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EP0328348A2
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Olefin polymerization catalyst and process for the polymerization of olefins
Assignee: Mitsui Chemicals Inc
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Filing: 1989-02-07
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Granted: —
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Expires: 2009-02-07
Abstract
Abstract The invention provides an olefin polymerization catalyst formed from: [A] a compound of a transition metal belonging to Group IV B of the periodic table. [B] an aluminoxane, [C] water, and optionally [D] an organoaluminum compound, and a process for the preparation of olefin polymers using the catalyst.
Inventors
- 👤 Toshiyki Tsutsui
- 👤 Kazunori Okawa
- 👤 Akinori Toyota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/16; C08F10/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
An olefin polymerization catalyst formed from: [A] a compound of a transition metal belonging to Group IV B of the periodic table. [B] an aluminoxane, and [C] water.
Claim 2
Dependent Claim
28 words
An olefin polymerization catalyst formed from: [A] a compound of a transition metal belonging to Group IV B of the periodic table. [B] an aluminoxane, and [C] water.
Claim 3
Dependent Claim
13 words
A catalyst according to claim 1 formed also from: [D] an organoaluminum compound.
Claim 4
Dependent Claim
25 words
A catalyst according to claim 1 or 2 wherein [A] is a zirconium compound containing a group having a conjugated π electron as a ligand.
Claim 5
Dependent Claim
58 words
A catalyst according to claim 1 or 2 wherein [A] is a zirconium compound containing as a ligand a monodendate ligand selected from a cyclopentadienyl group and an alkyl-substituted cyclopentadienyl group or a multidendate ligand in which at least two indenyl or substituted idenyl groups or partial hydrides thereof are bonded to each other via an alkylene group.
Claim 6
Dependent Claim
30 words
A catalyst according to any one of the preceding claims wherein the molar ratio (Al/H₂O) of aluminum atom in the aluminoxane to water in the aluminoxane is 0.5/l to 50/l.
Claim 7
Dependent Claim
22 words
A catalyst according to any one of the preceding claims wherein [D] when present contains a hydrocarbon group other than n-alkyl group.
Claim 8
Dependent Claim
34 words
A process for the preparation of an olefin polymer which comprises homo polymerizing or copolymerizing at least one olefin in the presence of a catalyst as claimed in any one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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