Curable composition comprising adhesion improver

Claim 1

A curable composition, which comprises a main component selected from the group consisting of a polyurethane resin, an epoxy resin, a silicone, a modified silicone, a polyvinyl chloride resin, an acrylic resin, a phenolic resin, a polyester resin, a polysulfide resin and a curable liquid rubber and an adhesion-improver, which comprises a reaction product of an amino compound having a primary and/or a secondary amino group in the molecule and a carbonyl compound of the formula: ##STR4## wherein R 1 and R 2 are the same or different and are each an alkyl having 1 to 16 carbon atoms or an alkoxy having 1 to 4 carbon atoms, said amino compound being a member selected from the group consisting of an alkoxyalkylamine having 1 to 10 carbon atoms in the alkoxy moiety and 1 to 10 carbon atoms in the alkyl moiety; a cycloalkyldiamine having 6 to 10 carbon atoms in the cycloalkyl moiety; selected from polyamidoamines and polyoxyalkylene ether amines and an epoxyalkylalkoxysilane compound selected from α-glycidoxypropyldimethylethoxysilane, α-glycidoxypropylmethyldiethoxysilane, α-glycidoxypropyltrimethoxysilane, B-3,4-epoxycyclohexyl)-ethyltrimethoxysilane, and B-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane; and a reaction product or a mixture of an aminoalkylalkoxysilane compound selected from N-(B-aminoethyl)aminomethyltrimethoxysilane, α-aminopropyltriethoxysilane, α-aminopropylmethyldiethoxysilane, N-(B-aminoethyl)-α-aminopropyltrimethoxysilane, N-(B-aminoethyl)-α-aminopropyltriethoxysilane, and N-(B-aminoethyl)-α-aminopropylmethyldimethoxysilane and a compound having an epoxy group selected from diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol A ethylene oxide adduct, triglycidyl ether of glycerin, diglycidyl ether of 1,6-hexanediol, and a polyglydicyl ether of hydrated bisphenol A.