Method of producing diethylene-glycol tert-butyl ether using isobutylene and diethylene glycol
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jun 30, 2011
app pub date -
Dec 31, 2009
filing date -
Dec 31, 2009
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Abstract
The present invention fabricates diethylene-glycol tert-butyl ether (DEGtBE) by using isobutylene and diethylene glycol (DEG) coordinated with an acidic cation exchanged resin as catalyst. Through two stages of vacuum distillations, highly selective and pure DEGtBE is produced. Moreover, a byproduct of diethylene-glycol di-tert-butyl ether (DEGDtBE) can be recycled.
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