Color developing composition and method of use in photoprocessing
US6096489A · kind A · utility
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10References
11Claims
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Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/413
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic color developing composition includes a color developing agent and at least 0.005 g/l of an anti-tar agent. Such anti-tar agents include a fluoroalkylpolyethyleneoxy alcohol, polyvinyl alcohol, a polyethylene glycol, a free acid of an organic phosphate ester or a salt thereof, or a polyethyleneoxide(20) sorbitan monooleate Inclusion of these agents has been found to significant reduce or elimination tar formation during the processing of color photographic materials, especially color motion picture films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.