Process for producing semipermeable membrane

Details Process for producing semipermeable membrane Process for producing semipermeable membrane

1985-01-30

1985-10-22

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

2105002, 264 41, 521 53, C08J 936

Patent

active

045487693

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: 4265959 (1981-05-01), Sano et al.
patent: 4268662 (1981-03-01), Sano
patent: 4323627 (1982-04-01), Joh
patent: 4409162 (1983-10-01), Takao
patent: 4486549 (1984-12-01), Matsumoto

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