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:
Aug. 04, 2020
Filed:
Aug. 03, 2016
Basell Poliolefine Italia S.r.l., Milan, IT;
Giampiero Morini, Ferrara, IT;
Massimo Covezzi, Ferrara, IT;
Tiziano Dall'occo, Ferrara, IT;
Dario Liguori, Ferrara, IT;
Fabrizio Piemontesi, Ferrara, IT;
Gianni Vitale, Ferrara, IT;
Basell Poliolefine Italia S.r.l., Milan, IT;
Abstract
A gas-phase process for the homopolymerization or copolymerization of propylene with other olefins, including carrying out the polymerization in the presence of a catalyst system made from or containing: (a) a solid catalyst component made from or containing Mg, Ti, halogen, an electron donor selected from 1.3-diethers and an olefin polymer in a specific amount; (b) an aluminum alkyl compound and (c) an external electron donor (ED) compound, wherein components (b) and (c) being employed in amounts such that the Al/(ED) molar ratio ranges from about 2 to about 200.