| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically conductive coating for solid electrolytic capacitors, excellent in leveling tendency and electrical conductivity and high in coating film strength, and to provide a solid electrolytic capacitor whose cathode is formed using this coating. SOLUTION: The electrically conductive coating essentially comprises (A) an electrically conductive filler, (B) an alicyclic epoxy resin, (C) an organic solvent or monomer and (D) sulfonium salts of the respective general formulas(1) and (2)( in the formula(1), X is CH<SB>3</SB>, H, a halogen atom or NO<SB>2</SB>; and M is Sb, As or P; in the formula(2), R<SP>1</SP>and R<SP>2</SP>are each an alkyl, halogen atom or H; R<SP>3</SP>is an ether or ester group; and A<SP>-</SP>is SbF<SB>6</SB><SP>-</SP>, AsF<SB>6</SB><SP>-</SP>, PF<SB>6</SB><SP>-</SP>or CH<SB>3</SB>SO<SB>4</SB><SP>-</SP>). In this coating, the amount of the electrically conductive filler(A) is 60-85 wt.% in terms of the weight ratio[ the electrically conductive filler/(resin solids+electrically conductive filler) ] and the amount of the sulfonium salts(D) is 0.1-10 pt(s). wt. based on 100 pts. wt. of the alicyclic epoxy resin(B). The solid electrolytic capacitor whose cathode layer is formed using this coating is also provided. COPYRIGHT: (C)2005,JPO&NCIPI
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