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. 29, 1984
Filed:
Sep. 24, 1982
Applicant:
Inventor:
Gautam R Ranade, Grand Island, NY (US);
Assignee:
Occidental Chemical Corporation, Niagara Falls, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 86 ; 2604 / ; 2604 / ; 560 11 ; 560 18 ; 560 37 ; 560 48 ; 560 52 ; 560 73 ; 560 85 ; 560139 ; 560142 ; 560146 ; 568 15 ;
Abstract
An improved process for preparing diaryl esters of a monohydroxy aromatic compound with dicarboxylic acids is disclosed, in which the esterification reaction is optimized by continuously removing water and/or other by-products of the reaction from the reactor, while supplying to the reactor a make-up amount of the monohydroxy aromatic compound containing no more than about 100 ppm of water. The make-up stream may be obtained by stripping the by-product stream of water and other by-products of the reaction.