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Catalyst composition used in olefin polymerization and application thereof

An olefin polymer and catalyst technology, applied in the field of olefin polymerization catalysts, can solve the problems of long carbon chain, high cost, complicated preparation and the like

Active Publication Date: 2015-04-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long carbon chain of this dicarboxylic acid ester, the preparation is complicated and the cost is high

Method used

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  • Catalyst composition used in olefin polymerization and application thereof
  • Catalyst composition used in olefin polymerization and application thereof
  • Catalyst composition used in olefin polymerization and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0060] 1. Preparation of solid catalyst component a

[0061] In the reactor fully replaced by high-purity nitrogen, 6.0g of magnesium chloride, 119ml of toluene, 5ml of epichlorohydrin, and 15.6ml of tributyl phosphate (TBP) were sequentially added, and the temperature was raised to 50°C under stirring and maintained for 2.5 hours. Dissolve completely; add 1.7g of phthalic anhydride and continue to maintain for 1 hour; cool the solution to below -25°C and add TiCl dropwise within 1 hour 4 70ml. Slowly raise the temperature to 80°C, and gradually precipitate solids during the heating process; add 6 mmol of internal electron donor compounds, maintain the temperature for 1 hour, filter, add 80 ml of toluene, and wash twice to obtain solid precipitates.

[0062] Then add toluene 60ml, TiCl 4 40ml, heated up to 100°C, treated for 2 hours, drained the filtrate, then added 60ml of toluene, TiCl 4 40ml, heated to 100°C, treated for 2 hours, drained the filtrate; added 60ml of tolue...

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PUM

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Abstract

The invention relates to a catalyst composition used in an olefin polymerization reaction. The catalyst composition includes a solid catalyst component A, aluminum alkyl B and an external electron donor halogen-free malonate C, wherein the solid catalyst component A includes at least one of magnesium, titanium, a halogen and an internal electron donor containing lone pair electrons, such as a dialcohol ester compound (I); and the external electron donor C is a halogen-free malonate compound represented as the general formula (II). When the olefin polymerization reaction is carried out with the solid catalyst component A in the presence of the external electron donor C, the solid catalyst component A is very high in activity and especially is greatly enhanced in hydrogen-regulation sensitivity. In addition, some molecular weight distributions of the catalyst become wider and the external electron donor has a high-temperature self-quenching function.

Description

technical field [0001] The invention belongs to the technical field of olefin polymerization catalysts, and relates to a catalyst composition for olefin polymerization and an application thereof. Background technique [0002] It is well known that solid titanium catalyst components based on magnesium, titanium, halogen and electron donors can be used in olefin polymerization, especially in the polymerization of α-olefins with 3 or more carbon atoms. Polymers with higher yield and higher stereoregularity, in which the electron donor compound is one of the essential components in the catalyst component, and with the development of the internal electron donor compound, the polyolefin catalyst is constantly updated, External electron donors also need to be developed in conjunction with internal electron donors. At present, a variety of electron donor compounds have been disclosed in large numbers, such as internal electron donor monocarboxylic acid esters or polycarboxylic acid...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/649C08F110/06
Inventor 李昌秀高明智李现忠刘海涛马晶马吉星蔡晓霞陈建华胡建军王军
Owner CHINA PETROLEUM & CHEM CORP
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