Patent Number: 6,309,997

Title: Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and .alpha.-olefin/conjugated diene copolymers

Abstract: The invention provides olefin polymerization catalyst exhibiting excellent polymerization activities, a process for olefin polymerization using the catalyst, a novel transition metal compound useful for the catalyst, and an .alpha.-olefin/conjugated diene copolymer having specific properties. The olefin polymerization catalyst of the invention comprises (A) a transition metal compound of formula (I) or (II), and (B) an organometallic compound, an oranoaluminum oxy-compound or an ionizing ionic compound. The novel transition metal compound of the invention is a compound of formula (I) wherein M is a transition meal atom of Group 3 or 4 of the periodic table; m is an integer of 1 to 3; R.sup.1 is a hydrocarbon group, etc.; R.sup.2 to R.sup.5 are each H, a halogen, a hydrocarbon group, etc.; R.sup.6 is a halogen, a hydrocarbon group, etc.; n is a number satisfying a valence of M; and X is a halogen, a hydrocarbon group, etc. ##STR1##

Inventors: Fujita; Terunori (Kuga-gun, JP), Tohi; Yasushi (Kuga-gun, JP), Mitani; Makoto (Kuga-gun, JP), Matsui; Shigekazu (Kuga-gun, JP), Saito; Junji (Kuga-gun, JP), Nitabaru; Masatoshi (Kuga-gun, JP), Sugi; Kiyoaki (Kuga-gun, JP), Makio; Haruyuki (Kuga-gun, JP), Tsutsui; Toshiyuki (Kuga-gun, JP)

Assignee: Mitsui Chemicals, Inc.

International Classification: C07F 7/00 (20060101); C07F 9/00 (20060101); C08F 210/00 (20060101); C08F 210/12 (20060101); C07F 7/08 (20060101); C08F 110/02 (20060101); C08F 110/06 (20060101); C08F 110/00 (20060101); C08F 210/02 (20060101); C08F 210/16 (20060101); B01J 021/06 (); B01J 023/20 (); B01J 023/24 (); B01J 023/32 ()

Expiration Date: 10/30/2018