§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4904553A Expired / Lapsed US ⏱️ 0.0 years remaining

Polyaniline

Assignee: Bridgestone Corp
•
Filing: 1988-06-24
•
Granted: 1990-02-27
•
Expires: 2008-06-24
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A polyaniline is highly conductive and less corrosive when it contains up to 7 mol % of benzenoid-ammonium salt state and up to 25 mol % of quinoid-diimine state, based on the total molar amount of the polyaniline.

Inventors

  • 👤 Tadashi Nakajima
  • 👤 Shinichi Toyosawa
  • 👤 Shigeru Kijima
  • 👤 Katsuhiko Arai
  • 👤 Yuko Maeda
  • 👤 Masao Ogawa
  • 👤 Takahiro Kawagoe
  • 👤 Yasuhiro Iino
  • 👤 Ryuzo Osawa
  • 👤 Yuichi Ishino

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 05:34
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/0464; H01M4/0466; H01M4/36; H01M4/60; H01M4/602; H01M4/64; H01M4/70; H01M4/72; H01M4/74; H01M4/742; H01M2004/026; H01M2004/028; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M4/66; H01M4/661; H01M4/663; H01M4/669; Y; Y02; Y02E; Y02E60/00; Y02E60/10

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 75 words
A polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline predominantly contains a polyaniline in the dope-semiquinone radical state having a higher maximum electron density at 7-9 eV than at 15-20 eV when analyzed by X-ray photoelectron spectroscopy.
Claim 2
Dependent Claim 75 words
A polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline predominantly contains a polyaniline in the dope-semiquinone radical state having a higher maximum electron density at 7-9 eV than at 15-20 eV when analyzed by X-ray photoelectron spectroscopy.
Claim 3
Dependent Claim 102 words
A polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline exhibits a peak in the range of 140-145 ppm and no peak having an intensity of more than 85% of that of said peak in the range less than 140 ppm in the 13 C solid state high-resolution NMR analysis with a contact time of 1 msec. and a relaxation time of 20 μsec.
Claim 4
Dependent Claim 102 words
A polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline exhibits a peak in the range of 140-145 ppm and no peak having an intensity of more than 85% of that of said peak in the range less than 140 ppm in the 13 C solid state high-resolution NMR analysis with a contact time of 1 msec. and a relaxation time of 20 μsec.
Claim 5
Dependent Claim 88 words
A secondary cell which comprises a positive electrode active material in the form of a polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein the polyaniline is predominantly in the dope semiquinone radical state having a higher maximum electron density at 7-9 eV than at 15-20 eV when analyzed by X-ray photoelectron spectroscopy.
Claim 6
Dependent Claim 88 words
A secondary cell which comprises a positive electrode active material in the form of a polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein the polyaniline is predominantly in the dope semiquinone radical state having a higher maximum electron density at 7-9 eV than at 15-20 eV when analyzed by X-ray photoelectron spectroscopy.
Claim 7
Dependent Claim 121 words
A secondary cell which comprises a positive electron active material in the form of a polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline is predominantly in the dope-semiquinone radical state exhibiting a peak in the range of 140-145 ppm and no peak having an intensity of more than 85% of that of said peak in the range less than 140 ppm in a 13 C solid state high-resolution NMR analysis with a contact of 1 msec. and a relaxation time of 20 μsec.
Claim 8
Dependent Claim 121 words
A secondary cell which comprises a positive electron active material in the form of a polyaniline in which up to 7 mol % of said polyaniline is present in the benzenoid-ammonium salt state and up to 25 mol % of said polyaniline is present in the quinoid-diimine state, based on the total molar amount of the polyaniline, and wherein said polyaniline is predominantly in the dope-semiquinone radical state exhibiting a peak in the range of 140-145 ppm and no peak having an intensity of more than 85% of that of said peak in the range less than 140 ppm in a 13 C solid state high-resolution NMR analysis with a contact of 1 msec. and a relaxation time of 20 μsec.

References Cited (Backward Citations)

US4321114A Cited
US4442187A Cited
US4728589A Cited
DE3615975A1 Cited
US4695521A Cited
US4740436A Cited
EP0210023A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-02-26 1993-08-28 1994-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-02-26 1997-08-28 1998-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-02-26 2001-08-28 2002-02-27 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag