Microporous membrane, method of manufacture, and method of use

Details Microporous membrane, method of manufacture, and method of use Microporous membrane, method of manufacture, and method of use

1991-05-15

1992-07-07

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210490, 21050038, B01D 7156

Patent

active

051280418

ABSTRACT:
Microporous membranes having positive zeta potentials in alkaline pH are provided by radiation grafting diallyldimenthylammonium dimethyl ammonium chloride to the surraces of a microporous, polyamide membrane using ionizing radiation. The membranes have particular use in microelectronics manufacture where quick rinse up times with ultrapure water are required.

REFERENCES:
patent: 3698931 (1972-11-01), Horowitz
patent: 3862059 (1975-01-01), Greco et al.
patent: 4431545 (1984-02-01), Pall et al.
patent: 4693985 (1987-09-01), Degen et al.
patent: 4702840 (1987-11-01), Degen et al.
patent: 4758239 (1988-07-01), Yeo et al.
patent: 4968533 (1990-11-01), Gsell

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