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

Olefin polymerization catalyst and preparation method thereof

A technology for olefin polymerization and catalyst, applied in the field of catalyst and its preparation, can solve the problem of high price and achieve the effect of high bulk density and good shape of polymer particles

Inactive Publication Date: 2018-10-02
PETROCHINA CO LTD
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these techniques all use expensive co-catalysts methylaluminoxane or organoboron compounds

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
  • Olefin polymerization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The invention provides a method for preparing an olefin polymerization catalyst. In the present invention, the phosphate-based clay is used as a support for the olefin polymerization catalyst, and the transition metal compound can be supported by treatment with aluminum alkyl.

[0028] The present invention provides a specific preparation step of an olefin polymerization catalyst including:

[0029] 1) Phosphate clay (titanium hydrogen phosphate or zirconium hydrogen phosphate) is pre-ground, sieved or spray-dried with water to prepare particles with an average particle size of 5-50 microns;

[0030] 2) Disperse phosphate clay in toluene solution under the protection of inert gas (nitrogen or argon);

[0031] 3) Under inert gas protection and stirring, add alkyl aluminum (trimethyl aluminum, triethyl aluminum, tri-n-butyl aluminum or tri-isobutyl aluminum) to the mixed system obtained in step 2 for treatment (the added alkane The molar ratio of aluminum base to phosphate clay ...

Embodiment 1

[0039] Under the protection of nitrogen, accurately weigh 5g of titanium hydrogen phosphate (average particle size of 8 microns) and transfer it to a glass reactor fully replaced by nitrogen, and add 25ml of purified toluene with dewatering. After stirring for uniform dispersion, 20 ml of trimethylaluminum solution (2M toluene solution) was added, and stirred at 30°C for 1 hour.

[0040] Accurately weigh 50 mg of bis(butylcyclopentadienyl) zirconium dichloride under the protection of nitrogen and transfer it to a glass reactor that has been fully replaced by nitrogen, and add 15 ml of toluene purified by dewatering. Stir at 30°C to dissolve. 1ml of methylaluminoxane solution (10wt% toluene solution) was added, and stirring was continued for 0.5 hours.

[0041] The above two reaction systems were mixed under the protection of nitrogen and stirred at 40°C for 2 hours. After the reaction, let it stand still, filter the liquid after layering, wash twice with 30ml dewatered and refine...

Embodiment 2

[0044] Under the protection of nitrogen, accurately weigh 5g of titanium hydrogen phosphate (average particle size of 8 microns) and transfer it to a glass reactor fully replaced by nitrogen, and add 25ml of purified toluene with dewatering. After stirring to make the dispersion uniform, 25 ml of trimethylaluminum solution (2M toluene solution) was added and stirred at 30°C for 1 hour.

[0045] Accurately weigh 100 mg of rac-dimethyl bis(2-methyl-4,5-benzoindenyl)silyl zirconium dichloride under the protection of nitrogen and transfer it to a glass reactor that has been fully replaced by nitrogen. 15ml of toluene refined with water. Stir at 30°C to dissolve. 1ml of methylaluminoxane solution (10wt% toluene solution) was added, and stirring was continued for 0.5 hours.

[0046] The above two reaction systems were mixed under the protection of nitrogen and stirred at 40°C for 2 hours. After the reaction, let it stand still, filter the liquid after layering, wash twice with 30ml de...

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
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides an olefin polymerization catalyst. A carrier is phosphate clay; a cocatalyst used in loading is an aluminum alkyl; a loaded compound is a transition metal compound; and the olefin polymerization catalyst has an average particle diameter of 5 to 50 microns. The invention also provides a preparation method of the olefin polymerization catalyst, the catalyst can be applied in the field of olefin polymerization, and obtained polymer particles have good morphology.

Description

Technical field [0001] The invention relates to a catalyst for olefin polymerization and a preparation method thereof. Background technique [0002] Homogeneous metallocene catalysts or non-transition metal catalysts have unique properties different from Ziegler-Natta catalysts in catalyzing olefin polymerization. For example, metallocene polyolefin products produced based on metallocene catalysts have been industrialized, and the products have the advantages of high performance and high added value. With the pursuit of high-end polyolefin products by the society, the market demand for metallocene polyolefin products continues increase. Non-transition metal catalysts can develop new polyolefin resins that cannot be obtained with traditional catalysts such as hyperbranched polyethylene, polyolefin elastomers, polyolefin block copolymers, and olefin-polar monomer copolymers. However, in the application of homogeneous catalysts, the morphology of the obtained polymer is difficult ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/6592
CPCC08F10/00C08F110/02C08F110/06C08F2420/01C08F2420/02C08F2420/03C08F2420/04C08F4/02C08F4/65925C08F4/65927C08F4/6592C08F2500/18
Inventor 袁苑义建军王莉孙天旭许蔷王科峰李红明李荣波王永刚张明革
Owner PETROCHINA CO LTD
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