Dyes for use in diverse applications
US5502205A · kind A · utility
1Cited by
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4Claims
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Key dates
| Filing date | May 31, 1995 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The synthesis and the application of new dyes is described. In particular said new dyes can be incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolourized in alkaline aqueous liquids used in the processing of said materials. In photographic applications dyes of the general formula (I) are provided with at least one ionizable group which permits solubilization in aqueous and or alkaline medium. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.