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, 2011
Filed:
Dec. 11, 2007
Giampiero Morini, Padua, IT;
Tiziano Dall'occo, Ferrara, IT;
Dario Liguori, Forino, IT;
Joachim T. M. Pater, Ferrara, IT;
Gianni Vitale, Ferrara, IT;
Giampiero Morini, Padua, IT;
Tiziano Dall'Occo, Ferrara, IT;
Dario Liguori, Forino, IT;
Joachim T. M. Pater, Ferrara, IT;
Gianni Vitale, Ferrara, IT;
Basell Poliolefine Italia s.r.l., Milan, IT;
Abstract
A catalyst component comprising Ti, Mg, Al, Cl, and optionally ORgroups in which Ris a C1-C20 hydrocarbon group, optionally containing heteroatoms, up to an amount such as to give a molar OR/Ti ratio lower than 0.5, characterized by the fact that substantially all the titanium atoms are in valence state of 4, that the porosity (P), measured by the mercury method and due to pores with radius equal to or lower than 1 μm, is at least 0.3 cm/g, and by the fact that the Cl/Ti molar ratio is lower than 29. The said catalysts are characterized by high morphological stability under the low molecular weight ethylene polymerization conditions while at the same time maintaining characteristics of high activity.