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:
Jan. 16, 2024
Filed:
Mar. 17, 2021
Versalis S.p.a., San Donato Milanese, IT;
Guido Pampaloni, Pontedera, IT;
Anna Sommazzi, Novara, IT;
Giovanni Ricci, Parma, IT;
Francesco Masi, S. Angelo Lodigiano, IT;
Giuseppe Leone, Milan, IT;
Versalis S.p.A., San Donato Milanese, IT;
Abstract
An oxo-nitrogenated iron complex having general formula (I) or (II) wherein: Rand Ridentical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C-C, preferably C-C, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R, identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C-C, preferably C-C, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; Xand X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine; or are selected from linear or branched C-C, preferably C-C, alkyl groups, —OCORgroups or —ORgroups wherein Ris selected from linear or branched C-C, preferably C-C, alkyl groups. Said oxo-nitrogenated iron complex having general formula (I) or (II) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.