Methods of forming polymeric couplers
US5455147A · kind A · utility
1Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Jun 21, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Color photographic materials comprise a support bearing a silver halide emulsion and at least one water-dispersible polymeric coupler. The polymeric coupler is formed by polymerization of a mixture of at least one ethylenically unsaturated coupler monomer containing a dye-forming coupler moiety and at least one ionic monomer containing an ionizable functional group, in a water-miscible organic solvent. The polymeric coupler contains less than 10 weight percent of the ionic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.