Patent ID: 6977279
Filing Date: 2005-12-20
Classification: C08G

Abstract:
1. A solventless reactive system, which is curable at room temperature and which comprises A) a polyisocyanate component comprising at least one organic polyisocyanate having a molecular weight, excluding the weight of the blocking agent, of 168 to 25,000 and in which at least 95 mole % of the NCO groups are reversibly blocked with at least one hydrocarbon resin containing phenolic OH groups and having an OH content of 0.1% to 10.0%, based on the weight of the hydrocarbon resin, wherein the hydrocarbon resin is prepared by copolymerizing phenol in the presence of strong acids or catalysts with one or more unsaturated hydrocarbons selected from the group consisting of butene, butadiene, pentene, piperylene, isoprene, cyclopentadiene, styrene, α-methylstyrene, vinyltoluene, dicyclopentadiene, methyldicyclopentadiene, indene and methylindene, B) at least one organic amine having at least 2 primary amino groups, C) an oxirane compound containing more than one epoxy group per molecule and D) a catalyst comprising 2,3-dimethyl-3,4,5,6-tetrahydropyrimidine of formula (I):