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. 17, 1980
Filed:
Mar. 23, 1979
Applicant:
Inventors:
Ronald J Allain, Richmond, TX (US);
David G Braithwaite, Village of Golf, FL (US);
Ansell L Reid, Sugar Land, TX (US);
Assignee:
Nalco Chemical Co., Oak Brook, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423497 ;
Abstract
A two-step process for removing boron impurities from aqueous solutions of magnesium chloride which comprises treating these solutions with more than 3 moles of methanol in the presence of an acid catalyst to form trimethyl borate and then removing the trimethyl borate and excess methanol from such solutions by means of distillation and then extracting from the thus-treated solutions any remaining boron compounds by means of a hydrocarbon liquid. The hydrocarbon liquid extraction step may be used prior to the methanol treatment.