Backside protective overcoat compositions for silver halide photographic elements
US5998118A · kind A · utility
1Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Feb 5, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/162
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a photographic element which includes a support having a frontside and a backside, at least one silver halide emulsion layer superposed on the frontside of the support; and a protective overcoat layer superposed on the backside of the support. The protective overcoat layer is a mixture of a first vinyl polymer having an acid number of from 5 to 100 and a second vinyl polymer having an acid number of from 70 to 250 wherein the acid number of the second polymer is greater than the acid number of the first polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.