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. 10, 2013
Filed:
Nov. 11, 2010
Pertti Elo, Jävenpää{umlaut over ( )}, FI;
Sameer Vijay, Helsinki, FI;
Kimmo Hakala, Helsinki, FI;
Soile Rautio, Porvoo, FI;
Ismo Lehtiniemi, Kellokoski, FI;
Pertti Elo, Jävenpää{umlaut over ( )}, FI;
Sameer Vijay, Helsinki, FI;
Kimmo Hakala, Helsinki, FI;
Soile Rautio, Porvoo, FI;
Ismo Lehtiniemi, Kellokoski, FI;
Borealis AG, Vienna, AT;
Abstract
The present application aims to provide a process for producing a solid polymerization catalyst component, including the steps of (A) producing a solution with a transition metal compound and a solvent; (B) solidifying a component with the transition metal compound to produce the solid polymerization catalyst component in a solidification stage; (C) recovering from the solidification stage a liquid stream containing a minor amount of the transition metal compound dissolved therein and a solid catalyst stream; and (D) recovering the transition metal component from the liquid stream, characterized in that step (D) may include concentrating the solution to produce a first product stream including the solvent and being essentially free of the transition metal compound and a second product stream including the solvent and the transition metal compound, characterized in that the concentration is conducted within a temperature range of from 0 to 100 degrees Celsius.