Catalyst component for olefin polymerization and its preparation method and catalyst and application for olefin polymerization

An olefin polymerization and catalyst technology, which is applied in the field of catalyst components, can solve the problems of easy cracking of polymers, limited popularization and application, etc., and achieves the effect of reducing the phenomenon of fragmentation, improving the situation of cracking, and improving the appearance.

Active Publication Date: 2018-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst prepared by the carrier obtained by this method and the obtained polymer are prone to cracking, and this defect limits the further application of this method

Method used

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  • Catalyst component for olefin polymerization and its preparation method and catalyst and application for olefin polymerization
  • Catalyst component for olefin polymerization and its preparation method and catalyst and application for olefin polymerization
  • Catalyst component for olefin polymerization and its preparation method and catalyst and application for olefin polymerization

Examples

Experimental program
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preparation example Construction

[0073] The present invention also provides the above-mentioned preparation method for the catalyst component of olefin polymerization, and this method comprises the following steps:

[0074](1) Carrying out the first contact reaction between the oxirane compound shown in formula (2) and the titanium compound, the conditions of the first contact reaction include: the reaction temperature is from -30°C to 50°C, and the reaction time is 2-30min;

[0075] (2) carry out the second contact reaction with the product obtained by the magnesium compound shown in formula (1) and step (1), and before, during and during the second contact reaction of the product obtained by the magnesium compound and step (1) After adding the internal electron donor for one or more time periods,

[0076] (R 1 O) m MgT n Formula 1), Formula (2),

[0077] Among them, T is

[0078] R 1 for C 1 -C 12 straight-chain or branched-chain alkyl; R 2 and R 3 same or different, each independently hydrog...

preparation example 1

[0132] This preparation example is used to illustrate the catalyst solid component for olefin polymerization provided by the present invention and its preparation method.

[0133] (1) In a 1.6L reactor, add 200mL No. 5 white oil (Sigma-Aldrich Company), 8.0g (0.084mol) anhydrous magnesium chloride, 6g surfactant span80 (Sigma-Aldrich Company), 100mL (1.70 mol) ethanol, under stirring, the temperature was raised to 90°C. After reacting at constant temperature for 1 hour, the resulting mixture was stirred and dispersed for 30 minutes for emulsification. And add 25mL (0.32mol) epichlorohydrin in the obtained emulsification product, maintain temperature reaction 0.5 hour, carry out pressure filtration then, filter off liquid, wash 5 times with hexane, vacuum-dry, obtain magnesium compound A1, through infrared spectrum Law and 1 H-NMR method is measured, and magnesium compound A1 structural formula is represented by following formula (7), (R 1 is ethyl, R 2 for hydrogen, R 3 i...

preparation example 2

[0141] This preparation example is used to illustrate the catalyst component for olefin polymerization provided by the present invention and its preparation method.

[0142] The catalyst component was prepared according to the method of Preparation Example 1, except that in step (2), the amount of epichlorohydrin added was 1.0 mL (12.8 mmol) to obtain catalyst component C2.

[0143] The morphology of spherical catalyst component C2 particles observed by optical microscope is as follows: figure 2 shown. It can be seen from the figure that the particle shape of the olefin polymerization catalyst component C2 is relatively regular, the surface is smooth, basically spherical, the particle size distribution is relatively concentrated, and there are basically no abnormal particles.

[0144] It has been determined that the particle size distribution diagram of the spherical catalyst component C2 has only one peak, indicating that the catalyst component C2 is basically not broken. ...

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Abstract

The present invention discloses a catalyst component used for olefin polymerization and a preparation method thereof and a catalyst used for olefin polymerization and application. The catalyst component comprises the following reaction products: 1, a magnesium compound shown as a formula (1); 2, at least one titanium compound; 3, at least one internal electron donor and 4, an oxirane compound shown as a formula (2), the dosage of the oxirane compound shown as the formula (2) is 0.03-0.5 mole, wherein one mole of magnesium element in the magnesium compound shown as the formula (1) is taken as a reference. Cracking phenomena of the catalyst component used for olefin polymerization and an olefin polymer can be improved greatly, phenomena of broken catalyst and olefin polymer can be effectively reduced, morphology of the catalyst and olefin polymer can be improved, and the bulk density of the olefin polymer can be improved.

Description

technical field [0001] The present invention relates to a catalyst component for olefin polymerization, a method for preparing the catalyst component, a catalyst component for olefin polymerization prepared by the method, a catalyst for olefin polymerization comprising the catalyst component, and The application of the catalyst for olefin polymerization in olefin polymerization reaction. Background technique [0002] It is well known that the performance of Ziegler-Natta catalysts supported by magnesium chloride is significantly better than catalysts supported by other supports when used in propylene polymerization. Therefore, most catalysts for olefin polymerization are supported by titanium halide on activated magnesium chloride. At present, activated magnesium chloride is generally anhydrous MgCl 2 It reacts with alcohol at high temperature to form alcoholate and then it can be obtained by dealcoholization. In order to obtain spherical alcoholate, it can be prepared by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/645C08F4/651C08F10/06
Inventor 凌永泰夏先知刘月祥李威莅赵瑾张纪贵高富堂谭扬彭人琪高平张天一张志会
Owner CHINA PETROLEUM & CHEM CORP
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