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):
- A; US 4781733
- Application Number:
- PPN: US 7-074247
- OSTI ID:
- 7017862
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DESIGN
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MEMBRANE TRANSPORT
MEMBRANES
METHANE
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POLYMERS
SEPARATION EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
VAPORS
WATER VAPOR