Patent US4910645A successfully refreshed from Google Patents.
US4910645A
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Solid electrolytes, and electrolyte capacitors containing same
Assignee: H.C. Starck GmbH
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Filing: 1989-04-10
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Granted: 1990-03-20
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Expires: 2009-04-10
Abstract
Abstract The invention relates to the use fo polythiophenes which are built up from structural units of the formula <IMAGE> (I) in which R1 and R2, independently of one another, stand for hydrogen or a C1-C4-alkyl group, or, together, form an optionally substituted C1-C4-alkylene radical or a 1,2-cyclohexylene radical, solid electrolytes in electrolyte capacitors, and to the electrolyte capacitors containing these solid electrolytes.
Inventors
- 👤 Friedrich Jonas
- 👤 Gerhard Heywang
- 👤 Werner Schmidtberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:22
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01G11/00; H01G11/22; H01G11/30; H01G11/48; H01G11/54; H01G11/56; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
77 words
In a solid electrolyte capacitor with a solid electrolyte the improvement which comprises using as the solid electrolyte a polythiophene which is built up from structural units of the formula ##STR4## in which R 1 and R 2 , independently of one another, stand for hydrogen or a C 1 -C 4 -alkyl group or, together, form a C 1 -C 4 -alkylene radical or a substituted C 1 -C 4 -alkylene radical or a 1,2-cyclohexylene radical.
Claim 2
Dependent Claim
77 words
In a solid electrolyte capacitor with a solid electrolyte the improvement which comprises using as the solid electrolyte a polythiophene which is built up from structural units of the formula ##STR4## in which R 1 and R 2 , independently of one another, stand for hydrogen or a C 1 -C 4 -alkyl group or, together, form a C 1 -C 4 -alkylene radical or a substituted C 1 -C 4 -alkylene radical or a 1,2-cyclohexylene radical.
Claim 3
Dependent Claim
62 words
The solid electrolyte capacitor of claim 1 wherein R 1 and R 2 , independently of one another, stand for a C 1 -C 4 -alkyl group or, together, form a methylene radical, a methylene radical which is substituted by alkyl, a 1,2-ethylene radical, a 1,2-ethylene radical which is substituted by C 1 -C 12 -alkyl or phenyl, or a 1,2-cyclohexylene radical.
Claim 4
Dependent Claim
34 words
The solid electrolyte capacitor of claim 1, wherein R 1 and R 2 , independently of one another, stand for a methyl or ethyl group or, together, form a methylene, 1,2-ethylene or 1,2-propylene radical.
Claim 5
Dependent Claim
91 words
In a method for forming a solid electrolyte capacitor the improvement which comprises producing the polythiophene directly on the metal foil which is used as the anode and is coated on one side with an oxide coating, by oxidative polymerization of 3,4-dialkoxythiophenes of the formula ##STR5## in which R 1 and R 2 , independently of one another, stand for hydrogen or a C 1 -C 4 -alkyl group or, together, form a C 1 -C 4 -alkylene radical, a substituted C 1 -C 4 -alkylene radical or a 1,2-cyclohexylene radical.
Claim 6
Dependent Claim
91 words
In a method for forming a solid electrolyte capacitor the improvement which comprises producing the polythiophene directly on the metal foil which is used as the anode and is coated on one side with an oxide coating, by oxidative polymerization of 3,4-dialkoxythiophenes of the formula ##STR5## in which R 1 and R 2 , independently of one another, stand for hydrogen or a C 1 -C 4 -alkyl group or, together, form a C 1 -C 4 -alkylene radical, a substituted C 1 -C 4 -alkylene radical or a 1,2-cyclohexylene radical.
Claim 7
Dependent Claim
60 words
The method of claim 4, wherein R 1 and R 2 , independently of one another, stand for a C 1 -C 4 -alkyl group or, together, form a methylene radical, a methylene radical which is substituted by alkyl, a 1,2-ethylene radical, a 1,2-ethylene radical which is substituted by a C 1 -C 12 -alkyl or phenyl, or a 1,2-cyclohexylene
Claim 8
Dependent Claim
32 words
The method of claim 4, wherein R 1 and R 2 , independently of one another, stand for a methyl or ethyl group or together, for a methylene, 1,2-ethylene or 1,2-propylene radical.
Claim 9
Dependent Claim
52 words
The method of claim 4, wherein the polythiophene is produced directly on the metal foil by oxidative polymerization of the 3,4-dialkoxythiophene, by applying a dialkoxythiophene of the formula (II) and an oxidant, to the side of the metal foil which is coated with the oxide coating, and by completing the oxidative polymerization.
Claim 10
Dependent Claim
19 words
The method of claim 7, wherein the dialkoxythiophene and the oxidant are applied in the form of a solution.
Claim 11
Dependent Claim
21 words
The method of claim 8, wherein the 3,4-dialkoxythiophene of the formula (II) and the oxidant are jointly applied in one solution.
Claim 12
Dependent Claim
33 words
The method of claim 7, wherein the oxidant used is an alkali metal persulphate, an ammonium persulphate or an iron(III) salt of an organic acid or an inorganic acid containing an organic radical.
Claim 13
Dependent Claim
16 words
A method according to claim 7, wherein the oxidative polymerization is completed by warming the coating.
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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |