Semipermeable membrane

Details Semipermeable membrane Semipermeable membrane

1979-09-20

1981-09-29

Nielsen, Earl A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525513, 525523, 525524, 525930, 2105002, C08G 5914, C02F 144

Patent

active

042924170

ABSTRACT:
A semipermeable membrane composed of a water-insoluble, cross-linked, membrane-forming polymer (hereinafter referred to as "polymer (II)") which is obtained by partially converting the hydroxyl groups of a polymer represented by the following formula (hereinafter referred to as "polymer (I)"): ##STR1## wherein R and R' are halogen, nitro, methyl or ethyl,

REFERENCES:
patent: 3994860 (1976-11-01), Brousse
patent: 4054707 (1979-10-01), Quentin

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