Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Solid catalyst component for olefin polymerization, preparation method of solid catalyst component, olefin polymerization catalyst and olefin polymerization method

A solid catalyst and olefin polymerization technology, which is applied in the field of solid catalyst components for olefin polymerization and its preparation, olefin polymerization catalysts and olefin polymerization, can solve the problems of high polymer fine powder content, broken catalyst, and low commercial value, and achieve Less broken particles and good regularity

Pending Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the preparation method of the prepolymerized catalyst disclosed in the above patent documents, the prepolymerized catalyst prepared by using α-olefins such as propylene as the prepolymerized monomer has a phenomenon of fragmentation. With the prolongation of the storage time, the activity of the catalyst decays quickly, and the commercial value is low. ; and when ethylene is used as a pre-polymerized monomer, it will cause the catalyst to be broken, and the content of polymer fine powder is also relatively high during subsequent olefin polymerization.

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 for olefin polymerization, preparation method of solid catalyst component, olefin polymerization catalyst and olefin polymerization method
  • Solid catalyst component for olefin polymerization, preparation method of solid catalyst component, olefin polymerization catalyst and olefin polymerization method
  • Solid catalyst component for olefin polymerization, preparation method of solid catalyst component, olefin polymerization catalyst and olefin polymerization method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] According to a first aspect of the present invention, the present invention provides a method for preparing a solid catalyst component for olefin polymerization, the preparation method comprising the following steps:

[0028] (1) In the presence of an inert solvent, the catalyst component A, aluminum alkyl and an external electron donor are subjected to a contact reaction; the catalyst component A contains titanium, magnesium, chlorine and an internal electron donor; the internal electron donor Body comprises glycol esters shown in formula (1):

[0029]

[0030] In formula (1), R 1 -R 6 each independently selected from hydrogen, C 1 -C 10 straight-chain or branched-chain alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C 7 -C 10 Alkaryl or C 7 -C 10 an aralkyl group; and R 1 -R 6 Two or more groups in are optionally bonded to each other to form one or several fused ring structures;

[0031] R 7 and R 8 each independently selected from C 1 -C 10 straight...

Embodiment 1

[0103] (1) Preparation of Catalyst Component A

[0104] Add 1.2L of titanium tetrachloride to a stirred 3L glass reaction bottle and cool down to -20°C, then add 100g of magnesium chloride alcoholate spherical carrier [Mg(C 2 h 5 Oh) 2.6 ] (average particle size D50=45μm, the same below), reacted at -20°C for 0.5 hours, then slowly raised the temperature to 120°C, added 15g of 2,4-pentanediol dibenzoate during the heating process, and then heated at 120°C React at low temperature for 0.5 hours, filter off the liquid, add 1L of titanium tetrachloride, and maintain at 120°C for 2 hours, then filter off the liquid to obtain a solid product, wash the obtained solid product with hexane for 5 times, and finally dry it in vacuum to obtain Catalyst component A (average particle size D50 = 40 μm), denoted as A1.

[0105] (2) Preparation of solid catalyst component

[0106] In a 5L autoclave, add 1.1L hexane, 15mmol triethylaluminum, 0.3mmol cyclohexylmethyldimethoxysilane and 10.9g...

Embodiment 2

[0110] (1) Preparation of Catalyst Component A

[0111] Add 1.2L of titanium tetrachloride to a stirred 3L glass reaction bottle and cool down to -20°C, then add 100g of magnesium chloride alcoholate spherical carrier [Mg(C 2 h 5 Oh) 2.6 ], react at -20°C for 0.5 hours, then slowly raise the temperature to 120°C, add 15g of 2,4-pentanediol dibenzoate and 15g of 2-isopropyl-2-isoamyl-1 , 3-dimethoxypropane, then reacted at 120°C for 0.5 hours, filtered off the liquid, added 1L of titanium tetrachloride, maintained at 120°C for 1 hour, filtered off the liquid to obtain a solid product, and obtained the solid The product was washed 5 times with hexane, and finally dried under vacuum at 45° C. to obtain catalyst component A (average particle size D50 = 41 μm), denoted as A2.

[0112] (2) Preparation of solid catalyst component

[0113] In a 5L autoclave, add 1.1L hexane, 15mmol triethylaluminum, 0.3mmol cyclohexylmethyldimethoxysilane and 10.8g catalyst component A2, react at ...

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

PropertyMeasurementUnit
Average particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of olefin polymerization catalysts, and discloses a solid catalyst component for olefin polymerization, a preparation method of the solid catalyst component, an olefin polymerization catalyst and an olefin polymerization method. The preparation method comprises the following steps of: (1) in the presence of an inert solvent, carrying out contact reaction on a catalyst component A, aluminum alkyl and an external electron donor, the catalyst component A containing titanium, magnesium, chlorine and an internal electron donor, and the internal electron donor comprising glycol ester as shown in a formula (1); (2) adding alpha-olefin to carry out a first polymerization reaction; and (3) adding ethylene to carry out a second polymerization reaction. The mass ratio of alpha-olefin to ethylene to the catalyst component A is (0.04-10): (0.04-10): 1. The solid catalyst component prepared by the method has the advantages of good regularity and few broken particles, and the olefin polymer obtained by catalyzing olefin polymerization by the catalyst containing the solid catalyst component has low fine powder content.

Description

technical field [0001] The invention relates to the field of olefin polymerization catalysts, in particular to a solid catalyst component for olefin polymerization and a preparation method thereof, an olefin polymerization catalyst and a method for olefin polymerization. Background technique [0002] Ziegler-Natta polyolefin catalysts are solid particle catalysts based on magnesium, titanium, halogen and electron donors. The particle shape of the catalyst plays an important role in the particle shape of the polymer during the polymerization process. At present, the solid catalyst components contained in Ziegler-Natta polyolefin catalysts are divided into two categories, one is the supported catalyst component, that is, the active component containing titanium and the optional internal electron donor are supported on a certain shaped carrier. The main raw materials used for the carrier are generally chloride, silica gel, etc., and the shape is mostly spherical; the other type...

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): C08F110/06C08F4/649
CPCC08F110/06C08F4/6494Y02P20/52
Inventor 刘月祥夏先知赵瑾谭扬高富堂陈龙任春红张天一李威莅凌永泰刘涛
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com