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:
Mar. 01, 2005
Filed:
Dec. 04, 2001
Arrigo Arletti, Finale Emilia, IT;
Anna Fait, Ferrara, IT;
Arrigo Arletti, Finale Emilia, IT;
Anna Fait, Ferrara, IT;
Basell Poliolefine Italia S.p.A., Milan, IT;
Abstract
A process for preparing spherical support particles used in the preparation of catalytic components for the polymerization of olefins by (a) forming an emulsion of an adduct of a Mg dihalide and a Lewis base compound in a liquid medium, and (b) cooling the emulsion by transferring it into a cooling bath containing a cooling liquid in motion wherein the cooling liquid is moving inside a tubular zone and the ratio V/Vof the velocity (V) of the emulsion coming from step (a) to the velocity of the cooling liquid (V) of step (b) is between 0.25 and 4. The resulting spherical support particles have a very narrow size distribution and particularly regular morphology.