Hydrophilic colloid composition
US5958660A · kind A · utility
10Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention comprises a composition containing a hydrophilic colloid and a water soluble polymer of boric acid, and optionally a hardening agent for the hydrophilic colloid. The hydrophilic colloid is preferably gelatin. This invention also comprises a photographic element in which at least one layer thereof contains a hydrophilic colloid and a water-soluble polymer of boric acid and a method of making the photographic element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.