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

Catalyst system for olefin polymerization reaction

An olefin polymerization and catalyst technology, applied in the field of olefin polymerization catalyst systems, can solve problems such as different polymer properties

Active Publication Date: 2015-05-13
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many compounds are known to act as external electron donors, the use of different external electron donor compounds for a particular catalyst may result in different polymer properties

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 system for olefin polymerization reaction
  • Catalyst system for olefin polymerization reaction
  • Catalyst system for olefin polymerization reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1A, preparation of titanium-containing spherical solid catalyst component A

[0048] Add 100ml of titanium tetrachloride to a 300ml stirring glass reaction bottle fully replaced by high-purity nitrogen, cool to -20°C, add spherical magnesium chloride alcoholate (see Chinese patent CN1330086A for the preparation method), and slowly raise the temperature in stages To 110°C, add 3.9mmol of diisobutyl phthalate during the heating process, and after keeping the temperature at 110°C for 0.5h, filter off the liquid, add titanium tetrachloride to treat twice, then wash with hexane five times, vacuum After drying, titanium-containing solid catalyst component A (main catalyst) was obtained.

[0049] 1B, propylene polymerization

[0050] In a 5-liter autoclave, use a nitrogen stream to purge at 70°C for 1 hour, then replace the polymerization vessel 3 times with gas-phase propylene, and introduce 5 ml of a hexane solution of triethylaluminum (triethylaluminum) under nitrogen prot...

Embodiment 2～27

[0052] The solid catalyst prepared in 1A of Example 1 was polymerized according to the method of propylene polymerization in 1B of Example 1, with different amounts of hydrogenation and different additions of external electron donors. The composite external electron donor added during polymerization is a hexane solution of alkene-based trihydrocarbyloxysilane and hydrocarbyl dihydrocarbyloxysilane. The polymerization and test results are shown in Table 1 and Table 2.

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 present invention relates to a catalyst system for an olefin polymerization reaction. According to the present invention, a titanium-containing solid granular catalyst component adopting a carboxylic ester compound as an internal electron donor is added with the compounding product of alkenyl trialkoxy silane and dialkyl dialkoxy silane during olefin polymerization, wherein the compounding product is adopted as an external electron donor, such that the melt index is increased in the case of essential unchanging of the isotactic index of the obtained polymer, or the polymer with the high isotactic index can be obtained in the case of essential unchanging of the melt index; and the relative molecular weight and the molecular weight distribution of the obtained polymer are close to the relative molecular weight and the molecular weight distribution of the comparative polymer.

Description

technical field [0001] The present invention relates to a catalyst system for the polymerization of olefins, more particularly to a spherical catalyst component containing a titanium compound, the internal electron donor being a carboxylate, a co-catalyst and a composite external electron donor compound olefin Olefin polymerization catalyst system composed of trihydrocarbyloxysilane and dihydrocarbyl dihydrocarbyloxysilane. technical background [0002] Catalysts comprising titanium compounds and electron donor compounds supported on active magnesium halides are well known in the art. The catalyst system used in the homopolymerization or copolymerization of α-olefins generally consists of three parts, which are: (1) main catalyst (solid catalyst), (2) cocatalyst, usually an alkyl aluminum compound and (3 ) external electron donor compound added during polymerization. [0003] The transition metal in the main catalyst is usually a compound of titanium, zirconium or vanadium...

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): C08F10/00C08F4/649C08F4/646
Inventor 张天一夏先知万真刘月祥马长友
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