Rubber-modified polymer composition

Details Rubber-modified polymer composition Rubber-modified polymer composition

1996-12-27

1998-05-26

Woodward, Ana

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 64, 525 67, 525 68, 525 70, C08L 7700, C08L 6700, C08L 6900, C08L 7112

Patent

active

057565767

ABSTRACT:
The invention relates to a polymer composition comprising 5 to 79 wt. % of a graft copolymer of vinyl aromatic monomer units and monomer units chosen from the group of C.sub.1 -C.sub.4 alkyl methacrylates, C.sub.1 -C.sub.4 alkyl acrylates, methacrylonitrile and acrylonitrile on a rubber, 90 to 20 wt. % of a thermoplastic polymer with polar groups, and 1 to 50 wt. % of a terpolymer comprising a vinyl aromatic monomer, at least one monomer chosen from the group of C.sub.1 -C.sub.4 alkyl methacrylates, C.sub.1 -C.sub.4 alkyl acrylates, methacrylonitrile and acrylonitrile, and 0.2 to 5 mol % of an .alpha.,.beta.-unsaturated compound containing dicarboxylic anhydride, the wt. % of components (A), (B) and (C) being relative to the total weight of components (A), (B) and (C), characterized in that the molar mass of component (C) is comprised between 160,000 g/mol and 230,000 g/mol. The polymer composition has excellent mechanical properties, in particular a high impact resistance at low temperatures.

REFERENCES:
patent: 4987185 (1991-01-01), Aoki et al.

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