Molecular grafting to energetically treated polyesters to promote adhesion of gelatin-containing layers
US5700577A · kind A · utility
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16References
4Claims
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Key dates
| Filing date | Apr 24, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Apr 24, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a biaxially oriented polyester film support in which the surface has been subjected to an energetic treatment to produce amine groups on the polyester surface. The treated surface is then coated with a dilute amine reactive hardener solution. After drying the hardener solution a photographic emulsion is coated to the surface. The resulting film element has better adhesion of the photographic emulsion after photoprocessing than previous known methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.