Isocyanate terminated prepolymers and the use thereof in a...

Details Isocyanate terminated prepolymers and the use thereof in a... Isocyanate terminated prepolymers and the use thereof in a...

C - Chemistry, Metallurgy

08

G

C08G 18/70 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2041546

Mo3454 PU-317 NOVEL ISOCYANATE TERMINATED PREPOLYMERS AND THE USE THEREOF IN A RIM PROCESS ABSTRACT OF THE DISCLOSURE The present invention is directed to a novel prepolymer and the use thereof in a RIM process. The prepolymer is an isocyanate terminated prepolymer having an isocyanate group content of from about 10 to about 26% by weight, and being prepared by a process comprising: (a) reacting a C1 to C5 alkyl acetoacetate, with a polyol having a molecular weight of from about 500 to about 6000, and a hydroxyl functionality of from 2 to 4, and (b) reacting the resultant product with an organic di- and/or polyisocyanate. Mo3454

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