Patent EP0607788A2 successfully refreshed from Google Patents.
US4484989A
Expired / Lapsed
US
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Electro organic method and apparatus for carrying out same
Assignee: PPG Industries Inc
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Filing: 1983-03-25
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Granted: 1984-11-27
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Expires: 2003-03-25
Abstract
Abstract Discloses a solid polymer electrolyte having ring ethers bonded to a polymer matrix, with metal ions chelated by the ring ethers.
Inventors
- 👤 John D. Mansell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:46
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C25; C25B; C25B3/00; C25B3/01; C25B3/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
41 words
A solid permionic membrane comprising a polymeric matrix having crown ethers grafted thereto and metal ions chelated to said crown ethers wherein said crown ether is chosen from the group consisting of 12-crown-4, 15-crown-5, 18-crown-6, and dicyclohexano and dibenzo derivatives thereof.
Claim 2
Dependent Claim
41 words
A solid permionic membrane comprising a polymeric matrix having crown ethers grafted thereto and metal ions chelated to said crown ethers wherein said crown ether is chosen from the group consisting of 12-crown-4, 15-crown-5, 18-crown-6, and dicyclohexano and dibenzo derivatives thereof.
Claim 3
Dependent Claim
26 words
The permionic membrane of claim 1 wherein the polymeric matrix is chosen from the group consisting of polyolefins, polyethers, polyesters, polyamides, polyurethanes, polycarbonates, and polyphenol formaldehydes.
Claim 4
Dependent Claim
102 words
In a method of conducting electrolysis in an electrolytic cell having an anode, a cathode, and a permionic membrane therebetween, which method comprises externally imposing an electrical potential across said electrolytic cell whereby to cause an electrical current to flow from said anode through said permionic membrane to said cathode, the improvement wherein said permionic membrane is a solid cation selective membrane comprising a polymeric matrix having crown ethers grafted to said matrix and metal ions chelated to said crown ethers wherein said crown ether is chosen from the group consisting of 12-crown-4, 15-crown-5, 18-crown-6, dicyclohexano derivatives thereof, and dibenzo derivatives thereof.
Claim 5
Dependent Claim
102 words
In a method of conducting electrolysis in an electrolytic cell having an anode, a cathode, and a permionic membrane therebetween, which method comprises externally imposing an electrical potential across said electrolytic cell whereby to cause an electrical current to flow from said anode through said permionic membrane to said cathode, the improvement wherein said permionic membrane is a solid cation selective membrane comprising a polymeric matrix having crown ethers grafted to said matrix and metal ions chelated to said crown ethers wherein said crown ether is chosen from the group consisting of 12-crown-4, 15-crown-5, 18-crown-6, dicyclohexano derivatives thereof, and dibenzo derivatives thereof.
Claim 6
Dependent Claim
25 words
The method of claim 3 wherein the polymeric matrix is chosen from the group consisting of polyolefins, polyethers, polyesters, polyamides, polyurethanes, polycarbonates, and polyphenol formaldehydes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |