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:
Sep. 30, 2014
Filed:
Jul. 29, 2011
Daan Dewachter, Mechelen, BE;
Alain Brusselle, Wilrijk, BE;
Daan Dewachter, Mechelen, BE;
Alain Brusselle, Wilrijk, BE;
Total Research & Technology Feluy, Seneffe (Feluy), BE;
Abstract
The present invention relates to a method for feeding metallocene catalyst slurry to an olefin polymerization loop reactor () using a positive displacement device () positive displacement device comprising a first chamber and a second chamber, each chamber having an inlet and an outlet and each chamber comprising an ball arranged between the walls of said chamber, wherein said chambers are connected to each other by a pump chamber operably connected to a pump, wherein, the difference between the diameter of said ball and the diameter of said chamber is comprised between 5 to 200 times the average particle size (d50) of said catalyst.