Thiacyanine betaine blue sensitizing dyes
US4250244A · kind A · utility
4Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1977 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Feb 2, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Photosensitivity of a blue-sensitive emulsion in a multi-color diffusion transfer photographic system is enhanced by sensitizing the emulsion with certain 3,3'-disubstituted 4,5-benzothia-thiacyanine betaines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.