Ultrathin-skinned asymmetric membranes by immiscible solvents treatment

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867194

Friesen, Dwayne T ^[1]; Babcock, Walter C ^[1]

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1. Bend, OR

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. (Bend, OR)
• Patent Number(s): US 4883593
• OSTI ID: 867194
• Country of Publication: United States
• Language: English

Related Subjects

ultrathin-skinned
asymmetric
membranes
immiscible
solvents
treatment
improved
semipermeable
fluid
separation
useful
gas
vapor
liquid
separations
disclosed
prepared
substantially
filling
pores
cellulosic
finely
porous
layer
water
organic
followed
contacting
semipermeable membranes
asymmetric membranes
porous layer
membranes useful
semipermeable membrane
permeable membrane
organic liquid
separation membrane
water immiscible
separation membranes
cellulosic semipermeable
fluid separation
substantially filling
permeable membranes
finely porous
immiscible organic
miscible solvents
substantially fill
asymmetric cellulosic
/210/96/264/