Process for the production of hydrophilic membranes

Details Process for the production of hydrophilic membranes Process for the production of hydrophilic membranes

1994-12-30

1996-08-06

Buttner, David

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

Synthetic resins

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

525189, 521 53, 264 48, 21050028, 21050038, 21050041, 21050042, 427 23, B01D 7144, B01D 7156, B01D 7168

Patent

active

055434657

ABSTRACT:
A process for the production of hydrophilic membranes using at least one hydrophobic polymer and polyvinyl pyrrolidone as a hydrophilic polymer, membrane-forming shaping of the polymers and immobilization of the polyvinyl pyrrolidone is characterized in that the polyvinyl pyrrolidone is immobilized on and/or in the membrane by treatment with an aqueous solution of peroxodisulphate in a hot condition. The solution of peroxodisulphate is kept substantially free of oxygen during immobilization by degassing the solution. The membranes are used for hemodialysis, hemodiafiltration and hemofiltration of blood.

REFERENCES:
patent: 5049275 (1991-09-01), Gillberg-LaForce et al.
patent: 5203997 (1993-04-01), Koyama
patent: 5376274 (1994-12-01), Muller
English Language Translation of Japanese Patent Application J04293528.

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