, acyl peroxides, alkyl peroxides, hydroperoxides, peroxycarbonates, peresters, Ketone peroxides, Peroxiketalen and / or azo compounds as thermally decomposing radical in continuous kneaders in the melt at melt temperatures from 150 to 300 ° C, preferably 185-245 ° C, and residence times from 1 min to 35 min, preferably from 2.5 to 6 min, are reacted, in which before and / or after the reaction, from 0.01 to 40 mass%, based on the sum of the Polymers used, excipients may be added.
0045As thermally decomposing radical are in the inventive A process for preparing thermoplastic elastomers acyl peroxides, alkyl peroxides, Hydroperoxides, peroxy, perester, ketone peroxides, peroxy and / or Azo compounds.
0046Examples of the acyl peroxides used are benzoyl peroxide, chlorobenzoyl, Methoxybenzoyl, methylbenzoyl, Nitrobenzoylperoxid, Acetylbenzoylperoxid, Lauroyl or Succinoylperoxid.
0047Examples of the alkyl peroxides used are allyl-butyl peroxide, 2,2-bis (tert.butylperoxybutan), 1,1-bis (tert.butylperoxi) -3,3,5-trimethylcyclohexane, diisopropylaminomethyl-tert.amylperoxid, Dimethylaminomethyl tert.amylperoxid, diethyl aminomethyl-butyl peroxide, Dimethylaminomethyl-butyl peroxide, 1,1-di- (tert. amylperoxi) cyclohexane, tert. Amyl, tert.Butylcumylperoxid, tert-butyl peroxide and 1-hydroxybutyl n-butyl peroxide.
0048Examples of the hydroperoxides used are decalin hydroperoxide and tetralin.
0049Examples of peresters and peroxycarbonates employed are butyl peracetate, Cumylperacetat, Cumylperpropionat, Cycloherylperacetat, di-tert. butylperadipat, di-tert.butylperazelat, Di-tert.butylperglutarat, di-tert.butylperphthalat, di-tert.butylpersebazat, 4-Nitrocumylperpropionat, 1-Phenylethylperbenzoat, Phenylethylnitroperbenzoat, tert-bicyclo- (2,2,1) heptanpercarboxylat, tert-butyl-4-carbomethoxyperbutyrat, tert. Butylcyclobutanpercarboxylat, tert. Butylcyclohexylperoxycarboxylat, tert. Butylcyclopentylpercarboxylat, tert. Butylcyclopropanpercarboxylat, tert.Butyldimethylpercinnamat, tert-butyl-2- (2,2-diphenylvinyl) perbenzoate, tert-butyl-4-methoxyperbenzoat, tert. Perbenzoate, tert. Butylcarboxicyclohexan, tert. Butylpernaphthoat, tert.Butylperoxiisopropylcarbonat, t-butylpertoluate, tert. Butyl-1-phenylcyclopropylpercarboxylat, tert. Butyl-2-propylperpenten-2-oate, tert-butyl-1-methylcypropylpercarboxylat, tert-butyl-4-nitrophenylperacetat, tert.Butylnitrophenylperoxycarbamat, tert. Butyl-N-succinimidopercarboxylat, tert. Percrotonate, tert. Butylpermaleinsäure, tert.Butylpermethacrylat, tert.Butylperoctoat, tert.Butylperoxyisopropylcarbonat, tert. Perisobutyrate, tert. Butylperacrylat and tert. Butylperpropionat.
0050Examples of the ketone peroxides used are methyl ethyl ketone and Diethylketonhydroperoxid.
0051Examples of the peroxy used are 1.1-di-t-butylperoxy-3,3,5-trimethyl and 1.1-di-t-butylperoxy-3,3,5-dimethylethylcyclohexan.
0052Examples of the azo compounds used are 2-cyano-2-propylazoformamid, 2,2'-azo-bis-2-methylpropionitrile, 1,1'-azo-bis-cyclopentannitril, 1,1'-Azo.bis-cyclohexanenitrile, 2,2'-azo-biscyclohexylpropionitril; 2,2'-azo-bis-methyl-2-methylpropionate and azo-bis (N, N'-diethylenisobutyramidin).
0053As continuous kneaders are in the process of the invention for Preparation of thermoplastic elastomers, in particular twin-screw extruder, Screw extruder a high mixing action or a cascade of coupled Kneading chambers suitable.
