Polyelectrolytes

Details Polyelectrolytes Polyelectrolytes

1977-01-31

1978-10-03

Taylor, Hosea E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260859R, 260859PV, 260895, 526240, 526 49, 526 50, 526265, 526287, 528 46, 528273, C08L 3320

Patent

active

041184394

ABSTRACT:
Ionically crosslinked polymers which are soluble in a liquid organic medium and which correspond to the general formula: ##STR1## in which: the symbol N.sym. represents a quaternary nitrogen-containing group; the symbol ##STR2## REPRESENTS A MACROMOLECULAR CHAIN CARRYING GROUPS WHICH ARE CAPABLE OF BEING LINKED, VIA A COVALENT BOND, TO -SO.sub.3 .crclbar. groups; the symbol ##STR3## REPRESENTS A MACROMOLECULAR CHAIN CARRYING GROUPS WHICH CAN GIVE RISE TO THE FORMATION OF N.sym. groups, the symbol ##STR4## INDICATING THAT THE N.sym. groups are linked to the macromolecular chain by at least one covalent bond, and the chains ##STR5## CONSIDERED TOGETHER, DO NOT CONTAIN OPPOSITELY CHARGED GROUPS WHICH ARE CAPABLE OF FORMING INTER-CHAIN COVALENT BONDS, THE RATIO N/M IS BETWEEN 0.1 AND 10; AND THE NATURE OF THE UNITS FORMING THE MACROMOLECULAR CHAINS AND THE VALUES OF N AND M BEING SUCH THAT A POLYMER OF FORMULA (I.sub.1) ##STR6## IN WHICH M represents a hydrogen ion or an alkali metal or alkaline earth metal ion and x is 1 or 2, and a polymer of formula (I.sub.2) ##STR7## IN WHICH A represents a hydroxyl radical or the anion of an inorganic or organic acid of formula AH.sub.y, y being equal to 1, 2 or 3, are both insoluble in water but soluble in a common liquid organic medium are provided having properties making them suitable for use as, inter alia, membranes for ultrafiltration, dialysis and osmosis.

REFERENCES:
patent: 3271496 (1966-09-01), Michaels
patent: 3467604 (1969-09-01), Michaels
patent: 3558744 (1971-01-01), Michaels et al.
patent: 3565973 (1971-02-01), Michaels
patent: 3579613 (1971-05-01), Schaper et al.
patent: 3635846 (1972-01-01), Splitz

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