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Spherical composite catalyst for olefin coordination polymerization, preparation method and application thereof

A technology of composite catalyst and coordination polymerization, which is applied in the preparation of spherical nanocomposites of polyolefin and clay, spherical composite catalysts for olefin coordination polymerization and their preparation, and can solve problems such as the inability to prepare spherical composite catalysts

Inactive Publication Date: 2011-12-21
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for Ziegler-Natta / clay composite catalysts, spherical composite catalysts cannot be obtained at present

Method used

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  • Spherical composite catalyst for olefin coordination polymerization, preparation method and application thereof
  • Spherical composite catalyst for olefin coordination polymerization, preparation method and application thereof
  • Spherical composite catalyst for olefin coordination polymerization, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The preparation of the hydrochloric acid ethanol mixed solution of 1-hexadecyl-3-bromoimidazolium salt: take by weighing 5 grams of 1-hexadecyl-3-bromoimidazolium salt, add the mixed solution of 11 milliliters of hydrochloric acid ethanol (by mass Concentrated hydrochloric acid with a concentration of 36% and ethanol at a volume ratio of 1:9 was prepared), stirred at 50° C. for 1 hour and set aside.

[0055] Preparation of organically modified clay: 50 grams of sodium-montmorillonite was added to 500 milliliters of distilled water, stirred at 30 ° C for 20 hours, and then the hydrochloric acid ethanol of the above-mentioned 1-hexadecyl-3-bromoimidazolium salt was mixed Add the solution to the above-mentioned sodium-montmorillonite aqueous dispersion; stir vigorously for 24 hours, filter with suction, and wash the filtrate repeatedly with a mixture of ethanol and water (volume ratio: 1:1) until AgNO 3 Check that there is no precipitate in the filtrate. The filtrate was ...

Embodiment 2

[0060] The preparation of the hydrochloric acid ethanol mixed solution of 1-hexadecyl-3-iodoimidazolium salt: take by weighing the 1-hexadecyl-3-iodoimidazolium salt of 50.0 grams, add the mixed solution of 13 milliliters of hydrochloric acid ethanol (according to Concentrated hydrochloric acid with a mass concentration of 36% and ethanol at a volume ratio of 1:9 was prepared), stirred at 50° C. for 1 hour and set aside.

[0061] Preparation of organically modified clay: Stir 5 grams of K-montmorillonite in 500 milliliters of distilled water at 60°C for 20 hours, then add the above-mentioned 1-hexadecyl-3-iodoimidazolium hydrochloric acid ethanol mixed solution to the above In the aqueous dispersion of K-montmorillonite; stir vigorously for 24 hours, filter with suction, and wash the filtrate repeatedly with a mixture of ethanol and water (volume ratio: 1:1) until AgNO 3 Check that there is no precipitate in the filtrate. Then vacuum dry at 100°C for 2 hours, grind the dried ...

Embodiment 3

[0066] Preparation of the hydrochloric acid ethanol mixed solution of 1-hexadecyl-3-chloroimidazolium salt: take 5 grams of 1-hexadecyl-3-chloroimidazolium salt, add 13 milliliters of hydrochloric acid ethanol mixed solution (according to Concentrated hydrochloric acid with a mass concentration of 36% and ethanol at a volume ratio of 1:9 was prepared), stirred at 50° C. for 1 hour and set aside.

[0067] Preparation of organically modified clay: 5 grams of sodium-montmorillonite was stirred in 500 milliliters of distilled water at 60° C. for 20 hours, and then the hydrochloric acid ethanol mixed solution of the above-mentioned 1-hexadecyl-3-chloroimidazolium salt was added to the above-mentioned Sodium-montmorillonite aqueous dispersion; stir vigorously for 24 hours, filter with suction, and wash the filtrate repeatedly with a mixture of ethanol and water (volume ratio: 1:1) until AgNO 3 Check that there is no precipitate in the filtrate. Then vacuum-dry at 100°C for 2 hours,...

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Abstract

The invention relates to a spherical composite catalyst for olefin coordination polymerization, a preparation method and application thereof. The content of metal titanium in the spherical composite catalyst is 0.005-0.06 parts by weight, the content of organically modified clay is 1-11 parts by weight, the content of solid paraffin is 0.1-10 parts by weight, and the content of magnesium halide is 0.05-1.5 parts by weight The content of the acid anhydride is 0 to 1.5 parts by weight, and the content of the ester compound is 0 to 1 part by weight; based on the weight part of the clay in the organically modified clay. The spherical composite catalyst for olefin coordination polymerization of the present invention can be used to prepare spherical nanocomposites of exfoliated polyolefin and clay with a particle size of 0.1 to 10 mm; wherein, the spherical nanocomposites of exfoliated polypropylene and clay The isotacticity is 90% to 99%, and the melting point is 160 to 165°C; the melting point of the exfoliated polyethylene and clay spherical nanocomposite is 135 to 140°C.

Description

technical field [0001] The invention belongs to the field of catalysts for olefin coordination polymerization, and in particular relates to a spherical composite catalyst for olefin coordination polymerization, a preparation method thereof, and an application of the catalyst in preparing spherical nanocomposite materials of polyolefin and clay. Background technique [0002] The nanocomposite of exfoliated polyolefin and clay is a nanocomposite material with ideal structure. In the nanocomposite material of this structure, since the clay sheets are uniformly distributed in the polyolefin matrix with nanometer size, through the clay nanosheets Small size effect, surface and interface effect and quantum effect, under very little filler (generally less than 5wt%) not only improve the physical and mechanical properties and thermal properties of polyolefin materials, but also improve the gas barrier properties of polyolefin products Flame retardant properties, etc., thereby broade...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/649C08F10/02C08F10/06
Inventor 贺爱华刘昕韩志超杜凯
Owner INST OF CHEM CHINESE ACAD OF SCI
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