Method for producing bis(fluorosulfonyl)imide
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United States of America Patent
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Dec 25, 2012
Grant Date -
Jan 12, 2012
app pub date -
Mar 31, 2010
filing date -
Mar 31, 2009
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Abstract
According to the method for producing bis(fluorosulfonyl)imide of the present invention, first, an unreacted mixed liquid is prepared by mixing a first fluorosulfonic acid with urea in a condition free of a chemical reaction between the first fluorosulfonic acid and urea. Then, the unreacted mixed liquid is dripped into a heated second fluorosulfonic acid or a heated bis(fluorosulfonyl)imide, allowing a chemical reaction between fluorosulfonic acid and urea to proceed. In this method, generation of carbon dioxide gas and heat during the chemical reaction can be controlled.
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