Sulfonated xanthene dyes, and photographic products and processe

Details Sulfonated xanthene dyes, and photographic products and processe Sulfonated xanthene dyes, and photographic products and processe

1991-04-08

1993-02-16

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20902

Patent

active

051872820

ABSTRACT:
Xanthene derivatives having cations of the formula: ##STR1## in which X is an --SO.sub.2 --N(R.sup.6)--COR.sup.7 or --SO.sub.2 --N(R.sup.6)--CO.sub.2 (CH.sub.2).sub.2 Y grouping, wherein R.sup.6 is an alkyl group containing not more than about 6 carbon atoms, R.sup.7 is an alkyl or aryl group containing not more than about 10 carbon atoms and Y is an electron-withdrawing group; Z is a hydrogen atom or an --SO.sub.2 --N(R.sup.1)--R.sup.2 --NR.sup.3 R.sup.4 R.sup.5 grouping; R.sup.1 is hydrogen or an alkyl group containing not more than about 6 carbon atoms; R.sup.2 is an alkylene group containing from 2 to about 10 carbon atoms; R.sup.3 and R.sup.4 are each independently an alkyl group containing not more than about 6 carbon atoms, and R.sup.5 is a hydrogen atom or an alkyl group containikng not more than about 6 carbon atoms, are useful as light-screening dyes in photographic products and processes.

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