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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 the problem that the copolymerization performance is difficult to fully meet the copolymerization performance and the like

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

AI Technical Summary

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 overall performance is significantly improved compared with the catalyst in the Chinese patent CN1229092A, it is still difficult to fully meet the requirements of industrial production in terms of copolymerization performance and other aspects. Demand for special material grades with higher performance requirements

Method used

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  • Ingredients of catalyst for vinyl polymerization and catalyst
  • 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

[0043] (1) Preparation of catalyst components

[0044] 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 tetraethylorthosilicate and 2.0ml of 10-carbon polyoxyethylene ether (XP70), 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 catalys...

Embodiment 2

[0048] (1) The synthesis of the catalyst is the same as in Example 1. The amount of tetraethyl orthosilicate was changed to 3.0ml, and the amount of 10-carbon polyoxyethylene ether (XP70) was changed to 3.0ml.

[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.

Embodiment 3

[0051] (1) The synthesis of the catalyst is the same as in Example 1. The amount of 10-carbon polyoxyethylene ether (XP70) is changed to 4.0ml.

[0052] (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 non-ionic surfactant, and (5) a titanium compound, wherein the structural formula of the organic silicon compound is at least one of R<1>xR<2>ySi(OR<3>)z, wherein R<1> and R<2> are respectively alkyl or halogen of which the carbon numbers are 1 to 10; R<3> is alkyl of which the carbon number is 1 to 10; x, y and z are integral numbers; x is larger than or equal to 0 and smaller than or equal to 2; y is larger than or equal to 0 and smaller than or equal to 2; z is larger than or equal to 0 and smaller than or equal to 4; x+y+z=4; the non-ionic surfactant is at least one of the periodic copolymers of a poly-oxyethylene ether compound, a carbon oxo alcohol ethoxy compound and an epoxy compound. The catalyst is relatively high in catalytic activity and copolymerization performance; a polymer prepared with the catalyst is relatively high in bulk density and relatively small in size distribution; the catalyst is suitable for homopolymerization of ethylene or copolymerization of ethylene and other Alpha-olefin.

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 a nonionic surfactant is added in the preparation process, a preparation method thereof, and a catalyst thereof. 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 the high catalytic activity of the catalyst, the copolymerization performance of the catalyst is very important. Under the condition of controlling the appropriate density, the excellent copolymerization p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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