urethanes include those known under the trade designations u201c uvithane 782 u201d available from morton thiokol chemical and u201c cmd 6600 u201d u201c cmd 8400 u201d and u201c cmd 8805 u201d available from radcure specialties acrylated epoxies are diacrylate esters of epoxy resins such as the diacrylate esters of bisphenol a epoxy resin examples of commercially available acrylated epoxies include those known under the trade designations u201c cmd 3500 u201d u201c cmd 3600 u201d and u201c cmd 3700 u201d available from radcure specialties ethylenically unsaturated resins include both monomeric and polymeric compounds that contain atoms of carbon hydrogen and oxygen and optionally nitrogen and the halogens oxygen or nitrogen atoms or both are generally present in ether ester urethane amide and urea groups ethylenically unsaturated compounds may have a molecular weight of less than about 4 000 and may be esters made from the reaction of compounds containing aliphatic monohydroxy groups or aliphatic polyhydroxy groups and unsaturated carboxylic acids such as acrylic acid methacrylic acid itaconic acid crotonic acid isocrotonic acid maleic acid and the like representative examples of acrylate resins include methyl methacrylate ethyl methacrylate styrene divinylbenzene vinyl toluene acrylamide methylacrylamide n methylacrylamide n n dimethylacrylamide n vinylpyrrolidone and n vinylpiperidone the aminoplast resins have at least one pendant u03b1 u03b2 unsaturated carbonyl group per molecule or oligomer these unsaturated carbonyl groups can be acrylate methacrylate or acrylamide type groups examples of such materials include n hydroxymethyl acrylamide n n u2032 oxydimethylenebisacrylamide ortho and para acrylamidomethylated phenol acrylamidomethylated phenolic novolac and combinations thereof these materials are further described in u s pat nos 4 903 440 and 5.