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. 20, 1981
Filed:
Apr. 11, 1979
Hiroshi Ueno, Namekawa, JP;
Masafumi Imai, Ooi, JP;
Naomi Inaba, Ooi, JP;
Makoto Yoda, Kawagoi, JP;
Shozo Wada, Zushi, JP;
Toa Nenryo Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A supported titanium catalyst is produced by cogrinding, in combination, a magnesium halide, tetravalent titanium halide, organic acid ester, and a halogen compound selected from organic halogen compounds and halogen-containing compounds of Group IVa elements of the Periodic Table except carbon, and then treating the resulting titanium-containing solid with a hydrocarbon and/or a halogen compound as described above. The resulting supported titanium catalyst, when employed as a titanium component with an organo aluminum catalyst component for the catalyst system in a process for stereoregular polymerization of .alpha.-olefins results in unexpectedly high polymerization activity and high stereoregular polymer yielding ratios.