Dye-donor element for use according to thermal dye sublimation transfer

摘要

Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side a dye layer and on the other side a heat-resistant layer, characterized in that said heat-resistant layer comprises a polyether containing at least 10 mol % recurring units corresponding to the following formula (I) O-E-O-E'-(I) wherein -O-E-O- represents a divalent diphenolate radical corresponding to the following general formula (II)erent) represent hydrogen, halogen, a C1-C8 alkyl group, a C5-C6 cycloalkyl group, a C6-C10 aryl group or a C7-C12 aralkyl group; and X represents the necessary atoms to close a 5- to 8-membered cycloaliphatic ring which may be substituted with one or more C1-C6 alkyl groups or 5- to 6-membered cycloalkyl groups or carry fused-on 5- or 6-membered cycloalkyl groups; -E'- represents a divalent radical of an aromatic sulfone corresponding to the following general formula (III) (III) or a divalent radical of a diarylketone corresponding to the following general formula (IV) responding to the following general formula (V) nd IV (same or different) represent difunctional aromatic radicals having 6 to 50 carbon atoms.