The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1976
Filed:
Nov. 29, 1974
George Joseph Laemmle, Port Arthur, TX (US);
Kenneth Carol Rightmer, Nederland, TX (US);
Jefferson Chemical Company, Inc., Houston, TX (US);
Abstract
An improved process for preparing mono- and poly-glycol ethers by mixing and reacting an alkylene oxide and an alcohol in the presence of a catalyst containing alkali or alkaline earth cations at temperatures within the range of about 50.degree.to about 350.degree.C. under pressure of between about 30 to about 3,000 psig is disclosed. An anhydrous high boiling liquid residue, prepared by the concentration of the liquid reaction product effluent residue remaining after desired mono- and poly-glycol ethers have been separated therefrom has been found to be highly useful as the catalyst for the described process. The employment of the anhydrous high boiling liquid residue as a catalyst advantageously results in the production of liquid reaction product effluents containing relatively little, if any, undesirable glycol by-products which are difficult to separate from the desired mono- and poly-glycol ethers. In a continuous process for preparing mono- and poly-glycol ethers, the concentrated anhydrous, high boiling liquid residue of the invention can be recycled for admixture with the alkylene oxide and alcohol reactant feed streams in the reactor used as the catalyst of the reaction.