Heat-sensitive transfer sheet containing blue dyestuff

Coating processes – Transfer or copy sheet making – Reactive components

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8639, 106 145, 106 22R, 106 23R, 106 21D, 427144, 427146, 427148, 427153, 462 67, 534788, 534831, 534832, 534847, 534852, B41M 526, B41M 312

Patent

active

055674704

ABSTRACT:
A blue dyestuff represented by the formula (2) ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is independently a hydrogen atom, halogen atom, nitro group, hydroxy group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R.sub.4 and R.sub.5 is independently an alkyl group which may have a substituent, and a heat-sensitive transfer sheet containing the above-mentioned dyestuff.

REFERENCES:
patent: 3455898 (1969-07-01), Seefelder et al.
patent: 3573273 (1971-03-01), Seefelder et al.
patent: 3919188 (1975-11-01), Hagen et al.
patent: 4013405 (1977-03-01), Donenfeld
patent: 4289694 (1981-09-01), Belfort
patent: 4774076 (1988-09-01), Reinhardt
patent: 5126311 (1992-06-01), Evans et al.
CA 112:22338z no date available.
CA 112;120598d no date available.
Sokolowska-Gajda, "The Application of Some Alkyl Esters . . . ", Dyes and Pigments 18 (1992) No. 2, pp. 103-113.
Johnson et al., "Thermal Dye Transfer", Dec. 1990, Res. Discl, 320, pp. 927-939.

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