Supported semi-permeable membranes

Details Supported semi-permeable membranes Supported semi-permeable membranes

1974-11-06

1976-04-13

Spear, Jr., Frank A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210500M, B01D 2504

Patent

active

039502554

ABSTRACT:
Supported semi-permeable membranes are prepared by coating a membrane-forming solution directly on a membrane support, said membrane support comprising a woven fabric selected from (1) a woven fabric made of mixed yarns and formed by employing as a part of the weft and/or warp yarns a yarn composed of a component soluble in a solvent used for forming the membrane-forming solution, (2) a woven fabric composed of a blended yarn including as one blend component fibers composed of a component soluble in a solvent used for forming the membrane-forming solution and (3) a woven fabric having its surface coated with a polymer soluble in a solvent used for forming the membrane-forming solution.

REFERENCES:
patent: 2197805 (1940-04-01), Lovett
patent: 3556305 (1971-01-01), Shorr
patent: 3556992 (1971-01-01), Massucco
patent: 3762566 (1971-08-01), DelPico
patent: 3894166 (1975-07-01), Brown et al.

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