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:
Oct. 01, 2019
Filed:
Sep. 30, 2014
Ximo Ag, Horw/Lucerne, CH;
Georg Emil Frater, Ebnat-Kappel, CH;
Jeno Varga, Horw/Lucerne, CH;
Christophe Coperet, Zurich, CH;
Victor Mougel, Zurich, CH;
Matthew P. Conley, Zurich, CH;
XiMo AG, Horw/Lucerne, CH;
Abstract
Method of making an immobilized tungsten catalyst comprising or consisting of (≡SiO)W(═O)(═CRR)(Ror R)(L), comprising at least the following step (i): (i) reacting silica (Si02) with a tungsten oxo alkylidene complex comprising or consisting of (R)(R)W(═O)(═CRR)(L), preferably wherein ═CRRis selected from ═CHC(CH)or ═CH(C(CH))CHand Rand Rare independently selected from pyrrol-1-yl, 2,5-dimethylpyrrol-1-yl, or 2,5-diphenylpyrrol-1-yl, or —OR, wherein R is a six membered or 10 membered aryl ring, optionally substituted.