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:
Dec. 06, 2022
Filed:
Jan. 18, 2018
Versalis S.p.a., San Donato Milanese, IT;
Anna Sommazzi, Novara, IT;
Guido Pampaloni, Pontedera, IT;
Giovanni Ricci, Parma, IT;
Francesco Masi, Santangelo Lodigiano, IT;
Filippo Renili, Vicolungo, IT;
Versalis S.P.A., San Donato Milanese, IT;
Abstract
Oxo-nitrogenated iron complex having general formula (I): in which: Rand R, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C-C, preferably C-C, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; Rrepresents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C-C, preferably C-Calkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they 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; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.