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Olefin/polar alpha-olefin copolymer and preparation method and uses

An olefin copolymer, a technology of the copolymer, which is applied to the application of the above-mentioned copolymer and the preparation field of the above-mentioned copolymer, can solve the problems of low molecular weight, inability to prepare a stereoregularity-functionalized polyolefin, etc., and achieves the improvement of compatibility. Effect

Inactive Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they are not sensitive to polar groups, there are still two problems: first, they are prone to chain transfer reactions when used in olefin polymerization, resulting in low molecular weight; second, they cannot prepare functionalized polymers with high tacticity. Olefin

Method used

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  • Olefin/polar alpha-olefin copolymer and preparation method and uses
  • Olefin/polar alpha-olefin copolymer and preparation method and uses
  • Olefin/polar alpha-olefin copolymer and preparation method and uses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0214] Example 1: Ethylene / polar α-olefin copolymer

[0215]

[0216] Under the protection of nitrogen, add 100 mL of dry toluene to a 250 mL dry deoxygenated glass reactor equipped with mechanical stirring, and add 8.0 mmol triisobutyl aluminum Al( i Bu) 3 , 8.0mmol undecenol and 0.55mL methylaluminoxane (MAO, 1.4mol / L toluene solution, Al / Zr=770), feed ethylene gas with a pressure of 76mmHg, and place the reactor in a water bath at 25℃ In the polymerization reaction, adding 1.0×10 -6 mol catalyst (see the structure shown in formula (VIII) above). After 5 minutes of polymerization, 5 mL of hydrochloric acid was added to acidify the ethanol to terminate the polymerization reaction, and the polymerized product was washed and filtered with ethanol and dried in vacuum until constant weight. The obtained polymer 1.6g, 1 HNMR test contains 0.67 mol% of undecenol.

[0217] Others are the same as in Example 1. The operating conditions and characteristics of polyethylene / undecenol are l...

Embodiment 8

[0220] Example 8: Propylene / polar α-olefin copolymer

[0221] Other conditions are exactly the same as in Example 1. Propylene gas is used instead of ethylene gas, undecylenic acid is used instead of undecenol, Al(iBu) 3 The molar ratio to undecylenic acid=2, and the content of polar α-olefin in the obtained polymer is 0.10 mol%.

Embodiment 9

[0222] Example 9: 1,5-hexadiene / polar α-olefin copolymer

[0223] Under the protection of nitrogen, add 90 mL of dry toluene to a 250 mL dry deoxygenated glass reactor equipped with mechanical stirring, and add 8.0 mmol triisobutyl aluminum Al( i Bu) 3 , 8.0mmol undecenol and 0.55mL methylaluminoxane (MAO, 1.4mol / L toluene solution, Al / Zr=770), 10mL dry 1,5-hexadiene monomer, put the reactor in In the water bath at 25℃, the polymerization reaction is added 1.0×10 -6 Start after mol catalyst. After 24 hours of polymerization, 5 mL of hydrochloric acid was added to acidify the ethanol to terminate the polymerization reaction, and the polymerized product was washed and filtered with ethanol and dried in vacuum until constant weight. 1.2 g of the obtained polymer, 1 HNMR test contains 3.04 mol% of polar α-olefin.

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Abstract

The invention provides the alkene polymerization catalyst which possesses high polymerization activity and the method of preparing alkene polar monomer copolymer by using the said catalyst. The catalyst comprises (A) and (B). The (A) comprises transition metal compound whose general formula is (I), and the (B) comprises the metal organic compound or organic aluminoxane compound or ionized ionic compound. In the transition metal compound of general formula (I), the M is at the ó¾B or ó¶B in the periodic table of elements, m is a integer between 1 and 3, R1 is alkene, R2 - R5 are H, halogen, hydrocarbon radical and so on, R6 is halogen or hydrocarbon radical and so on, and X is halogen or hydrocarbon radical and so on. The alkene used in combined polymerization comprises the all alkene which can coordinate and polymerize, the polar monomer comprises the ª‡-alkene polar monomer which can coordinate and polymerize and includes NíóOíóPíóSíóBíóSi, halogen and so on.

Description

Technical field [0001] The present invention relates to an olefin / polar α-olefin copolymer. Specifically, the present invention relates to an olefin / polar α-olefin copolymer containing various polar groups and having a specific molecular weight and composition. [0002] The invention also relates to a method for preparing the above copolymer. [0003] The present invention also relates to the application of the above-mentioned copolymer. Background technique [0004] The copolymerization of olefins with other α-olefins, non-conjugated diolefins, cyclic olefins and acrylate polar monomers is one of the effective methods to improve the physical and chemical properties of polyolefins. The addition of comonomers can provide reactive groups while improving the physical and mechanical properties of polyolefins. On the other hand, the introduction of functional groups in the polymerization reaction to carry out simple, effective and feasible functional modification of polyolefin product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F4/54
Inventor 胡友良陈商涛张晓帆吕英莹李化毅张志成
Owner CHINA PETROLEUM & CHEM CORP
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