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:
Jun. 30, 2015
Filed:
Jun. 16, 2010
Gianni Collina, Ferrara, IT;
Marco Ciarafoni, Ferrara, IT;
Ofelia Fusco, Ferrara, IT;
Benedetta Gaddi, Ferrara, IT;
Monica Galvan, S.M. Maddalena, IT;
Giampiero Morini, Padua, IT;
Roberto Pantaleoni, Ferrara, IT;
Francesca Verrocchio, Bologna, IT;
Gianni Collina, Ferrara, IT;
Marco Ciarafoni, Ferrara, IT;
Ofelia Fusco, Ferrara, IT;
Benedetta Gaddi, Ferrara, IT;
Monica Galvan, S.M. Maddalena, IT;
Giampiero Morini, Padua, IT;
Roberto Pantaleoni, Ferrara, IT;
Francesca Verrocchio, Bologna, IT;
Basell Poliolefine Italia S.r.l., Milan, IT;
Abstract
A process for the preparation of propylene polymer compositions carried out in the presence of a catalyst system comprising (a) a solid catalyst component having average particle size ranging from 15 to 80 μm comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates and the other being selected from 1,3 diethers, (b) an aluminum alkyl and optionally (c) an external electron donor compound, and comprising the following steps: