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. 19, 1996
Filed:
Aug. 08, 1995
Kyle L Preston, Port Arthur, TX (US);
Texaco Chemical Inc., White Plains, NY (US);
Abstract
MTBE, prepared by reacting MeOH with TBA to form a primary etherification reaction product, is distilled in a first distillation column to provide a first lower boiling distillation fraction comprising methyl tertiary butyl ether, isobutylene, methanol, dimethyl ether, and the first lower boiling fraction is water washed to provide an overhead extract that is distilled in a second distillation column to provide a second lower boiling distillation fraction comprising isobutylene, dimethyl ether and water, which is dewatered to provide a feed fraction comprising isobutylene and dimethyl ether that is reacted with less than an equivalent amount of MeOH to provide a secondary reaction product comprising MTBE, less than 0.5 wt. % of MeOH, isobutylene and contaminants including TBA and dimethyl ether, and the secondary reaction product is recycled to the second distillation column.