Process for producing semipermeable membrane

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...

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20415914, 204165, 2105002, 528492, C08F 600

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active

045117110

ABSTRACT:
A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a semipermeable membrane of acrylonitrile polymer containing 40-100% by mole of acrylonitrile in a solution of an amine and/or an alkali, or casting a solution of said polymer containing an amine and/or an alkali to prepare a semipermeable membrane, and optionally, treating the semipermeable membrane thus obtained with plasma.

REFERENCES:
patent: 3127233 (1964-03-01), Lowes
patent: 3615024 (1971-10-01), Michaels
patent: 4268662 (1981-03-01), Sano
patent: 4323627 (1982-04-01), Joh
patent: 4409162 (1983-10-01), Takao

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