Photographic coated film bases
US4329423A · kind A · utility
2Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Oct 22, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/136
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improvements in coated film bases. Photobase comprising a film support, e.g. a polyethylene terephthalate film, having a copolymeric subbing layer comprising a copolymer of acrylic acid or an alkyl ester thereof/methacrylic acid or an alkyl ester thereof/itaconic acid or itaconic anhydride, e.g. an ethyl acrylate/methyl methacrylate/itaconic acid copolymer, and containing free itaconic acid, half ester or anhydride which is directly adherent to light-sensitive photographic emulsions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.