SEPARATOR FOR ALUMINUM ELECTROLYTIC CAPACITOR AND ALUMINUM ELECTROLYTIC CAPACITOR
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United States of America Patent
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app pub date -
Jun 19, 2015
filing date -
Dec 20, 2012
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Abandoned
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Abstract
A separator is provided for an aluminum electrolytic capacitor includes a porous cellulose film having excellent impedance characteristics and short-circuit resistance characteristics, and an aluminum electrolytic capacitor is also provided using the separator. The porous cellulose film is formed of dissolved and regenerated cellulose without forming a cellulose derivative. The regenerated cellulose is obtained by forming in a film form a cellulose solvent obtained by dissolving cellulose in an amino oxide solvent, immersing the resulting cellulose solvent in water or a poor solvent of the amino oxide solvent so as to coagulate and regenerate the cellulose, removing the cellulose from the amino oxide solvent, and drying the resulting cellulose.
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