US4652283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphenylene oxide membrane having chemically bonded coating
Assignee: Permea Inc
•
Filing: 1983-06-30
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Granted: 1987-03-24
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Expires: 2003-06-30
Abstract
Abstract A coated membrane for gas separations wherein the membrane is made up of an amine cross-linked poly(phenylene oxide) substrate membrane having about 1 to about 7 weight percent nitrogen and a coating on the substrate membrane. The coating is a polymer containing groups capable of reacting with amine groups at the surface of the substrate membrane to ionically or covalently bond the coating to the substrate.
Inventors
- 👤 Anthony Zampini
- 👤 Raymond F. Malon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:28
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0093; B01D69/00; B01D69/12; B01D69/1214; B01D71/00; B01D71/06; B01D71/52; B01D71/522; B01D71/5223; B01D2323/00; B01D2323/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A coated membrane for gas separations, comprising a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to ionically bond the coating to the substrate, said coating being ionically bonded to said substrate.
Claim 2
Dependent Claim
69 words
A coated membrane for gas separations, comprising a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to ionically bond the coating to the substrate, said coating being ionically bonded to said substrate.
Claim 3
Dependent Claim
15 words
The membrane of claim 1 wherein the coating polymer is a sulfonated poly(phenylene oxide) polymer.
Claim 4
Dependent Claim
22 words
The membrane of claim 2 wherein the coating polymer is a poly(phenylene oxide) polymer having --SO 3 H groups as a substituent.
Claim 5
Dependent Claim
15 words
The membrane of claim 2 wherein the polymer of the substrate membrane is poly(2,6-dimethyl-1,4-phenylene oxide).
Claim 6
Dependent Claim
44 words
The membrane of claim 4 wherein the polymer aryl groups have 3 and 5 positions linked to substituents selected from the group consisting of hydrogen, halogen, nitro, aliphatic hydrocarbons having 1 to 4 carbon atoms and acyl radicals having at least two carbon atoms.
Claim 7
Dependent Claim
34 words
The membrane of claim 1 wherein the coating is made up of 100 parts of dimethyl siloxane diol and 1 to 20 parts of a silicone compound containing epoxy, chloropropyl or isocyanato functional groups.
Claim 8
Dependent Claim
28 words
The membrane of claim 6 wherein the silicone compound is selected from the group consisting of glycidoxypropyl trimethoxy silane, chloropropyl trimethoxysilane, isocyanatopropyl triethoxysilane and 3,4-epoxycyclothexyl ethyl trimethoxy silane.
Claim 9
Dependent Claim
69 words
A coated membrane for gas separations, comprising a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to covalently bond the coating to the substrate, said coating being covalently bonded to said substrate.
Claim 10
Dependent Claim
69 words
A coated membrane for gas separations, comprising a. a cross-linked poly(phenylene oxide) polymer substrate membrane containing about 1 to about 7 weight percent nitrogen, and b. a coating on the substrate membrane, said coating being a polymer having groups capable of reacting with the amine groups in the polymer of the substrate membrane to covalently bond the coating to the substrate, said coating being covalently bonded to said substrate.
Claim 11
Dependent Claim
37 words
The membrane of claim 8 wherein the coating polymer is selected from the group consisting of a chloroacetylated poly(phenylene oxide) polymer, a benzyl halogenated aryl polymer and a silicone compound having epoxy, chloropropyl or isocyanato functional groups.
Claim 12
Dependent Claim
21 words
The membrane of claim 9 wherein the coating is a poly(phenylene oxide) polymer having --COCH 2 Cl groups as a substituent.
Claim 13
Dependent Claim
18 words
The membrane of claim 9 wherein the coating is a poly(phenylene oxide) polymer having bromine as a substituent.
Claim 14
Dependent Claim
18 words
The membrane of claim 9 wherein the coating is a poly(phenylene oxide) polymer having chlorine as a substituent.
Claim 15
Dependent Claim
33 words
The membrane of claim 9 wherein the polymer of the substrate membrane has at least 0.01 substituent per monomeric unit of a halogenated alkyl or acyl of from 1 to 4 carbon atoms.
Claim 16
Dependent Claim
15 words
The membrane of claim 9 wherein the polymer of the substrate membrane is poly(2,6-dimethyl-1,4-phenylene oxide).
Claim 17
Dependent Claim
46 words
The membrane of claim 14 wherein the 3 and 5 positions of the aryl group are linked to substituents selected from the group consisting of hydrogen, halogen, nitro, aliphatic hydrocarbon radicals having 1 to 4 carbon atoms and acyl radicals having at least two carbon atoms.
Claim 18
Dependent Claim
34 words
The membrane of claim 8 wherein the coating is made up of 100 parts of dimethyl siloxane diol and 1 to 20 parts of a silicone compound containing epoxy, chloropropyl or isocyanato functional groups.
Claim 19
Dependent Claim
28 words
The membrane of claim 16 wherein the silicone compound is selected from the group consisting of glycidoxypropyl trimethoxy silane, chloropropyl trimethoxysilane, isocyanatopropyl triethoxysilane and 3,4-epoxycyclothexyl ethyl trimethoxy silane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |