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:
Mar. 27, 1984
Filed:
Jun. 01, 1982
Applicant:
Inventors:
Avraham M Baniel, Jerusalem, IL;
Aharon M Eyal, Kibbutz Ramat Rachel, IL;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
4233 / ; 4233 / ; 423462 ; 423501 ;
Abstract
The invention provides a process for removing fluorine compounds from aqus phosphoric acid containing the same, which process comprises contacting the phosphoric acid with a water insoluble extractant comprising phosphoric acid and an oil soluble amine, the amine being substantially water insoluble both in free and in salt form and the extractant being substantially free of fluorine, sulfate and metal impurities. The invention also provides an extractant for use in the above process comprising an oil soluble amine, which amine is substantially water insoluble both in free and in salt form and a phosphoric acid.