Photographic film with subbing layers
Abstract
Abstract IMPROVED ADHERENCE IS OBTAINED FOR SHEET MATERIAL HAVING A HYDROPHOBIC FILM SUPPORT OR BASE, SUCH AS A HYDROPHOBIC CELLULOSE ESTER OR POLYESTER, BY THE COMBINATION OF A VINYL POLYMER SUBBING LAYER ARRANGED DIRECTLY ON THE HYDROPHOBIC SUPPORT, THE SUBBING LAYER BEING FORMED OF A COPOLYMER CONTAINING AT LEAST 45% BY WEIGHT OF VINYLIDENE CHLORIDE AND/OR VINYL CHLORIDE MONOMER ALONG WITH A MINOR AMOUNT OF A HYDROPHILIC VINYL MONOMER WITH THE BALANCE BEING CONSTITUTED BY ANY OTHER VINYL MONOMER, AND SUPERIMPOSED UPON THE VINYL SUBBING LAYER A LAYER CONTAINING A MIXTURE OF GELATIN WITH A COPOLYMER OF BUTADIENE AND A VINYL MONOMER CONTAINING 30-70% BY WEIGHT OF BUTADIENE, THE RATIO OF THE GELATIN TO THE BUTADIENE COPOLYMER BEING IN THE RANGE OF 1:3 TO 2:1 BY WEIGHT. AN ADDITIONAL LAYER CAN BE APPLIED OVER THE GELATIN/COPOLYMER LAYER AND CONSTITUTED BY SUCH INGREDIENTS AS ARE DESIRABLE FOR THE PARTICULAR UTILITY OF THE RESULTANT SHEET MATERIAL, SUCH AS LIGHT-SENSITIVE SILVER HALIDE EMULSION PHOTOGRAPHIC LAYERS.
Inventors
- 👤 J Priem
- 👤 Paesschen A Van
- 👤 Gossum L Van
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |