Siloxane-grafted membranes

Patent · Sat Dec 31 23:00:00 EST 1988

OSTI ID:867159

Friesen, Dwayne T ^[1]; Obligin, Alan S ^[2]

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1. Bend, OR
2. Catonville, MD

Composite cellulosic semipermeable membranes are disclosed which are the covalently bonded reaction product of an asymmetric cellulosic semipermeable membrane and a polysiloxane containing reactive functional groups. The two reactants chemically bond by ether, ester, amide or acrylate linkages to form a siloxane-grafted cellulosic membrane having superior selectivity and flux stability. Selectivity may be enhanced by wetting the surface with a swelling agent such as water.

• Research Organization: Bend Research Inc
• DOE Contract Number: AC03-84ER80159
• Assignee: Bend Research, Inc. (Bend, OR)
• Patent Number(s): US 4877528
• OSTI ID: 867159
• Country of Publication: United States
• Language: English

Related Subjects

/210/95/96/
acrylate
agent
amide
asymmetric
asymmetric cellulosic
bond
bonded
cellulosic
cellulosic semipermeable
chemically
chemically bond
composite
containing
containing reactive
covalently
covalently bonded
disclosed
enhanced
ester
flux
form
functional
linkages
membrane
membranes
permeable membrane
permeable membranes
polysiloxane
product
reactants
reaction
reaction product
reactive
reactive functional
selectivity
semipermeable
semipermeable membrane
semipermeable membranes
siloxane-grafted
stability
superior
surface
swelling
water
wetting