Radiation polymerizable starch ester-urethanes

Details Radiation polymerizable starch ester-urethanes Radiation polymerizable starch ester-urethanes

C - Chemistry, Metallurgy

08

B

C08B 31/04 (2006.01) C08B 31/00 (2006.01) C08B 33/02 (2006.01) C08B 35/02 (2006.01) C08F 290/10 (2006.01) C08J 3/28 (2006.01) C09D 4/06 (2006.01)

Patent

CA 2078690

2078690 9213894 PCTABS00014 Modified starch ester-urethanes prepared by reacting a starch ester containing residual hydroxyl groups with an ethylenically unsaturated isocyanate. The grafted starch ester is a urethane-containing product having pendent groups such as alpha-methylstyrene and/or methacrylate moieties. The starch ester-urethane is capable of undergoing crosslinking reactions on exposure to ultraviolet radiation in the presence of a photoinitiator, and optionally ethylenically unsaturated monomers or oligomers. The ethylenically unsaturated starch ester-urethanes of this invention are useful for protective coatings for wood, metal, and plastics.

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