Catalyst components in use for polymerizing ethylene, and catalyst

A technology of ethylene polymerization and catalyst, applied in the field of catalyst components, can solve the problems of expensive equipment, uneven catalyst particles, low production efficiency, etc., and achieve the effect of high catalytic activity

Active Publication Date: 2007-05-09
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the carrier particles are too small, they are easy to aggregate and cause inhomogeneity of the catalyst particles. In order to increase the size of the supported catalyst particles and improve the fluidity
This patent adopts the method of spray drying in the preparation of the catalyst. The mother liquor is mixed with the silica gel filler, and then prepared by the method of spray drying. The loading capacity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] (1) Preparation of catalyst component: in the reactor fully replaced by high-purity nitrogen, add 4.0g magnesium dichloride successively, toluene 80ml, epichlorohydrin 4.0ml, tributyl phosphate 4.0ml, ethanol 6.4ml, The temperature was raised to 70° C. under stirring, and the reaction was carried out at 70° C. for 1 hour when the solid was completely dissolved to form a uniform solution. Cool down to 30°C, add 4.8ml of diethylaluminum chloride with a concentration of 2.2M dropwise, and maintain the reaction at 30°C for 1 hour. The system was cooled to -25°C, 40ml of titanium tetrachloride was slowly added dropwise, and the reaction was stirred for 0.5 hours. The treated inert carrier was added, and the reaction was stirred for 0.5 hours. Then 3ml of tetraethoxysilane was added and reacted for 1 hour. Slowly heat up to 85°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 wit...

Embodiment 2

[0047] (1) The synthesis of catalyst is the same as in Example 1. Only the amount of ethanol was changed from 6.4ml to 5.9ml.

[0048] (2) Ethylene polymerization is with embodiment 1. The catalyst composition and polymerization results are shown in Table 1.

Embodiment 3

[0050] (2) The synthesis of catalyst is the same as in Example 1. Only the amount of ethanol was changed from 6.4ml to 3.2ml.

[0051] (2) Ethylene polymerization is with embodiment 1. The catalyst composition and polymerization results are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

This invention relates to components and preparation method for a composite carrier catalyst for ethylene homopolymerization or copolymerization with other alpha-olefins. The catalyst comprises at least one Mg composite, at least one Ti compound, at least one organic alcohol compound, at least one Si compound, and at least one inorganic inert carrier. The Mg composite is prepared by dissolving Mg compound in organic epoxy compound and organic phosphorus compound system. The catalyst has such advantages as high catalytic activity, high hydrogen sensitivity and narrow particle size distribution of polymer. The catalyst is suitable for slurry polymerization of ethylene, combined polymerization process where catalyst with high activity and good particle morphology is needed, and gas phase fluidized bed process.

Description

technical field [0001] The present invention relates to a catalyst component for ethylene polymerization or copolymerization, a method for preparing the catalyst component and a catalyst for the catalyst component. technical background [0002] As we all know, the catalyst system containing Ti / Mg composite plays a dominant role in the industrial production of polyethylene, and the core of its research is nothing more than the polymerization activity of the catalyst, the particle shape and particle size distribution of the catalyst, the hydrogen adjustment sensitivity and Copolymerization performance and so on. In the ethylene polymerization process, in addition to requiring the catalyst to have high catalytic activity, it is very important to control the particle size and particle size distribution of the ethylene polymer produced by controlling the catalyst particles. With the application of the condensed state in the ethylene gas phase polymerization process, especially t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F10/02C08F4/645
Inventor 郭子方陈伟周俊领杨红旭王洪涛李瑞霞王瑞平徐世媛
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap