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:
Dec. 02, 1980
Filed:
Jan. 29, 1979
Lawrence M Fodor, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A catalyst system is made up of a catalyst and a cocatalyst. The catalyst component is made by intensely mixing a titanium trihalide component with triaryl phosphite and aluminum trihalide adjuvants. The cocatalyst is an organoaluminum compound. An example of such a system is a ball milled mixture of TiCl.sub.3..sup.1/ 3AlCl.sub.3, triphenyl phosphite, and aluminum trichloride as the catalyst and diethylaluminum chloride as the cocatalyst. Such catalyst systems give both high productivity and low solubles in the polymerization of propylene. The catalytic activity and/or stereospecificity of the catalyst can be enhanced by heat treatment at a moderate temperature subsequent to milling the mixture.