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:
Jul. 03, 1984
Filed:
May. 02, 1983
Applicant:
Inventors:
Richard G Grotyohann, Somerset, NJ (US);
Byron E Johnston, Skillman, NJ (US);
Robin Schlinger, Lakeland, FL (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
4233 / ; 4233 / ;
Abstract
This invention provides a process for removal of residual organic matter from wet process phosphoric acid purified by solvent extraction with a volatile solvent that comprises contacting said purified phosphoric acid with hydrogen peroxide at a temperature between about 100.degree. C. and about 150.degree. C., for between 1/4 hour and about 4 hours, and using a weight ratio of hydrogen peroxide to phosphoric acid between about 0.001 and about 0.05.