申请人:DAINICHISEIKA COLOR
& CHEMICALS MFG. CO. LTD.
公开号:EP1136278A1
公开(公告)日:2001-09-26
A thermal recording media has a base sheet, a thermal recording layer arranged on one side of the base sheet, and a back layer arranged on an opposite side of the base sheet. The back layer comprises a polyurethane having side chains derived from a fluorine-containing diol represented by the following formula ( I ) :
wherein Rf represents a perfluoroalkyl or perfluoroalkenyl group having 1 to 20 carbon atoms; X represents a substituted or unsubstituted alkylene group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenylene group represented by -CH=CH-(CH2)n- in which n stands for an integer of from 1 to 10, or
in which n stands for an integer of from 0 to 6; Y represents a direct bond, -O-, -NH-, or -R0-NH- in which R0 is an alkylene group having 1 to 6 carbon atoms; Z represents a direct bond or -N(R')R- in which R is an alkylene group having 1 to 20 carbon atoms and R' is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R1 and R2 each independently represent a divalent organic group; and R3 represents a residual group of an aliphatic, alicyclic or aromatic diisocyanate.
一种热敏记录介质具有基片、位于基片一侧的热敏记录层和位于基片另一侧的背层。背层包括聚氨酯,其侧链由下式 ( I ) 所代表的含氟二元醇衍生而来:
其中 Rf 代表具有 1 至 20 个碳原子的全氟烷基或全氟烯基; X 代表具有 1 至 10 个碳原子的取代或未取代的亚烷基、由 -CH=CH-(CH2)n- 代表的取代或未取代的烯基,其中 n 代表 1 至 10 的整数,或
其中 n 代表 0 至 6 的整数; Y 代表直接键、-O-、-NH- 或-R0-NH-,其中 R0 是具有 1 至 6 个碳原子的亚 烷基;Z 代表直接键或-N(R')R-,其中 R 是具有 1 至 20 个碳原子的亚烷基,R'是氢原子或具有 1 至 6 个碳原子的烷基;R1 和 R2 各自独立地代表二价有机基团;R3 代表脂肪族、脂环族或芳香族二异氰酸酯的残基。