Catalyst for production of vinyl-based polymer and process for production of vinyl-based aromatic polymer
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMizutomo Takeuchi, Hajime Shouzaki, Norio Tomotsu
Life of this patent
Estimating the term…
Abstract
A catalyst for the production of a vinyl polymer, which comprises: in combination, (A) a transition metal complex of the formula: ##STR1## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 -alkoxy, (B) an aluminoxane or ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid. Component (B) can be a combination of an aluminoxane and an ionic compound having a non-coordinating anion and a cation.
Claims15
A catalyst for the production of a vinyl aromatic polymer, which comprises:
- in combination, (A) a transition metal complex of the formula:
- ##STR5## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 or --SCH.sub.3, (B) an aluminoxane or ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid.
A catalyst for the production of a vinyl aromatic polymer, which comprises:
- in combination, (A) a transition metal complex of the formula:
- ##STR8## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 or --SCH.sub.3, (B) an aluminoxane and an ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid.
A process for the production of a vinyl aromatic polymer, which comprises:
- polymerizing a vinyl aromatic monomer in the presence of a catalyst which is a combination of (A) a transition metal complex of the formula:
- ##STR9## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 -alkoxy, (B) an aluminoxane or ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid.
A process for the production of a vinyl polymer, which comprises:
- polymerizing a vinyl aromatic monomer in the presence of a catalyst which is a combination of (A) a transition metal complex of the formula:
- ##STR10## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 -alkoxy, (B) an aluminoxane and an ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid.
Dependencies are inferred from the claim text.