Photographic support material with a backlayer containing coarse

Details Photographic support material with a backlayer containing coarse Photographic support material with a backlayer containing coarse

1997-04-22

1998-05-26

Le, H. Thi

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428339, 428341, 428342, 428355AC, 428404, 428451, 428452, 430523, 430529, B32B 516, G03C 185

Patent

active

057562008

ABSTRACT:
The invention relates to a photographic support material with a backlayer and to a coating composition for producing this backlayer. The layer is distinguished by excellent writing properties with pencils and is free of contaminations by aged developing baths. It is composed of carboxylated acrylate copolymer, organic polyacid, coarse-grained silica, thickener and, preferably, colloidal aluminium-modified silica.

REFERENCES:
patent: 5064717 (1991-11-01), Suzuki et al.
patent: 5104779 (1992-04-01), Saverin et al.
patent: 5232824 (1993-08-01), Saverin et al.
patent: 5466536 (1995-11-01), Berner et al.
English translation of Japanese Patent Publication 63 004,231 patented on n. 1988.

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