A PROCESS FOR MAKING BUTYL ETHERS OF GLYCOLS

摘要

A PROCESS FOR THE PRODUCTION OF N-BUTYL GLYCOL ETHER WHICH COMPRISES:I. FORMING A MIXTURE OF N-BUTENYL GLYCOL ETHER AND SECONDARY BUTENYL GLYCOL ETHER BY REACTING BUTADIENE WITH A SATURATED ALIPHATIC GLYCOL IN THE PRESENCE OF A HETEROGENEOUS CATALYST WHICH IS MODIFIED BY THE ADDITION OF AT LEAST ONE COUNTERION SELECTED FROM THE GROUP CONSISTING OF: AN ALKYL PYRIDINIUM QUATERNARY AMMONIUM, QUATERNARY ARSONIUM AND QUATERNARY PHOSPHONIUM;II. SEPARATING THE N-BUTENYL GLYCOL ETHER AND SECONDARY BUTENYL GLYCOL ETHER FORMED IN STEP I), AND III. HYDROGENATING THE N-BUTENYL GLYCOL ETHER SEPARATED IN STEP II) IN THE PRESENCE OF A CATALYST TO THE CORRESPONDING N-BUTYL GLYCOL ETHER.FIG.1