Thermoplastic resin composition and its molded articles

Details Thermoplastic resin composition and its molded articles Thermoplastic resin composition and its molded articles

2005-09-27

2005-09-27

Seidleck, James J. (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...

C525S233000, C525S234000, C525S242000, C525S069000, C525S070000, C525S316000

Reexamination Certificate

active

06949607

ABSTRACT:
Thermoplastic resin compositions containing a rubber-reinforced thermoplastic resin (A) obtained by graft polymerizing a monomeric mixture (b) in the presence of a rubber-like polymer (a), and a copolymer (B) obtained by polymerizing an aromatic vinyl compound, a vinyl cyanide compound and optionally other copolymerizable monomeric compound(s), which copolymer (B) being a mixture of a copolymer (B1) having Mwof 50,000 to 110,000 and a copolymer (B2) having Mwof 115,000 to 400,000. The content of the rubber-like polymer (a) content in the rubber-reinforced thermoplastic resin (A) is 10 to 25% by weight, the vinyl cyanide monomeric unit in the acetone soluble matter is 15 to 40% by weight, and the ratios of Mw to Mnand MZto Mnof the acetone soluble matter being 2 to 5 and 5 to 11, respectively.

REFERENCES:
patent: 4187260 (1980-02-01), Kruse et al.
patent: 5569709 (1996-10-01), Sue et al.
patent: 5932655 (1999-08-01), Auclair et al.

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