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Post-metallocene catalyst precursor, preparation method thereof, catalyst, application of catalyst, and ethylene homopolymerization method

A metallocene catalyst and catalyst technology are applied in the field of olefin coordination polymerization, which can solve the problems of complex catalyst preparation process and achieve the effects of low cost, good repeatability and high catalytic activity

Active Publication Date: 2019-09-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this catalyst is relatively complicated, and the yield is only about 70%

Method used

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  • Post-metallocene catalyst precursor, preparation method thereof, catalyst, application of catalyst, and ethylene homopolymerization method
  • Post-metallocene catalyst precursor, preparation method thereof, catalyst, application of catalyst, and ethylene homopolymerization method
  • Post-metallocene catalyst precursor, preparation method thereof, catalyst, application of catalyst, and ethylene homopolymerization method

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preparation example Construction

[0036] In the preparation method of catalyst precursor of the present invention, about R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 And the definition of M can be reasonably selected through the above description, and will not be repeated here.

[0037] According to the preparation method of the catalyst precursor of the present invention, considering the availability of raw materials and making the prepared catalyst precursor have higher catalytic activity, preferably, M 1 For Li.

[0038] According to the preparation method of the catalyst precursor of the present invention, considering the availability of raw materials and making the prepared catalyst precursor have higher catalytic activity, preferably, X 1 、X 2 and x 3 Each independent degree is chlorine.

[0039] According to a preferred embodiment of the present invention, R 1 is trimethylsilyl; R 2 is tert-butyl; R 3 , R 4 , R 5 , R 6 and R 7 Each independently is hydrogen; M is Ti; M 1 is Li; X 1 、X 2...

preparation example 1

[0075] This preparation example is used to illustrate the preparation of the post-metallocene catalyst precursor with the structure represented by formula (II).

[0076] Dissolve 4-tert-butyl-2,6-bis(trimethylsilylacetylene)phenol (3.00mmol) in 30mL ether solvent, add n-hexane containing n-butyllithium to the solution at -78°C The solution (the concentration of n-butyllithium in the n-hexane solution is 1.67M, and the amount of n-butyllithium used is 3.00mmol) was reacted for 1 hour, returned to 25° C., and continued to react for 15 minutes. A compound having a structure represented by formula (VII) is obtained.

[0077]

[0078] At -78 ° C, the solution of the compound containing the structure shown in the formula (VII) obtained above was transferred to the titanium metal complex (3.00 mmol) containing the cyclopentadienyl group of the structure shown in the formula (VIII) through a double angle needle in ether solution (the amount of ether used is 30 mL), and reacted at ...

preparation example 2

[0083] This preparation example is used to illustrate the preparation of the post-metallocene catalyst precursor with the structure represented by formula (II).

[0084] Dissolve 4-tert-butyl-2,6-bis(trimethylsilylacetylene)phenol (3.00mmol) in 30mL of dichloromethane solvent, and add n-butyllithium to the solution at -78°C n-hexane solution (the concentration of n-butyllithium in the n-hexane solution is 1.67M, the amount of n-butyllithium used is 3.00mmol) and then reacted for 1 hour, returned to 20°C, and continued to react for 15 minutes. A compound having a structure represented by formula (VII) is obtained.

[0085] At -78°C, the solution of the compound containing the structure shown in the formula (VII) obtained above was transferred to the titanium metal complex (3.00 mmol) containing the cyclopentadienyl group of the structure shown in the formula (VIII) through a double angle needle in dichloromethane solution (the amount of dichloromethane used is 30 mL), and reac...

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Abstract

The invention relates to the field of olefin coordination polymerization, and discloses a post-metallocene catalyst precursor, a preparation method thereof, a catalyst, an application of the catalyst, and an ethylene homopolymerization method. The catalyst precursor has a structure represented by formula (I). The preparation method of the catalyst precursor is characterized in that a compound having a structure represented by formula (IV) contacts with a compound having a structure represented by formula (V) in an organic solvent under a complexation reaction condition. The catalyst provided by the present invention contains the catalyst precursor, a boride and an alkyl aluminum compound. The present invention also provides the application of the catalyst in olefin polymerization, and further provides an ethylene homopolymerization method. The ethylene homopolymerization method is characterized in that ethylene and the catalyst are contacted and polymerized in the presence of an inert solvent under olefin polymerization conditions. The preparation method of the catalyst precursor is simple, and the catalytic efficiency of the catalyst is high.

Description

technical field [0001] The present invention relates to the field of olefin coordination polymerization, in particular to a post-metallocene catalyst precursor and its preparation method, a catalyst containing the catalyst precursor and the application of the catalyst in olefin polymerization, and an ethylene homogeneous method of gathering. Background technique [0002] Since the beginning of the 21st century, with the improvement of the national economy and the needs of the national defense industry, polymer materials, especially polyolefin materials, have played an increasingly important role: due to the abundance and low cost of polyolefin raw materials, easy processing and molding, every year in the world The polyolefin products produced within the scope exceed 100 million tons, becoming one of the largest industries; polyolefin materials have relatively small density, good chemical resistance, water resistance, good mechanical strength, electrical insulation, etc. Fea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F4/646
CPCC08F110/02C08F4/646
Inventor 韩书亮吴宁郝建国陈淑明徐林王超
Owner CHINA PETROLEUM & CHEM CORP
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