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:
Dec. 03, 2013
Filed:
Mar. 04, 2011
Diego Javier Guzmán Lucero, Mexico City, MX;
Natalya Victorovna Likhanova, Mexico City, MX;
Rafael Martínez Palou, Mexico City, MX;
Eugenio Alejandro Flores Oropeza, Mexico City, MX;
Jorge Froylán Palomeque Santiago, Mexico City, MX;
Diego Javier Guzmán Lucero, Mexico City, MX;
Natalya Victorovna Likhanova, Mexico City, MX;
Rafael Martínez Palou, Mexico City, MX;
Eugenio Alejandro Flores Oropeza, Mexico City, MX;
Jorge Froylán Palomeque Santiago, Mexico City, MX;
Instituto Mexicano del Petroleo, Mexico City, MX;
Abstract
A process for recovering ionic liquids comprising the steps of: providing a first ionic liquid mixture, the first ionic liquid having a halogen metallate anion, the mixture containing an organic solvent; adjusting the pH of the mixture to pH 7-10 by the addition of a base to form a first precipitate; separating the first precipitate from the mixture; removing the organic solvent from the first mixture to form a second precipitate and separating the second precipitate from the first mixture; acidifying the resulting mixture to pH 2-7 by the addition of an acid; and drying the mixture to obtain a second ionic liquid having a halogen anion.