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Olefin polymerization catalyst solid component, preparation method thereof, olefin polymerization catalyst and application

A solid component, olefin polymerization technology, applied in the field of olefin polymerization catalysts and their applications, olefin polymerization catalyst solid components and their preparation fields, can solve problems such as the inability to meet the needs of industrial production, achieve good activity and copolymerization performance, The effect of high hydrogen modulation sensitivity and simple preparation process

Pending Publication Date: 2021-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The electron donors mentioned above can only improve the performance of olefin polymerization catalysts in one aspect, and cannot meet the needs of industrial production.

Method used

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  • Olefin polymerization catalyst solid component, preparation method thereof, olefin polymerization catalyst and application
  • Olefin polymerization catalyst solid component, preparation method thereof, olefin polymerization catalyst and application
  • Olefin polymerization catalyst solid component, preparation method thereof, olefin polymerization catalyst and application

Examples

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Effect test

preparation example Construction

[0032] According to the present invention, the above-mentioned olefin polymerization catalyst solid component can be prepared by various methods, preferably, according to the second aspect of the present invention, the preparation method of the olefin polymerization catalyst solid component comprises the following steps:

[0033] (1) under stirring, the alkoxymagnesium compound is dispersed in an inert solvent to form a suspension;

[0034] (2) Under stirring, the suspension is contacted with the internal electron donor halogenated hydrocarbon compound and aromatic ester compound, and the halide of transition metal titanium and / or its derivatives, and then solid-liquid separation and washing ;

[0035] Wherein, the general formula of the halogenated hydrocarbon compound is R m 1 x a R 2 n x b R 3 p x c , where R 1 , R 2 , R 3 each independently for C 1 -C 20 Alkyl, C 3 -C 20 alicyclic or C 6 -C 20 Aryl, m, n, p are each independently an integer of 0-10, but m...

Embodiment 1

[0066] This example is used to illustrate the preparation of the solid component of the olefin polymerization catalyst provided by the present invention and the polymerization reaction using the obtained olefin polymerization catalyst.

[0067] (1) Preparation of olefin polymerization catalyst solid component A1

[0068] In the reactor fully replaced by high-purity nitrogen, 4.8 g of magnesium alkoxide and 60 mL of toluene were sequentially added to form a suspension at a stirring speed of 300 rpm. Cool the system down to -20°C, add 3ml of 1,2-dichloroethane and 2ml of ethyl benzoate in sequence, then add 40mL of titanium tetrachloride dropwise, keep the temperature for 30 minutes, raise the temperature to 80°C, and react for 2 hours . Stop stirring, let it stand, the suspension will be layered quickly, and the supernatant will be sucked out. Add 60 mL of toluene and 20 mL of titanium tetrachloride, raise the temperature to 80° C., and keep the temperature constant for 2 hou...

Embodiment 2

[0077] This example is used to illustrate the preparation of the solid component of the olefin polymerization catalyst provided by the present invention and the polymerization reaction using the obtained olefin polymerization catalyst.

[0078] (1) Preparation of olefin polymerization catalyst solid component A2

[0079] The olefin polymerization catalyst solid component A2 was prepared according to the method of Example 1, except that only 1,2-dichloroethane was replaced with 1,2,3-trichloropropane, and its composition is shown in Table 1.

[0080] (2) homopolymerization reaction

[0081] Homopolymerization was carried out according to the method of Example 1, except that the solid component of the olefin polymerization catalyst was the solid component A2 of the olefin polymerization catalyst prepared in this example, and the polymerization results are shown in Table 1 and Table 2.

[0082] (3) Copolymerization reaction

[0083] The copolymerization reaction was carried out...

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Abstract

The invention belongs to the field of olefin polymerization catalysts, and discloses an olefin polymerization catalyst solid component and a preparation method thereof, an olefin polymerization catalyst and application of the olefin polymerization catalyst solid component and the olefin polymerization catalyst, the olefin polymerization catalyst solid component contains titanium, magnesium and an internal electron donor, and the internal electron donor contains a halogenated hydrocarbon compound and an aromatic ester compound. The olefin polymerization catalyst solid component provided by the invention are added with internal electron donors, namely the aromatic ester compound and the halogenated hydrocarbon compound, so that the obtained olefin polymerization catalyst can show good activity and copolymerization performance, and high polymerization activity and high polymer melt index can be displayed under the polymerization condition of high hydrogen-ethylene ratio.

Description

technical field [0001] The invention belongs to the field of olefin polymerization catalysts, and furthermore, relates to a solid component of olefin polymerization catalysts, a preparation method thereof, olefin polymerization catalysts and their applications. Background technique [0002] After nearly 60 years of development, Ziegler-Natta type polyethylene catalysts have made good progress in terms of activity, powder bulk density, fine powder content, oligomers, etc., and basically meet the requirements of existing industrial production. With the development of new products, when producing bimodal resin products, the existing catalyst needs to add a large amount of comonomer, which is likely to cause problems such as sticky resin, fouling of the reactor, and short safe operation period of the device. In order to better meet the needs of industrial production and produce resin products with better performance, it is necessary to provide catalyst products with excellent co...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/02C08F210/16C08F4/649
CPCC08F110/02C08F210/16C08F10/00C08F4/6494C08F4/6493
Inventor 杨红旭郭子芳苟清强黄庭安京燕李颖俸艳芸王毅贾凡曹昌文马冬徐世媛
Owner CHINA PETROLEUM & CHEM CORP
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