Graft copolymers and impact-resistant flame-retardant resin...

Details Graft copolymers and impact-resistant flame-retardant resin... Graft copolymers and impact-resistant flame-retardant resin...

2003-02-17

2009-11-10

Moore, Margaret G (Department: 1796)

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

Synthetic resins

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

C525S464000

Reexamination Certificate

active

07615594

ABSTRACT:
The present invention provides a polyorganosiloxane-containing graft copolymerwhich is obtainable by polymerizing 0.5 to 10 parts by weight of a vinyl monomer (B) comprising 100 to 50% by weight of a polyfunctional monomer (b-1) containing two or more polymerizable unsaturated bonds in the presence of 40 to 90 parts of polyorganosiloxane particles,followed by further polymerizing 5 to 50 parts by weight of a vinyl monomer (C);A polyorganosiloxane-containing graft copolymerwhich is obtainable by polymerizing 0 to 10 parts by weight of a vinyl monomer (B) comprising 100 to 50% by weight of a polyfunctional monomer containing two or more polymerizable unsaturated bonds in the presence of 30 to 95 parts of a polyorganosiloxane in a latex form as obtained by seed polymerization using, as a seed polymer, a hydrophilic polymer capable of swelling in the corresponding organosiloxane,followed by further polymerizing 5 to 70 parts by weight of a vinyl monomer (C);a flame retardant which comprises said copolymer; anda resin composition which comprises said retardant and a thermoplastic resin.

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English Language Translation JP 2001-261755, Sep. 26, 2001.
European Search Report of the Corresponding European Patent Application No. EP 08 15 5938, mailed on Jul. 29, 2008, 5 pages.

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