Graft copolymer particles their production and compositions comp

Details Graft copolymer particles their production and compositions comp Graft copolymer particles their production and compositions comp

1995-06-05

1996-08-06

Sweet, Mark D.

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

Synthetic resins

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

525 66, 525 68, 525 70, 525 77, 525 80, 528 26, C08G 7704

Patent

active

055434606

ABSTRACT:
Graft copolymer particles obtained by graft-polymerizing one or more kinds of vinyl monomer onto a compound rubber comprising a polyorganosiloxane component and an alkyl (meth)acrylate rubber component, which graft copolymer particle has a number average particle size of 0.01 to 0.07 .mu.m, the volume of particles larger than 0.10 .mu.m being 20% or less of the whole particle volume, a method for producing the above graft copolymer particle, wherein one or more kinds of vinyl monomer are graft-polymerized onto a compound rubber obtained by polymerizing an alkyl (meth)acrylate rubber component comprising alkyl (meth)acrylate and a polyfunctional alkyl (meth)acrylate with a polyorganosiloxane having a number average particle size of 0.003 to 0.06 .mu.m, the volume of particles larger than 0.10 .mu.m being 20% or less of the whole particle volume, and thermoplastic resin compositions comprising the above graft copolymer and various thermoplastic resins.
The present invention provides graft copolymer particles and their thermoplastic resin composition which can give molded products having both excellent pigment colorability and extremely high impact resistance.

REFERENCES:
patent: 4690986 (1987-09-01), Sasaki et al.
patent: 4885209 (1989-12-01), Lindner et al.
patent: 4894415 (1990-01-01), Sasaki et al.
patent: 5106908 (1992-04-01), Alsmarraie et al.
patent: 5219932 (1993-06-01), Yamamoto et al.

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