ABS moulding material with improved workability and a high...

Details ABS moulding material with improved workability and a high... ABS moulding material with improved workability and a high...

2006-07-11

2006-07-11

Mullis, Jeffrey (Department: 1711)

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

Synthetic resins

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

C525S067000, C525S071000

Reexamination Certificate

active

07074854

ABSTRACT:
A Polymer compositions that features high degree of toughness, very good processability and extremely high gloss is disclosed. The composition contains(I) a graft rubber polymer obtained by emulsion polymerization of styrene and acrylonitrile in the presence of a mixture of(A) a butadiene polymer latex having a mean particle diameter d50≦250 nm, a particle size distribution width of 20 to 80 nm and a gel content of 30 to 95 wt. %,(B) a butadiene polymer latex with a mean particle diameter d50>250 to 350 nm, a particle size distribution width of 30 to 100 nm and gel content of 30 to 80 wt. %, and(C) a butadiene polymer latex (C) with a mean particle diameter d50>350 nm, a particle size distribution width of 40 to 150 nm, and a gel content of 50 to 95 wt. %. and(II) a rubber-free copolymer of styrene and acrylonitrile. At least one of (A), (B) and (C) is a product of seed polymerization.

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