Polyurethane compositions derived from polyols containing a...

Details Polyurethane compositions derived from polyols containing a... Polyurethane compositions derived from polyols containing a...

C - Chemistry, Metallurgy

08

G

402/131, 18/715

C08G 18/60 (2006.01)

Patent

CA 1159599

ABSTRACT OF THE DISCLOSURE Polyols containing at least one carboxamide group, -(NHC=O)-, in the polyol backbone impart to polyurethane resin-forming systems a unique combination of normal pot life and accelerated curing characteristics without sacrifice of final physical proper- ties. Methods are given for preparation of such polyols which enable incorporation of a small, predetermined number of such carboxamide groups, not exceeding in number the hydroxyl function- ality of the polyol, into each and every individual polyol mole- cule. The rapid-curing/property-development characteristics of derived polyurethane resin-forming systems are especially valu- able in molding operations, where both mold cycle times and curing energy requirements are substantially reduced in compari- son with conventional polyurethane resin-forming systems having similar final physical properties.

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