Back to results
US 2014/0378620 A1Published application
Catalyst composition for polymerizing conjugated diene monomer
AssigneeAsahi Kasei Chemicals Corporation
InventorsKatsuhiro Iwase, Yuji Kosugi
Life of this patent
Estimating the term…
Abstract
There is provided a catalyst composition for polymerizing a conjugated diene monomer containing a rare earth complex having a specific structure and a specific compound.
Claims18
A catalyst composition, comprising components (a) and (b), wherein
- the component (a) is a lanthanoid-aluminum crosslinked complex having a structure represented by the following formula (1) or (2):
- wherein Ln represents one selected from the group consisting of lanthanoid elements, Sc, and Y;
- and R1 to R4 may be the same or different, and represent one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an alkylsilyl group, an alkyloxy group, and a dialkylamide group;
- and
- the component (b) is an alkylaluminum compound represented by a formula HnAlR103-n
- wherein R10 may be the same or different, and represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 1 to 8 carbon atoms;
- and n represents an integer of 0 to 3.
4 more elements
A catalyst composition, comprising components (a), (c), and (d), wherein
- the component (a) is a lanthanoid-aluminum crosslinked complex having a structure represented by the following formula (1) or (2):
- wherein Ln represents one selected from the group consisting of lanthanoid elements, Sc, and Y;
- and R1 to R4 may be the same or different, and represent one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an alkylsilyl group, an alkyloxy group, and a dialkylamide group,
- the component (c) is one or more compounds selected from the group consisting of metal halide compounds and halosilyl compounds, and
- the component (d) is one or more compounds selected from the group consisting of aluminum oxy compounds represented by the following formula (3) or (4):
- wherein R13 to R19 may be the same or different, and represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms;
- and x and y represent an integer of 1 to 10000,
- and/or borane compounds and borate compounds.
5 more elements
Dependencies are inferred from the claim text.