Color photographic element containing speed-improving polymers
US6316177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/33
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a color silver halide photographic element comprising a light-sensitive silver halide emulsion layer or a non-silver containing light-insensitive layer, said light-sensitive or light-insensitive layer containing a polymer compound comprising a heterocycle unit derived from: PA1 (a) a heterocycle monomer (1) comprising two or more annulated rings containing, in total, a minimum of three ring heteroatoms of which no more than two of the heteroatoms are connected in sequence to each other and (2) having a ClogP less than 6.2; or PA1 (b) a monocyclic heterocycle monomer having exactly three ring heteroatoms and having a ClogP less than 8.75; PA1 with the proviso that the heterocycle unit does not contain a hydroxy or mercapto group (or their tautomeric equivalent), and does not react with oxidized developer; and PA1 the amount of the polymer compound in the element being sufficient to increase the photographic speed of the element compared to the same element without the compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.