Back to results
US 5,691,458 AGranted
Benzoisothiazole azo dyes
AssigneePolaroid Corporation
InventorsMichael J. Arnost, Peter Viski, David P. Waller, David C. Whritenour
Life of this patent
Estimating the term…
Abstract
There are described compounds which are represented by the formula ##STR1## The compounds are useful as dyes, and as intermediates and dye moieties in the preparation of compounds, which are particularly useful in imaging applications, such as, for example, diffusion transfer photographic systems.
Claims7
A compound represented by the formula ##STR17## wherein:
- R.sub.1 is:
- (1) SO.sub.2 NR.sub.7 R.sub.8 wherein R.sub.7 and R.sub.8 are independently hydrogen;
- linear or branched alkyl (C.sub.n H.sub.2n+1) wherein n is an integer from 1 to 6;
- alkyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, sulfonamido, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- cycloalkyl;
- benzyl;
- phenyl;
- phenyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- furan;
- pyridine;
- triazine;
- a heterocyclic group substituted with sulfamoyl, carboxy, carbamoyl, --COOCH.sub.3, --COOC.sub.6 H.sub.5, sulfo or alkyl having from 1 to 6 carbon atoms;
- or, taken together, along with the nitrogen atom to which they are attached, form morpholino or piperidino;
- or
- (2) R.sub.9 NCOR.sub.10 wherein R.sub.9 is hydrogen;
- alkyl having from 1 to 6 carbon atoms;
- or, alkyl substituted with hydroxy or alkoxy having from 1 to 4 carbon atoms;
- and R.sub.10 is hydrogen;
- alkyl having from 1 to 6 carbon atoms;
- alkyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, sulfonamido, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- cycloalkyl;
- benzyl;
- phenyl;
- phenyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- furan;
- pyridine;
- triazine;
- or, a heterocyclic group substituted with sulfamoyl, carboxy, carbamoyl, --COOCH.sub.3, --COOC.sub.6 H.sub.5, sulfo or alkyl having from 1 to 6 carbon atoms;
- and
- R.sub.2 is alkyl having from 1 to 6 carbon atoms;
- alkyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, sulfonamido, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- benzyl;
- phenyl;
- or, phenyl substituted with hydroxy, alkoxy having from 1 to 6 carbon atoms, halogen, sulfamoyl, carboxy, carbamoyl, carboxamido, --COOCH.sub.3, --COOC.sub.6 H.sub.5 or sulfo;
- and
- R.sub.3, R.sub.5 and R.sub.6 are independently hydrogen;
- halogen;
- or, alkyl having from 1 to 4 carbon atoms;
- and
- R.sub.4 is hydrogen;
- halogen;
- alkyl having from 1 to 4 carbon atoms;
- sulfamoyl;
- carboxy;
- carbamoyl;
- --COOCH.sub.3 ;
- --COOC.sub.6 H.sub.5 ;
- sulfo;
- alkylsulfonyl;
- or, phenylsulfonyl.
47 more elements
Dependencies are inferred from the claim text.