Patent US2263117A successfully refreshed from Google Patents.
US5378402A
Expired / Lapsed
US
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Polymer compositions
Assignee: Tyco Electronics UK Ltd
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Filing: 1983-07-21
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Granted: 1995-01-03
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Expires: 2003-07-21
Abstract
Abstract Electrically conductive polymers, especially polypyrroles, are formed with a charged polymeric dopant supplying the necessary counter-ions to stabilise the charged conductive form of the conductive polymer. The physical properties of the conductive polymer can thus be usefully modified in ways different from those achieved by non-polymeric dopants or by forming the conductive polymers in pre-existing bodies of non dopant (i.e. uncharged) polymers.
Inventors
- 👤 Malcolm G. Cross
- 👤 Robert Lines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01B1/128; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
78 words
A polymer composition comprising (1) a polymer which is intrinsically or inherently electrically conductive, and (2) a polymeric dopant which (a) is associated with the electrically conductive polymer and (b) includes electrically charged groups which stabilize the electrically conductive polymer when the polymer is in an electrically conductive state, said electrically charged groups being present as part of the polymeric backbone of the dopant or as side chains pendant from the polymeric backbone of the dopant, or both.
Claim 2
Dependent Claim
78 words
A polymer composition comprising (1) a polymer which is intrinsically or inherently electrically conductive, and (2) a polymeric dopant which (a) is associated with the electrically conductive polymer and (b) includes electrically charged groups which stabilize the electrically conductive polymer when the polymer is in an electrically conductive state, said electrically charged groups being present as part of the polymeric backbone of the dopant or as side chains pendant from the polymeric backbone of the dopant, or both.
Claim 3
Dependent Claim
19 words
A composition according to claim 1, wherein the conductive polymer is positively charged and the dopant is negatively charged.
Claim 4
Dependent Claim
14 words
A composition according to claim 2, wherein the conductive polymer is an aniline polymer.
Claim 5
Dependent Claim
14 words
A composition according to claim 2, wherein the conductive polymer is a pyrrole polymer.
Claim 6
Dependent Claim
14 words
A composition according to claim 4, wherein the polymeric dopant is an ionisable polysulphonate.
Claim 7
Dependent Claim
12 words
A composition according to claim 5, wherein the dopant is sulphonated polyethylene.
Claim 8
Dependent Claim
15 words
A composition according to claim 5, wherein the dopant is sulphonated styrene (hydrogenated) butadiene copolymer.
Claim 9
Dependent Claim
15 words
A composition according to claim 4 which is in the form of a self-supporting film.
Claim 10
Dependent Claim
53 words
A composition according to claim 8 wherein the film has a first surface and a second surface, and the concentration of the conductive polymer is greater at the first surface than at the second surface and the concentration of the polymeric dopant is greater at the second surface than at the first surface.
Claim 11
Dependent Claim
18 words
A polymer according to claim 1 wherein the electrically charged group comprises a sulphonate, carboxylate or phosphonate group.
Claim 12
Dependent Claim
14 words
A polymer according to claim 1 wherein the polymeric dopant is a polystyrene sulfonate.
Claim 13
Dependent Claim
14 words
A polymer according to claim 1 wherein the polymeric dopant is a polyacrylamidomethylpropane sulfonate.
Claim 14
Dependent Claim
14 words
A polymer composition according to claim 1 wherein the polymer is intrinsically electrically conductive.
Claim 15
Dependent Claim
14 words
A polymer composition according to claim 8 wherein the polymer is intrinsically electrically conductive.
Claim 16
Dependent Claim
14 words
A polymer composition according to claim 11 wherein the polymer is intrinsically electrically conductive.
Claim 17
Dependent Claim
14 words
A polymer composition according to claim 1 wherein the polymer is inherently electrically conductive.
Claim 18
Dependent Claim
14 words
A polymer composition according to claim 8 wherein the polymer is inherently electrically conductive.
Claim 19
Dependent Claim
14 words
A polymer composition according to claim 11 wherein the polymer is inherently electrically conductive.
Claim 20
Dependent Claim
37 words
A polymer composition comprising a pyrrole polymer which is intrinsically or inherently electrically conductive and which is associated with an ionizable polysulphonate which stabilizes the pyrrole polymer when the pyrrole polymer is in an electrically conductive state.
Claim 21
Dependent Claim
37 words
A polymer composition comprising a pyrrole polymer which is intrinsically or inherently electrically conductive and which is associated with an ionizable polysulphonate which stabilizes the pyrrole polymer when the pyrrole polymer is in an electrically conductive state.
Claim 22
Dependent Claim
13 words
A composition according to claim 19 wherein the ionizable polysulphonate is sulphonate polyethylene.
Claim 23
Dependent Claim
16 words
A composition according to claim 19 wherein the ionizable polysulphonate is sulphonated styrene (hydrogenated) butadiene copolymer.
Claim 24
Dependent Claim
15 words
A polymer composition according to claim 19 wherein the pyrrole polymer is intrinsically electrically conductive.
Claim 25
Dependent Claim
15 words
A polymer composition according to claim 20 wherein the pyrrole polymer is intrinsically electrically conductive.
Claim 26
Dependent Claim
15 words
A polymer composition according to claim 19 wherein the pyrrole polymer is inherently electrically conductive.
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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) | 1998-01-02 | 1998-07-04 | 1999-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-02 | 2002-07-04 | 2003-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-02 | 2006-07-04 | 2007-01-03 | $7700.00 | Window Closed / Lapsed |