Solid catalyst component and catalyst for olefin polymerization

A solid catalyst and olefin polymerization technology, applied in the field of polyolefin catalysts, can solve problems such as increased investment modification, chain parking of pre-polymerization reactors, and agglomeration of pre-polymerization reactors

Active Publication Date: 2018-06-05
RENQIU LIHE TECH LTD
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for many existing polymerization units, adding a new pre-polymerization unit means adding new investment and relatively large modifications, and the pre-polymerization also has some limitations. The pre-polymerization reaction is carried out under low temperature conditions by controlling the catalyst and propylene The initial reaction to improve the activity of the catalyst and reduce the generation of fine powder during the polymerization reaction, which is also the difficulty of the process control of this technology
Due to the...

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid catalyst component and catalyst for olefin polymerization
  • Solid catalyst component and catalyst for olefin polymerization
  • Solid catalyst component and catalyst for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] In a four-neck flask equipped with a stirrer, install a reflux condenser and connect an accumulative gas meter to the reflux condenser. After the entire reaction device is fully replaced by nitrogen, add 70.8mL of absolute ethanol and 1.26g of iodine to the container. , to dissolve it. Add 6g of magnesium powder into it, heat up to the reflux temperature of ethanol under stirring conditions, and add 40mL of absolute ethanol and 5g of magnesium powder every 15 minutes from the reflux, a total of 5 times. About 1 to 2 hours after the completion of the fifth addition, the liquid viscosity began to rise sharply. At this time, add 259 mL of ethanol to the reaction system and continue the reaction until the reaction ends and no hydrogen is generated. The entire reaction time is about 6 hours. After filtration and drying, a diethoxymagnesium support was obtained.

[0083] Add 960 mL of toluene to the above-mentioned diethoxymagnesium carrier, start stirring and cool down to 0...

Embodiment 2

[0085] The preparation steps of the catalyst component are the same as in Example 1, except that 30 mL of absolute ethanol and 4 g of magnesium powder are added successively every 30 minutes from the reflux; 35 mL of absolute ethanol and 4.5 g of magnesium powder; 40 mL of absolute ethanol and magnesium powder 5g; absolute ethanol 45mL, magnesium powder 5.5g; absolute ethanol 50mL, magnesium powder 6g. And replace di-n-butyl phthalate with equimolar 9,9-bismethoxymethylfluorene.

Embodiment 3

[0087] The preparation steps of the catalyst component are the same as in Example 1, except that 30 mL of absolute ethanol and 4 g of magnesium powder are added successively every 20 minutes from the reflux; 35 mL of absolute ethanol and 4.5 g of magnesium powder; 40 mL of absolute ethanol and magnesium powder 5g; absolute ethanol 45mL, magnesium powder 5.5g; absolute ethanol 50mL, magnesium powder 6g; absolute ethanol 55mL, magnesium powder 6.5g; absolute ethanol 60mL, magnesium powder 7g.

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

The invention provides a solid catalyst component and a catalyst for olefin polymerization. The solid catalyst component contains Mg, Ti, halogen, and optionally electron donor; and the C value of particles of the solid catalyst component is more than or equal to 0.7, and is an average degree of sphericity. The solid catalyst component and the catalyst have optimized particle forms; and the polymer product has good mobility, high bulk density, sticky prevention and few fine powder and bulks, and has the characteristics of good stability of polymerization production and high unit volume capacity of a reaction kettle.

Description

technical field [0001] The invention relates to an olefin polymerization catalyst component, a catalyst and applications thereof, in particular to a solid catalyst component and a catalyst for olefin polymerization, and belongs to the field of polyolefin catalysts. Background technique [0002] The production process of polypropylene mainly includes five categories: solution method, slurry method, bulk method, gas phase method and bulk-gas phase combined process. The gas-phase polypropylene production process is favored because of its simple process flow, simple operation, good production flexibility, large single-line production capacity, high safety, and low equipment investment. Gas phase reactors can be divided into stirred bed and fluidized bed according to the state of motion of the solids. The range of movement of the solids in the stirred bed is small, in the form of fretting, and the packing density of the particles is high, so that a large amount of polyolefin pro...

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): C08F110/06C08F2/34C08F4/649
CPCC08F110/06C08F2/34C08F4/6494
Inventor 王志武李树行代金松马庆利李华姝张军伟王敬禹
Owner RENQIU LIHE TECH LTD
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