Method for preparing graft copolymers and compositions...

Details Method for preparing graft copolymers and compositions... Method for preparing graft copolymers and compositions...

2005-03-08

2005-03-08

Cheung, William K. (Department: 1713)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S458000, C524S609000

Reexamination Certificate

active

06864309

ABSTRACT:
An aqueous polymerization method for preparing graft copolymers is disclosed. Copolymer compositions produced therefrom are also disclosed. The method of the present invention includes (a) forming a macromonomer aqueous emulsion containing water insoluble macromonomer particles; (b) forming a monomer composition containing at least one ethylenically unsaturated monomer; and (c) combining at least a portion of the macromonomer aqueous emulsion and at least a portion of the monomer composition and polymerizing the resulting polymerization reaction mixture in the presence of an initiator to form a copolymer composition. The copolymer composition produced contains water insoluble particles of graft copolymer.

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