Electrolytic capacitor with improved leakage and dissipation fac

Details Electrolytic capacitor with improved leakage and dissipation fac Electrolytic capacitor with improved leakage and dissipation fac

1998-09-30

2000-06-06

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

361502, 361509, 361528, 361529, 429209, 429214, 429245, 429215, H01G 915

Patent

active

060726946

ABSTRACT:
The adhesion of a conductive polymer film to an oxidized porous pellet anode is improved by the incorporation of a silane coupling agent in the polymer impregnating solution. The incorporation of the silane coupling agent also decreases leakage current and dissipation factor. Suitable silanes are those of the general formula (R.sup.1 --R.sup.3)--Si--(OR.sup.2).sub.3. Each of R.sup.2 and R.sup.3 is a C.sub.1 -C.sub.6 alkyl group such as methyl, ethyl, or propyl. R.sup.1 can be chosen from a wide variety of organic functional groups such as epoxy, glycidoxy, amino, and pyrrole. The most preferred silane is 3-glycidoxypropyltrimethoxysilane.

REFERENCES:
patent: 4805074 (1989-02-01), Harakawa et al.
patent: 5187650 (1993-02-01), Kudoh et al.
patent: 5424907 (1995-06-01), Kojima et al.
patent: 5621608 (1997-04-01), Arai et al.
patent: 5729428 (1998-03-01), Sakata et al.
patent: 5824434 (1998-10-01), Kawakami et al.

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