Process for subbing photographic hydrophobic films
US4128426A · kind A · utility
14Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | Feb 25, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/93
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present application is directed to a process for subbing a photographic hydrophobic film which involves subjecting at least one surface of the film to a hydrophylizing pretreatment step, coating the pretreated surface with an aqueous dispersion containing a polymer which has particular comonomers in a combined amount of more than 76%, then coating the coated surface with a liquid containing colloidal silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.