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:
May. 28, 2019
Filed:
Dec. 23, 2015
Versalis S.p.a., San Donato Milanese, IT;
Guido Pampaloni, Pontedera, IT;
Giovanni Ricci, Parma, IT;
Anna Sommazzi, Santa Margherita Ligure, IT;
Francesco Masi, Sant'Angelo Lodigiano, IT;
Giuseppe Leone, Milan, IT;
Versalis S.p.A., San Donato Milanese, IT;
Abstract
An oxo-nitrogenated vanadium complex having the general formula (I): in which: —R, R, R, R, R, Rand R, mutually identical or different, represent a hydrogen atom; or are selected from optionally halogenated, linear or branched C-C, preferably C-C, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; —Xand X, mutually identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or are selected from linear or branched C-C, preferably C-C, alkyl groups, —OCORgroups or —ORgroups in which Ris selected from linear or branched C-C, preferably C-C, alkyl groups; —Y is selected from ethers such as, for example, diethyl ether, tetrahydrofuran (THF), dimethoxyethane, preferably is tetrahydrofuran (THF); —n is 0 or 1. Said oxo-nitrogenated vanadium complex having the general formula (I) may advantageously be used in a catalytic system for (co)polymerizing conjugated dienes.