Method for the production of an asymmetric semipermeable membran

Details Method for the production of an asymmetric semipermeable membran Method for the production of an asymmetric semipermeable membran

1990-09-06

1992-05-12

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524205, 524465, 524475, 524592, 521 27, 521 64, 528171, 528381, 528382, 528388, C08J 308, C08L 8106, C08L 7104, C08K 515

Patent

active

051128926

ABSTRACT:
A polymer solution contains a sulphonated polyarylethersulphone in a solvent mixture containing at least three components, where the solvent mixture has a delta-H in the range from 3 to 8.5; a delta-P in the range from 4 to 8 and a delta-D in the range 7.2 to 9.5 and each component of the solvent mixture is a liquid or low melting solid which is a non-solvent or poor solvent for the sulphonated polyarylethersulphone, and at least one of the components satisfies at least one of the conditions:

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D. R. Lloyd et al; ACS Symposium Series 153, Synthetic Membranes, vol. 1, Ed A. F. Turbak, 1981, 327-350; Poly(Aryl Ether) Membranes for Reverse Osmosis.
D. R. Lloyd et al; Desalination, 1983, 46, 327-334 Asymmetric membrane Preparation from non-solvent Casting Systems.
D. R. Lloyd et al; A report prepared for ICI; May 1, 1984; Phase Inversion Preparation of Sulphonated Poly(Ether Sulphone) Asymmetric Membranes.
D. R. Lloyd et al; Polym. Mater, Sci. Eng., 50, Apr. 1984, 152-155; Asymmetric Membrane Preparation from Solventless Casting Systems.
D. R. Lloyd et al; ASC polym. Mater, Sci. Eng., 51, 1984, 713-717; Use of the Three Component Solubility Parameter in Asymmetric Phase Inversion Membrane Preparation.
D. R. Lloyd et al; Journal of Membrane Science, 985, 22, 1-2; Phase Inversion Sulphonated Polysulphone Membranes.
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