Mixed carbonate ester derivatives of quinophthalone dyes and the

Details Mixed carbonate ester derivatives of quinophthalone dyes and the Mixed carbonate ester derivatives of quinophthalone dyes and the

1990-06-29

1993-09-07

Springer, David B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546167, 546173, C09B 2500, C07D40504, C07D21514

Patent

active

052430529

ABSTRACT:
A mixed carbonate ester of a quinophthalone dye and a tertiary alkanol containing not more than about 9 carbon atoms, preferably a compound of the formula: ##STR1## wherein X is a sulfur atom or a carbonyl group; each Y independently is a hydrogen atom, a halogen atom, a --CO--OR.sup.4 or a --CO--NHR.sup.4 group, wherein R.sup.4 is an alkyl group containing not more than about 10 carbon atoms; R is a hydrogen atom or an --O--C(.dbd.O)--O--CR.sup.5 R.sup.6 R.sup.7 group; and R.sup.1, R.sup.2, R.sup.3, R.sup.5, R.sup.6 and R.sup.7 are each an alkyl group, subject to the proviso that R.sup.1, R.sup.2 and R.sup.3 together contain a total of not more than about 8 carbon atoms, and R.sup.5, R.sup.6 and R.sup.7 together contain a total of not more than about 8 carbon atoms.

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