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:
Jun. 06, 1989
Filed:
Mar. 18, 1988
Jean-Paul Laval, Roquette, FR;
Michel Leconte, Villeurbanne, FR;
Jean Ollivier, Arudy, FR;
Emile Perez, Coulommiers, FR;
Francoise Quignard, Villeurbanne, FR;
Isabelle Rico, Ramonville Saint Agne, FR;
Abstract
Improved catalytic systems of long active duration, comprising initially (a) a tungsten compound, (b) an organometallic compound and (c) a partially or totally fluorinated organic compound. Process of stabilization of these catalytic systems, comprising dissolving (a) in an organic solvent, contacting (b) with (a), agitation and heating at 0.degree. to 100.degree. C. for 0.5 to 60 minutes, then introduction of (c) into the mixture of (a) and (b). Use of these stabilised catalytic systems for the metathesis of olefins which carry functional groups or do not carry such groups.