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:
May. 22, 2001
Filed:
Aug. 07, 2000
Applicant:
Inventors:
Wesley Wayne McConnell, Grayslake, IL (US);
Bruce Edward Stanhope, Grayslake, IL (US);
Franz Josef Luxem, Palatine, IL (US);
Assignee:
Velsicol Chemical Corporation, Rosemont, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 6/976 ;
U.S. Cl.
CPC ...
C07C 6/976 ;
Abstract
The present invention provides a continuous series of at least 3 esterification reactions, each of which yields highly pure esters derived from benzoic and at least one alcohol selected from monohydric alcohols containing from 6 to 12 carbon atoms and dihydric alcohols containing from 2 to 8 carbon atoms. At least a portion of the esterification catalyst and high boiling impurities remaining following distillation of the desired ester are used in the reaction mixture for the next reaction of the series.