Catalyst for polymerizing aromatic vinyl compound and process for producing polymer of aromatic vinyl compound

Assignee: Tosoh Corp

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Filing: 1991-03-06

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Granted: —

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Expires: 2011-03-06

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Abstract

Abstract A catalyst for polymerizing an aromatic vinyl compound, comprising a transition metal compound as a catalyst component (A) represented by the general formula (1): where M is an element of Transition Group IV; X¹ and X² are respectively halogen; R¹, R², R³, R⁴, R⁵ and R⁶ are respectively hydrogen or an alkyl group of from 1 to 6 carbon atoms; and m is an integer of 1 to 6; and an aluminoxane as a catalyst component (B) represented by the general formula (2) or (3): where n is an integer of from 4 to 60; and R⁷ is an alkyl of from 1 to 6 carbon atoms, phenyl or benzyl, preferably methyl, and a process for producing a polymer of an aromatic vinyl compound, comprising polymerizing the aromatic vinyl compound in the presence of the catalyst.

Inventors

👤 Akira Miyashita

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-06 18:02

CPC Classifications

C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F4/00; C08F4/06; C08F4/08; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; Y; Y10; Y10S; Y10S526/00; Y10S526/943

Claims Analysis

Total Claims: 4

Claim 1

Independent Claim 110 words

A catalyst for polymerizing an aromatic vinyl compound, comprising a transition metal compound as a catalyst component (A) represented by the general formula (1): where M is an element of Transition Group IV; X¹ and X² are respectively halogen; R¹, R², R³, R⁴, R⁵ and R⁶ are respectively hydrogen or an alkyl group of from 1 to 6 carbon atoms; and m is an integer of 1 to 6; and an aluminoxane as a catalyst component (B) represented by the general formula (2) or (3): where n is an integer of from 4 to 60; and R⁷ is an alkyl of from 1 to 6 carbon atoms, phenyl or benzyl.

Claim 2

Dependent Claim 125 words

A process for producing a polymer of an aromatic vinyl compound, comprising polymerizing the aromatic vinyl compound in the presence of a catalyst comprising a transition metal compound as a catalyst component (A) represented by the general formula (1): where M is an element of Transition Group IV; X¹ and X² are respectively halogen; R¹, R², R³, R⁴, R⁵ and R⁶ are respectively hydrogen or an alkyl group of from 1 to 6 carbon atoms; and m is an integer of 1 to 6; and an aluminoxane as a catalyst component (B) represented by the general formula (2) or (3): where n is an integer of from 4 to 60; and R⁷ is an alkyl of from 1 to 6 carbon atoms, phenyl or benzyl.

Claim 3

Dependent Claim 21 words

A catalyst according to claim 1, wherein R⁷ in the general formula (2) or (3) of catalyst component (B) is methyl.

Claim 4

Dependent Claim 21 words

A process according to claim 2, wherein R⁷ in the general formula (2) or (3) of catalyst component (B) is methyl.

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