PURIFICATION OF EPOXY COMPOUND

PURPOSE:To obtain an epoxy compound having a reduced hydrolyzable halogen content without raising epoxy equivalent, by heating an epoxy compound obtained from a phenol and epihalohydrin under a specific condition. CONSTITUTION:First a monohydric or polyhydric phenol and an epihalohydrin are subjecte...

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Bibliographic Details
Main Authors MURATA YASUYUKI, TANAKA RYOHEI, KONISHI NARIKO, NISHIZUKA MAKOTO
Format Patent
LanguageEnglish
Published 19.07.1988
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
HETEROCYCLIC COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:PURPOSE:To obtain an epoxy compound having a reduced hydrolyzable halogen content without raising epoxy equivalent, by heating an epoxy compound obtained from a phenol and epihalohydrin under a specific condition. CONSTITUTION:First a monohydric or polyhydric phenol and an epihalohydrin are subjected to addition reaction and to ring closure reaction to give an epoxy compound. Then, the epoxy compound is heat-treated in the presence of an aprotic polar solvent (preferably dimethyl sulfoxide), an alcohol (preferably ethanol or isopropanol) and an alkaline metallic hydroxide (e.g. NaOH, etc.) at 30-100 deg.C. Removal of salts as by-products and the alkaline metallic hydroxide is preferably carried out by adding a hydrophobic solvent to the reaction product, neutralizing with sodium primary phosphate, etc., then washing the neutralized salts with water and distilling under reduced pressure to remove the solvent.
Bibliography:Application Number: JP19870005037