초록 ▼

Compositions of the invention comprise a radiation sensitive compound having ethylenic unsaturation and at least one moiety selected from the group consisting of a urea moiety, a urethane moiety and mixtures thereof, a radiation insensitive compound having a number average molecular weight of at lea

Compositions of the invention comprise a radiation sensitive compound having ethylenic unsaturation and at least one moiety selected from the group consisting of a urea moiety, a urethane moiety and mixtures thereof, a radiation insensitive compound having a number average molecular weight of at least about 400 comprising at least about 40 percent, by weight, based on the weight of the radiation insensitive compound, of aromatic ring moieties and having a hydroxyl equivalent weight of between about 200 and 1500 and a crosslinking agent reactive with the hydroxyl groups present in said radiation insensitive compound, said crosslinking agent being selected from the group consisting of an aminoplast resin, a blocked isocyanate and mixtures thereof. The composition is capable of being cured using heat and either ultraviolet light or ionizing radiation. A process for applying and curing the composition of the invention on a substrate is also disclosed.

대표청구항 ▼

A process comprising the steps of: (a) applying to a substrate a composition comprising (i) a radiation sensitive compound having ethylenic unsaturation and at least one moiety selected from the group consisting of a urea moiety, a urethane moiety and mixtures thereof, (ii) a radiation insensitive c

A process comprising the steps of: (a) applying to a substrate a composition comprising (i) a radiation sensitive compound having ethylenic unsaturation and at least one moiety selected from the group consisting of a urea moiety, a urethane moiety and mixtures thereof, (ii) a radiation insensitive compound having a number average molecular weight of at least about 400, comprising at least about 40 percent, by weight, based on the weight of said radiation insensitive compound, of aromatic ring moieties and having a hydroxyl group equivalent weight of between about 200 and 1500, and (iii) a crosslinking agent reactive with the hydroxyl groups present in said radiation insensitive compound, said crosslinking agent being selected from the group consisting of an aminoplast resin, a blocked isocyanate and mixtures thereof, such that said composition is capable of being cured using heat and either ionizing radiation or ultraviolet light. (b) partially curing said composition in a first curing step; and (c) further curing said composition in a second curing step; wherein one of said curing steps comprises exposing said coated substrate to either ultraviolet light or ionizing radiation and the other curing step comprises exposing said coated substrate to heat.