DE2118116

1331715 Reverse-osmosis membrane WESTINGHOUSE ELECTRIC CORP 19 April 1971 [15 April 1970(2)] 24193/71 Heading B5B [Also in Division B1] The feed bores 12 of an open-pore support module 11 are lined with reverse-osmosis membranes by introducing a solution containing an organic solvent, a polymeric fi...

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Bibliographische Detailangaben
Hauptverfasser:	EMSWILLER, JAMES L., BETHEL PARK, PA., US, STANA, REGIS R., MURRYSVILLE, PA., US, CALDERWOOD, ANDREW S., MONROEVILLE, PA., US, CHAMBERLIN, RICHARD M., MCKEESPORT, PA., US
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SEPARATION SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Zusammenfassung:	1331715 Reverse-osmosis membrane WESTINGHOUSE ELECTRIC CORP 19 April 1971 [15 April 1970(2)] 24193/71 Heading B5B [Also in Division B1] The feed bores 12 of an open-pore support module 11 are lined with reverse-osmosis membranes by introducing a solution containing an organic solvent, a polymeric film-forming material selected from cellulosic esters and ethers, and a swelling agent into the bores, moving casting bobs 15 through the bores to form films of solution therein, drying the films by exposure to air and then contacting them with a leaching liquid. The solution may be drawn into the ends of the bores by inverting the module into the solution and applying a vacuum, and the bobs may be driven through the bores by gas pressure. Many possible components of the solution are specified. The module may be of resin-bonded sand.