Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-10-17
1979-06-19
Welsh, M. J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260823, 260874, 429248, 429254, C08L 110, C09K 300
Patent
active
041586492
ABSTRACT:
A polymeric membrane composed of a homogenous mixture of (1) a hydrophilic esin which is (a) partially acetylated cellulose in which from about 50 to less than 100 percent of the hydroxyl groups are acetylated, (b) polyvinyl acetate, (c) hexadimethrine bromide, or mixtures thereof, and (2) a polyphenylquinoxaline of the formula ##STR1## WHEREIN X IS A DIRECT BOND, ##STR2## and Ar is m-phenylene, p-phenylene, or ##STR3## wherein z is a direct bond, ##STR4## and wherein n is a value such that the polyphenylquinoxaline has an inherent viscosity of from about 0.5 to about 2.5 dl./g as a 0.5 g in 100 ml solution in 98 percent sulfuric acid at about 30.degree. C. These polymeric membranes are used as separators in alkaline cells such as silver-zinc cells.
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Hergenrother et al., J. Polymer Sci., 5, 1967, pp. 1453-1466.
Angres Isaac
Duffy James V.
Matesky Sol J.
Branning A. L.
Johnson R. D.
Sciascia R. S.
The United States of America as represented by the Secretary of
Welsh M. J.
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