Photographic element containing gelatin-modified polyurethane
US5952164A · kind A · utility
1Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/35
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a photographic element including a support, at least one silver halide emulsion layer superposed on said support; and at least one auxiliary layer. The auxiliary layer includes a gelatin-grafted-polyurethane which is formed by coating and subsequent drying of a coating composition comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.