Solid electrolytic capacitor with heat resisting polyaniline and

Details Solid electrolytic capacitor with heat resisting polyaniline and Solid electrolytic capacitor with heat resisting polyaniline and

1997-02-28

1999-09-28

Feild, Lynn D.

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

361523, 361524, 29 2503, H01G 902

Patent

active

059598328

ABSTRACT:
A heat resistant derivative conductive polymer containing nitrogen atoms exclusively in units of polyaniline or a derivative thereof contains a sulfonic acid compound as a dopant, and the percentage of sulfonic acid groups per recurring unit of the polyaniline or derivative thereof is set to 28 to 40%. Also, a solid electrolytic capacitor uses a solid electrolyte of polyaniline or derivative thereof containing a sulfonic acid compound as a dopant, wherein the percentage of sulfonic acid groups per recurring unit of polyaniline or derivative thereof is set to 28 to 40%. In this selected range of the concentration of the dopant, the conductivity and the pyrolysis commencement temperature characteristics are excellent.

REFERENCES:
patent: 5130886 (1992-07-01), Kishimoto et al.
patent: 5428500 (1995-06-01), Nishiyama et al.
patent: 5473503 (1995-12-01), Sakata et al.
Database WPI, Section Ch, Week 9410, Derwent Publications, Feb. 4, 1994.
S. Palaniappan et al., "Composition and Spectral Studies of Polyaniline Salts", Polymers for Advanced Technologies, vol. 5, No. 4, Apr. 1, 1994, 225-230.

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