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. 01, 1991
Filed:
Aug. 21, 1989
Applicant:
Assignee:
Indian Petrochemicals Corporation Limited, Gujarat, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210669 ; 210685 ;
Abstract
There is provided a process for the regeneration and/or purification of contaminated process sulfolane or spent sulfolane. The process includes passing contaminated or spent sulfolane through a pair of columns arranged in series, with the first of the columns containing cation exchanger resin and the second containing anion exchanger resin. The contact between the sulfolane and the ion exchange resins is effected at a temperature of from 20.degree. to 80.degree. C.