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:
May. 18, 2021
Filed:
Mar. 23, 2017
Toho Titanium Co., Ltd., Chigasaki, JP;
TOHO TITANIUM CO., LTD., Kanagawa, JP;
Abstract
There is provided a novel alkoxymagnesium which, when used as a constituent of a solid catalyst component for olefin polymerization to polymerize an olefin, may reduce the formation rate of a fine powder and may form a polymer having an excellent particle size distribution under high polymerization activity. The alkoxymagnesium is characterized by comprising secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 μm and by having a ratio represented by the average particle diameter of the primary particles/the average particle diameter of the secondary particles of 0.1 or less, a total pore volume of 0.5 to 1 cm/g, a specific surface area of less than 50 m/g, and a particle size distribution index (SPAN) 1 or less.