Microporous membrane made of non-crystalline polymers and method

Details Microporous membrane made of non-crystalline polymers and method Microporous membrane made of non-crystalline polymers and method

1995-01-25

1998-05-05

Fortuna, Ana

Liquid purification or separation

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Material

21050039, 21050035, 21050041, 264 41, 264 49, B01D 3321, B29C 6500

Patent

active

057469164

ABSTRACT:
A microporous membrane made of a non-crystalline polymer having, within its wall, microfibrils and slit-like micropores which are oriented in the lengthwise direction of the membrane, said slit-like micropores communicating from one surface to the other surface of the membrane, and forming a stacked construction. This membrane has a high flux value of AFR and WFR, excellent heat-, solvent-, and pressure-resistance, and a high mechanical strength, and does not contain any undesirable materials which eluate during use. This membrane is thus useful as a multi-purpose separation membrane, such as for medical uses, food industries, purification of water or air, and the separation of hot liquids.

REFERENCES:
patent: 3407249 (1968-10-01), Landi
patent: 4356234 (1982-10-01), Kumakawa et al.
patent: 4867881 (1989-09-01), Kinzer
patent: 5084173 (1992-01-01), Nitadori et al.

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