Photographic coating compositions and photographic elements made therefrom
US5834172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic coating composition comprising an aqueous medium containing a hydrophilic colloid and having dispersed therein solid particles of a yellow filter dye also contains a oxidized developer scavenger of formula III ##STR1## wherein x.sup.1 =hydrogen or a process cleavable group; PA2 R.sup.14 =an electron withdrawing and aqueous solubilizing group; PA2 R.sup.15 =a substituent group; PA2 R.sup.16 =a ballasting group; PA2 R.sup.17 =a substituent group; PA2 i=1, 2, 3, or 4; and PA2 j=1, 2, 3, or 4. The coating composition is stable with regard to crystal growth of the dispersed solid particles of filter dye even when held at coating temperatures (about 45.degree. C.) for several hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.