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:
Nov. 02, 2010
Filed:
Apr. 25, 2007
Cláudia Cristiana Cassol, Porto Alegre, BR;
Bauer Costa Ferrera, Porto Alegre, BR;
Gunter Ebeling, Porto Alegre, BR;
Jairton Dupont, Porto Alegre, BR;
Cláudia Cristiana Cassol, Porto Alegre, BR;
Bauer Costa Ferrera, Porto Alegre, BR;
Gunter Ebeling, Porto Alegre, BR;
Jairton Dupont, Porto Alegre, BR;
Petroleo Brasileiro S.A. - Petrobras, Rio De Janeiro, BR;
Abstract
The reaction of N-alkylimidazol with alkyl sulfonates, at room temperature, favors the production of 1,3-dialkylimidazolium alkane-sulfonates as crystalline solids at high yields. The alkane-sulfonate anions may be easily substituted by a series of other anions [BF, PF, PF(CFCF), CFSOand (CFSO)N] through simple anion, salt, or acid reactions in water at room temperature. The extraction with dichloromethane, filtration, and evaporation of the solvent, allows the production of the desired ionic liquids at a yield of 80-95%. The purity of these ionic liquids (in some cases >99.4%) is performed using the intensity ofC satellite signals from the magnetic resonance spectrums of the N-methyl imidazolium group as an internal standard.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile