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. 23, 1979
Filed:
Feb. 28, 1977
Applicant:
Inventors:
James J Harris, Pittsburgh, PA (US);
Richard E Hammond, Irwin, PA (US);
Assignee:
Arco Polymers, Inc., Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
2524 / ; 2524 / ; 2524 / ;
Abstract
Olefin polymerization catalysts prepared by reducing transition metal compounds with an organometallic compound are rendered highly efficient by reacting excess organometallic compound with a deactivation agent, such as hydrogen chloride, prior to activation of the catalyst with organoaluminum compounds. Catalyst efficiencies of as high as 700,000 grams of polyethylene per gram of transition metal in the catalyst have been attained at reactor pressures of only 50 psig.