EP0472741A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Olefin polymerization catalyst

Assignee: Tonen General Sekiyu KK

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Filing: 1991-03-13

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Granted: —

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Expires: 2011-03-13

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Abstract

Abstract A polymerization catalyst for olefins including styrenic compounds, containing as one component a transition metal compound having two ligands such as a β-diketone, which comprises: (a) a transition metal compound of general formula (I), wherein M represents titanium, zirconium, hafnium or vanadium; Y¹ and Y² represent the same or different halogen atoms or C₁ to C₁₀ alkyl groups; and R¹, R² and R³ represent each hydrogen or a C₁ to C₁₀ hydrocarbon group, provided that at least one of them is hydrogen but not all of them are hydrogen at the same time, and (b) an organoaluminum compound, particularly aluminoxane.

Inventors

👤 Satoshi Corporate Res. & Dev. Laboratory Ueki
👤 Hiroyuki Corporate Res. & Dev. Lab. Furuhashi
👤 Masahide Corporate Res. & Dev. Laboratory Murata
👤 Shigeyuki Corporate Res. & Dev. Laboratory Toki

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-30 20:30

CPC Classifications

C; C08; C08F; C08F10/00; C08F12/00; C08F12/02; C08F12/04

Claims Analysis

Total Claims: 2

Claim 1

Independent Claim 83 words

An olefin polymerization catalyst comprising: (a) a transition metal compound represented by the general formula, wherein M represents titanium, zirconium, hafnium or vanadium, Y¹ and Y² each represent, same or different, halogen atoms or alkyl groups containing 1 to 10 carbon atoms and R¹, R² and R³ each represent hydrogen atoms or hydrocarbon groups containing 1 to 10 carbon atoms, at least one of which is a hydrogen atom but all of which must not be hydrogen atoms, and (b) an organoaluminum compound.

Claim 2

Dependent Claim 84 words

A styrene compound polymerization catalyst comprising: (a) a transition metal compound represented by the general formula, wherein M represents titanium, zirconium, hafnium or vanadium, Y¹ and Y² each represent, same or different, halogen atoms or alkyl groups containing 1 to 10 carbon atoms and R¹, R² and R³ each represent hydrogen atoms or hydrocarbon groups containing 1 to 10 carbon atoms, at least one of which is a hydrogen atom but all of which must not be hydrogen atoms, and (b) an aluminoxane compound.

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