US4657985A
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Multicomponent systems based on polythiophene
Assignee: Verizon Laboratories Inc
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Filing: 1984-07-30
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Granted: 1987-04-14
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Expires: 2004-07-30
Abstract
Abstract Compositions based on polythiophene are described having incorporated therein a polyether, such as polytetrahydrofuran. The polyether is present in an amount of at least about 10 weight percent of the polythiophene present. The compositions exhibit improved mechanical integrity, processing properties, and d.c. electrical conductivity over polythiophene. A process for producing the compositions is also described in which a thiophene compound is electrochemically polymerized in the presence of a dissolved polyether.
Inventors
- 👤 Mark A. Druy
- 👤 Sukant K. Tripathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:00
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126; C08L; C08L65/00; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
28 words
A composition comprising a solid polythiophene having incorporated therein polyether, the polyether being present in an amount of at least about 10 weight percent of the polythiophene present.
Claim 2
Dependent Claim
28 words
A composition comprising a solid polythiophene having incorporated therein polyether, the polyether being present in an amount of at least about 10 weight percent of the polythiophene present.
Claim 3
Dependent Claim
28 words
A composition in accordance with claim 1 wherein the polyether is present in an amount from 10 weight percent to about 30 weight percent of the polythiophene present.
Claim 4
Dependent Claim
26 words
A composition in accordance with claim 1 wherein the polythiophene is prepared by electrochemical polymerization of a thiophene compound selected from the group consisting of: ##STR2##
Claim 5
Dependent Claim
13 words
A composition in accordance with claim 3 wherein the thiophene compound is 2,2'-bithiophene.
Claim 6
Dependent Claim
22 words
A composition in accordance with claim 3 wherein the polyether is selected from the group consisting of polytetrahydrofuran, polyoxyethylene, polyoxypropylene, and poly(oxy-1,3-phenylene).
Claim 7
Dependent Claim
12 words
A composition in accordance with claim 5 wherein the polyether is polytetrahydrofuran.
Claim 8
Independent Claim
93 words
A method for preparing a multicomponent system comprising a polythiophene and a polyether, said method comprising: passing a current across an electrochemical cell containing a solution comprising a thiophene compound, an electrolyte, and a polyether in a solvent to form a multicomponent system film of predetermined thickness on the anode of the cell, wherein: said thiophene compound is electrochemically polymerizable; said solvent is selected such that said thiophene compound is soluble therein and the polythiophene is insoluble therein, said electrolyte is soluble in said solvent; and said polyether is soluble in said solvent.
Claim 9
Independent Claim
93 words
A method for preparing a multicomponent system comprising a polythiophene and a polyether, said method comprising: passing a current across an electrochemical cell containing a solution comprising a thiophene compound, an electrolyte, and a polyether in a solvent to form a multicomponent system film of predetermined thickness on the anode of the cell, wherein: said thiophene compound is electrochemically polymerizable; said solvent is selected such that said thiophene compound is soluble therein and the polythiophene is insoluble therein, said electrolyte is soluble in said solvent; and said polyether is soluble in said solvent.
Claim 10
Dependent Claim
24 words
A method in accordance with claim 7 wherein the density of the current flow to the anode is at least 0.1 mA/cm 2 .
Claim 11
Dependent Claim
18 words
A method in accordance with claim 7 wherein the thiophene compound is 2,2'-bithiophene and the polyether is polytetrahydrofuran.
Claim 12
Independent Claim
90 words
A method for preparing a multicomponent system comprising a polythiophene and a polyether, said method comprising: passing a current across an electrochemical cell containing a solution of an electrolyte in tetrahydrofuran to form a polytetrahydrofuran precipitate in the solution; adding an electrochemically polymerizable thiophene compound to the solution contained in said electrochemical cell; and passing a current across said electrochemical cell containing the solution comprising said thiophene compound, said polytetrahydrofuran precipitate, and said electrolyte in tetrahydrofuran to form a multicomponent film of predetermined thickness on the anode of the cell.
Claim 13
Independent Claim
90 words
A method for preparing a multicomponent system comprising a polythiophene and a polyether, said method comprising: passing a current across an electrochemical cell containing a solution of an electrolyte in tetrahydrofuran to form a polytetrahydrofuran precipitate in the solution; adding an electrochemically polymerizable thiophene compound to the solution contained in said electrochemical cell; and passing a current across said electrochemical cell containing the solution comprising said thiophene compound, said polytetrahydrofuran precipitate, and said electrolyte in tetrahydrofuran to form a multicomponent film of predetermined thickness on the anode of the cell.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |