Olefin polymerization catalyst and process for olefin polymerization
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United States of America Patent
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Mar 9, 1999
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N/A
app pub date -
Oct 20, 1997
filing date -
Sep 21, 1994
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Expired
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Abstract
Disclosed is an olefin polymerization catalyst comprising (A) a transition metal compound represented by the formula (I) R.sup.1 R.sup.2 MX.sub.2 (wherein M is a transition metal atom, R.sup.1 and R.sup.2 are each a cycloalkadienyl group having an aryl group and a saturated hydrocarbon group as substituents, and X is a halogen atom or the like) and (B) at least one compound selected from (b1) an organoaluminum oxy-compound, (b2) an ionized ionic compound and (b3) an organoaluminum compound. Also disclosed is a process for olefin polymerization comprising polymerizing an olefin in the presence of the above-mentioned catalyst. According to the present invention, an olefin copolymer having a crystallization temperature and a melting point both lower than those of the conventional copolymers can be prepared in the case of that the feeding amount of comonomer is smaller than those conventionally used.
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