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. 03, 1988
Filed:
Oct. 06, 1986
Applicant:
Inventors:
E Philip Horwitz, Naperville, IL (US);
Ralph C Gatrone, Naperville, IL (US);
Renato Chiarizia, Rome, IT;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C07F / ; C07F / ; C07F / ;
U.S. Cl.
CPC ...
252184 ; 252364 ; 252631 ; 558150 ;
Abstract
A method for removing acidic contaminants from neutral mono and bifunctional organophosphorous extractants by contacting the extractant with a macroporous cation exchange resin in the H.sup.+ state followed by contact with a macroporous anion exchange resin in the OH.sup.- state, whereupon the resins take up the acidic contaminants from the extractant, purifying the extractant and improving its extraction capability.