Photographic elements comprising antistatic film bases
US5484693A · kind A · utility
1Cited by
3References
7Claims
0Family size
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Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/89
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Polymeric film bases at least one side of which is coated with an antistatic layer comprising the reaction product of (a) a water-soluble, electrically conductive polymer containing carboxylic groups and (b) a polyfunctional epoxide crosslinking agent, and photographic elements comprising said film bases, wherein said conductive polymer is a copolymer of a water soluble salt of styrene sulfonic acid and maleic acid having a weight average molecular weight of 100,000 to 350,000 and a water soluble salt of styrene sulfonic acid to maleic acid molar ratio of at least 2:1 up to 9:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.