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. 03, 2004
Filed:
Apr. 03, 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:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 3/100 ; B01J 3/700 ; C08F 4/02 ; C08F 4/60 ;
U.S. Cl.
CPC ...
B01J 3/100 ; B01J 3/700 ; C08F 4/02 ; C08F 4/60 ;
Abstract
Solid catalyst components and catalysts which contain (a) magnesium compound, (b) titanium tetrachloride, and (c) a phthalic acid diester or its derivative are useful in the synthesis of olefin polymers in high yields. Particularly, propylene polymers can be obtain in very high yields while retaining high stereoregularity.