0054A preferred variant for the dosage of volatile C<sub>4</sub>-C<sub>7</sub>-dienes And / or Acyl, alkyl, hydroperoxides, peroxy, perester, ketone peroxides, Peroxy and / or azo compounds as thermally decomposing free-radical consists in the method for producing thermoplastic elastomers according to the invention is that the dosage in the continuous kneader into the melt the mixture of propylene homopolymers and / or propylene copolymers, elastomeric C<sub>2</sub>-C<sub>8th</sub>Olefin - co- and / or terpolymers and, where appropriate, excipients, volatile C<sub>4</sub>-C<sub>7</sub>Dienes and / or thermally decomposing radical formers takes place.
0055A preferred variant for the preparation of mixtures of propylene homopolymer and / or propylene copolymers, elastomeric C<sub>2</sub>-C<sub>8th</sub>Olefin -CO- and / or Terpolymers and optionally auxiliaries volatile C<sub>4</sub>-C<sub>7</sub>-Serve and / or acyl peroxides, alkyl peroxides, hydroperoxides and / or peresters as thermally decomposing radical formers in the process for preparing thermoplastic Elastomers lies in the present invention also in the fact that the mixture the propylene homopolymers and / or propylene copolymers, elastomeric C<sub>2</sub>-C<sub>8th</sub>Olefin copolymers and / or terpolymers and optionally auxiliaries with the volatile C<sub>4</sub>-C<sub>7</sub>Dienes and / or thermally decomposing radical formers by premix and / or by sorption from the gas phase in continuous flow mixers before metering of the mixtures into the continuous kneader is carried out.
0056must When premix or sorption of thermal decomposing radical formers Such acyl peroxides, alkyl peroxides, hydroperoxides, Perorycarbonate, peresters, Ketone peroxides, peroxyketals and / or azo compounds are used which when Melting point or softening point of the propylene homopolymers used and / or propylene copolymers have a half-life of about 40 s to form a exclude premature decomposition before homogenization of the mixture.
0057The inventive thermoplastic elastomers, and mixtures of thermoplastic elastomers with conventional polyolefins are preferred for the Use in the automotive industry, especially for tubing connectors, air intake, Pipe joints and sealing profiles, in the household appliances industry, in particular for connectors and sealing profiles, in the construction sector, in particular for Window seals, sealing profiles for partition walls, expansion joints and in Installation area and in medical technology, in particular for hoses, Seals, syringes and pistons capable.
0058It is particularly advantageous that the thermoplastic elastomers due to the opaque coloring for producing colored products in any colors can be colored.
0059The invention is illustrated by the following examples:
example 1
0060In a Werner & Pfleiderer twin-screw extruder ZSK 54, L / D = 36, with 2 Feeders, metering of liquid media in Zone 4, vacuum degassing and underwater, temperature profile 80/170/220 // 180/220/220/210/190 ° C, is a propylene-ethylene copolymer (ethylene content 4.2% by weight, melt index 8 g / 10 min at 230 ° C / 2.16 kp) at 8.0 kg / hr. and an ethylene-octene copolymer (Octene content 24% by weight, melt index 5 g / 10 min at 190 ° C kp / 2.16) 12.0 kg / hr. metered. The mixture is melted in an extruder and in the zone 4 of the extruder, a mixture of 32% by weight of isoprene, 18% by weight of 2,5-dimethyl-2,5-di (tert.butylperoxyhexan) and 50 mass% of acetone with 0.6 kg / hr. metered. The Reaction mixture is subjected to vacuum degassing, discharged and granulated.
0061The resulting opaque thermoplastic elastomer has the following characteristics: Tensile strength [N / mm<sup>2</sup>] At break [%]: 7.5 / 200; 9/400; 13.5 / 600; Tension: 25%
example 2
0062In a Werner & Pfleiderer twin screw extruder of Example 1, a Propylene-ethylene random copolymer according to Example 1 with 10.0 kg / hr. and an ethylene-octene copolymer according to Example 1 with 10.0 kg / hr. metered. The mixture is in Extruder and melted in the zone 4 of the extruder, a mixture of 40 Mass% of butadiene, 10% by weight of dicumyl peroxide and 50% by weight of acetone with 0.65 kg / hr. metered. The reaction mixture is subjected to vacuum degassing, discharged and granulated.
0063The resulting opaque thermoplastic elastomer has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 8.2 / 200; 10.2 / 400; 15.5 / 600;</li><li>Tension set: 30%</li></sl>
0064As a comparison has the without the addition of the mixture of butadiene, dicumylperoxide thermoplastic elastomer produced and acetone Alike a tensile strength of 9 N / mm<sup>2</sup> with an elongation at break of 42%.
