Process of producing a composite membrane

Details Process of producing a composite membrane Process of producing a composite membrane

1989-07-25

1990-07-03

Kight, III, John

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 28, 521 64, 524465, 524475, 427244, 427245, 427246, 427384, 21050041, 210650, 210653, 210654, C08D 520

Patent

active

049391801

ABSTRACT:
A process for producing a composite membrance in which a sulphonated polymer is appled to the surface of a porous substrate, treating the polymer, in situ, on the substrate with cations of a polyvalent metal and converting the treated coating into a water insoluble layer on the support. The polyvalent metal may preferably by aluminum or chromium.

REFERENCES:
patent: 4054707 (1977-10-01), Quentin
patent: 4714725 (1987-12-01), Hendy et al.
patent: 4866099 (1989-09-01), Hendy

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