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Ingredients of catalyst for vinyl polymerization and catalyst

An ethylene polymerization and catalyst technology, applied in the field of catalysts, can solve problems such as being difficult to fully satisfy

Inactive Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the prepared catalyst component is used for ethylene polymerization, the catalytic activity of the catalyst is relatively high. Although its hydrogenation sensitivity is significantly improved compared with the catalyst in Chinese patent CN1229092A, it is still difficult to fully meet the requirements of industrial production of some high melt index special materials. grade requirements

Method used

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  • Ingredients of catalyst for vinyl polymerization and catalyst
  • Ingredients of catalyst for vinyl polymerization and catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of catalyst components

[0041] In the reactor fully replaced by high-purity nitrogen, 6.0g of magnesium dichloride, 90ml of toluene, 5.0ml of epichlorohydrin, 9.0ml of tributyl phosphate, and 6.0ml of ethanol were sequentially added, and the temperature was raised to 70°C under stirring. After completely dissolving to form a uniform solution, react at 70°C for 1 hour. Then the system was cooled to -10°C, and 60ml of titanium tetrachloride was slowly added dropwise, followed by 4.0ml of ethyl orthosilicate and 1.0ml of sodium diisooctyl succinate, and reacted for 1 hour. Slowly heat up to 80°C and react for 2 hours. Stop stirring, let it stand, the suspension will quickly separate into layers, remove the upper clear layer, wash twice with toluene, wash four times with hexane, and blow dry with high-purity nitrogen to obtain a solid catalyst component with good fluidity and narrow particle size distribution. The composition of the catalyst components is...

Embodiment 2

[0045] (1) The synthesis of the catalyst is the same as in Example 1. The amount of ethyl orthosilicate was changed to 3.0ml, and the amount of sodium diisooctyl succinate (OT75) was changed to 2.0ml.

[0046] (2) Ethylene polymerization is the same as in Example 1. The composition and polymerization results of the catalyst components are shown in Table 1 and Table 2.

Embodiment 3

[0048] (1) The synthesis of the catalyst is the same as in Example 1. The dosage of sodium diisooctyl succinate (OT75) was changed to 4.0ml.

[0049] (2) Ethylene polymerization is the same as in Example 1. The composition and polymerization results of the catalyst components are shown in Table 1 and Table 2.

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Abstract

The invention relates to ingredients of a catalyst for vinyl polymerization. The ingredients comprise the following reaction products: (1) a magnesium compound, (2) an organic alcoholic compound, (3) an organic silicon compound, (4) a sulphonate, and (5) a titanium compound, wherein the structural formula of the sulphonate is X-SO3M; X is alkyl; M is an alkali metal. The catalyst is higher in catalytic activity and hydrogen regulation sensitivity; a polymer obtained by adopting the catalyst is high in bulk density and small in size distribution; the catalyst is suitable for homopolymerization of ethylene or copolymerization between ethylene and other Alpha-alkene.

Description

technical field [0001] The present invention relates to a catalyst component for ethylene polymerization or copolymerization, its preparation method and a catalyst containing the catalyst component. More specifically, it relates to a catalyst component in which sulfonate is added in the preparation process, its preparation method and its catalyst. Background technique [0002] As we all know, catalyst systems containing Ti / Mg composites play a dominant role in the industrial production of polyethylene, and the research focuses on the catalyst's polymerization activity, hydrogen sensitivity, copolymerization performance, and catalyst particle morphology and particle size distribution. In the slurry polymerization process of ethylene, in addition to requiring the catalyst to have high catalytic activity, the hydrogenation sensitivity of the catalyst is very important. It can be said that in the slurry polymerization process of ethylene, the hydrogen adjustment sensitivity dir...

Claims

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Application Information

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IPC IPC(8): C08F10/02C08F4/646
Inventor 苟清强郭子芳周俊领王洪涛张韬毅俸艳芸杨红旭李颖朱孝恒
Owner CHINA PETROLEUM & CHEM CORP
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