High elongation thermoforming ink-jet ink

摘要

An energy-curable ink or coating composition comprising: a monofunctional urethane monomer, such as a monofunctional urethane acrylate monomer; a monofunctional monomer; and, optionally, a colorant, photoinitiator, stabilizer, surfactant and/or a vinyl resin, for use as a thermoforming ink or coating that, when printed onto a substrate (1), elongates on thermoformation of the substrate (3) to adopt the shape of a mold (2), a method of printing on a thermoforming substrate using such an ink or coating and a printed thermoformed article (4).

主权项

1. An energy-curable thermoforming ink or coating comprising a monofunctional urethane acrylate monomer, a multifunctional monomer, a further monofunctional monomer, and a vinyl resin, wherein the further monofunctional monomer is either a monofunctional acrylate monomer or a monofunctional vinyl monomer; wherein the level of multifunctional monomer present is less than about 1 wt %; wherein the level of monofunctional urethane monomer present is at least about 15 wt %; and wherein the monofunctional urethane acrylate monomer is the reaction product of an isocyanate and a hydroxyl functional acrylate or a monofunctional epoxy acrylate;
wherein the monofunctional urethane acrylate is a compound of the formula (I):wherein
R1 is an aromatic or aliphatic group with the proviso that R1 does not contain an acrylate functional group; Y is selected from C1-C6 alkyl and n is from 1 to 5.