Coating compositions containing ethylenically unsaturated carbamates

Claim 1

An air-dry coating composition comprising (a) an ethylenically unsaturated carbamate derived from a polyvinyl acetal of number average molecular weight in the range of about 10,000 to about 70,000 daltons and an ethylenically unsaturated isocyanate selected from the group consisting of 1-(1-isocyanatoethyl)-3-vinylbenzene, 1-(1-isocyanatoethyl)-4-vinylbenzene, 1-(1-isocyanato-1-methylethyl)-3-(1-methylethenyl)benzene and 1-(1-isocyanato-1-methylethyl)-4-(1-methylethenyl)benzene and (b) a β,γ-ethylenically unsaturated coreactant selected from the group represented by the formulae: R.sub.2 ((E).sub.m R.sub.3).sub.n, R.sub.5 (OCH.sub.2 Y).sub.p, R.sub.6 (CH(OCH.sub.2 Y).sub.2).sub.q and R.sub.7 (O.sub.2 CHY).sub.b, where R 2 is a radical of molecular weight less than about 15,000 daltons obtained by removal of active hydrogen from an active hydrogen compound selected from the group consisting of water, alcohols, thiols, carboxylic acids, carboxylic amides and amines, where the functionality of R 2 is n and is in the range of 1 to 10, where E is a divalent radical selected from the group represented by the formulae ##STR3## where X is selected from the group consisting of H, CH 3 , C 2 H 5 and CH 2 OCH 2 Y, Y being selected from the group consisting of CH═CH.sub.2, CH.sub.3 --C═CH.sub.2, and C.sub.2 H.sub.5 --C═CH.sub.2 where a is 0 or 1, where R 3 is hydrogen or an unsubstituted or substituted C 1 to C 10 hydrocarbyl radical, where R 4 is a divalent unsubstituted or substituted C 2 to C 10 hydrocarbyl radical and where the product of m and n is at least 2 and not more than about 60; where R 5 is a C 2 to C 12 aliphatic hydrocarbyl or oxahydrocarbyl radical of equivalence p in the range of 2 to 12; where R 6 is absent or is a C 1 to C 20 unsubstituted or substituted hydrocarbyl group and q is in the range of 2 to about 30; where R 7 is a radical of molecular weight less than about 10,000 daltons obtained by removal of 2b hydrogens from a polyol and b is in the range of about 2 to about 60; and wherein the allyloxy compound contains from 2 to 60 allyloxy groups per molecule.