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:
May. 13, 2003
Filed:
Nov. 06, 2001
Applicant:
Inventors:
Gacem Benazouzz, Martigues, FR;
Michel Camoin, Port de Bouc, FR;
Laurent Coupier, Sausset les Pins, FR;
Jean-Pierre Isnard, Martigues, FR;
Frederic Robert Marie Michel Morterol, Sausset les Pins, FR;
John Paul McNally, Simiane Collongue, FR;
Renaud Viguier, Lavera, FR;
Assignee:
BP Chemicals Limited, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/34 ;
U.S. Cl.
CPC ...
C08F 2/34 ;
Abstract
A process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a metallocene catalyst in that the polymerization is preformed in the presence of a process aid additive selected from at least one of 1) a polysulfone copolymer, 2) a polymeric polyamine, or 3) an oil-soluble sulfonic acid.