IP Library › Granted Patent US 9,644,090

Granted Patent B2

US 9,644,090 · App. 14/615,811 · Granted May 9, 2017

Polymer mixtures with optimized toughness/stiffness ratio and optical properties

Inventors: Norbert Niessner (Friedelsheim, DE); Michael Ishaque (Mannheim, DE); Philipp Böckmann (Bad Durkheim, DE); Rolf Minkwitz (Mannheim, DE)

Assignee: INEOS STYROLUTION EUROPE GMBH

C08L25/14 C08F220/18 C08L25/12 C08L33/20 C08L51/003 C08L51/04 C08L2205/025 C08L2205/03

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Quick Facts

Patent No.: US 9,644,090
App. No.: 14/615,811
Granted: May 9, 2017
Kind: B2

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Abstract

The invention relates to a polymer mixture made of styrene/nitrile monomer copolymers and of graft copolymers based on acrylate rubbers, and also to thermoplastic moulding compositions and mouldings produced therefrom and use of these.

Claims (87)

1. A polymer mixture comprising a polymeric component of A1 and A2 and/or A3:

A1: from 5 to 95% by weight of a copolymer A1 of

A11: from 60 to 80% by weight of at least one styrene or styrene derivative A11,

A12: from 40 to 20% by weight of at least one ethylenically unsaturated monomer A12 comprising a nitrile group,

A13: from 0 to 20% by weight of at least one other, copolymerizable monomer A13;

A2: from 5 to 50% by weight of a graft copolymer A2 with median particle size from 90 to 280 nm, of:

A21: from 60 to 80% by weight of at least one rubber-like graft base A21 with Tg<0° C. made of

A211: from 70 to 99.8% by weight of at least one alkyl acrylate A211,

A212: from 0.2 to 0.6% by weight of at least one allyl methacrylate A212,

A214: from 0 to 29.9% by weight of at least one other of the following copolymerizable monomers A214 selected from methyl methacrylate, ethyl methacrylate, phenylmaleimide, acrylamide, and vinyl methyl ether,

A22: from 20 to 40% by weight of at least one graft shell made of:

A221: from 65 to 70% by weight of at least one vinylaromatic monomer A221,

A222: from 30 to 35% by weight of at least one polar, copolymerizable unsaturated monomer A222;

and/or

A3: from 5-50% by weight of a graft copolymer A3 with particle size from 300 to 600 nm, of:

A31: from 60 to 80% by weight of at least one rubber-like graft base A31 with Tg<0° C. made of:

A311: from 70 to 99.9% by weight of at least one alkyl acrylate A311,

A312: from 0.1 to 0.2% by weight of at least one allyl methacrylate A312,

A314: from 0 to 29.9% by weight of at least one other of the following copolymerizable monomers A314 selected from methyl methacrylate, ethyl methacrylate, phenylmaleimide, acrylamide, and vinyl methyl ether,

A32: from 20 to 40% by weight of at least one graft shell made of:

A321: from 65 to 70% by weight of at least one vinylaromatic monomer A321,

A322: from 30 to 35% by weight of at least one polar, copolymerizable unsaturated monomer A322,

where the total of the proportions of polymer components A1, A2, and/or A3 is 100% by weight of the polymeric component.

2. The polymer mixture as claimed in claim 1 , where the mixture further comprises auxiliaries and/or additives.

3. The polymer mixture as claimed in claim 1 , characterized in that the vinylaromatic monomer A221 and A321 is styrene, α-methylstyrene or a mixture thereof.

4. The polymer mixture as claimed in claim 1 , characterized in that the polar monomer A222 and A322 is acrylonitrile, methacrylonitrile or a mixture thereof.

5. The polymer mixture as claimed in claim 1 , comprising:

A1: from 5 to 95% by weight of a copolymer A1 of

A11: from 60 to 80% by weight of styrene or α-methylstyrene A11,

A12: from 40 to 20% by weight of acrylonitrile A12,

A2: from 5 to 50% by weight of a graft copolymer A2 with median particle size from 90 to 280 nm, of

A21: from 60 to 80% by weight of a rubber-like graft base A21 with Tg<0° C. made of

A211: at most 99.8% by weight of at least one alkyl acrylate having from 1 to 8 carbon atoms in the alkyl moiety A211,

A212: from 0.2 to 0.6% by weight of allyl methacrylate A212,

A22: from 20 to 40% by weight of at least one graft shell made of:

A221: from 65 to 70% by weight of styrene or α-methylstyrene A221,

A222: from 30 to 35% by weight of acrylonitrile A222,

and/or

A3: from 5-50% by weight of a graft copolymer A3 with particle size from 300 to 600 nm, of

A31: from 60 to 80% by weight of at least one rubber-like graft base A31 with Tg<0° C. made of

A311: at most 99.9% by weight of at least one alkyl acrylate having from 1 to 8 carbon atoms in the alkyl moiety A311,

A312: from 0.1 to 0.2% by weight of allyl methacrylate A312

A32: from 20 to 40% by weight of at least one graft shell made of:

A321: from 65 to 70% by weight of styrene or α-methylstyrene A321,

A322: from 30 to 35% by weight of acrylonitrile A322,

where the ratio by weight of component A2 to component A3 (if both are present) is from 3:1 to 1:1, and the total of the proportions of polymer components A1, A2, and/or A3 is 100% by weight of the polymeric component.

6. The polymer mixture of polymer components A1, A2, and A3 as claimed in claim 1 , characterized in that:

from 0.4 to 0.5% by weight of allyl methacrylate A212.

7. A molding produced from a polymer mixture as claimed in claim 1 .

8. A method of using moldings as claimed in claim 7 for outdoor applications comprising the step of affixing the molding to a substrate.

9. A process for the production of the polymer mixtures as claimed in claim 1 , by mixing polymer components A1 and A2, and/or A3.

10. A polymer mixture comprising a polymeric component of A1, A2, and A3:

A1: from 10 to 90% by weight of a copolymer A1 of