Method of preparing photographic elements incorporating polymeric ultraviolet absorbers
US5372922A · kind A · utility
10Cited by
21References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Dec 29, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of preparing a photographic element containing a UV filter composition. In the method a UV absorbing polymer latex is prepared by emulsion polymerization, then loaded with a high boiling point organic solvent. The high boiling poing organic solvent has a boiling point at atmospheric pressure of at least 200.degree. C. The loaded polymer latex is then incorporated into a photographic element. Photographic elements containing UV polymer latexes particularly of a UV absorbing polymer containing benzotriazole monomers loaded with high boiling point organic solvents, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.