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Catalyst component for olefin polymerization, and preparation method thereof

An olefin polymerization and catalyst technology, applied in the field of catalyst components and catalysts, can solve the problems of difficult control, high material prices, and difficulty in controlling the shape of catalyst particles.

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this type of Mg-Ti catalyst, there is a fatal shortcoming that it is difficult to control the shaping step, so it is difficult to control the morphology of the prepared catalyst particles. In, add some emulsifier-like substances to form an emulsion, and then react and precipitate catalyst particles, which can improve the particle shape of the obtained catalyst, such as the perfluoropolyether used in Montedison’s EP0258089A, which is proposed in Chinese patent CN1537118A Until the use of perfluorooctane, the forming steps of these methods are complicated, difficult to control, and the shape of the obtained catalyst particles is not easy to control, and the materials used are expensive and difficult to obtain

Method used

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  • Catalyst component for olefin polymerization, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Take 30ml of hexane, 3.15ml of dibutylmagnesium hexane solution (1M) and 1.0ml of isooctyl alcohol in turn, heat up to 50℃ and keep stirring for half an hour to obtain a transparent solution, then add polybutadiene block polyethylene oxide Alkyl copolymer (polybutadiene content 75wt%) hexane solution (10g / L) 2ml, lower the temperature to -50°C, add 0.6ml of phosphorus trichloride and 0.35ml of titanium tetrachloride in turn, after the addition, The temperature was rapidly increased to 50°C within 10 minutes, and the reaction was maintained for 2 hours. The temperature of the catalyst suspension was lowered to room temperature, allowed to stand, settled, and washed with hexane three times. The amount of hexane used was 50 ml each time. After the washing was completed, it was dried to obtain a brown solid fluid powder with an average particle size of 15.7 microns.

[0046] Elemental analysis (ICP): Ti: 9.35% (weight), Mg: 13.14% (weight).

[0047] Ethylene polymerization eval...

Embodiment 2

[0050] Add 2ml of hexane solution (10g / L) of polybutadiene block polyethylene oxide copolymer (polybutadiene content 75% by weight) during the catalyst preparation process, instead of adding polybutadiene block polyethylene oxide copolymer (Polybutadiene content 75wt%) hexane solution (10g / L) 6ml, and at the same time change 0.6ml of phosphorus trichloride to 0.6ml of phosphorus oxychloride, other conditions are the same as in Example 1, the average particle size It is 7.56 microns.

[0051] Elemental analysis (ICP): Ti: 11.37% (weight), Mg: 13.24% (weight).

[0052] The evaluation conditions of the catalyst for ethylene slurry polymerization were the same as in Example 1, and the polymerization results are shown in Table 1.

Embodiment 3

[0054] Change the 1.0ml isooctyl alcohol in the catalyst preparation process to 3.0ml isooctyl alcohol, quickly raise the temperature to 50°C within 10 minutes, change it to naturally and slowly raise the temperature to room temperature, and then heat to 50°C. Other conditions are the same as in Example 1. Its average particle size is 14.6 microns.

[0055] Elemental analysis (ICP): Ti: 10.75% (weight), Mg: 14.18% (weight).

[0056] The evaluation conditions of the catalyst for ethylene slurry polymerization were the same as in Example 1, and the polymerization results are shown in Table 1.

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Abstract

The present invention provides a catalyst component for olefin polymerization, a preparation method and a use thereof. The catalyst component comprises a reaction product, which contains at least an organic magnesium compound, at least a compound containing titanium, at least a compound containing hydroxyl, at least an organic phosphorus compound containing chlorine and at least a modified additive, wherein the modified additive is a polybutadiene-polyethylene oxide block copolymer. The prepared catalyst has characteristics of good hydrogen regulation performance, and good particle morphologyand distribution, such that the catalyst is easily used on the gas phase, the slurry, and other polymerization process devices.

Description

Technical field [0001] The invention relates to a catalyst component used for olefin polymerization or copolymerization and a catalyst thereof, as well as a preparation method and application of the catalyst component. technical background [0002] In the past 20 years, with the development of olefin polymerization process, the catalyst supporting the polymerization process has also made considerable progress. Among them, high-efficiency catalysts still occupy an important role in the field of polyolefin catalysts due to their excellent polymerization performance and mature application technology. status. After years of exploration and research, the preparation method of the Mg-Ti series high-efficiency catalyst has also been developed from the co-grinding method and the suspension impregnation method to the chemical reaction method. In the chemical reaction method, many invention patents involve the use of organic metal magnesium compounds, chlorinating agents and transition me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/649C08F10/02C08F10/06C08F10/08C08F10/14
Inventor 王世波刘东兵周俊领吕新平毛炳权邢宝泉张长礼张磊王丽莎黄廷杰
Owner CHINA PETROLEUM & CHEM CORP
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