05504172 is referenced by 231 patents and cites 18 patents.

The novel transition metal compound of the invention is represented by the following formula (I): ##STR1## wherein M is a transition metal; R.sup.1 and R.sup.2 are each a hydrogen atom, a hydrocarbon group or the like; R.sup.3 is an alkyl group of 2 to 20 carbon atoms; R.sup.4 is an alkyl group of 2 to 20 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom or the like; and Y is a divalent hydrocarbon group, a divalent silicon-containing group or the like.

The transition metal compound is useful for an olefin polymerization catalyst with which a propylene (co)polymer having specific structure is prepared.

Title
Propylene polymer, propylene copolymer, and propylene elastomer prepared using novel bridged indenyl containing metallocenes
Application Number
8/255713
Publication Number
5504172
Application Date
June 7, 1994
Publication Date
April 2, 1996
Inventor
Mikio Hashimoto
Waki
JP
Masaaki Kawasaki
Waki
JP
Akira Mizuno
Waki
JP
Yoshihisa Kiso
Waki
JP
Takashi Ueda
Waki
JP
Junichi Imuta
Waki
JP
Agent
Sherman and Shalloway
Assignee
Mitsui Petrochemical
JP
IPC
C08F 110/06
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