| abstract |
This invention relates to a cross-linkable, cationic radiation curable composition comprising (a) a non-volatile vinyl ether, epoxide, acrylate or an oligomer thereof (b) a cationic photoinitiator and (c) a divinyl ether polyacetal oligomer having the formula ##STR1## wherein n has a value of from 1 to 50; n X is uniformly sulfur or oxygen; n R is C 2 to C 4 alkeneoxy alkylene, poly(alkyleneoxy) alkylene, or a branched, linear or cyclic C 2 to C 20 alkylene and n R' is phenylene, diphenylene methane, diphenylene propane, xylylene, tolylene, or a branched, linear or cyclic C 2 to C 20 alkylene optionally substituted with an ether, ester, carbonate, carbamate, C 2 to C 4 alkyleneoxy alkylene or poly(C 2 to C 4 alkyleneoxy) alkylene radical. The invention also relates to the composition cured on a substrate. |