US5795953A
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Soluble, electroconductive polypyrrole and method for preparing the same
Assignee: Korea Institute of Science and Technology
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Filing: 1995-09-22
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Granted: 1998-08-18
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Expires: 2015-09-22
Abstract
Abstract Polypyrrole represented as the following structural formula II: ##STR1## wherein A - = ##STR2## which is synthesized by a method comprising the step of polymerizing pyrrole monomer in an aqueous solution containing dodecylbenzene sulfonic acid as a dopant, in the presence of an oxidant, resulting in polypyrrole which is easily dissolved in organic solvents.
Inventors
- 👤 Chung Yup Kim
- 👤 Jun Young Lee
- 👤 Dong Young Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A method for preparing soluble, electroconductive polypyrrole comprising the step of polymerizing pyrrole monomer in an aqueous solution containing dodecylbenzene sulfonic acid as a dopant, in the presence of about 0.05 moles to about 0.5 moles of a persulfate oxidant per mole of said pyrrole monomer to produce said soluble, electroconductive polypyrrole.
Claim 2
Independent Claim
52 words
A method for preparing soluble, electroconductive polypyrrole comprising the step of polymerizing pyrrole monomer in an aqueous solution containing dodecylbenzene sulfonic acid as a dopant, in the presence of about 0.05 moles to about 0.5 moles of a persulfate oxidant per mole of said pyrrole monomer to produce said soluble, electroconductive polypyrrole.
Claim 3
Dependent Claim
22 words
The method in accordance with claim 1, wherein said step of polymerizing is carried out at a temperature of about 5° C.
Claim 4
Dependent Claim
26 words
The method in accordance with claim 1, wherein said polypyrrole has an intrinsic viscosity in m-cresol from about 0.07 dl/g to 0.3 dl/g at 30° C.
Claim 5
Dependent Claim
22 words
The method in accordance with claim 1, wherein said polypyrrole is soluble in chloroform in the presence of additional dodecylbenzene sulfonic acid.
Claim 6
Dependent Claim
17 words
A method in accordance with claim 1, wherein said persulfate oxidant is ammonium persulfate or potassium persulfate.
Claim 7
Dependent Claim
30 words
The method in accordance with claim 1, wherein said dodecylbenzene sulfonic acid is added at an amount of about 0.1 to about 1.0 moles per mole of said pyrrole monomers.
References Cited (Backward Citations)
No citation records indexed.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |