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US 5,496,481 AGranted
Electrolyte for electrolytic capacitor
AssigneeBoundary Technologies, Inc.
InventorYanming Liu
Life of this patent
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Abstract
An electrolyte for aluminum electrolytic capacitors comprises a triakylamine having from 8 to 12 carbon atoms, a solvent and a carboxylic acid having at least 4 carbon atoms. The preferred solvent is a combination of butyrolactone with ethylene glycol and the preferred triakylamines are tripropylamine, tributylamine and N,N-diisopropylethylamine.
Claims34
An electrolyte composition for electrolytic capacitors comprising:
- N,N-diisopropylethylamine, a solvent, and a carboxylic acid wherein the carboxylic acid is a straight chain alkyl dicarboxylic acid or a branched chain alkyl di- or poly-basic acid in which the CO.sub.2 H groups of said carboxylic acid are separated by at least 2 carbon atoms.
An electrolyte composition for electrolytic capacitors comprising:
- N,N-diisopropylethylamine, a solvent, and a carboxylic acid wherein the carboxylic acid is selected from the group consisting of a C.sub.36 dimer acid and a C.sub.54 trimer acid, and mixtures thereof.
An electrolyte composition for electrolytic capacitors comprising:
- N,N-diisopropylethylamine, a solvent, and a carboxylic acid wherein the carboxylic acid is selected from the group consisting of a C.sub.21 diacid and a C.sub.21 polyacid.
Dependencies are inferred from the claim text.