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:
Oct. 13, 1992
Filed:
Nov. 01, 1991
Applicant:
Inventors:
Edward T Marquis, Austin, TX (US);
George P Speranza, Austin, TX (US);
Yu-Hwa E Sheu, Austin, TX (US);
William K Culbreth, III, Austin, TX (US);
David G Pottratz, Austin, TX (US);
Assignee:
Texaco Chemical Company, White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07D / ;
U.S. Cl.
CPC ...
203 63 ; 203 14 ; 203 78 ; 203 84 ; 549541 ;
Abstract
An extractive distillation agent consisting essentially of a monohydroxy alkoxyalkanol containing 5 to 8 carbon atoms is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a heavier bottoms distillation fraction containing substantially all of the monohydroxy alkoxyalkanol and water introduced into the distillation column.