Asymmetrical ultrafiltration membrane on the basis of cellulose

Details Asymmetrical ultrafiltration membrane on the basis of cellulose Asymmetrical ultrafiltration membrane on the basis of cellulose

1979-04-10

1981-03-03

Hart, Charles N.

Liquid purification or separation

Filter

Material

210506, 264 41, B01D 3918

Patent

active

042539633

ABSTRACT:
An asymmetrical ultrafiltration membrane based on cellulose triacetate, optionally substituted by up to 30% cellulose diacetate, is made wettable without tendency to embrittlement or shrinkage by adding hydrophobic synthetic silicic acid to the casting solution.

REFERENCES:
patent: 3855133 (1974-12-01), Roehsler
patent: 3862030 (1975-01-01), Goldberg
patent: 4147622 (1979-04-01), Nussbaumer
patent: 4188418 (1980-02-01), Livingston
Hackh's Chemical Dictionary, Fourth Edition, J. Grant Editor, McGraw Hill Book, Co. N.Y. 1973, p. 610.
The Condensed Chemical Dictionary, Ninth Edition, G. Hawley van Nostrand Reinhold Co. N.Y. 1977, pp. 773, 774.
Rubber Technology and Manufacture, C. Blow Editor, CRC Press, Cleveland, Ohio, 1971, p. 193.

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