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. 30, 1980
Filed:
Mar. 28, 1979
Mitsubishi Petrochemical Company, Limited, Tokyo, JP;
Abstract
A solid catalyst component for forming, in combination with an organoaluminium compound, a catalyst for polymerization of .alpha.-olefins is provided, whereby .alpha.-olefin polymers having high stereoregularity or stereospecificity are produced in a high yield. The catalyst component is a product of contact of materials consisting essentially of a halogen-containing magnesium compound, a nucleus-substituted or unsubstituted benzoate ester and a titanium compound, and satisfies the conditions that the solid catalyst component contains 0.5 to 3.5% by weight of titanium atoms, and the highest absorption peak in the infrared absorption spectrum of the catalyst component among the absorption peaks appearing in the wave-number range of 1560 cm.sup.-1 to 1710 cm.sup.-1 appears in the wave-number region of 1665 cm.sup.-1 to 1710 cm.sup.-1.