Eastman-kodak Company

Hyman L Cohen

Gerald A Campbell

Lewis R Hamilton

Hugh G McGuckin

George Villard

Ignazio S Ponticello

Frederick R Koeng

James R King

Lewis M Minsk

There is disclosed a composition and element, comprising a diazo resin and a mordant for anionic dyes that is compatible with the resin. The element of the invention is suitable for dye immersion and dye transfer to a mordanted receiver.

Continuous-tone dyed diazo imaging process

Continuous-tone dyed diazo imaging elements

A photographic element comprising a support, a layer containing certain photographically useful and/or active fragments and a layer containing a dye mordant composition comprising a polymer having recurring units of the formula selected from the group consisting of: ##STR1## wherein: R.sup.2 is hydrogen or alkyl;

Photographic film units containing a polymeric mordant which covalently

Polymers comprising quaternary nitrogen atoms and at least two aromatic nuclei in the polymer cation for each quaternary nitrogen atom are described. In one embodiment at least 1/3 of the units of said polymer comprise quaternary nitrogen atoms. In another embodiment polymers comprising at least two aromatic nuclei in the polymer cation, such as aryl groups, for each quaternary nitrogen atom can be used in photograhic elements to provide excellent mordants for dyes.

Novel polymers and photographic elements containing same

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: ##SPC1## 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; R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of carbocyclic groups and alkyl groups; M.sup.- 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.

Photographic elements containing cross-linked mordants and processes of

A water-insoluble polymer comprising repeating units at least 1/3 of said repeating units having the formula: ##SPC1## Wherein R.sup.1 and R.sup.2 are hydrogen or alkyl and R.sup.3, R.sup.4 and R.sup.5 are alkyl groups wherein the total number of carbon atoms in R.sup.3, R.sup.4 and R.sup.5 is at least 12 and X.sup.-is an anion; is useful in dye mordant compositions in photographic elements. Preferred dye mordants comprise copolymers with styrene or methyl methacrylate.

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Rochester, NY, United States of America

Hyman L Cohen