Compositions for forming poly(oxazolidone/urethane)...

Details Compositions for forming poly(oxazolidone/urethane)... Compositions for forming poly(oxazolidone/urethane)...

C - Chemistry, Metallurgy

08

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402/143, 402/150

C08G 18/58 (2006.01) C08G 59/00 (2006.01) C08G 59/12 (2006.01) C08G 59/16 (2006.01) C08G 59/42 (2006.01) C08L 63/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 1210889

COMPOSITIONS FOR FORMING POLY(OXAZOLIDONE/ URETHANE) THERMOSETS AND PRODUCTS THEREFROM Abstract of the Disclosure Reaction of a diepoxide with a mono-, or, preferably, dicarboxylic acid yields a prepolymer having both hydroxy and epoxy groups. This pre- polymer, when reacted with a polyisocyanate, yields a poly(oxazolidone/urethane) thermoset composition which is substantially free of isocyanurate linkages. The thermoset contains oxazolidone linkages in its backbone which are separated from one another by ester linkages. Urethane linkages are present in side chains attached to the polymer backbone of the thermoset.

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