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Load type non-metallocene catalyst and preparation thereof

A non-metallocene and non-metallocene ligand technology is applied in the field of supported non-metallocene catalysts, which can solve the problems of high temperature, unstable performance and low olefin polymerization activity in the supported process.

Inactive Publication Date: 2009-04-22
SINOPEC YANGZI PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this catalyst is that the loading process requires high temperature and high vacuum, which is suitable for industrial production
[0016] Even so, the common problem of the supported non-metallocene catalysts in the prior art is that the olefin polymerization activity is low and difficult to adjust, and in order to improve its polymerization activity, a higher amount of cocatalyst must be assisted when carrying out olefin polymerization
In addition, when using the supported non-metallocene catalysts of the prior art, the obtained polymers such as polyethylene have low polymer bulk density and poor polymer morphology
Moreover, the supported non-metallocene catalysts in the prior art also have the problem of unstable performance

Method used

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  • Load type non-metallocene catalyst and preparation thereof
  • Load type non-metallocene catalyst and preparation thereof
  • Load type non-metallocene catalyst and preparation thereof

Examples

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preparation example Construction

[0102] First, the present invention relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: treating the porous support with one selected from a chemical treatment agent and a non-metallocene ligand to obtain a modified porous support, wherein The chemical treatment agent is selected from Group IVB metal compounds; and the modified porous carrier is contacted with the other party selected from the chemical treatment agent and the non-metallocene ligand, thereby obtaining the supported non-metallocene Metal Catalyst Contacting Step.

[0103] The porous carrier used in the present invention can be any porous solid with functional groups on the surface, such as one or more selected from organic materials containing surface organic functional groups and inorganic materials containing surface functional groups. The organic material of functional group is for example selected from having surface organic functional group (such as being...

Embodiment 1

[0262] The porous carrier is silica gel, the model is ES757 of Ineos Company, which is continuously calcined at 600° C. under N2 atmosphere for 4 hours before use.

[0263] Weigh 5g of the heat-activated silica gel, add 50ml of hexane, add the chemical treatment agent titanium tetrachloride dropwise for 30 minutes under stirring, stir and react at 60°C for 4 hours, filter, wash with hexane three times, and The amount of hexane was 25 ml, and then heated to 60° C. and dried for 2 hours to obtain a modified porous carrier. Wherein, the ratio of titanium tetrachloride to carrier is 9.4 mmol: 1 gram.

[0264] will have the formula The non-metallocene ligand was dissolved in hexane, then added to the modified porous carrier, stirred and reacted for 4 hours, filtered, washed twice with hexane, each time 25ml of hexane was used, and then dried at 25°C for 6 hours to obtain the supported non-metallocene ligand. metal catalyst.

[0265] The mass concentration of the ligand is 0.045...

Embodiment 1-1

[0268] Basically the same as Example 1, but with the following changes:

[0269] The porous carrier is selected from Al2O3, and the thermal activation conditions are 800°C, N 2 Continuous roasting under atmosphere for 12h.

[0270] The ratio of titanium tetrachloride to carrier is 14 mmol: 1 gram, and the solvent is changed to decane.

[0271] The non-metallocene ligand is changed to The mass concentration of the ligand is 0.12 g / ml, the ratio of the non-metallocene ligand to the porous carrier is: 0.386 mmol: 1 g, and the solvent for dissolving the non-metallocene ligand is changed to decane.

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Abstract

The invention relates to a supported non-metallocene catalyst. The supported non-metallocene catalyst is obtained by a non-metallocene ligand and a transition metal compound which directly react on a carrier through an in-situ supporting method. The preparation method for the supported non-metallocene catalyst has simple and feasible process, and has wide adjustable range of the supporting capacity and the polymerization activity of the catalyst. When the supported non-metallocene catalyst is combined with a catalyst promoter to catalyze the homopolymerization / copolymerization of olefins, high polymerization activities of the olefins can be obtained only by the less using amount of the catalyst promoter.

Description

technical field [0001] The invention relates to a supported non-metallocene catalyst for olefin polymerization. Specifically, the present invention relates to a supported non-metallocene catalyst, which is obtained by directly reacting a non-metallocene ligand and a transition metal compound on a carrier through an in-situ loading method. By combining the supported non-metallocene catalyst of the present invention with a cocatalyst such as aluminoxane or alkylaluminum, it can be used to catalyze the homopolymerization / copolymerization of olefins. Background technique [0002] The non-metallocene catalysts that appeared in the middle and late 1990s, also known as post-metallocene catalysts, the central atoms of the main catalysts include almost all transition metal elements, which have reached or even surpassed metallocene catalysts in some performance aspects, becoming The fourth generation of olefin polymerization catalysts after Ziegler, Ziegler-Natta and metallocene cata...

Claims

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Application Information

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IPC IPC(8): C08F4/65C08F4/02C08F10/00
Inventor 顾越峰李传峰马忠林王亚明柏基业陈韶辉李晓强
Owner SINOPEC YANGZI PETROCHEM
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