Thermographic material, used in labels, e.g. for frozen food

摘要

Thermographic material, with a substrate and heat sensitive front coat containing color coupler and acceptor, has a back coat of a mixture containing: (i) starch; (ii) an acrylate copolymer with a film formation temperature less than 5 deg C, containing no styrene or vinyl acetate components; and (iii) an alkaline catalyst.