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:
Nov. 04, 1997
Filed:
Mar. 25, 1996
Applicant:
Inventors:
Speros Peter Nemphos, League City, TX (US);
Dennis Hearn, Houston, TX (US);
Assignee:
Chemical Research & Licensing Company, Pasadena, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568698 ; 568699 ;
Abstract
A method for producing dialkyl ethers comprising feeding a stream containing a C.sub.1 to C.sub.4 alcohol to a distillation column reactor into a feed zone, contacting the stream with a fixed bed zeolite prepared as a distillation structure to form the corresponding dialkyl ether and water, and concurrently fractionating the ether product from the water and unreacted materials wherein the improvement is the addition of a small amount of hydrogen to the reaction zone to inhibit catalyst fouling and substantially increasing the catalyst life and activity.