Olefin polymerization catalyst and process for olefin polymeriza

Details Olefin polymerization catalyst and process for olefin polymeriza Olefin polymerization catalyst and process for olefin polymeriza

1997-10-20

1999-03-09

Bell, Mark L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502108, 502117, 502152, 526160, 526943, 556 53, B01J 3100, B01J 3700, C08F 402, C08F 460

Patent

active

058800565

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.

REFERENCES:
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patent: 5132262 (1992-07-01), Rieger et al.
patent: 5252529 (1993-10-01), Ueda et al.
patent: 5279999 (1994-01-01), DeBoer et al.
patent: 5308816 (1994-05-01), Tsutsui et al.

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