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EP0516458A2
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EP
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Olefin polymerization solid catalyst, olefin polymerization catalyst and olefin polymerization
Assignee: Mitsui Chemicals Inc
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Filing: 1992-05-29
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Granted: —
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Expires: 2012-05-29
Abstract
Abstract The invention relates to a solid catalyst component (A-1) of a catalyst for use in the polymerization of at least one olefin and comprising (a-1) a particulate carrier composed of a specific oxide of a metal, and supported on the carrier, (a-2) an organoaluminum oxy compound and (a-3) a specific transition metal compound containing a specific ligand. The catalyst component can be used, optionally in conjunction with an organoaluminum compound, in the suspension polymerization or vapor phase polymerization of at least one olefin to provide spherical olefin polymers having excellent particle characteristics at high polymerization activity.
Inventors
- 👤 Toshiyuki c/o Mitsui Petroch. Ind. Ltd. Tsutsui
- 👤 Ken c/o Mitsui Petroch. Ind. Ltd. Yoshitsugu
- 👤 Kunio c/o Mitsui Petroch. Ind. Ltd. Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 13:39
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65904; C08F4/65912; C08F4/65916; C08F4/6592; Y; Y10; Y10S; Y10S526/00; Y10S526/904; Y10S526/941; Y10S526/943
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A solid component [A-1] of a catalyst for use in the polymerization of at least one olefin, which catalyst component comprises; (a-1) a particulate carrier which is (i) composed of an oxide of at least one element belonging to Group II, II or IV of the Periodic Table, (ii) contains less than 1.0% by weight of water and (iii) comprises at least 1.0% by weight of surface hydroxyl groups, and supported on said particulate carrier (a-1); (a-2) an organoaluminum oxy compound, and (a-3) at least one compound of a transition metal of Group IV B of the Periodic Table containing a ligand having a cyclopentadienyl skeleton.
Claim 2
Dependent Claim
16 words
A catalyst component according to claim 1 wherein (a-3) comprises at least two transition metal compounds.
Claim 3
Dependent Claim
24 words
A catalyst component according to claim 1 or 2, wherein (a-3) is a compound wherein the cyclopentadienyl skeleton is substituted by a hydrocarbon group.
Claim 4
Dependent Claim
28 words
A catalyst component according to claim 1, 2 or 3 which also comprises an olefin prepolymer formed by prepolymerizing an olefin in a suspension or a vapor phase.
Claim 5
Dependent Claim
29 words
An olefin polymerization catalyst which comprises a solid component [A-1] as claimed in any one of the preceding claims, and [C-2] a catalyst component which is an organoaluminum compound.
Claim 6
Dependent Claim
42 words
A process for preparing an olefin polymer which comprises polymerizing at least one olefin in the presence of a solid catalyst component [A-1] as claimed in any one of claims 1 to 4 or olefin polymerization catalyst as claimed in claim 5.
Claim 7
Dependent Claim
122 words
An olefin polymerization solid catalyst obtainable by prepolymerizing at least one olefin in the presence of; [A-2] a solid catalyst component comprising (a-1) a particulate carrier which is (i) composed of an oxide of at least one element belonging to Group II, III or IV of the Periodic Table, (ii) contains less than 1.0% by weight of water and (iii) comprises at least 1.0% by weight of surface hydroxyl groups, and supported on the particulate carrier (a-1); (a-2) an organoaluminum oxy compound [B] a catalyst component which is a compound of at least one transition metal belong to Group IVB of the Periodic Table containing a ligand having a cyclopentadienyl skeleton; and, optionally, [C-1] a catalyst component which is an organoaluminum compound.
Claim 8
Dependent Claim
15 words
A catalyst according to claim 7 wherein [B] comprises at least two transition metal compounds.
Claim 9
Dependent Claim
23 words
A catalyst according to claim 7 or 8 wherein [B] is a compound wherein the cyclopentadienyl skeleton is substituted by a hydrocarbon group.
Claim 10
Dependent Claim
21 words
A catalyst according to claim 7, 8 or 9 which also comprises [C-2] a catalyst component which is an organoaluminum compound.
Claim 11
Dependent Claim
30 words
A process for preparing an olefin polymer which comprises polymerizing at least one olefin in the presence of a catalyst as claimed in any one of claims 7 to 10.
References Cited (Backward Citations)
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