Graft copolymers and method to prepare same

Details Graft copolymers and method to prepare same Graft copolymers and method to prepare same

2006-04-18

2006-04-18

Choi, Ling-Sui (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S307400, C526S316000, C526S348000, C526S263000, C526S266000

Reexamination Certificate

active

07030202

ABSTRACT:
A thermally processable graft copolymer formed from a water soluble polymer and a water insoluble polymer, wherein the graft copolymer forms a hydrogel upon exposure to water. A method to form such a hydrogel-forming graft copolymer by copolymerizing a water soluble 2-substituted-2-oxazolines with a water insoluble 2-substituted-2-oxazoline. A method to form such a hydrogel-forming graft copolymer by transamidating a poly-2-oxazoline with a carboxylic acid terminated water-insoluble polymer.

REFERENCES:
patent: 4709039 (1987-11-01), Chou
patent: 5063262 (1991-11-01), Hildebrand
George Odian, “Principles of polymerization”, third edition, p. 20, (1991).

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