0065A manufactured under the same experimental conditions without the addition of butadiene thermoplastic elastomer has the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 7.3 / 200; 8.1 / 400; 10.8 / 600;</li><li>Tension set: 29%.</li></sl>
example 3
0066In a Werner & Pfleiderer twin-screw extruder of Example 1, temperature profile 80/170/230 // 190/230/230/220/190 ° C, a polypropylene compound, which is prepared from 99.3% by weight of a reactor blend (ethylene content 33 mol%, melt index 8 g / 10 min at 230 ° C / 2.16 kg), consisting of a crystalline propylene-ethylene copolymer and an elastic ethylene-propylene copolymer, 0.35% by mass of 2-tert-butyl-4,6-diisopropylphenol, 0.15 mass% of bis-2,2,6,6 - tetramethyl-4-piperidyl sebacate and 0.2 mass% calcium palmitate with 8.0 kg / hr. and an ethylene-octene copolymer by Example 1 12 kg / h. metered. The mixture is melted in an extruder and in the zone 4 of the extruder, a mixture of 15% by weight of butadiene, 10% by mass Dimethylbutadiene, 15 mass% 1-Phenylethylperbenzoat, 10 mass% dicumylperoxide and 50 mass% of acetone with 0.55 kg / h. metered. The reaction mixture is subjected to vacuum degassing, discharged and granulated.
0067The resulting opaque thermoplastic elastomer has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 6.5 / 200; 8.8 / 400; 12.5 / 600;</li><li>Tension: 16.25%</li></sl>
0068As a comparison has the without the addition of the mixture of diene monomer, thermally produced decomposing radical formers and acetone Alike thermoplastic elastomer the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 2.8 / 200; 3.0 / 400; 3.6 / 600;</li><li>Tension: 23.8%</li></sl>
0069A manufactured under the same experimental conditions without the addition of diene monomer thermoplastic elastomer has the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 5.0 / 200; 6.5 / 400; 7.7 / 600;</li><li>Tension: 21.2%.</li></sl>
example 4
0070In a Werner & Pfleiderer twin screw extruder of Example 1 with 3 Feeders, temperature profile 80/175/220 // 190/230/230/220/190 ° C, is a Polypropylene Compound of Example 3 7.0 kg / hr., A non-linear modified Propylene homopolymer (melt index 1.9 g / 10 min at 230 ° C kp / 2.16, butadiene 0.9 mass%, intrinsic viscosity of the non-linear modified propylene homopolymer / intrinsic viscosity the unmodified propylene homopolymer 0.82) with 1.2 kg / hr. and an ethylene-octene copolymer of Example 1 with 12 kg / h. metered. The mixture is melted in an extruder and in the zone 4 of the extruder a mixture of 15% by weight of isoprene, 10% by weight of cyclopentadiene, 15 mass% t-butylpertoluate, 10 mass% and 50 mass% tert.Butylcumylperoxid acetone 0.35 kg / hr. metered. The reaction mixture is subjected to vacuum degassing, discharged and granulated.
0071The resulting opaque thermoplastic elastomer has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 6.9 / 200; 8.3 / 400; 11.2 / 600;</li><li>Tension: 15.25%</li></sl>
0072As a comparison has the without the addition of the mixture of diene monomer, thermally decomposing radical formers and acetone Alike thermoplastic elastomer produced following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 3.3 / 200; 3.5 / 400; 3.6 / 600;</li><li>Tension: 23.8%</li></sl>
0073A manufactured under the same experimental conditions without the addition of diene monomer thermoplastic elastomer has the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 4.7 / 200; 5.9 / 400; 6.8 / 600;</li><li>Tension: 22.2%.</li></sl>
example 5
0074In a Werner & Pfleiderer twin screw extruder of Example 1 with 2 Feeders, temperature profile 80/175/220 // 190/225/230/220/190 ° C, is a Polypropylene Compound of Example 3 with 8.0 kg / hr. and a talc-powdered Ethylene-propylene-ethylidene norbornene terpolymer (melt index 0.5 g / 10 min at 230 ° C / 2.16 kp, propylene content 24 mass%, 2.5 double bonds per 1000 carbon atoms) 12 kg / hr. metered. The mixture is melted in the extruder and in the Zone 4 of the extruder, a mixture of 10% by weight of butadiene, 5% by weight hexadiene, 5 mass% Diethylketonhydroperoxid, 25 mass% of dicumyl peroxide and 55 mass% Acetone 0.62 kg / hr. metered. The reaction mixture is subjected to vacuum degassing subjected, discharged and granulated.
