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:
Sep. 23, 1980
Filed:
Apr. 09, 1979
Kirby Lowery, Jr, Lake Jackson, TX (US);
Donald F Birkelbach, Angleton, TX (US);
Randall S Shipley, Alvin, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins, particularly higher olefins, are prepared by reacting (A) tetravalent titanium compounds such as titanium tetraalkoxide, (B) an organoaluminum compound, (C) an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organo aluminum compound such as triethyl aluminum and, (D) as a halide source, a tetravalent tin compound such as tin tetrachloride. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts provide higher efficiencies than those catalysts employing HCl as the halide source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile