Silver halide photographic element containing a coating aid
US4916054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Mar 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/7614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a silver halide photographic material having at least one light-sensitive silver halide emulsion layer on a support and containing, in the silver halide emulsion layer or in any other hydrophilic colloid layer, a coating aid of a general formula (I): EQU A--O--X--(B).sub.n --SO.sub.3 M (I) wherein PA0 X represents --(CH.sub.2 CH.sub.2 O).sub.a --(C.sub.3 H.sub.6 O).sub.b --; PA0 a represents 0 or from 1 to 50 on the average; PA0 b represents from 1 to 5 on the average; PA0 A represents an alkyl or alkenyl group having from 8 to 25 carbon atoms, or an aryl group; PA0 B represents a divalent linking group; PA0 n represents 0 or 1; and PA0 M represents a cation. Because of the incorporation of the coating aid, the coating compositions can be uniformly coated on the support with neither comet nor repelling. The photographic light-sensitive material therefore does not stain the photographic material, the processing solution and the rollers during the processing of the material, and, additionally, the material is free from static marks by static electricity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.