C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
96/26, 400/9057,
C09B 65/00 (2006.01) C08F 8/40 (2006.01) C08F 8/44 (2006.01) G03C 1/40 (2006.01) G03C 8/56 (2006.01)
Patent
CA 1049676
Abstract A process for preparing photographic elements comprising a support, a layer containing an acid dye or acid dye precursor and a layer containing a dye mordant composition, said process comprising coating on a support with a substantially aqueous dispersion of a polymer containing units according to the formula: Image wherein A represents units of an addition-polymerizable monomer containing at least 2 ethylenically-unsaturated groups; B represents units of a copolymerizable ethylenically unsaturated monomer; Q is N or P; R1, R2 and R3 are independently selected from the group consisting of carbocyclic groups and alkyl groups; M- is an anion and x is from about 0.25 to about 5 mole percent; y is from about 0 to about 90 mole percent and z is from about 10 to about 99 mole percent; and applying a layer containing acid dyes or acid dye precursors. The polymeric mordants are especially useful in diffusion transfer processes. - 1 -
217986
Campbell Gerald A.
Cohen Hyman L.
Hamilton Lewis R.
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