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:
Sep. 19, 2017
Filed:
Jan. 19, 2015
Charabot SA, Grasse, FR;
Institut National Polytechnique DE Toulouse, Toulouse, FR;
Institut National DE LA Recherche Agronomique, Paris, FR;
Zephirin Mouloungui, Toulouse, FR;
Christophe Maruejouls, Cugnaux, FR;
Sophie Lavoine-Hanneguelle, Mouans-Sartoux, FR;
CHARABOT SA, Grasse, FR;
INSITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse, FR;
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, Paris, FR;
Abstract
A method for synthesizing dimethyl carbonate from methanol and urea, in which a saline ureic medium is used that includes at least one inorganic salt selected from the group made up of zinc (Zn) (II) chloride, tin (Sn) chlorides and iron (Fe) (III) chloride, characterized in that: methanol, in the presence of a catalytic composition, is placed in contact with the saline ureic medium that is at least partially liquid at a temperature referred to as synthesis temperature, which is higher than 140° C., such that reaction vapors are produced; the reaction vapors are condensed, and a condensate of the reaction vapors is collected, including dimethyl carbonate; the method is carried out at atmospheric pressure. A method for enriching and purifying dimethyl carbonate is also described.