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

Olefin polymerization catalyst system and application thereof

A technology of olefin polymerization and catalyst, which is applied in the field of olefin polymerization, can solve problems such as difficulties, and achieve the effects of simple polymerization method, improved hydrogen adjustment sensitivity, and high polymerization activity

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
View PDF15 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the general situation, it is difficult to effectively adjust the overall performance of the catalyst through the external electron donor or the composition of the external electron donor compound in the prior art, that is, to obtain a catalyst with superior polymerization activity and hydrogen modulation sensitivity.

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 system and application thereof
  • Olefin polymerization catalyst system and application thereof
  • Olefin polymerization catalyst system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0087] According to a specific embodiment of the present invention, the specific preparation method of the magnesium halide alcoholate carrier includes: mixing anhydrous magnesium halide and lower carbon alcohol, and heating up to react to form a magnesium halide alcoholate melt, and the reaction temperature is 90-140°C, after high-shearing in the dispersion medium, put it into the cooled inert medium to form spherical magnesium halide alcoholate particles, and obtain spherical carriers after washing and drying. High shear can be obtained by conventional methods, such as high-speed stirring method (such as CN1330086), spray method (such as US6020279), and high-gravity rotating bed (such as CN1580136A) and emulsifier method (CN1463990A). The dispersant system uses hydrocarbon inert solvents, such as kerosene, white oil, silicone oil, paraffin oil, vaseline oil, etc. The cooling medium is selected from pentane, hexane, heptane, petroleum ether, raffinate and the like.

[0088] ...

preparation example

[0101] In a 300ml stirred glass reaction bottle fully replaced by high-purity nitrogen, add 100ml of titanium tetrachloride, cool to -20°C, add spherical magnesium chloride alcoholate (see Chinese patent CN1330086A for the preparation method), and slowly heat up to 110 ℃, add 2.5mol of glycol ester compound and 3.9mmol of carboxylate compound in the process of heating up, after keeping the temperature at 110℃ for 0.5h, filter off the liquid, add titanium tetrachloride to treat twice, then wash five times with hexane, The titanium-containing solid catalyst component A was obtained after vacuum drying.

Embodiment

[0103] According to the components in Examples 1-14 and Comparative Examples 1-4 in Table 1, and referring to the following conditions, the polymerization reaction of propylene was carried out.

[0104] In a 5-liter autoclave, nitrogen flow was used to purging at 70°C for 1 hour, then the polymerization vessel was replaced 3 times with gas-phase propylene, and 5ml of alkylaluminum compound (the concentration of triethylaluminum was 0.5 mmol / ml), 1ml of the hexane solution of the external electron donor (the concentration of the external electron donor is 0.1mmol / ml), 10ml of anhydrous hexane and 8-12mg of titanium-containing solid catalyst component A. Close the autoclave, introduce a certain volume of hydrogen (at 25°C, atmospheric pressure) (L) and 1.0-1.2Kg of liquid propylene; quickly raise the internal temperature to 70°C while stirring. After the polymerization reaction at 70°C for 1 hour, the stirring was stopped to remove unpolymerized propylene monomer, and the polyme...

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 relates to the field of olefin polymerization, and discloses a catalyst system. The catalyst system comprises a titanium containing solid catalyst component, an aluminium alkyl compound and an external electron donor compound; the titanium containing solid catalyst component comprises at least two kinds of internal electron donor compounds, which contain a diol ester type compound and a carboxylate compound; and the external electron donor compound is an ether ester compound. The invention also provides an application of the catalyst to the olefin polymerization. The solid catalyst component which comprises the diol ester type compound and the carboxylate compound as internal electron donors is used for carrying out the olefin polymerization, and the ether ester compound is used for the olefin polymerization, so that high polymerization activity of the catalyst is maintained, and at the same time hydrogen response of the catalyst is improved.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular, the invention relates to a catalyst system and its application in olefin polymerization. Background technique [0002] As we all know, 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 alkyl aluminum compounds) and (3) an external electron donor compound added during polymerization. [0003] The use of one or several external electron donor compounds to control the stereoregularity and morphology of polymers during polymerization is well known to those skilled in the art. In addition to affecting the stereoregularity of the polymer, the external electron donor often affects other aspects of the performance of the catalyst to varying degrees. Although many compounds are known to act as external electron donors, the use of different externa...

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): C08F10/00C08F4/649C08F4/646C08F110/06
Inventor 张天一夏先知刘月祥张志会段瑞林万真马长友
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