US5254223A
Expired / Lapsed
US
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Process for making semipermeable polymers with ion exchange and ion conductive capabilities on an electrically conductive substrate
Assignee: Individual
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Filing: 1992-08-21
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Granted: 1993-10-19
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Expires: 2012-08-21
Abstract
Abstract The process for preparation of semipermeable polymer layers with ion-exchanging and ion-conducting capabilities comprises the steps of making and depositing a polymer layer in situ by electrochemical polymerization on an electrically conductive substrate and subsequently cross-linking, by heating or irradiating. The electrochemically formed polymer layers are built up of poly(oxyphenylene) or poly(naphthylene) chains, in which the aromatic units contain the ion-exchanging and ion-conducting groups. These polymer layers are suitable for use as a semipermeable membrane in an electrode/membrane unit, as a selective layer or as a component of a selective layer of potentiometric and amperometric sensors and as a solid polymer electrolyte in electrochemical cells.
Inventors
- 👤 Mira Josowicz
- 👤 Karin Potje-Kamloth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/23; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/40; H01M8/00; H01M8/02; H01M8/0289; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
A process for preparation of a semipermeable polymer layer, said polymer layer having a thickness, exhibiting ion-exchanging capability and ion-conducting capability comprising the steps of: (a) producing said polymer layer from an electrolyte bath by electrochemical polymerization of a OH-containing aromatic monomer, which contains acidic or basic functionalized groups; (b) depositing in situ said polymer layer on an electrically conducting substrate; and (c) subsequently self cross-linking said polymer layer by one of heating and irradiating.
Claim 2
Dependent Claim
75 words
A process for preparation of a semipermeable polymer layer, said polymer layer having a thickness, exhibiting ion-exchanging capability and ion-conducting capability comprising the steps of: (a) producing said polymer layer from an electrolyte bath by electrochemical polymerization of a OH-containing aromatic monomer, which contains acidic or basic functionalized groups; (b) depositing in situ said polymer layer on an electrically conducting substrate; and (c) subsequently self cross-linking said polymer layer by one of heating and irradiating.
Claim 3
Dependent Claim
36 words
A process according to claim 1 wherein step a) comprises producing said polymer layer by copolymerization or mixed polymerization of OH-containing aromatic monomer, which contains acidic or basic functionalized groups, with a noncross-linkable OH-containing aromatic monomer.
Claim 4
Dependent Claim
45 words
A process according to claim 1 wherein step a) comprises producing said polymer layer by copolymerization or mixed polymerization of OH-containing aromatic monomer, which contains acidic or basic functionalized groups, with a cross-linkable OH-containing aromatic monomer having an unsaturated aliphatic group at an ortho-position thereof.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein said OH-containing aromatic monomer is selected from the groups of phenols or of naphthols.
Claim 6
Dependent Claim
25 words
A process according to claim 1 wherein said monomer has an aromatic OH-containing group containing acidic functionalized groups at the ortho-, meta- or para-position thereof.
Claim 7
Dependent Claim
18 words
A process according to claim 1 wherein said acidic functionalized groups are carboxy, sulfonic, phosphinic or phosphonic groups.
Claim 8
Dependent Claim
31 words
A process according to any of claims 1, 2, 3, or 4 wherein said monomer has an aromatic OH-containing group containing basic functionalized groups at an ortho-, meta- or para-position thereof.
Claim 9
Dependent Claim
33 words
A process according to claim 1 wherein said basic functionalized groups are primary, secondary, tertiary amines, or quaternary ammonium compounds containing the same or different aliphatic groups having 1 to 4 carbon atoms.
Claim 10
Dependent Claim
29 words
A process according to claim 1 further comprising linking said basic functionalized groups to said OH-containing aromatic monomer by an aliphatic alkylene chain having 1 to 5 carbon atoms.
Claim 11
Dependent Claim
27 words
A process according to claim 1 wherein said noncross-linkable monomer has an OH-containing aromatic group containing at least one aliphatic group having 2 to 7 carbon atoms.
Claim 12
Dependent Claim
28 words
A process according to claim 1 wherein said cross-linkable monomer has an OH-containing aromatic group containing at least one unsaturated aliphatic group having 2 to 7 carbon atoms.
Claim 13
Dependent Claim
26 words
A process according to claim 1 further comprising connecting said electrically conducting substrate as an anode during the electrochemical preparation and deposition of said polymer layer.
Claim 14
Dependent Claim
26 words
A process according to claim 1 further comprising controlling the thickness of the polymer layer by controlling the charge, which is consumed during the electrochemical polymerization.
Claim 15
Dependent Claim
20 words
A process according to claim 1 wherein said polymer thickness is in the range of 50 nanometers to 500 micrometers.
Claim 16
Dependent Claim
15 words
A process according to claim 1 wherein said electrolyte bath contains an adherence promoting agent.
Claim 17
Dependent Claim
20 words
A process according to claim 1 further comprising performing said cross-linking of said polymer layer by heating or by irradiating.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-18 | 1997-04-19 | 1997-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-18 | 2001-04-19 | 2001-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-18 | 2005-04-19 | 2005-10-19 | $7700.00 | Window Closed / Lapsed |