Substituted indenyl ring containing metallocene catalyst for propylene polymerization process
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsDaisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Junichi Imuta, Terunori Fujita, Masatoshi Nitabaru, Masayasu Yoshida
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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.
Claims2
A propylene homo- or copolymerization transition metal compound catalyst component comprising a transition metal compound represented by the following formula (I):
- ##STR21## wherein M is zirconium;
- R.sup.1 is an alkyl group of 2 to 4 carbon atoms;
- R.sup.2 is a member selected from the group consisting of phenyl, naphthyl, anthracenyl and phenanthryl;
- X.sup.1 and X.sup.2 are each a chlorine atom;
- and
- Y is a dimethyl silyl group.
A propylene homo- or copolymerization transition metal compound catalyst component comprising a transition metal compound represented by the following formula (I):
- ##STR22## wherein M is a transition metal selected from the group consisting of zirconium and hafnium;
- R.sup.1 is ethyl;
- R.sup.2 is a member selected from the group consisting of phenyl, naphthyl, anthracenyl and phenanthryl;
- X.sup.1 and X.sup.2 are each a halogen atom;
- and
- Y is a di-C.sub.1 -C.sub.3 -alkyl silyl group.
Dependencies are inferred from the claim text.