Accelerated cure composition containing an isocyanate functional prepolymer

摘要

A composition comprising: a) one or more isocyanate functional prepolymers; and b) one or more compounds containing one or more hydroperoxide groups; wherein components a) and b) are kept separate until cure is desired. The composition can be used in the form of a two part adhesive.

主权项

1. A composition comprising two parts A and B:
wherein part A includes, a) from 10 to 70 percent by weight of one or more isocyanate functional prepolymers which are the reaction product of an excess on an equivalents basis of one or more polyisocyanates with one or more compounds having two or more active hydrogen containing groups; b) from 0.05 to 5.0 percent by weight of one or more compounds containing one or more cycloaliphatic tertiary amino groups; c) from 5 to 35 percent by weight of one or more plasticizers; and, d) from 1 to 40 percent by weight of one or more fillers; wherein Part B comprises, e) from 0.05 to 5 percent by weight of one or more compounds containing one or more hydroperoxide groups; wherein the composition may include f) from 0 to 70 percent by weight of one or more compounds containing acrylate groups located in part A, part B or a combination thereof; the equivalents ratio of one or more compounds containing one or more hydroperoxide groups to one or more compounds containing one or more cycloaliphatic tertiary amino groups is about 50:1 to about 100:1 and the amounts are based on the weight of the composition.