Polyester coated films using an aqueous polyester dispersion and photographic layer
US4252885A · kind A · utility
77Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1978 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Mar 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/93
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light-sensitive photographic films are produced by coating polyester films with aqueous dispersions of polyesters or copolyesters containing free-functional acid groups. Corona discharge treatment of the polyester or copolyester layers is disclosed for direct adhesion to photographic emulsions or indirect adhesion via a polymeric sub and/or gelatin sub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.