| 摘要 |
A thermal recording material comprising a support having thereon at least one layer containing an electron donating colorless dye, an electron accepting compound and a diaryloxyalkane derivative represented by the following general formulae (I) to (III) Ar1O (CH2)nOAr2 (I) Ar2O-W-OAr3 (II) Ar2OR-X-ROAr3 (III) wherein Ar1 represents an aryl group having at least one substituent selected from the group consisting of an alkoxyl group containing 2 or more carbon atoms, an alkoxycarbonyl group containing 3 or more carbon atoms, an aryloxyl group, an aryloxycarbonyl group, an alkenyl group containing 2 or more carbon atoms, an aryl group containing 4 or more carbon atoms an acyloxyl group containing 2 or more carbon atoms, a fulorine atom, a bromine atom, a carboxyl group, an alkylenedioxy group, a cycloalkyl group and a hydroxyl group; Ar2 and Ar3 each represents a substituted or unsubstituted aryl group the substituent thereof being selected from the group consisting of an alkyl group, an alkenyl group a cycloalkyl group, a cycloaklenyl group, a halogen atom, an acyl group, an acyloxyl group, an alkoxyl group, a thioalkoxyl group, a alkoxycarbonyl group, an aryloxycarbonyl group, an aryloxyl group, a cyano group, a hydroxyl group, a carboxyl group, an aryl group, an alkylenedioxy group and an aralkyl group and Ar2 and Ar3 are the same or different; R represents a divalent group containing from 1 to 6 carbon atoms; X represents -S-, -OCH2O-, <IMAGE> <IMAGE> (wherein R1 and R2 each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkoxyl group, an acyloxyl group or a lower alkyl group and R1 and R2 are the same or different; R3 represents a hydrogen atom, a lower alkyl group, a lower alkoxyl group or a halogen atom; and m is an integer of 1 or 2) W represents a branched alkylene group, and n is an integer of from 1 to 10.
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