Catalyst compounding system for improving rigidity and toughness balance of base resin special for PPR pipes

A basic resin and catalyst technology, applied in the field of catalysis, can solve the problems of non-particle shape of polymer, large amount of catalyst, high production cost, etc., achieve good rigidity and heat distortion temperature, reduce attenuation, and avoid precipitation effects

Inactive Publication Date: 2020-04-14
徐州聚西廷新型材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the homogeneous polypropylene catalyst requires a large amount of catalyst to achieve high activity, the production cost is high, and the obtained polymer has no particle shape, it cannot be used in the widely used slurry method or gas phase polymerization process, an effective way to overcome the above problems It is to load the soluble polypropylene catalyst

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
  • Catalyst compounding system for improving rigidity and toughness balance of base resin special for PPR pipes
  • Catalyst compounding system for improving rigidity and toughness balance of base resin special for PPR pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The invention provides a catalyst compounding system for improving the rigidity-toughness balance of the special base resin for PPR pipes, including a main catalyst, a co-catalyst, an external electron donor and an internal electron donor, wherein the main catalyst is MgCl 2 / SBA-15 composite carrier supports titanium tetrachloride, the cocatalyst is triethylaluminum, the internal electron donor is diether, and the external electron donor is dimethyloxysilane;

[0049] MgCl 2 The preparation method of / SBA-15 composite carrier is as follows:

[0050] MgCl under nitrogen atmosphere 2 Dissolve in a certain amount of THF, heat to reflux, stir, until MgCl 2 After completely dissolving to form a colorless transparent liquid, add MgCl 2 Dopamine with a mass of 1 / 100, stirred for 12 hours, then added a certain amount of roasted SBA-15 carrier, then slowly lowered the temperature to 40°C, stirred for 6 hours, and waited for MgCl 2 After fully reacting with the SBA-15 carrie...

Embodiment 2

[0059] The invention provides a catalyst compounding system for improving the rigidity-toughness balance of the special base resin for PPR pipes, including a main catalyst, a co-catalyst, an external electron donor and an internal electron donor, wherein the main catalyst is MgCl 2 / SBA-15 composite carrier supports titanium tetrachloride, the cocatalyst is triethylaluminum, the internal electron donor is diether, and the external electron donor is dimethyloxysilane;

[0060] MgCl 2 The preparation method of / SBA-15 composite carrier is as follows:

[0061] MgCl under nitrogen atmosphere 2 Dissolve in a certain amount of THF, heat to reflux, stir, until MgCl 2 After completely dissolving to form a colorless transparent liquid, add MgCl 2 Dopamine with a mass of 1 / 100, stirred for 16 hours, then added a certain amount of roasted SBA-15 carrier, then slowly lowered the temperature to 40°C, stirred for 4 hours, and waited for MgCl 2 After fully reacting with the SBA-15 carrie...

Embodiment 3

[0070] The invention provides a catalyst compounding system for improving the rigidity-toughness balance of the special base resin for PPR pipes, including a main catalyst, a co-catalyst, an external electron donor and an internal electron donor, wherein the main catalyst is MgCl 2 / SBA-15 composite carrier supports titanium tetrachloride, the cocatalyst is triethylaluminum, the internal electron donor is diether, and the external electron donor is dimethyloxysilane;

[0071] MgCl 2 The preparation method of / SBA-15 composite carrier is as follows:

[0072] MgCl under nitrogen atmosphere 2 Dissolve in a certain amount of THF, heat to reflux, stir, until MgCl 2 After completely dissolving to form a colorless transparent liquid, add MgCl 2 Dopamine with a mass of 1 / 100, stirred for 14 hours, then added a certain amount of roasted SBA-15 carrier, then slowly lowered the temperature to 40°C, stirred for 2.5 hours, and waited for MgCl 2 After fully reacting with the SBA-15 carr...

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 discloses a catalyst compounding system for improving rigidity and toughness balance of a base resin special for PPR pipes. The catalyst compounding system comprises a main catalyst, a cocatalyst, an external electron donor and an internal electron donor; the main catalyst is MgCl2 / SBA-15 composite carrier loaded titanium tetrachloride, the cocatalyst is triethylaluminum, the internal electron donor is a diether, and the external electron donor is dimethyloxysilane; an adopted carrier is an MgCl2 / SBA-15 composite carrier; ordered mesoporous silicon SBA-15 serving as a model carrier has very excellent performance; SBA-15 silicon molecular sieve has highly ordered large mesopores; the specific surface area is large, the stability is good, mussel bionic dopamine is used for regulation and control in the preparation process of the MgCl2 / SBA-15 composite carrier, the water solubility and the loading property of titanium tetrachloride loaded on the MgCl2 / SBA-15 composite carrier can be improved, and meanwhile the catalytic activity can be enhanced.

Description

technical field [0001] The invention relates to the technical field of catalysis, in particular to a catalyst compounding system for improving the rigidity-toughness balance of a special base resin for PPR pipes. Background technique [0002] Mesoporous molecular sieve materials have the advantages of ordered pores, adjustable pore size, large specific surface area and pore volume, and are good catalysts and carrier materials. In recent years, heterogeneous catalysts such as solid acids and heteropolyacids prepared using mesoporous molecular sieve materials as templates not only have high catalytic activity for propylene polymerization, but also have fewer side reactions and simpler post-treatment. [0003] Because the homogeneous polypropylene catalyst requires a large amount of catalyst to achieve high activity, the production cost is high, and the obtained polymer has no particle shape, it cannot be used in the widely used slurry method or gas phase polymerization process...

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): C08F4/02C08F4/646C08F4/649C08F4/651C08F210/06C08F210/16C08F2/02
CPCC08F210/06C08F210/16C08F2500/15C08F2/02C08F4/022C08F4/025C08F4/6465C08F4/6494C08F4/651
Inventor 姚晓彤
Owner 徐州聚西廷新型材料科技有限公司
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