Alkyl- or aryl-amino-pyridinyl- or pyrimidinyl-azo yellow dye-do

Details Alkyl- or aryl-amino-pyridinyl- or pyrimidinyl-azo yellow dye-do Alkyl- or aryl-amino-pyridinyl- or pyrimidinyl-azo yellow dye-do

1989-03-16

1990-04-03

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 428195, 428480, 428913, 428914, B41M 5035, B41M 526

Patent

active

049140779

ABSTRACT:
A yellow dye-donor element for thermal dye transfer comprising a plastic film support having thereon a yellow dye dispersed in a polymeric binder, the dye comprising an alkyl- or aryl-amino-pyridinyl- or pyrimidinyl-azo yellow dye which does not have any reactive pendant moiety capable of undergoing Michael-type addition.
In a preferred embodiment of the invention, the dye has the formula: ##STR1## where R.sup.1 and R.sup.2 each independently represent a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a cycloalkyl group having from about 5 to about 7 carbon atoms or an aryl group having from about 6 to about 10 carbon atoms;

REFERENCES:
patent: 4614521 (1986-09-01), Niwa et al.

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