Process for production of highly pure quaternary ammonium salt

Details Process for production of highly pure quaternary ammonium salt Process for production of highly pure quaternary ammonium salt

2007-09-19

2011-10-04

Gonzalez, Porfirio Nazario (Department: 1621)

Compositions

Electrolytes for electrical devices

C564S296000

Reexamination Certificate

active

08029690

ABSTRACT:
A process for preparing a highly pure quaternary ammonium salt comprising:(1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and(2) removing the tertiary amine and water produced from the system.

REFERENCES:
patent: 2004/0130852 (2004-07-01), Matsumoto et al.
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patent: 2000-26473 (2000-01-01), None
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patent: 2004-186246 (2004-07-01), None
patent: 2006-143648 (2006-06-01), None
International Search Report issued Dec. 4, 2007 in the International (PCT) Application of which the present application is the U.S. National Stage.

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