Thermoplastic composition containing a grafted copolymeric acryl

Details Thermoplastic composition containing a grafted copolymeric acryl Thermoplastic composition containing a grafted copolymeric acryl

1997-02-26

1998-11-24

Zitomer, Fred

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

Synthetic resins

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

525 70, 525 80, 525238, 525302, 525307, C08L 5104

Patent

active

058408037

ABSTRACT:
A thermoplastic molding composition which contains (i) a grafted copolymer rubber having a grafted phase of styrene-acrylonitrile phase and a crosslinked (meth)acrylate-acrylonitrile substrate, and (ii) an ungrafted, uncrosslinked SAN having a number average molecular weight of about 20,000 to 100,000 is disclosed. The composition which is further characterized in that it contains no additional grafted copolymer rubber based on crosslinked (meth)acrylate-acrylonitrile substrate and in that the grafted copolymer rubber is present in particulate form where the particles have a monomodal size distribution and a weight average particle size of 0.05 to 0.5 microns exhibits improved mechanical properties.

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patent: 4880875 (1989-11-01), Wassmuth et al.
patent: 5120788 (1992-06-01), Seitz et al.
patent: 5252666 (1993-10-01), Seitz et al.

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