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. 18, 1981
Filed:
Dec. 21, 1979
Toyo Stauffer Chemical Co., Ltd., Tokyo, JP;
Abstract
A titanium tirchloride catalytic component obtained by separating it out of a solution consisting of titanium tetrachloride, an organic ether compound and an organo-aluminum compound dissolved in a solvent. The solvent is a mixture consisting of a saturated aliphatic hydrocarbon and/or an alicyclic hydrocarbon with 20 to 70% by volume of a concomitant aromatic hydrocarbon halide included therein. The organo-aluminum compound, the titanium tetrachloride and the organic ether compound are added to this mixed solvent at a solvent temperature not exceeding 55.degree. C. Following this, on the way of a process for raising the solvent temperature to 45.degree.-150.degree. C. a temporary cooling process was repeated twice or more than twice, in the cooling process of which the solvent is temporarily cooled to a temperature lower than 40.degree. C. and at the time of this cooling the organic ether compound and/or titanium tetrachloride is further added, to obtain thereby a titanium trichloride catalytic component having average particle diameter between 10 and 1000.mu.. Then homo- or co-polymerization of .alpha.-olefin is carried out by using a catalyst system comprising this catalytic component and an organo-aluminum compound.