Hydrophilic microporous polyolefin membrane

Details Hydrophilic microporous polyolefin membrane Hydrophilic microporous polyolefin membrane

1992-04-24

1993-05-11

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050035, B01D 7178

Patent

active

052098494

ABSTRACT:
A hydrophilic microporous membrane, is provided comprising a hydrophobic membrane substrate exemplified by a polyolefin or partially fluorinated polyolefin membrane. A process is also provided for preparing a hydrophilic membrane by grafting a water soluble polymer to the hydrophobic membrane substrate surface by irradiation means, e.g., ultraviolet irradiation. The invention further concerns a method for making the membrane and process means for filtering a fluid through such membrane.

REFERENCES:
patent: 4256782 (1981-03-01), Tazuke et al.
patent: 4288467 (1981-09-01), Machi et al.

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