| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing dioxyethylene ether of a bisphenol, which is directly produced without purification and has an extremely lower content of an adduct of the bisphenol with 1 mol of ethylene oxide and an adduct of the bisphenol with 3 mols of ethylene oxide than that in a conventional method. SOLUTION: The method for producing dioxyethylene ether of a bisphenol (A) through a reaction of adding ethylene oxide to a bisphenol comprises using a quaternary ammonium salt as a catalyst, performing direct production without purification and achieves a content of an adduct of the bisphenol with 1 mol of ethylene oxide of ≤0.1 wt.% and a content of an adduct of the bisphenol with 3 mol of ethylene oxide of ≤5.0 wt.%. COPYRIGHT: (C)2008,JPO&INPIT
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