TRANSFER SHEET FOR THERMAL TRANSFER PRINTING

摘要

PURPOSE: To improve adhesion of a thermal transfer printing receiver in printing by protecting a receiver coat of dye-receptive polymer containing a crosslinked silicone release system from loss of release function when overlying a substrate or coating containing particulate metal salts or metal oxides by a protective polymeric interlayer comprising an acidic polymer composition. CONSTITUTION: The receiver coat comprising a dye-receptive composition containing crosslinked silicone release system is protected from loss of releasing function when overlaying a substrate or coating containing particulate metal salts or metal oxides by a protective interlayer comprising an acidic polymer composition selected from: a) an addition polymer in which at least 30% of its monomer molecule residues contain at least one carboxyl acid group. b) a blend of at least two addition polymers in which at least 30% of the monomer molecule residues in the blend contain at least one carboxylic acid group, c) a crosslinked addition polymer wherein the addition polymer molecules are substantially crosslinked to form an insoluble polymer matrix in the presence of excess strong organic acid.