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:
Apr. 12, 2005
Filed:
May. 24, 2001
Kunihiko Tashino, Chigasaki, JP;
Isa Nishiyama, Chigasaki, JP;
Takuma Yoshida, Chigasaki, JP;
Yukihiro Suzuki, Chigasaki, JP;
Hayashi Ogawa, Chigasaki, JP;
Maki Sato, Chigasaki, JP;
Kunihiko Tashino, Chigasaki, JP;
Isa Nishiyama, Chigasaki, JP;
Takuma Yoshida, Chigasaki, JP;
Yukihiro Suzuki, Chigasaki, JP;
Hayashi Ogawa, Chigasaki, JP;
Maki Sato, Chigasaki, JP;
Toho Titanium Co., Ltd., Chigasaki, JP;
Abstract
A solid catalyst component for olefin polymerization characterized by being formed from (a) a magnesium compound, (b) titanium tetrachloride, (c) a phthalic diester and a derivative thereof, and either (d) a hydroxylated hydrocarbon compound (phenol, etc.) represented by a specific formula or (d) a mercapto-containing hydrocarbon compound (thiophenol, etc.) represented by a specific formula. With a catalyst obtained from this solid catalyst component, an olefin polymer can be obtained in extremely high yield. In particular, a propylene polymer which retains high stereoregularity can be obtained in extremely high yield.