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:
Aug. 24, 1976
Filed:
Dec. 04, 1974
Joseph A Delap, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A particulate catalyst support containing titanium is heated to calcination temperature and thereafter impregnated with a .pi. bonded organochromium compound. Thereafter the chromium-containing support is reactivated, at least a portion of the reactivation occurring in the presence of oxygen. In one embodiment at least 2 percent solvent is present as the catalyst is reactivated at approximately room temperature. In an alternate embodiment the support is calcined at a temperature within the range of 1450.degree. to 1650.degree.F. Such catalysts are particularly suitable for the production of high melt index polymer from at least one mono-1-olefin containing 2 to 8 carbon atoms per molecule.