Process for providing a matt surface on a photographic material

Details Process for providing a matt surface on a photographic material Process for providing a matt surface on a photographic material

1982-09-17

1984-05-08

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430950, 430523, G03C 178

Patent

active

044475250

ABSTRACT:
A matt surface can be provided on a photographic material comprising a support base, one or more light-sensitive gelatin silver halide emulsion layers and an outer non-light-sensitive gelatin layer coated on said layers if discrete particles, insoluble in water and substantially soluble in aqueous alkaline medium, of a carboxyl group containing copolymer are introduced into said outer layer. The particles, of a diameter between 0.5 and 4 micron, are introduced into the coating composition of the outer layer as a dispersion of a methacrylic acid and ethylmethacrylate copolymer containing 20 to 50 percent by weight of methacrylic acid, which dispersion is obtained by dispersing in an aqueous solution of a hydrophilic colloid a solution of said copolymer in ethylacetate or water-including ethylacetate.

REFERENCES:
patent: 3411907 (1968-11-01), Whitmore et al.
patent: 3811924 (1974-09-01), Gallagher et al.
patent: 4142894 (1979-03-01), Hori et al.
patent: 4266010 (1981-05-01), Nagatomo et al.

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