Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1977-12-12
1980-04-22
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
428500, 428510, 428520, 428522, 430957, 430544, 430644, 430566, G03C 140, G03C 554, G03C 148, B44D 109
Patent
active
041993624
ABSTRACT:
In a photographic element for the color diffusion transfer process including a neutralizing system for reducing the pH of an aqueous alkaline processing solution which comprises a neutralizing layer and a timing layer, the improvement which comprises the timing layer comprising a polymer latex which is produced by emulsion polymerization of (1) each of (A) at least one monomer selected from the group consisting of ethylene-type monomers having at least a free carboxylic acid group, a free sulfonic acid group or a free phosphoric acid group or a salt thereof and (B) at least one monomer selected from the group consisting of monomers represented by the following general formula (I) ##STR1## wherein X is a hydrogen atom, a methyl group or a --COOR.sup.1 group; Y is a hydrogen atom, a methyl group or a --(CH.sub.2).sub.n COOR.sup.2 group; Z is an aryl group, a --COOR.sup.3 group or a ##STR2## group; R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, each represents an aliphatic group or an aryl group; and n is an integer of 0 to 3, or (2) each of (A) at least one monomer selected from the group consisting of the ethylene type monomers described above, (B) at least one monomer selected from the group consisting of monomers represented by the general formula (I) above, and (C) at least one monomer selected from the group consisting of monofunctional or polyfunctional unsaturated monomers other than those monomers described in (A) and (B) above which are copolymerizable with the monomers described in (A) and (B) above and selected from the group consisting of acrylamides, methacrylamides, vinyl ethers, vinyl ketones, allyl compounds, olefins, vinyl heterocyclic compounds, unsaturated nitriles and polyfunctional monomers.
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Karino Yukio
Katoh Kazunobu
Sakaguchi Shinji
Yoshida Takashi
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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