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Magnesium Compound, Solid Catalyst Component, Olefin Polymerization Catalyst, and Method for Producing Olefin Polymer

a technology of olefin polymer and solid catalyst, which is applied in the direction of catalyst activation/preparation, halide preparation methods, chemical/physical processes, etc., can solve the problems of poor poor performance stability of catalyst, and difficult to obtain polymer powder form, etc., to achieve excellent morphology of polymer powder, high activity, and high stereoregularity

Inactive Publication Date: 2007-09-20
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033] The invention provides a magnesium compound, solid catalyst component and catalyst for olefin polymerization that exhibits high activity and can give an olefin polymer excellent in morphology of the polymer powder with a high stereoregularity.

Problems solved by technology

For example, for improving an obtained polymer in morphology including particle size, form, etc. there are known a method in which a magnesium compound is supported on an inorganic oxide such as silica (JP-A-S63-280707) and a method in which a magnesium compound once dissolved in a solvent such as an alcohol is precipitated again and the precipitate is used (JP-A-S56-000811) However these methods include very complicated steps, since they require the procedures of supporting, dissolving and precipitating a magnesium compound.
Further, these methods have a defect in that the catalyst is poor in performance stability.
However, it has a problem in the point that the size and form of the polymer powder particle obtained depends on the conditions.
For example, it does not permit omission of a pelletizing step and may not enable a copolymer of ethylene to be produced with sufficiently high efficiency.

Method used

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  • Magnesium Compound, Solid Catalyst Component, Olefin Polymerization Catalyst, and Method for Producing Olefin Polymer
  • Magnesium Compound, Solid Catalyst Component, Olefin Polymerization Catalyst, and Method for Producing Olefin Polymer
  • Magnesium Compound, Solid Catalyst Component, Olefin Polymerization Catalyst, and Method for Producing Olefin Polymer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0138] (1) Preparation of magnesium compound

[0139] A three-necked flask having an internal volume of 0.5 liter and having a stirrer was flushed with nitrogen, and 232 ml (3.95 mole) of dehydrated ethanol (EtOH), 1.9 g (15 mmole) of manganese dichloride, 1.20 g (9.5 milligram atom) of iodine and 12.0 g (0.49 milligram atom) of metal magnesium were poured into the three-necked flask and allowed to react at a reflux temperature (78° C.) with stirring (350 rpm) until no more hydrogen was generated from the system, to give a magnesium compound. It was presumed from the composition analysis and XRD analysis that this magnesium compound was substantially made of diethoxy magnesium and solid in the state where the manganese dichloride poured was absorbed on the surface of plate-like crystal aggregate of diethoxy magnesium. The average particle diameter (D50), sphericity (Sp) and smoothness (Sm) of the magnesium compound thus obtained were measured. The results are shown in Table

[0140] (2)...

example 2

[0144] (1) Preparation of Magnesium Compound

[0145] Example 1 (1) was repeated except that the iodine was replaced with 0.45 g (9.5 milligram atom) of anhydrous magnesium chloride. Table 1 shows the results.

[0146] (2) Preparation of Solid Catalyst Component

[0147] Example 1 (2) was repeated except that the magnesium compound prepared in the above (1) was used.

[0148] (3) Propylene Polymerization

[0149] Example 1 (3) was repeated except that the solid catalyst component obtained in the above (2) was used. Table 1 shows the results.

example 3

[0150] (1) Preparation of Magnesium Compound

[0151] Example 1 (1) was repeated except that the amount of manganese dichloride was changed to 3.1 g (25 mmole). Table 1 shows the results.

[0152] (2) Preparation of Solid Catalyst Component

[0153] Example 1 (2) was repeated except that the magnesium compound prepared in the above (1) was used.

[0154] (3) Propylene Polymerization

[0155] Example 1 (3) was repeated except that the solid catalyst component obtained in the above (2) was used. Table 1 shows the results.

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Abstract

A magnesium compound obtained by reacting the following components (i) (ii) and (iii): (i) metal magnesium (ii) an alcohol (iii) a metal dihalide compound represented by the general formula (I) containing at least 0.001 mole of M relative to one mole of magnesium of the metal magnesium (i) MX2  (I) where X is a halogen atom and M is Mn, Fe, Co or Zn.

Description

TECHNICAL FIELD [0001] The invention relates to a magnesium compound which is useful for homopolymerization or copolymerizatlon of ethylene and an α-olefin, a solid catalyst component, a catalyst for olefin polymerization and a method of producing an olefin polymer. TECHNICAL BACKGROUND [0002] Hitherto magnesium chloride and magnesium alkoxides have been widely used as a support material without being milled in the field of catalysts for olefin polymerization specifically the homopolymerization or copolymerization of ethylene, propylene or the like. This may improve the catalyst activity and the morphology of polymer powder. [0003] For example, for improving an obtained polymer in morphology including particle size, form, etc. there are known a method in which a magnesium compound is supported on an inorganic oxide such as silica (JP-A-S63-280707) and a method in which a magnesium compound once dissolved in a solvent such as an alcohol is precipitated again and the precipitate is us...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08F4/02C07C31/28C08F4/658C08F10/00
CPCC07F3/003C08F10/00C08F10/06C08F110/06C08F4/6148C08F4/6145C08F4/6574C08F4/6578C08F4/70C08F4/6588C08F4/6565C08F2500/15C08F2500/17C08F2500/24
Inventor TANASE, SHOJIROYABUNOUCHI, NOBUHIROKONAKAZAWA, TAKEHITOSADASHIMA, TAKANORIKATAYAMA, KIYOKAZU
Owner IDEMITSU KOSAN CO LTD
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