2'-hydroxyphenyl benzotriazole based UV absorbing polymers and photographic elements containing them
US5610000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/132
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An ultraviolet absorbing polymer, and photographic elements containing such a polymer, which polymer includes units formed from monomers of the structure of formula (II): A photographic element containing an ultraviolet absorbing polymer which includes units formed from monomers of the structure of formula (I): ##STR1## wherein: p and q are, independently, 0 or 1; PA1 L and L.sub.2 are bivalent linking groups; PA1 R.sub.9 is a non-hydrogen group which does not contain any unsaturated carbon-carbon bonds; PA1 R.sub.10 is H, alkyl group, aryl group, or heterocyclyl group; PA1 A is an ethylenically unsaturated polymerizable group; the benzene ring of the benzotriazole and the 2'-hydroxyphenyl ring each may be further substituted or unsubstituted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.