Photographic processing compositions including hydrophobically modified thickening agent
US5422233A · kind A · utility
11Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic processing compositions comprising an aqueous alkaline medium and a hydrophobically modified thickening agent are disclosed. The subject thickening agent increases the viscosity of the processing composition while maintaining a relatively uniform homogenous mixture of the constituents thereof. The subject processing compositions are useful in photographic diffusion transfer film units and processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.