Vulcanizable silicon terminated polyurethane polymer compositions having improved cure speed

摘要

Room-temperature-curable silicon-terminated organic sealant compositions having improved cure speeds, and metal and glass primer compositions for use therewith. These sealant compositions comprise a blend of a small amount of N-beta-aminoethyl, gamma - aminopropyl trimethoxy silane with an organosilicon-capped, isocyanate-terminated polyurethane polymer. The composition further comprises a carbon black filler containing less than 0.05% of water and preferably further comprises a moisture-curing catalyst such as dibutyl tin diacetate.