Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1978-10-02
1980-10-21
Bowers, Jr, Charles L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430216, 430221, 430236, 430237, G03C 140, G03C 554, G03C 700
Patent
active
042295165
ABSTRACT:
A composition comprising a mixture of (1) from 5 to 95 percent by weight of a copolymer comprising from 55 to 85 percent by weight of vinylidene chloride, 5 to 35 percent by weight of an ethylenically unsaturated monomer, and 0 to 20 percent by weight of an ethylenically unsaturated carboxylic acid, and (2) from 5 to 95 percent by weight of a polymeric carboxy-ester-lactone, is useful as a temporary barrier between reactants in photographic products. The barrier is particularly useful as a process timing layer in color image transfer film units.
REFERENCES:
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patent: 3785815 (1974-01-01), Avtges et al.
patent: 4009030 (1977-02-01), Abel
patent: 4056394 (1977-11-01), Hannie
patent: 4061496 (1977-12-01), Hannie et al.
patent: 4148653 (1979-04-01), Von Bonin et al.
Research Disclosure, "Neutralizing Materials in Photographic Elements", #12331, vol. 123, 7/1974.
Bowers, Jr Charles L.
Eastman Kodak Company
Rosenstein Arthur H.
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