Method of increasing the viscosity of photographic coating solut

Details Method of increasing the viscosity of photographic coating solut Method of increasing the viscosity of photographic coating solut

1976-12-01

1979-08-28

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

96114, 961144, 961145, 96 67, 260117, C09H 700, G03C 130, G03C 131, G03C 138

Patent

active

041660501

ABSTRACT:
A method of increasing the viscosity of photographic coating solutions which comprises adding polymers having therein the repeating unit represented by the following formula (but having a maleic acid content of more than about 40% by mol' ##STR1## wherein R represents a hydrogen atom or a t-butyl group, and M.sub.1 and M.sub.2 each represents a cation, which may be identical or different from each other, to gelatin containing photographic coating solutions.

REFERENCES:
patent: 3079837 (1963-03-01), Theilemann
patent: 3811889 (1974-05-01), Endou et al.
patent: 3811897 (1974-05-01), Babbit et al.
patent: 3877942 (1975-04-01), Nagatomo et al.
patent: 3877946 (1975-04-01), Tsuji et al.
patent: 3923517 (1975-12-01), Yamamoto et al.
patent: 3926869 (1975-12-01), Horie et al.
patent: 4033772 (1977-07-01), Sprung et al.
patent: 4119463 (1978-10-01), Iguchi et al.
Polymer Handbook, 2nd Ed. 1975, IV-1, IV-2, Brandrup et al.
Chem. Abstracts, vol. 77, 1972, Eda et al., 107714c.

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