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US 6,660,796 B2Granted
Polyester molding composition
AssigneeDegussa AG
InventorsRalf Schueler, Heinz Peirick, Guido Schmitz, Georg Oenbrink, Harald Haeger
Life of this patent
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Abstract
The present invention relates to a molding composition containing thermoplastic polyesters, impact-modifying component which contains anhydride groups, a copolymer of α-olefin, acrylic compound, olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline and/or oxazinone, which has improved low-temperature impact strength; methods of making molding with the molding composition and molding containing the composition.
Claims28
A molding composition which consists essentially of the following components:
- I. from 60 to 96.6 parts by weight of thermoplastic polyesters;
- II. from 3 to 39.5 parts by weight of an impact-modifying component which contains anhydride groups, where the impact-modifying component is selected from the group consisting of ethylene/α-olefin copolymers and styrene-ethylene/butylene block copolymers;
- III. from 0.4 to 20 parts by weight of a copolymer which contains units of the following monomers:
- a. from 20 to 94.5% by weight of one or more α-olefins having from 2 to 12 carbon atoms,
- b. from 5 to 79.5% by weight of one or more acrylic compounds selected from the group consisting of:
- acrylic acid, methacrylic acid, acrylic acid salts, methacrylic acid salts, esters of acrylic acid with a C1-C12 alcohol, esters of methacrylic acid with a C1-C12 alcohol, acrylonitrile and methacrylonitrile, acrylamides and methacrylamides;
- and
- c. from 0.5 to 50% by weight of an olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline or oxazinone, wherein the total of components I, II and III is 100 parts by weight.
5 more elements
A molding composition which comprises the following components:
- I. from 60 to 96.6 parts by weight of thermoplastic polyesters;
- II. from 3 to 39.5 parts by weight of an impact-modifying component which contains anhydride groups, where the impact-modifying component is selected from the group consisting of ethylene/α-olefin copolymers and styrene-ethylene/butylene block copolymers;
- III. from 0.4 to 20 parts by weight of a copolymer which contains units of the following monomers:
- a. from 20 to 94.5% by weight of one or more α-olefins having from 2 to 12 carbon atoms,
- b. from 5 to 79.5% by weight of one or more acrylic compounds selected from the group consisting of:
- acrylic acid, methacrylic acid, acrylic acid salts, methacrylic acid salts, esters of acrylic acid with a C1-C12 alcohol, esters of methacrylic acid with a C1-C12 alcohol, acrylonitrile and methacrylonitrile, acrylamides and methacrylamides;
- and
- c. from 0.5 to 50% by weight of an olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline or oxazinone,
- wherein the total of components I, II and III is 100 parts by weight,
- wherein in component I from 0.1 to 10 parts by weight of the polyester is replaced with a polyamine-polyamide copolymer comprising the following monomers:
- a. from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and a number-average molar mass Mn of at least 146 g/mol;
- and
- b. polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids, and equimolar combinations of diamine and dicarboxylic acid.
10 more elements
A molding composition which consists essentially of the following components:
- I. from 60 to 96.6 parts by weight of thermoplastic polyesters;
- II. from 3 to 39.5 parts by weight of an impact-modifying component which contains anhydride groups, where the impact-modifying component is selected from the group consisting of ethylene/α-olefin copolymers and styrene-ethylene/butylene block copolymers;
- III. from 0.4 to 20 parts by weight of a copolymer which contains units of the following monomers:
- a. from 20 to 94.5% by weight of one or more α-olefins having from 2 to 12 carbon atoms,
- b. from 5 to 79.5% by weight of one or more acrylic compounds selected from the group consisting of:
- acrylic acid, methacrylic acid, acrylic acid salts, methacrylic acid salts, esters of acrylic acid with a C1-C12 alcohol, esters of methacrylic acid with a C1-C12 alcohol, acrylonitrile and methacrylonitrile, acrylamides and methacrylamides;
- and
- c. from 0.5 to 50% by weight of an olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline or oxazinone,
- wherein the total of components I, II and III is 100 parts by weight;
- and one or more additives selected from the group consisting of plasticizers, pigments, and fillers.
7 more elements
Dependencies are inferred from the claim text.