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Catalyst component for olefin polymerization, preparation method and application thereof

A technology for olefin polymerization and catalysts, which is applied in the field of catalyst components and catalysts, and can solve problems such as difficult to control the forming steps, difficult to control the shape of catalyst particles, and difficult to obtain

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

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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, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Take 30ml of hexane, 3.15ml of dibutylmagnesium hexane solution (1M) and 1.0ml of isooctyl alcohol in turn, raise the temperature to 50°C and keep stirring for half an hour to obtain a transparent solution, then add polybutadiene block polyethylene oxide Alkanes copolymer (polybutadiene content 75wt%) hexane solution (10g / L) 2ml, be cooled to-10 ℃, add 0.36 milliliters of silicon tetrachlorides and 0.35ml titanium tetrachlorides successively, after adding material, 10 The temperature was raised rapidly to 50° C. within minutes, and the reaction was maintained for 2 hours. The temperature of the catalyst suspension was lowered to room temperature, allowed to stand, settled, washed three times with hexane, each time the amount of hexane was 50 milliliters, and after the washing was completed, it was dried to obtain a brown solid fluid powder with an average particle size of 37.4 microns.

[0048] Elemental analysis (ICP): Ti: 10.06% by weight, Mg: 19.29% by weight.

[00...

Embodiment 2

[0052] During the preparation of the catalyst, the temperature was rapidly raised to 50° C. within 10 minutes, and then the temperature was programmed to rise to 50° C. within 120 minutes. Other conditions were the same as in Example 1, and the average particle size was 43.7 microns.

[0053] Elemental analysis (ICP): Ti: 6.24% by weight, Mg: 13.55% by weight.

[0054] The ethylene slurry polymerization evaluation conditions of the catalyst are the same as in Example 1, and the polymerization results are shown in Table 1.

Embodiment 3

[0056] Change 1.0ml isooctyl alcohol in the catalyst preparation process into 0.6ml n-butanol, change polybutadiene block polyethylene oxide copolymer (polybutadiene content 75wt%) hexane solution (10g / L) 2ml into Be polybutadiene block polyethylene oxide copolymer (polybutadiene content 75wt%) hexane solution (10g / L) 10ml, other conditions are with embodiment 1, and its average particle diameter is 18.7 microns.

[0057] Elemental analysis (ICP): Ti: 11.54% by weight, Mg: 23.69% by weight.

[0058] The ethylene slurry polymerization evaluation conditions of the catalyst are 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 an application thereof. The catalyst component is a reaction product, which contains at least an organic magnesium compound, at least a liquid titanium-containing compound, at least a hydroxyl-containing compound, at least a chlorine-containing silicone compound, and at least a modified additive, wherein the modified additive is a polybutadiene-polyethylene oxide block copolymer. The prepared catalyst has good hydrogen regulation performance, and good particle morphology and distribution, such that the catalyst is easily used on the gas phase, the slurry, and other polymerization process devices.

Description

technical field [0001] The present invention relates to a catalyst component for olefin polymerization or copolymerization and its catalyst, as well as the preparation method and application of the catalyst component. technical background [0002] In the past 20 years, with the development of olefin polymerization technology, the catalysts matching the polymerization process have also made great 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 Mg-Ti high-efficiency catalyst has also 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 chemical raw materials such as organometallic magnesium compounds, chlorinating agents a...

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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