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. 27, 2005
Filed:
Dec. 17, 2003
Leonardo Dalloro, Bollate, IT;
Alberto Cesana, Carate Brianza, IT;
Roberto Buzzoni, San Mauro Torinese, IT;
Franco Rivetti, Milan, IT;
Caterina Rizzo, San Donato Milanese, IT;
Virginio Arrigoni, Milan, IT;
Carlo Perego, Carnate, IT;
Leonardo Dalloro, Bollate, IT;
Alberto Cesana, Carate Brianza, IT;
Roberto Buzzoni, San Mauro Torinese, IT;
Franco Rivetti, Milan, IT;
Caterina Rizzo, San Donato Milanese, IT;
Virginio Arrigoni, Milan, IT;
Carlo Perego, Carnate, IT;
Polimeri Europa S.p.A., Brindisi, IT;
Enitecnologie S.p.A., San Donato Milanese, IT;
Abstract
A process is described for the contemporaneous preparation of mesitylene and durene, characterized in that mesitylene and durene are obtained exclusively starting from pseudo-cumene without the use of any further chemical compound, operating in continuous, at a temperature ranging from 210 to 400° C., at a pressure ranging from 1 to 50 bar, with a weight space velocity ranging from 0.1 to 20 hoursand in the presence of a catalyst based on crystalline metal-silicates in acid form. After the recovery of mesitylene and durene from the reaction raw product, some of the remaining components of the raw product itself are recycled and fed to the reactor together with the pseudo-cumene.