0075The resulting opaque thermoplastic elastomer has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 8.5 / 200; 13.2 / 400;</li><li>Tension: 18.7%</li></sl>
0076As a comparison has the without the addition of the mixture of diene monomer, thermally decomposing radical formers and acetone Alike thermoplastic elastomer produced following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 3.1 / 200; 3.8 / 400;</li><li>Tension: 25.0%</li></sl>
0077A manufactured under the same experimental conditions without the addition of diene monomer thermoplastic elastomer has the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 5.5 / 200; 7.4 / 400;</li><li>Tension: 18.5%.</li></sl>
example 6
0078In a Werner & Pfleiderer twin screw extruder of Example 1 with 2 Feeders, temperature profile 80/175/220 // 190/225/230/220/190 ° C, is a Polypropylene Compound according to Example 3 with 10.0 kg / hr. and a talc-powdered Ethylene-propylene-ethylidenenorbornene terpolymer according to Example 5 with 10.0 kg / hr. metered. The mixture is melted in an extruder and in the zone 4 Extruder a mixture of 20 mass% isoprene, 5% by weight hexadiene, 5 mass% Decalin hydroperoxide, 20% by weight of dicumyl peroxide and 50% by weight of acetone with 0.60 kg / hr. metered. The reaction mixture is subjected to vacuum degassing, discharged and granulated.
0079The resulting opaque thermoplastic elastomer has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 8.0 / 200; 12.5 / 400;</li><li>Tension: 22.5%</li></sl>
0080As a comparison has the without the addition of the mixture of diene monomer, thermally produced decomposing radical formers and acetone Alike thermoplastic elastomer the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 4.8 / 200; 7.7 / 400;</li><li>Tension: 25.0%</li></sl>
0081A manufactured under the same experimental conditions without the addition of diene monomer thermoplastic elastomer has the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 6.1 / 200; 8.5 / 400;</li><li>Tension: 26.4%.</li></sl>
example 7
0082In a continuous flow mixer is a mixture of 40 mass% a powdered ethylene-propylene copolymer (ethylene content 4.2% by mass, Melt index 8 g / 10 min at 230 ° C / 2, 16 kg) and 60 mass% of a fine, talc-powdered Ethylene propylene ethylidenenorbornene terpolymer (melt index 0.6 g / 10 min at 230 ° C / 2.16 kp, propylene content 26 mass%, 3 double bonds per 1000 C-atoms), 2% by weight based on the polymer mixture, a 25% solution of 2,5-dimethyl-2,5-di (tert.butylperoxyhexan) reeled in acetone. subsequently is loaded with thermally decomposing free radical transferred polymer mixture into a continuous screw mixer and at a residence time of 12 min at 45 ° C in contact with a recycle gas consisting of 28 Vol.% Butadiene and 72 vol.% Nitrogen is, with 1.1 wt.% Of butadiene, based on the polymer mixture, sorptiv loaded. After metering in a Berstorff twin screw extruder Z 25 is the thermally decomposing free radical and diene loaded polymer blend at 250 U / min, a flow rate of 5 kg / h and a temperature profile of 25/165/160/160/175/190/230/235/240/240 ° C melted, homogenized, discharged and granulated.
0083The resulting opaque thermoplastic elastomer has the following characteristics: Melt index: 0.06 g / 10 min at 230 ° C / 2.16 kp<sl><li>Heat of fusion: 63 J / g Crystallization temperature: 378 K</li><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 7.5 / 200, 11.2 / 400, 25.1 / 600</li><li>Tension: 21%</li></sl>
0084As a comparison has the without pretreatment with thermally decomposing free radical and the produced Alike polymer mixture following Characteristics:<sl><li>Melt index: 0.86 g / 10 min at 230 ° C / 2.16 kp</li><li>Heat of fusion: 47 J / g Crystallization temperature: 372 K </li><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 3.1 / 200, 4.2 / 400, 5.4 / 600</li><li>Tension: 21%</li></sl>
0085The Alike under premix with thermally decomposing free radical, but with no added Diensorption in continuous screw mixer Polymer mixture has the following characteristics compared:<sl><li>Melt index: 0.15 g / 10 min at 230 ° C / 2.16 kp</li><li>Heat of fusion: 68 J / g Crystallization temperature: 373 K</li><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 7.9 / 200, 9.8 / 400, 14.9 / 600</li><li>Tension: 21%</li></sl>
example 8
0086In a continuous flow mixer is a mixture of 40 mass% a powdered ethylene-propylene copolymer (ethylene content 4.2% by mass, Melt index 8 g / 10 min at 230 ° C / 2.16 kp) and 60 mass% of a fine, talc-powdered Ethylene propylene ethylidenenorbornene terpolymer (melt index 0.6 g / 10 min at 230 ° C / 2.16 kp, propylene content 28 mass%, 3 double bonds per 1000 C-atoms), 2% by weight based on the polymer mixture, a 25% solution of 1,1-di (t-butylperoxy) -3,3,5-trimethylcyclohexane reeled in acetone. subsequently is loaded with thermally decomposing free radical polymer blend transferred to a continuous screw mixer and at a Residence time of 8 min at 45 ° C in contact with a recycle gas consisting of 32 vol.% Isoprene and 68 vol.% Nitrogen is, with 0.7 wt.% Isoprene, based on the Polymer blend sorptiv loaded. After metering in a Berstorff twin screw extruder Z 25 is the thermally decomposing free radical and diene loaded polymer blend at 250 U / min, at a flow rate of 5.2 kg / h and a temperature profile of 25/165/160/160/175/185/225/230/240/235 ° C molten, homogenized, discharged and granulated.
