Graft copolymers as diffusion control layers in photographic diffusion transfer products
US4201587A · kind A · utility
10Cited by
3References
59Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Sep 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A .beta.-eliminating graft copolymer useful as a diffusion control layer in film units adapted for diffusion transfer processes is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.