Coating process for composite reverse osmosis membranes

Details Coating process for composite reverse osmosis membranes Coating process for composite reverse osmosis membranes

1989-08-29

1990-12-25

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050023, 21050038, 21050041, 427245, B01D 6302

Patent

active

049800612

ABSTRACT:
A process for preparing reverse osmosis membranes is disclosed. A microporous hollow support fiber is passed through a solution of a monomer capable of undergoing condensation polymerization and such as m-phenylene diamine up through a capillary into a sedond less dense solution of a second monomer capable of undergoing condensation with said first monomer, such as trimesoyl chloride or cyclohexane-1,3,5-tricarbonyl chloride. The resulting fiber has a polymeric film deposited thereon which is effective as a reverse osmosis membrane.

REFERENCES:
patent: 3071806 (1963-01-01), Rosenthal
patent: 3121764 (1964-02-01), Macura
patent: 3228877 (1966-01-01), Mahon
patent: 4141942 (1979-02-01), Maehara
patent: 4230463 (1980-10-01), Henis et al.

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