A process for production of an epoxidized polyether.

摘要

An epoxidized polyether containing oxytetramethylene units and having, on average, per molecule at least 0.9 epoxy groups of formula (I):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="19" wi="47" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>(in which R, and R<Sub>2</Sub>, which may be the same or different, each represents a hydrogen atom or an alkyl group) can be used to produce epoxy resins having excellent flexibility. The epoxidized polyether may be prepared by dehydrohalogenating the hydroxypolyether prepared either by polymerizing tetrahydrofuran in the presence of (A) a Lewis acid and/or an ether complex thereof, (B) an epihalohydrin and (C) a compound containing at least one hydroxy group per molecule, or by reacting a polyoxytetramethylene glycol with (D) a Lewis acid and/or an ether complex thereof and (E) anepihalohydrin.