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:
Oct. 03, 2000
Filed:
Jul. 28, 1997
Applicant:
Inventors:
Takeshi Ebara, Ichihara, JP;
Koji Mizunuma, Kisarazu, JP;
Toshio Sasaki, Ichihara, JP;
Kazuki Wakamatsu, Sodegaura, JP;
Junichi Kimura, Toyonaka, JP;
Yoichi Obata, Ichihara, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502125 ; 502126 ; 502127 ; 5261283 ; 526128 ;
Abstract
A catalyst system for polymerizing olefins is obtainable from (A) a solid component containing (A) magnesium, titanium and halogen and an electron donative compound which is an ether or ester; (B) an organoaluminum compound, and (C) at least two electron donative compounds, including an (.alpha.) and (.beta.) compound, wherein the total amount (C) compounds is 0.01 to 1 mole per mole of (B).