Ultrathin-skinned asymmetric membranes by immiscible solvents treatment

Patent · Tue Nov 28 00:00:00 EST 1989

OSTI ID:7073875

Friesen, D T; Babcock, W C

Improved semipermeable asymmetric fluid separation membranes useful in gas, vapor and liquid separations are disclosed. The membranes are prepared by substantially filling the pores of asymmetric cellulosic semipermeable membranes having a finely porous layer on one side thereof with a water immiscible organic liquid, followed by contacting the finely porous layer with water.

• Research Organization: Bend Research Inc
• DOE Contract Number: AC03-84ER80159
• Assignee: Bend Research, Inc., OR (United States)
• Patent Number(s): US 4883593; A
• Application Number: PPN: US 7-263368
• OSTI ID: 7073875
• Resource Relation: Patent File Date: 27 Oct 1988
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SUPPORTED LIQUID MEMBRANES
FABRICATION
GASES
LIQUIDS
MEMBRANE TRANSPORT
POROSITY
FLUIDS
MEMBRANES
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
400105 - Separation Procedures