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:
Jun. 16, 1998
Filed:
Nov. 18, 1996
Junichi Imuta, Yamaguchi, JP;
Junji Saito, Yamaguchi, JP;
Takashi Ueda, Yamaguchi, JP;
Yoshihisa Kiso, Yamaguchi, JP;
Akira Mizuno, Yamaguchi, JP;
Masaaki Kawasaki, Yamaguchi, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
The novel transition metal compound of the invention is represented by the following formula: ##STR1## wherein R.sup.1 and R.sup.2 are each a hydrogen atom or a hydrocarbon group of 1 to 3 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom; and Y is a divalent silicon-containing group selected from the group consisting of dimethylsilylene, diphenylsilylene and methylphenylsilylene. The transition metal compound is useful for an olefin polymerization catalyst with which a propylene (co)polymer having specific structure is prepared.