Electric cells

Abstract

Abstract ELECTRIC CELLS ARE PROVIDED AT LEAST ONE PARTITIONING MEMBRANE, AT LEAST ONE MEMBRANE CONSISTING ESSENTIALLY OF A COPOLYMER DERIVED FROM AT LEAST TWO, MONOMERS, ONE OF WHICH IS ACRYLONITRILE AND ONE OF WHICH, IS AN OLEFINICALLY UNSATURATED MONOMER CONTAINING A SULPHONIC ACID GROUP WHICH MAY BE SALIFIED, THE LATTER MONOMER BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.4 AND ABOUT 2 MILLIMOLS PER GRAM OF COPOLYMER AND HAVING THE FORMULA: H-O3S-A-C(-R)=C(-R)2 IN WHICH EACH R RADICAL, WHICH MAY BE THE SAME OR DIFFERENT, REPRESENTS HYDROGEN OR AN ALKYL RADICAL OF UP TO 4 CARBON ATOMS, AND A REPRESENTS: (I) A DIVALENT WHOLLY HYDROCARBON GROUP, THE FREE VALENCIES OF WHICH ARE CARRIED BY A WHOLLY ALIPHATIC, SATURATED OR UNSATURATED, STRAIGHT OR BRANCHED CHAIN RADICAL OR BY AN AROMATIC NUCLEUS, OR ONE OF THE FREE VALENCIES OF WHICH IS CARRIED BY AN ALIPHATIC CARBON ATOM AND THE OTHER FREE VALENCY OF WHICH IS CARRIED BY AN AROMATIC CARBON ATOM, OR (II) A -O-A''- OR -S-A''- GROUP, IN WHICH A'' REPRESENTS A GROUP AS DEFINED UNDER (I), OR (III) A DIVALENT RADICAL CONSISTING OF ALIPHATIC AND/OR AROMATIC GROUPS LINKED TO ONE ANOTHER BY OXYGEN OR SULPHUR ATOMS, THE FREE VALENCIES OF WHICH ARE CARRIED BY ALIPHATIC AND/OR AROMATIC CARBON ATOMS, OR (IV) A GROUP AS DEFINED UNDER (I), (II) OR (III) WHEREIN ONE OR MORE OF THE CARBO ATOMS THEREOF IS SUBSTITUTED.

Inventors

• 👤 X Marze

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