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:
Jan. 30, 2001
Filed:
Dec. 12, 1998
Applicant:
Inventors:
Fazle Sibtain, Calgary, CA;
Antonio Pietro Nicola, Calgary, CA;
Stephen John Brown, Calgary, CA;
Linda Jean Santry, Georgetown, CA;
Assignee:
NOVA Chemicals (International) S.A., Villars-sur-Gl{circumflex over (a)}ne, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/38 ;
U.S. Cl.
CPC ...
C08F 2/38 ;
Abstract
A particulate deactivator is used to pacify halogen-containing catalyst residues from a medium pressure solution polymerization process. The deactivator is added post-reactor preferably in the form of a suspension. The particulate deactivator may also be used in conjunction with a secondary, soluble deactivator.