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. 13, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Daisuke Fukuoka, Kuga-gun, JP;
Takashi Tashiro, Kuga-gun, JP;
Koji Kawaai, Kuga-gun, JP;
Junji Saito, Kuga-gun, JP;
Takashi Ueda, Kuga-gun, JP;
Yoshihisa Kiso, Kuga-gun, JP;
Junichi Imuta, Kuga-gun, JP;
Terunori Fujita, Kuga-gun, JP;
Masatoshi Nitabaru, Kuga-gun, JP;
Masayasu Yoshida, Kuga-gun, JP;
Assignee:
Mitsui Petrochemical Industries Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
502117 ; 502152 ; 526127 ; 526160 ; 526943 ; 556-9 ; 556 52 ; 556 53 ;
Abstract
The novel transition metal catalyst of the invention is represented by the following formula (I): ##STR1## wherein M is a zirconium or hafnium; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom; and Y is a divalent hydrocarbon group, a divalent silicon-containing group.