Ethylene-alpha-olefin copolymer, manufacturing method and applications thereof

A technology of an olefin copolymer and a manufacturing method, which is applied in the field of ethylene copolymer and can solve the problems of poor processing performance and small application range of ultra-high molecular weight polyethylene.

Active Publication Date: 2015-11-04
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high molecular weight, the UHMWPE has poor processability and can only be applied to wear-resistant products such as sintering molding and low-speed extrusion pipes, and the application range is small.

Method used

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  • Ethylene-alpha-olefin copolymer, manufacturing method and applications thereof

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Experimental program
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Effect test

preparation example Construction

[0146] According to the present invention, the preparation method of the supported non-metallocene catalyst comprises the following steps: dissolving the magnesium compound and the non-metallocene ligand in a solvent in the presence of alcohol to obtain a solution of the magnesium compound; adding a precipitant to the solution or drying the magnesium compound solution to obtain a magnesium compound carrier; and contacting the magnesium compound carrier with a silicon compound of formula (X) and a chemical treatment agent selected from group IVB metal compounds to obtain the magnesium compound carrier Describe the steps of the supported non-metallocene catalyst.

[0147] The steps for obtaining the magnesium compound solution are specifically described below.

[0148] According to this procedure, the magnesium compound and the non-metallocene ligand are dissolved in an appropriate solvent (also referred to as a solvent for dissolving the magnesium compound) in the presence of a...

Embodiment 1

[0467] Anhydrous magnesium chloride is used for the magnesium compound, tetrahydrofuran is used for the solvent, n-butanol is used for the alcohol, tetraethoxy silicon is used for the silicon compound, titanium tetrachloride is used for the chemical treatment agent of group IVB metal compounds, hexane is used for the precipitating agent, and hexane is used for the non-metallocene compound. The body adopts the structure of compound of.

[0468] Weigh 5g of anhydrous magnesium chloride, add solvent, non-metallocene ligand and alcohol, and dissolve completely at normal temperature to obtain a magnesium compound solution, add a precipitating agent to the magnesium compound solution to make it completely precipitate, filter, and wash 3 times with a precipitating agent. The amount of the secondary precipitating agent is 60ml, and it is uniformly heated to 60° C. and vacuum-dried to obtain a magnesium compound carrier.

[0469] Add the prepared magnesium compound carrier into the ...

Embodiment 2

[0473] Basically the same as Example 1, but with the following changes:

[0474] Before the magnesium compound carrier is in contact with the silicon compound and the chemical treatment agent, the magnesium compound carrier is first treated with the auxiliary chemical treatment agent triethylaluminum.

[0475] That is, the magnesium compound carrier is added to the hexane solvent, and then the auxiliary chemical treatment agent triethylaluminum (concentration: 0.88mol / L, hexane solution) is slowly added dropwise, stirred at 60°C for 2 hours, filtered, and washed with hexane 3 times, each time with the same amount of solvent added before, and finally vacuum-dried at 60° C. to obtain a pretreated magnesium compound carrier. The molar ratio of the magnesium compound carrier calculated as Mg element to the auxiliary chemical treatment agent calculated as Al element is 1:0.2.

[0476] Supported non-metallocene catalysts are designated CAT-2.

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Abstract

The present invention relates to an ethylene-alpha-olefin copolymer and a manufacturing method thereof, and applications of the ethylene-alpha-olefin copolymer in molding product manufacturing, wherein the ethylene-alpha-olefin copolymer exhibits balanced and excellent processability and mechanical properties compared with the ethylene-alpha-olefin copolymer in the prior art.

Description

technical field [0001] The present invention relates to an ethylene copolymer. Specifically, the present invention relates to an ethylene-α-olefin copolymer, a method for its production and its use in the manufacture of shaped articles. Background technique [0002] Polyolefin is the largest synthetic resin in the world and has a very broad application market. Polyolefins mainly include polyethylene (PE), polypropylene (PP) and copolymers of ethylene and propylene, 1-butene, 1-hexene and 1-octene and other α-olefins. [0003] In general, the strength of polyolefins such as polyethylene depends on its molecular weight. The higher the molecular weight, the higher the strength, elasticity and environmental stress cracking resistance of the material, but the processing performance of polyethylene with higher molecular weight will be poor. For this reason, it is known that increasing the molecular weight distribution of the polymer can achieve a balance among the rigidity, toug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F4/646C08F4/02C08F2/06C08L23/08
Inventor 李传峰任鸿平易玉明汪文睿郭峰阚林柏基业杨爱武
Owner SINOPEC YANGZI PETROCHEM
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