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:
Apr. 18, 2000
Filed:
Jul. 14, 1997
Applicant:
Inventors:
Frederick Yip-Kwai Lo, Piscataway, NJ (US);
Robert I Mink, Warren, NJ (US);
Thomas Edward Nowlin, Cranbury, NJ (US);
Sandra Denise Schregenberger, Neshanic, NJ (US);
Pradeep Pandurang Shirodkar, Belle Mead, NJ (US);
Assignee:
Mobil Corporation, Fairfax, VA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
502113 ; 526114 ; 526160 ; 526943 ; 526127 ;
Abstract
A catalyst composition is described for preparing a high activity catalyst in silica which produces, in a single reactor, polyethylene with a broad or bimodal molecular weight distribution. The catalyst is prepared from the interaction of silica, previously calcined at 600.degree. C., with dibutylmagnesium, 1-butanol and titanium tetrachloride and a solution of methylalumoxane and ethylenebis[1-indenyl]zirconium dichloride.