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:
Sep. 05, 2017
Filed:
Dec. 20, 2011
Francesco Masi, Sant'Angelo Lodigiano-Lodi, IT;
Francesco Menconi, Massa Macinaia, IT;
Giuseppe Conti, Padenghe Sul Garda, IT;
Mario Polesello, Ferrara, IT;
Alberto Zanellato, Castel d'Ario Mantova, IT;
Francesco Masi, Sant'Angelo Lodigiano-Lodi, IT;
Francesco Menconi, Massa Macinaia, IT;
Giuseppe Conti, Padenghe Sul Garda, IT;
Mario Polesello, Ferrara, IT;
Alberto Zanellato, Castel d'Ario Mantova, IT;
Versalis S.P.A., , IT;
Abstract
A precursor for the formation of catalysts for the (co)polymerization of α-olefins, comprising titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, obtained with a process comprising treatment with a siloxane compound. Said solid precursor, used in combination with a suitable co-catalyst in high-temperature (co)polymerization processes of α-olefins, shows an improved productivity, a high incorporation of co-monomers in the copolymerization of ethylene and an increased thermal stability with respect to the systems so far in use.