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Catalyst component for olefin polymerization as well as preparation method and application of catalyst component

An olefin polymerization and catalyst technology, applied in the application and field of olefin polymerization reaction, can solve the problems of large titanium tetrachloride, the comprehensive performance of catalyst needs to be further improved, etc.

Active Publication Date: 2018-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of titanium tetrachloride used in the synthesis process of this catalyst is relatively large, and the comprehensive performance of the catalyst needs to be further improved.

Method used

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  • Catalyst component for olefin polymerization as well as preparation method and application of catalyst component
  • Catalyst component for olefin polymerization as well as preparation method and application of catalyst component
  • Catalyst component for olefin polymerization as well as preparation method and application of catalyst component

Examples

Experimental program
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Effect test

preparation example Construction

[0078] The preparation method of catalyst component for olefin polymerization provided by the invention comprises the steps:

[0079] (1) In the presence of a hydrocarbon solvent, contact anhydrous magnesium chloride and an alcohol compound at a temperature of 30-150°C for 0.5-10h, preferably at a temperature of 60-140°C for 0.5-6h, to obtain a uniform Alcoholate solution; wherein, the molar ratio of anhydrous magnesium chloride to alcohol compounds is 1:2-4, preferably 1:2.5-3.5;

[0080] (2) Add the eluting agent to the above alcoholate solution, wherein the molar ratio of anhydrous magnesium chloride to the eluting agent is 1:(0.01-0.9), preferably 1:(0.01-0.33), more preferably 1 :(0.03-0.20);

[0081] Add the above-mentioned alcoholate solution with precipitation aid to the mixture of titanium compound and inert diluent at -40°C to 0°C, and make them contact and react at a temperature of -40°C to 0°C by stirring 3- 5 hours, then raise the temperature to 50-150°C, prefer...

preparation example 1

[0094] Preparation of amino ester compound A (N, N-di-n-butylaminoacetate):

[0095] Add di-n-butylamine (77.4g, 0.6mol) in 1000mL there-necked flask, K 2 CO 3 (82.8g, 60mmol), KI (1.8g, 12mmol), acetonitrile (400mL), was added dropwise with ethyl bromoacetate (85.8g, 0.51mmol), and refluxed for 8 hours; after the reaction was completed, the cooling system was filtered to remove salt, Wash the solid with 2×100mL dichloromethane, wash the organic phase with 2×100mL saturated brine, dry the organic phase with anhydrous sodium sulfate, filter, distill off the solvent under reduced pressure, and rectify to obtain the product (5mmHg, 64°C).

[0096] Carry out NMR determination to product, test method and result are: 1 HNMR (CDCl 3 / TMS,300MHz)δ(ppm):0.67-0.88(t,6H,-NCH 2 CH 2 CH 2 CH 3 ),1.05-1.17(q,4H,-NCH 2 CH 2 CH 2 CH 3 ),1.20-1.29 (tetra,3H,-COOCH 2 CH 3 ), 1.20-1.49 (m,4H,-NCH 2 CH 2 CH 2 CH 3 ),2.30-2.70(m,4H,-NCH 2 CH2 CH 2 CH 3 ),3.30(s,2H,-NCH 2 COOEt...

preparation example 2

[0098] Preparation of amino ester compound B (N, N-di-n-octylaminoacetate)

[0099] The method is the same as that in Preparation Example 1, except that di-n-butylamine is replaced by di-n-octylamine to prepare N,N-di-n-octylaminoacetate ethyl ester.

[0100] Carry out NMR determination to product, test method and result are: 1 H NMR (CDCl 3 / TMS,300MHz)0.86-0.93(m,6H,-NC 7 h 14 CH 3 ),1.27(tetra,3H,-COOCH 2 CH 3 ), 1.27(m,20H,-NCH 2 CH 2 C 5 h 10 CH 3 ),1.49(m,4H,-NCH 2 CH 2 C 5 h 10 CH 3 ), 2.30-2.60 (m,4H,-NCH 2 C 7 h 15 ),3.30(s,2H,-NCH 2 COOEt), 4.13 (tetra,2H,-COOCH 2 CH 3 ).

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Abstract

The invention discloses a preparation method of a catalyst component for olefin polymerization. The preparation method comprises steps as follows: magnesium halide and alcohol compounds are subjectedto a first contact reaction in the presence of a hydrocarbon solvent, and a uniform solution is formed; in the presence of a precipitation aid, the uniform solution and a titanium compound are subjected to a second contact reaction to separate out solid precipitates, and a mixture containing the solid precipitates is obtained; the mixture and an internal electron donor compound are subjected to athird contact reaction, and a suspension liquid is obtained; the precipitation aid contains amino ester compounds shown as the formula (I) in the description. The catalyst component prepared with themethod has better particle morphology, has higher yield when used for preparing a catalyst for olefin polymerization, is excellent in comprehensive performance when applied to olefin polymerization, and has good hydrogen sensitivity.

Description

technical field [0001] The present invention relates to a method for preparing a catalyst component for olefin polymerization, and the catalyst component for olefin polymerization prepared by the method, the application of the catalyst component for olefin polymerization in a catalyst system for olefin polymerization, an olefin polymerization The catalyst system, the application of the catalyst system for olefin polymerization in olefin polymerization and the olefin polymerization method belong to the field of olefin polymerization. Background technique [0002] The solid particle type polyolefin catalyst with magnesium, titanium, halogen and electron donor as the basic components is firstly prepared into a uniform solution of magnesium chloride, and then precipitated by crystallization and loaded with titanium-containing active components. In the dissolution and elution system, only with the presence of a precipitation aid can it be possible to obtain solids with uniform pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F10/06C08F4/651C08F4/649
CPCC08F10/00C08F10/06C08F4/651C08F4/6495
Inventor 周奇龙谭忠张锐徐秀东于金华宋维玮尹珊珊李风奎
Owner CHINA PETROLEUM & CHEM CORP
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