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. 18, 2007
Filed:
Aug. 14, 2003
Grant Berent Jacobsen, Bouc Bel Air, FR;
Brian Stephen Kimberley, Bouche du Rhone, FR;
Sergio Mastroianni, Martigues, FR;
Michael John Taylor, Sunbury on Thames, GB;
Grant Berent Jacobsen, Bouc Bel Air, FR;
Brian Stephen Kimberley, Bouche du Rhone, FR;
Sergio Mastroianni, Martigues, FR;
Michael John Taylor, Sunbury on Thames, GB;
B.P. Chemicals Limited, Middlesex, GB;
Abstract
A method for the preparation of a supported transition metal catalyst system which includes the steps of: (i) mixing together in a suitable solvent (a) an aluminoxane and (b) an ionic activator containing a cation and an anion, wherein the anion has at least one substituent containing a moiety having an active hydrogen, (ii) addition of the mixture from step (i) to a support material, and (iii) addition of a transition metal compound in a suitable solvent. The use of tetraisobutylaluminoxane as the aluminoxane results in a more stable activity profile and improved polymer properties in particular melt strength.