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Non-metallocene compound and ethylene-styrene copolymer, preparation method of non-metallocene compound and ethylene-styrene copolymer, catalyst composition for olefin polymerization and application of catalyst composition

A non-metallocene and compound technology, applied in the field of catalysts, can solve the problems of low content of ethylene structural units, inability to obtain toughness, insufficient activity of olefin polymerization catalysts, etc., and achieve the effects of good toughness and high catalytic activity.

Active Publication Date: 2018-03-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the activity of the olefin polymerization catalyst provided by the above-mentioned prior art is not high enough, and when the olefin polymerization catalyst provided by the method of the above-mentioned prior art catalyzes the copolymerization of ethylene monomer and vinyl aromatic monomer, the obtained copolymerization The content of ethylene structural units in the compound is too low, so that better toughness cannot be obtained

Method used

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  • Non-metallocene compound and ethylene-styrene copolymer, preparation method of non-metallocene compound and ethylene-styrene copolymer, catalyst composition for olefin polymerization and application of catalyst composition
  • Non-metallocene compound and ethylene-styrene copolymer, preparation method of non-metallocene compound and ethylene-styrene copolymer, catalyst composition for olefin polymerization and application of catalyst composition
  • Non-metallocene compound and ethylene-styrene copolymer, preparation method of non-metallocene compound and ethylene-styrene copolymer, catalyst composition for olefin polymerization and application of catalyst composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The non-metallocene compound shown in preparation formula (1), wherein, R 11 and R 12 is methyl, R 13 is H, M is titanium, Y is a phosphinimine group shown in formula (2), and R 21 , R 22 and R 23 Both are tert-butyl, X is Cl, m is 1, and n is 2, which is (2,6-dimethylphenoxy)tri-tert-butylphosphinimine titanium dichloride.

[0092] At -78°C, in 100 mL of toluene, 5 mL of toluene solution dissolved with 10 mmol of titanium tetrachloride was slowly added dropwise to 10 mmol of tri-tert-butylphosphinoimidetrimethylsilane in toluene (10 mL) to react for 12 h, The excess toluene was removed under reduced pressure to obtain tri-tert-butylphosphinimine titanium trichloride.

[0093] At -78°C, 2,6-dimethylphenol (10 mmol) was dissolved in 50 mL of toluene, and 20 mL of the aforementioned tri-tert-butylphosphinimine titanium trichloride solution in toluene was slowly added dropwise. After the dropwise addition, the temperature was slowly raised to reflux for 12 h, and exc...

Embodiment 2

[0097] The non-metallocene compound shown in preparation formula (1), wherein, R 11 and R 12 is methyl, R 13 is H, M is titanium, Y is a phosphinimine group shown in formula (2), and R 21 , R 22 and R 23 Both are tert-butyl, X is methyl, m is 1, and n is 2, that is, (2,6-dimethylphenoxy) tri-tert-butylphosphinoimide dimethyltitanium.

[0098] (2,6-dimethylphenoxy)tri-tert-butylphosphinimine titanium dichloride was prepared by the same method as in Example 1.

[0099] Dissolve 10mmol of (2,6-dimethylphenoxy)tri-tert-butylphosphinimine titanium dichloride in 10mL of ether, add 50mL of ether solution containing 30mmol of MeMgBr under stirring, and react at 25°C for 12h , The solvent was removed under reduced pressure, the product was washed 3 times with pentane, and dried under vacuum to obtain the target product with a yield of 89% (calculated using tri-tert-butylphosphinimidotrimethylsilane as the starting material).

[0100] The characterization data of gained (2,6-dimet...

Embodiment 3

[0103] The non-metallocene compound shown in preparation formula (1), wherein, R 11 and R 12 is tert-butyl, R 13 is H, M is zirconium, Y is a phosphinimine group shown in formula (2), and R 21 , R 22 and R 23 Both are tert-butyl, X is Cl, m is 1, and n is 2, which is (2,6-di-tert-butylphenoxy) tri-tert-butylphosphinoimide zirconium dichloride.

[0104] At -78°C, in 100 mL of toluene, 5 mL of toluene solution dissolved with 14 mmol of zirconium tetrachloride was slowly added dropwise to 10 mmol of tri-tert-butylphosphinoimidetrimethylsilane in toluene solution (10 mL) to react for 12 h, The excess toluene was removed under reduced pressure to obtain tri-tert-butylphosphinimine zirconium trichloride.

[0105]At -78°C, 2,6-di-tert-butylphenol (12 mmol) was dissolved in 50 mL of toluene, and 20 mL of the aforementioned toluene solution of tri-tert-butylphosphinimine zirconium trichloride was slowly added dropwise. After the dropwise addition, the temperature was slowly raise...

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Abstract

The invention relates to the field of catalysts, and discloses a non-metallocene compound and an ethylene-styrene copolymer, a preparation method of the non-metallocene compound and the ethylene-styrene copolymer, a catalyst composition for olefin polymerization and an application of the catalyst composition. The non-metallocene compound has the structure shown in a formula (I). The catalyst composition for olefin polymerization provided by the invention comprises a main catalyst and a cocatalyst, wherein the main catalyst is the non-metallocene compound provided by the invention, and the co-catalyst contains an aluminum-containing compound and an optional organic boron compound. The catalyst composition for olefin polymerization provided by the invention has the advantage of high catalytic activity. The catalyst composition provided by the invention can be used to catalyze the olefin polymerization of an ethylene monomer and a vinyl aromatic monomer, so that the single ethylene-styrene copolymer with relatively high content of ethylene structure units and can be obtained, and therefore, the toughness of the obtained copolymer is obviously better than the toughness of polymers in the prior art.

Description

technical field [0001] The present invention relates to the field of catalysts, in particular to a non-metallocene compound, a method for preparing a non-metallocene compound, a non-metallocene compound prepared by the method, a catalyst composition for olefin polymerization, and the olefin polymerization The application of the catalyst composition in catalyzing the copolymerization of ethylene monomer and vinyl aromatic monomer, and a method for preparing ethylene-styrene copolymer. Background technique [0002] According to the arrangement of benzene rings in styrene on the polymer molecular chain, polystyrene has three structures: random, isotactic and syndiotactic. Among them, syndiotactic polystyrene (sPS) has high crystallinity, high melting point (~270°C), low density and chemical corrosion resistance (Richardo P, Nicoletta C, Prog Polym Sci, 1996, 21:85-86). However, the high brittleness of syndiotactic polystyrene brings difficulties to its wide application. Howeve...

Claims

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Application Information

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IPC IPC(8): C08F210/02C08F212/08C08F4/642C08F4/643C08F4/656
CPCC08F210/02C08F212/08C08F4/6428C08F4/643C08F4/6562
Inventor 陈建军王铁石唐正伟徐一兵徐林冯增国常学工
Owner CHINA PETROLEUM & CHEM CORP
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