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:
Jun. 06, 1978
Filed:
Mar. 10, 1977
Applicant:
Inventors:
Raymond Wynkoop, Media, PA (US);
Oscar L Norman, Wilmington, DE (US);
Richard V Norton, Wilmington, DE (US);
Assignee:
Suntech, Inc., Wayne, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2041 / ; 204 72 ; 204263 ; 2605 / ;
Abstract
A process for the preparation of terephthalic acid which comprises electrolyzing disodium terephthalate in the anode compartment of an electrolytic cell whereby terephthalic acid product is precipitated and subsequently separated. In a preferred embodiment the disodium terephthalate is obtained by the aqueous hydrolysis of terephthalonitrile in the presence of a stoichiometric excess of sodium hydroxide.