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, 2003
Filed:
Mar. 19, 2002
Applicant:
Inventors:
Kunihiko Tashino, Kanagawa, JP;
Yukihiro Suzuki, Kanagawa, JP;
Isa Nishiyama, Kanagawa, JP;
Hayashi Ogawa, Kanagawa, JP;
Takuma Yoshida, Kanagawa, JP;
Motoki Hosaka, Kanagawa, JP;
Maki Sato, Kanagawa, JP;
Assignee:
Toho Titanium Co., Ltd., Chigasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/976 ;
U.S. Cl.
CPC ...
C07C 6/976 ;
Abstract
A phthalic acid diester derivative represented by a specific formula and an electron donor used in an olefin polymerization catalyst containing the phthalic acid diester derivative as an effective component. The electron donor can produce polymers with a high stereoregularity at an extremely high polymerization activity and high yield, and exhibit a high response to hydrogen.