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:
Jul. 29, 2008
Filed:
Jan. 31, 2005
Applicants:
Gabriele Mei, Ferrara, IT;
Stefano Bertolini, Ancona, IT;
Inventors:
Gabriele Mei, Ferrara, IT;
Stefano Bertolini, Ancona, IT;
Assignee:
Basell Poliolefine Italia s.r.l., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/34 (2006.01); C08F 2/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for controlling the flowability of polymer particles flowing downward in a densified form inside a polymerization reactor, in which one or more monomers are gas-phase polymerized in the presence of a polymerization catalyst, the density of solid (Kg of polymer per mof reactor occupied by the polymer) being higher than 80% of the 'poured bulk density' of the polymer, the method being characterized in that a liquid stream is continuously fed into the polymerization reactor at a mass flow rate per unity of reactor surface higher than 30 Kg/h m.