Production process of pre-polymerized polymerization catalyst component and addition polymer
AssigneeSumitomo Chemical Company, Limited
InventorTakuya Ogane
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Abstract
A production process of a pre-polymerized catalyst component, comprising steps of (i) contacting a transition metal compound defined by formula [1], an activation agent, an organometallic compound defined by formula [2], and an optional organoaluminum compound with one another, thereby forming a primary polymerization catalyst, and (ii) pre-polymerizing an olefin in the presence of the primary polymerization catalyst; and a process for producing an addition polymer, comprising a step of polymerizing an addition polymerizable monomer in the presence of a pre-polymerized catalyst component produced by the above production process, or in the presence of the pre-polymerized catalyst component and an organoaluminum compound.
Claims8
A process for producing a pre-polymerized catalyst component for addition polymerization, comprising steps of:
- (1) contacting a transition metal compound represented by following formula [1], or a μ-oxo type dimmer of the transition metal compound, an activation agent, an organometallic compound represented by following formula [2], and an optional organoaluminum compound with one another;
- thereby forming a primary polymerization catalyst;
- and
- (2) pre-polymerizing an olefin in the presence of the primary polymerization catalyst;
- L1aM1X1b [1]
- wherein M1 is a transition metal atom of group 4 in the periodic table;
- L1 is a cyclopentadiene-containing anionic group or a hetero atom-containing group, and when two L1s exsist, they may be linked to each other, directly or through a linking group containing a carbon, silicon, nitrogen, oxygen, sulfur or phosphorus atom;
- X1 is a halogen atom, a hydrocarbyloxy group, or a hydrocarbyl group other than the above cyclopentadiene-containing anionic group;
- a is a number satisfying 0<a≦3;
- and b is a number satisfying 0<b≦3;
- M2L2m [2]
- wherein M2 is a typical metal atom of group 1 or 2 in the periodic table;
- L2 is a hydrogen atom, a halogen atom, a hydrocarbyl group, or a hydrocarbyloxy group;
- and m is a valence of M2.
Dependencies are inferred from the claim text.