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:
Jan. 15, 2008
Filed:
Jan. 28, 2005
Vito Tortelli, Milan, IT;
Stefano Millefanti, Como, IT;
Pierangelo Calini, Milan, IT;
Solvay Solexis S.p.A., Milan, IT;
Abstract
A process for preparing (per)fluorohalogenethers having general formula: wherein:A and A', equal to our different from each other, are selected among Cl, Br, H; m=1, 2; n=0, 1; Ris a fluorinated substituent, preferably perfluorinated, selected from the following groups: C-Clinear or branched alkylic; C-Ccycloalkylic; aromatic, C-Carylalkyl; heterocyclic or C-C-alkylheterocyclic; preferably perfluoroalkyl; R′ is as defined in the application;by reaction of carbonyl compounds having formula: wherein:Rand n are as above; u=0, 1; R′ is as defined in the application;in liquid phase, with elemental fluorine and with olefinic compounds of formula:CAF═CA′F  (III)wherein A and A′ are as above,at temperatures from −120° C. to −20° C., preferably from −100° C. to −40° C., optionally in the presence of an inert solvent under the reaction conditions.