Semipermeable composite membrane, a process for the manufacture

Details Semipermeable composite membrane, a process for the manufacture Semipermeable composite membrane, a process for the manufacture

1992-02-21

1993-12-28

Kight, III, John

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

Synthetic resins

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

21050027, 21050035, 21050038, 21050042, 210654, 427244, 427245, 521 64, 525293, 525296, 5253294, 5253307, 528345, 528350, B01D 6912, C08F 2000

Patent

active

052740471

ABSTRACT:
Semipermeable composite membrane, with a porous carrier substrate, whereby said carrier substrate is provided with a polymer network obtained by polycondensation, especially interfacial polymerization, which is built up of at least one reactive polyfunctional monomer or oligomer or prepolymer or polymer, and at least one acid halide containing polymer.
The specialty of this semi-permeable composite membrane consists therein that the acid halide containing polymere itself is built up of one or more vinyl containing monomers.
The acid halide containing polymer is generally a copolymer of acryloylchloride H.sub.2 C.dbd.CHCOCl or methacryloyl chloride H.sub.2 C.dbd.C(CH13)COCl with one or more vinyl containing monomers.
Usually the vinyl containing monomer is an acrylate or an acrylamide or a mixture thereof.
The invention further relates to a process for the manufacture of such membranes, as well as a method for the separation of components in an organic liquid phase or in the vapor phase using a semipermeable composite membrane according to the invention.

REFERENCES:
patent: 4721568 (1988-01-01), Buys et al.
patent: 5039421 (1991-08-01), Linder et al.
Abstract of Swiss Patent No. 470,430 (L'Oreal); English Language Abstract of Patents Abstracts of Japan, vol. 13, No. 190.
An English Abstract of Patents Abstracts of Japan, vol. 3, No. 95; Copy of Swiss Patent No. 470,430.

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