Photographic film subbing layer comprising vinylidene chloride and itaconic acid or ester copolymer
US4213783A · kind A · utility
4Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Subbing layers in photographic films especially for polyester such as polyethylene terephthalate film supports comprise copolymers of 75 to 90 mole % of vinylidene chloride, 2 to 16 mole % of acrylonitrile or methacrylonitrile or a copolymerizable ester, e.g. methyl acrylate or vinyl acetate, 0.5 to 5 mole % of itaconic acid or a monoalkyl ester of itaconic acid wherein the alkyl group contains 1 to 4 carbon atoms and 3 to 8 mole % of acrylamide, methacrylamide or N-methylolacrylamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.