0087The resulting opaque thermoplastic elastomer has the following characteristics: <sl><li>Melt index: 0.08 g / 10 min at 230 ° C / 2.16 kp</li><li>Heat of fusion: 64 J / g Crystallization temperature: 376 K</li><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 6.9 / 200, 11.0 / 400, 20.7 / 600</li><li>Tension: 25%</li></sl>
example 9
0088In an extruder according to Example 7, a polymer mixture of 70 mass% of a Polypropylene homopolymer (melt index 1.9 g / 10 min at 230 ° C kp / 2.16) and 30 Mass% of the thermoplastic elastomer of Example 7 at 250 U / min, a Throughput of 5 kg / h and a temperature profile of 25/215/215/215/215/215/215/220 ° C melted, homogenized, discharged and granulated.
0089The resultant impact-modified polypropylene has the following characteristics:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 20.3 / 200, 21.0 / 400, 22.8 / 600</li><li>Notched Charpy impact strength [kJ / m<sup>2</sup>] At [° C]: 43/20, 4.8 / -20, 2.4 / -40</li></sl>
0090As a comparison has a manufactured under the same homogenization conditions impact-modified polypropylene, consisting of 70 mass% of the polypropylene homopolymer and 30% by weight of the corresponding non-modified propylene polymer / elastomer mixture was prepared according to Example 7, the following properties:<sl><li>Tensile strength [N / mm<sup>2</sup>] At break [%]: 19.4 / 200, 20.0 / 400, 22.7 / 600</li><li>Notched Charpy impact strength [kJ / m<sup>2</sup>] At [° C]: 10.5 / 20, 3.2 / -20, 2.0 / -40</li></sl>
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| Document | Relation | Office | Cited during |
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| EP1153949A1 | Cited by | European Patent Office (EPO) | Search report |
| EP0920876A2 | Cited by | European Patent Office (EPO) | Search report |
| EP0920876A3 | Cited by | European Patent Office (EPO) | Search report |
| EP1153949A4 | Cited by | European Patent Office (EPO) | Search report |
| EP0688817A1 | Cites | European Patent Office (EPO) | Search report |
| FR1208447A | Cites | France | Search report |
| DE19724317C1 | Cites | Germany | Search report |
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| BR9806657A | Brazil | A | |
| US6242525B1 | United States of America | B1 | |
| EP0915134B1 | European Patent Office (EPO) | B1 | |
| AT265495T | Austria | T | |
| ATE265495T1 | Austria | T1 | |
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Numbers
- Publication
- 0915134
- Application
- 981207905
Titles3
- German
- Thermoplastische Elastomere hoher Festigkeit, Elastizität und guter Einfärbbarkeit und daraus hergestellte hochschlagzähe Polymerblends
- English
- Thermoplastic elastomer with high resistance, elasticity and good paintability and high impact resistant polymer blends prepared therefrom
- French
- Elastomère thermoplastique avec une grande résistance, élasticité et bonne affinité pour les colorants ainsi que comme mélanges de polymères résistants à l'impact préparés à partir de celui-ci
Classification
- CPC, 7
- C08L51/06
- C08L23/10
- C08L23/16
- C08L53/00
- C08L2207/04
- C08L2312/02
- Y10T428/1352
- IPC, 5
- C08L23 08
- C08L23 10
- C08L23 16
- C08L51 06
- C08L53 00
Designated states2
- Contracting states, 1
- Sweden
- Extension states, 1
- Slovenia