Catalyst component for olefin polymerization and preparation method and catalyst thereof

A technology for olefin polymerization and catalyst, which is applied to the catalyst component of olefin polymerization and the preparation method thereof and the field of catalyst, can solve the problems of complex forming steps, affecting the shape of catalyst particles, difficult to control the forming steps, etc., and achieves good hydrogen regulation performance, good Effect of particle morphology and distribution

Active Publication Date: 2018-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patents CN158136, CN1795213 and U.S. patents US4508843, US4921920 and US5124296 disclose the use of organometallic magnesium compounds, chlorinating agents and transition metal titanium compounds to prepare a variety of different types of catalysts. In the process of preparing catalysts in these patents, all There is a problem of difficulty in controlling the shaping step, which in turn affects the morphology of the catalyst particles
Recent studies have found that in the dispersion system of the catalyst precursor containing magnesium/titanium c

Method used

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  • Catalyst component for olefin polymerization and preparation method and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1

[0047] Take 30ml of hexane, 3.15ml of dibutylmagnesium hexane solution (1M) and 1.0ml of isooctanol in turn, heat up to 50°C and maintain stirring for half an hour to obtain a transparent solution, then add polybutadiene polymethacrylic acid Methyl ester diblock copolymer (polybutadiene content 33%) hexane solution (10g / L) 2ml, cooled to -50 ℃, 1.6ml dichloroethylaluminum hexane solution (2M) and 0.35 ml of titanium tetrachloride, after maintaining the low temperature for half an hour, the temperature is naturally raised slowly, and after rising to room temperature, the heating is maintained at 50 °C for 2 hours. The temperature of the catalyst suspension was lowered to room temperature, allowed to stand, settled, washed three times with hexane, and the amount of hexane was 50 ml each time.

[0048] Elemental analysis (ICP): Ti: 12.83% by weight, Mg: 15.14% by weight.

[0049] Ethylene polymerization evaluation: 1L of hexane, 1mmol of triethylaluminum and ...

Example Embodiment

[0050] Example 2

[0051] 2ml of hexane solution (10g / L) of polybutadiene polymethyl methacrylate diblock copolymer added in the catalyst preparation process was changed to polybutadiene polymethyl methacrylate diblock copolymer added 4ml of hexane solution (10g / L), other conditions are the same as in Example 1, and the average particle size of the catalyst component is 16.2 microns.

[0052] Elemental analysis (ICP): Ti: 13.65% by weight, Mg: 15.77% by weight.

[0053] The conditions for evaluating the ethylene slurry polymerization of the catalyst are the same as those in Example 1, and the polymerization results are shown in Table 1.

Example Embodiment

[0054] Example 3

[0055] In the catalyst preparation process, the "naturally slow temperature rise, after rising to room temperature, heating and maintaining 50 ° C for 2 hours" was changed to 10 minutes to heat up to 50 ° C, heating and maintaining 50 ° C for 2 hours, other conditions were the same as in Example 1, the catalyst components The average particle size is 15.8 microns.

[0056] Elemental analysis (ICP): Ti: 9.56% by weight, Mg: 13.81% by weight.

[0057] The conditions for evaluating the ethylene slurry polymerization of the catalyst are the same as those in Example 1, and the polymerization results are shown in Table 1.

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Abstract

The invention provides a catalyst component for olefin polymerization and a preparation method and a catalyst thereof. The catalyst component contains a reaction product of at least one organic magnesium compound, at least one titanium-containing compound, at least one hydroxyl-containing compound, at least one fluorine-containing organic aluminum compound and at least one additive, wherein the additive is a polybutadiene block polymethyl methacrylate block polymer. The catalyst provided by the invention not only has a good hydrogen regulating property, but also has good particle shape and distribution, so that the catalyst is more favorably used in polymerization process devices such as gas phase and slurry.

Description

technical field [0001] The invention belongs to the field of catalysts for olefin polymerization, and relates to a catalyst component for olefin polymerization, a preparation method and a catalyst. Background technique [0002] Over the past 20 years, with the development of olefin polymerization technology, the catalysts supporting olefin polymerization have also made great progress. Among them, high-efficiency catalysts occupy an important position in the field of olefin polymerization due to their excellent catalytic performance and mature application technology. . After years of exploration and research, the preparation method of Mg-Ti high-efficiency catalysts has developed from co-grinding method and suspension impregnation method to chemical reaction method. Chinese patents CN158136, CN1795213 and U.S. patents US4508843, US4921920 and US5124296 disclose the use of organometallic magnesium compounds, chlorinating agents and transition metal titanium compounds to prepa...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/02C08F4/649C08F4/654C08F4/651
CPCC08F10/00C08F110/02C08F4/6494C08F4/6546C08F4/651C08F2500/12C08F2500/18
Inventor 王世波周俊领刘东兵张磊吕新平黄廷杰周歆张长礼邢宝泉
Owner CHINA PETROLEUM & CHEM CORP
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