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US4468500A
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Amino ketone cross-linked polyphenylene oxide
Assignee: Permea Inc
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Filing: 1983-06-30
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Granted: 1984-08-28
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Expires: 2003-06-30
Abstract
Abstract Cross-linked polyphenylene oxide compositions comprise the reaction product of haloacylated polyphenylene oxide and a primary monoamine. The polyphenylene oxide chains are cross-linked by amino ketone bonding. Such cross-linked polymers are useful as membranes, for instance gas separation membranes.
Inventors
- 👤 Raymond F. Malon
- 👤 Anthony Zampini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:03
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/52; B01D71/522; B01D71/5223; C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
A cross-linked polyphenylene oxide polymer composition comprising the reaction product of a haloacylated phenylene oxide polymer and a primary monoamine selected from the group consisting of methylamine, ethylamine, a propylamine, a butylamine and aniline, wherein there is amino ketone cross-linkage between phenylene groups represented by the structural formula --COCHR'NRCHR'CO--, where R is methyl, ethyl, propyl, butyl or phenyl and where R' is hydrogen, methyl, ethyl or propyl.
Claim 2
Dependent Claim
67 words
A cross-linked polyphenylene oxide polymer composition comprising the reaction product of a haloacylated phenylene oxide polymer and a primary monoamine selected from the group consisting of methylamine, ethylamine, a propylamine, a butylamine and aniline, wherein there is amino ketone cross-linkage between phenylene groups represented by the structural formula --COCHR'NRCHR'CO--, where R is methyl, ethyl, propyl, butyl or phenyl and where R' is hydrogen, methyl, ethyl or propyl.
Claim 3
Dependent Claim
43 words
The composition of claim 1 wherein the phenylene oxide polymer has at least one alkyl group having 1 to 3 carbon atoms, said alkyl groups being in an ortho position on the phenylene ring with respect to the oxygen of the phenylene oxide.
Claim 4
Dependent Claim
13 words
The composition of claim 2 wherein the phenylene oxide has two methyl groups.
Claim 5
Dependent Claim
14 words
The composition of claim 3 wherein the haloacyl group comprises haloacetyl, halopropionyl or halobutyryl.
Claim 6
Dependent Claim
20 words
The composition of claim 4 wherein the haloacyl groups have halogen selected from the group consisting of chlorine or bromine.
Claim 7
Dependent Claim
86 words
A cross-linked phenylene oxide polymer composition comprising the reaction product of haloacylated poly(2,6-dimethyl-1,4-phenylene oxide) and a primary monoamine selected from the group consisting of methylamine, ethylamine, a propylamine, a butylamine and aniline wherein there are from 0.1 to 1.0 acyl halogen atoms per phenylene there are from 0.1 to 1.0 acyl halogen atoms per phenylene oxide unit, and wherein there is amino ketone cross-linkage between phenylene groups represented by the structural formula --COCH 2 NRCH 2 CO--, where R is methyl, ethyl, propyl, butyl or phenyl.
Claim 8
Dependent Claim
86 words
A cross-linked phenylene oxide polymer composition comprising the reaction product of haloacylated poly(2,6-dimethyl-1,4-phenylene oxide) and a primary monoamine selected from the group consisting of methylamine, ethylamine, a propylamine, a butylamine and aniline wherein there are from 0.1 to 1.0 acyl halogen atoms per phenylene there are from 0.1 to 1.0 acyl halogen atoms per phenylene oxide unit, and wherein there is amino ketone cross-linkage between phenylene groups represented by the structural formula --COCH 2 NRCH 2 CO--, where R is methyl, ethyl, propyl, butyl or phenyl.
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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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |