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Catalyst composition and method for olefin polymerization and olefin and alpha-loefin copolymerization by using mew-type loaded catalyst system

A technology of olefin polymerization and catalyst, applied in the field of novel supported polymerization catalyst composition, which can solve problems affecting product performance such as optical performance or processability

Inactive Publication Date: 2007-01-24
SAUDI BASIC IND CORP SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, using silica or magnesium chloride as a carrier will cause most of the carrier to remain in the product, which will affect the performance of the product such as optical properties or processability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Synthetic Catalyst A

[0047] Into a three-neck round bottom flask equipped with a condenser and a magnetic stirrer was placed 10.0 g of polyvinyl chloride spheres with an average particle size of 36 µm. The flask filled with polyvinyl chloride was heated to 70°C with an oil bath, and then evacuated under a pressure of 30 mmHg for 30 minutes. The flask and contents were then purged with dry nitrogen, and the polyvinyl chloride was 3 Isopentane was made into a slurry. 1.5cm 3 Butylmagnesium chloride (Aldrich, 2.0M in diethyl ether) was added to the slurry, and the resulting mixture was stirred at 35°C oil bath temperature for 60 minutes under reflux. The isopentane was then evaporated at 35°C with a nitrogen purge to give a free flowing powder.

[0048] Magnesium-modified polyvinyl chloride was then coated with a 30cm 3 Isopentane to make a slurry, the 2cm 3 Tetraethoxytitanium (Alfa Aesar, 1.0 M in hexane) was added to the slurry, and the resulting mixture was sti...

Embodiment 2

[0050] Ethylene polymerization

[0051] The autoclave with a volume of 3 L was purged with nitrogen for 30 minutes at 130°C. After the autoclave was cooled to 85° C., the reactor was purged with hydrogen, and then 1.5 L of n-hexane was introduced into the reactor. The reactor was pressurized to 3 barg hydrogen pressure. 2.0cm 3 Triethylaluminum TEAL (Aldrich, 1.0 M in hexane) was injected into the reactor. The reactor pressure L was raised to 15 barg by introducing ethylene into the reactor. Then will have been at 20cm 3 0.1 g of the solid catalyst "A" described in Example 1 slurried in n-hexane solvent was injected. Polymerization was carried out for 1 hour, supplying ethylene as needed to maintain a total reactor pressure of 15 barg. 510g polyethylene was recovered, and the bulk density of the resin was 0.303g / cm 3 , The catalyst productivity is 5100gPE / g catalyst. Gel permeation chromatography analysis of the product resin indicated a weight average molecular weight...

Embodiment 3

[0060] Ethylene polymerization

[0061] The autoclave with a volume of 3 L was purged with nitrogen for 30 minutes at 130°C. After the autoclave was cooled to 85° C., the reactor was purged with hydrogen, and then 1.5 L of n-hexane was introduced into the reactor. The reactor was pressurized to 3 barg hydrogen pressure. Then set 1.0cm 3 Modified methylalumoxane MMAO solution (Akzo-Nobel, 7% (weight) Al in heptane) with 1.0cm 3 A mixture of triethylaluminum TEAL (Aldrich, 1.0 M in hexane) was injected into the reactor. The reactor pressure was raised to 15 barg by introducing ethylene into the reactor. Then will have been at 20cm 3 0.05 g of the solid catalyst "A" described in Example 1 slurried in n-hexane solvent was injected. Polymerization was carried out for 1 hour, supplying ethylene as needed to maintain a total reactor pressure of 15 barg. 400g polyethylene was recovered, and the bulk density of the resin was 0.310g / cm 3 , The catalyst productivity is 8000gPE / g ...

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Abstract

The present invention relates to a catalyst composition for polymerization of olefins and copolymerization of olefins with alpha-olefins comprising (a) catalyst precursor comprising at least one Ziegler-Natta compound, at least one metallocene compound, at least one titanate compound and / or at least one alcohol compound, a magnesium compound and a polymeric material, and (b) a cocatalyst comprising of an alkylaluminum compound, aluminoxane compound or mixtures thereof; and to a process for polymerization of olefins and copolymerization of olefins with alpha olefins using a catalyst composition according to the present invention.

Description

technical field [0001] The present invention relates to novel supported polymerization catalyst compositions and processes for the polymerization of olefins and the copolymerization of olefins and alpha-olefins using the same. The catalyst composition exhibits high catalytic yield and excellent polymerization kinetics, and the product polyolefin homopolymer and copolymer have very low fine powder content, uniform spherical particles, high bulk density, good thermal stability and Excellent optical and mechanical properties. Background technique [0002] Several disclosed technologies are relevant to this application. These references describe the state of the art to which this invention pertains and are incorporated by reference. [0003] Despite the progress that has been made in the field of these Ziegler-Natta and metallocene catalysts, as those skilled in the art are aware, certain limitations remain in the now developed art of these catalysts. Traditionally, the activ...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/645C08F4/634C08F4/639C08F4/6392C08F4/659C08F4/6592C08F10/02C08F110/02C08F210/16
CPCC08F110/02C08F4/65912C08F210/16C08F4/65916C08F10/02C08F4/6592C08F4/6345C08F4/65904C08F2500/18C08F2500/24
Inventor A·默曼O·哈迈德A·阿布-拉克伯罕K·阿尔-巴哈利
Owner SAUDI BASIC IND CORP SA
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