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US 4,420,627 AGranted
Hydrazine dyes
AssigneePolaroid Corporation
InventorGary N. Widiger
Life of this patent
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Abstract
There are described novel compounds which are represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The compounds are useful as dyes.
Claims2
A compound represented by the formula ##STR20## wherein X is ##STR21## or --SO.sub.2 R.sub.1 ;
- Z is H, alkyl or aryl;
- R is H, alkyl or aryl provided that Z and R are not both H;
- DYE is a xanthene dye moiety;
- R.sub.1 is H, alkyl, aryl, --NH.sub.2, NHR.sub.2, ##STR22## or OR.sub.2 ;
- R.sub.2 is H, alkyl or aryl;
- and m is 1 or 2.
3 more elements
Dependencies are inferred from the claim text.