METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES

Details METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES

1972-08-01

1976-04-06

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

210500M, 260 308DS, 260 326N, 260 326R, 260 326PQ, 260 47CP, 260 78SC, 260 78TF, 260830P, 260857L, 260857R, C08J 900

Patent

active

039488233

ABSTRACT:
Novel cross-linked interpolymer membranes of substantially improved efficiency and durability are prepared from a co-mixture of a hydrophilic polymer of [1, .omega.-alkylene(2,6-diketopiperazine)-1,4-dicarboxamide] and a hydrophobic polymer such as polyvinylidene fluoride, by dissolving these polymers in a suitable solvent, forming films of suitable thickness from the solution and thereafter preferably crosslinking the dissolved mixture.

REFERENCES:
patent: 3719640 (1973-03-01), Lee et al.
patent: 3728348 (1973-04-01), Lee et al.

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