Semipermeable thin-film membranes comprising siloxane, alkoxysilyl and aryloxysilyl oligomers and copolymers
Novel semipermeable membranes and thin film composite (TFC) gas separation membranes useful in the separation of oxygen, nitrogen, hydrogen, water vapor, methane, carbon dioxide, hydrogen sulfide, lower hydrocarbons, and other gases are disclosed. The novel semipermeable membranes comprise the polycondensation reaction product of two complementary polyfunctional compounds, each having at least two functional groups that are mutually reactive in a condensation polymerization reaction, and at least one of which is selected from siloxanes, alkoxsilyls and aryloxysilyls. The TFC membrane comprises a microporous polymeric support, the surface of which has the novel semipermeable film formed thereon, preferably by interfacial polymerization.
- Research Organization:
- Bend Research Inc
- DOE Contract Number:
- AC03-84ER80159
- Assignee:
- Bend Research, Inc., OR (United States)
- Patent Number(s):
- US 4781733; A
- Application Number:
- PPN: US 7-074247
- OSTI ID:
- 7017862
- Resource Relation:
- Patent File Date: 16 Jul 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CARBON DIOXIDE
MEMBRANE TRANSPORT
HYDROCARBONS
HYDROGEN
HYDROGEN SULFIDES
MEMBRANES
DESIGN
METHANE
NITROGEN
OXYGEN
WATER VAPOR
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
SEPARATION EQUIPMENT
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
SULFIDES
SULFUR COMPOUNDS
VAPORS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes