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Olefin polymerization nanometer composite material

A technology of nanocomposite materials and composite materials, applied in the field of polyolefin nanocomposite materials

Inactive Publication Date: 2004-03-17
HANWHA TOTAL PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hydrophilic nature of layered silicate clay minerals, polymerization by means of Ziegler-Natta catalytic mechanism or metallocene catalysts cannot be achieved in the presence of this mineral

Method used

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  • Olefin polymerization nanometer composite material
  • Olefin polymerization nanometer composite material
  • Olefin polymerization nanometer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070]

[0071] 20 g of sodium montmorillonite (Cloisite, not chemically modified; Southern Clay Products, Inc., Texas) was added to a dry 250 ml flask equipped with a magnetic stir bar and heated under vacuum at 400°C for 6 hours. After cooling the reaction to room temperature, 1.0 g of SAN[poly(styrene-co-acrylonitrile)] (HF-9690, acrylonitrile content: 23 wt%, weight average molecular weight: 90,000; Cheil Industries, Inc. .) and 100 ml of toluene (distilled in the presence of sodium-benzophenone). The reaction mixture was stirred at room temperature for 2 hours to completely dissolve the SAN polymer, and then toluene was removed therefrom, followed by vacuum drying to obtain a light gray powder. Subsequently, 100 ml of toluene containing 2 mmol of MAO (methylaluminoxane) was added to the powder at room temperature. The resulting slurry was stirred at room temperature for 30 minutes, and then toluene was removed therefrom, followed by vacuum drying to obtain a montmorill...

Embodiment 2

[0080] Example 2 was carried out in the same manner as in Example 1 above, except that the amount of the cocatalyst (methylaluminoxane) was reduced for the preparation of the montmorillonite-derived catalyst support.

[0081] The molar ratio of [MAO] / [Zr] is 3,000, the activity of the composite is 20.8 kg / mmol-Zr-hr, and the mineral content of montmorillonite is 6.0 wt%.

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Abstract

Disclosed herein is a polyolefin nanocomposite prepared by polymerizing an olefin monomer in a catalyst system comprising (1) a supported catalyst consisting of a polymer, a silicate clay mineral, and a transition metal compound, and cocatalyst, an alkyl aluminoxane.

Description

technical field [0001] The present invention relates to a polyolefin nanocomposite material, more specifically, to a polyolefin nanocomposite material prepared by polymerization of olefin monomers in a catalyst system. The catalyst system contains: (1) a carrier catalyst, composed of a compound, a silicate clay mineral and a transition metal compound, and (2) a cocatalyst, an alkylaluminoxane. Background technique [0002] Inorganic raw materials, such as talc, mica, etc., are usually used as inorganic fillers to improve the mechanical properties of polyolefin resins. Usually such inorganic materials are mechanically incorporated into polyolefin resins. However, mechanical incorporation often results in the formation of poor dispersions in which the particles of the inorganic raw material form multilayer aggregates due to the incompatibility of the inorganic raw material with the polyolefin masterbatch. [0003] To date, various attempts have been made to disperse inorgani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/656C08F4/659C08F4/6592C08F10/00C08F110/06C08F210/00
CPCC08F10/00Y10S526/943C08F4/65927C08F4/65912C08F110/06Y10S526/904C08F4/027C08F4/65916C08F4/02B82B3/00C08F210/00
Inventor 李润焕丁源凡高永洙鲁基洙
Owner HANWHA TOTAL PETROCHEMICAL CO LTD