US5520849A
Expired / Lapsed
US
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Electrically conductive polymer composition
Assignee: Dow Chemical Co
•
Filing: 1994-06-23
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Granted: 1996-05-28
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Expires: 2014-06-23
Abstract
Abstract New electrically conductive polymer compositions comprise i) an electrically conductive polymer a) of one or more oxidatively polymerizable aromatic compounds and ii) a polymer d) having ammonium, phosphonium or sulfonium groups in the polymer chain(s). The polymer compositions comprising polymers a) and d) are prepared by oxidative polymerization of one or more aromatic compounds in the presence of a polymer b) having ammonium, phosphonium or sulfonium groups in the polymer chain(s) and containing a polydentate anionic complex which has a redox potential sufficient for enabling oxidative polymerization of the aromatic compounds. Said polymer b) which has a non-metallic anionic complex such as S 2 O 8 2- is also novel.
Inventors
- 👤 Jurgen Eiffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:22
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G61/00; C08G61/12; C08G61/122; C08G61/123; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
Electrically conductive polymer particles having an average size of 5 nm to 1 mm and comprising i) a core of an electrically conductive polymer a) containing one or more oxidatively polymerizable aromatic compounds and ii) a coating of a polymer d) having ammonium, phosphonium or sulfonium groups in the polymer chain(s), wherein the weight of the coating is up to about 25 percent, based on the total weight of a) and d).
Claim 2
Dependent Claim
72 words
Electrically conductive polymer particles having an average size of 5 nm to 1 mm and comprising i) a core of an electrically conductive polymer a) containing one or more oxidatively polymerizable aromatic compounds and ii) a coating of a polymer d) having ammonium, phosphonium or sulfonium groups in the polymer chain(s), wherein the weight of the coating is up to about 25 percent, based on the total weight of a) and d).
Claim 3
Dependent Claim
26 words
The polymer particles of claim 1 wherein the oxidatively polymerizable aromatic compound in polymer a) is selected from the group consisting of pyrroles, thiophenes and anilines.
Claim 4
Dependent Claim
131 words
The polymer particles of claim 1 wherein polymer d) is a homo- or copolymer of one or more monomers of Formula I ##STR6## wherein A and B are the same or different and represent a C 1-12 -- alkyl or phenyl radical, either unsubstituted or having one or more substituents which are not polymerizable in the presence of a free radical initiator; or A and B together represent --CH 2 --CH 2 --CH(CH 3 )--CH(CH 3 )--, --CH═CH--CH═CH--, --CH═CH--CH═N--, or --CH═CH--N═CH--; and R and R' are the same or different and represent hydrogen, unsubstituted C 1-6 -alkyl, unsubstituted phenyl, nitro-C 1-6 -alkyl, substituted C 1-6 -alkyl or substituted phenyl, the substituents being selected from the group of hydroxy, amido, loweralkoxyl, phenoxy, naphthoxy, cyano, thioloweralkoxy, thiophenoxy, loweralkoyl and 5- or 6-membered cycloalkyl.
Claim 5
Dependent Claim
30 words
The polymer particles of claim 3 wherein A and B in Formula I each independently represent methyl, ethyl or unsubstituted phenyl and R and R' independently are hydrogen or methyl.
Claim 6
Dependent Claim
24 words
The polymer particles of claim 4 wherein A and B in Formula I represent methyl and R and R' independently are hydrogen or methyl.
Claim 7
Dependent Claim
16 words
The polymer particles of claim 1 wherein the aromatic compound is a substituted or unsubstituted aniline.
Claim 8
Dependent Claim
19 words
The polymer particles of claim 1 wherein the aromatic compound is selected from the group of thiophenes and pyrroles.
Claim 9
Dependent Claim
19 words
The polymer particles of claim 1 wherein the particles have an average size of 10 nm to 0.1 mm.
Claim 10
Dependent Claim
85 words
A polymer composition comprising a polycarbonate or chlorinated polyethylene and, as a filler, electrically conductive polymer particles having an average size of 5 nm to 1 mm and comprising i) a core of an electrically conductive polymer a) containing one or more oxidatively polymerizable aromatic compounds and ii) a coating of a polymer d) having ammonium, phosphonium or sulfonium groups in the polymer chain(s), wherein the weight of the coating is up to about 25 percent, based on the total weight of a) and d).
Claim 11
Dependent Claim
85 words
A polymer composition comprising a polycarbonate or chlorinated polyethylene and, as a filler, electrically conductive polymer particles having an average size of 5 nm to 1 mm and comprising i) a core of an electrically conductive polymer a) containing one or more oxidatively polymerizable aromatic compounds and ii) a coating of a polymer d) having ammonium, phosphonium or sulfonium groups in the polymer chain(s), wherein the weight of the coating is up to about 25 percent, based on the total weight of a) and d).
Claim 12
Dependent Claim
14 words
The polymer particles of claim 1, wherein polymer d) contains sulfate groups as counter-ions.
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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) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |