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

Glycol ester compound for preparing catalyst for olefinic polymerization

A compound and glycol ester technology, which is applied in the field of preparation of olefin polymerization catalysts, can solve the problems of low catalytic activity of catalysts, low isotacticity of polymers, and narrow molecular weight distribution of polymers.

Inactive Publication Date: 2005-02-16
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the catalysts for olefin polymerization prepared using the above-mentioned dibasic aromatic carboxylic acid ester compounds, 1,3-diether compounds containing two ether groups and dibasic aliphatic carboxylic acid ester compounds are There are certain defects in practical applications, such as the catalytic activity of catalysts using dibasic aromatic carboxylic acid ester compounds is low, and the molecular weight distribution of the obtained polymer is also narrow; the catalysts using 1,3-diether compounds Although the activity is high, and the sensitivity of the catalyst to hydrogen adjustment is also good, the molecular weight distribution of the obtained polymer is narrow, which is not conducive to the development of different grades of polymer; The activity is still low, and the resulting polymer is less isotactic without the use of an external electron donor component

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
  • Glycol ester compound for preparing catalyst for olefinic polymerization
  • Glycol ester compound for preparing catalyst for olefinic polymerization
  • Glycol ester compound for preparing catalyst for olefinic polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of 2,2'-dimethyl-1,5-pentanediol dibenzoate

[0036] (1) Preparation of 2,2'-diethylglutarate

[0037] 0.3 mol of ethanol, 40 ml of toluene and 0.4 ml of concentrated sulfuric acid were added to 0.1 mol of 2,2'-dimethylglutaric acid, stirred evenly and then heated to reflux. Use a water separator to remove water until the separated water reaches the theoretically calculated amount to stop the reaction. Neutralize with saturated sodium carbonate solution, extract with ethyl acetate, separate the upper layer solution, wash with saturated saline solution until neutral, and dry over anhydrous sodium sulfate. The solvent was removed and distilled under reduced pressure to obtain colorless liquid 2,2'-dimethylglutaric acid diethanol ester with a yield of 90%.

[0038] 2,2′-Diethylglutaric acid diethyl ester 1 H NMR (TMS, CDCl 3 , ppm, δ): 1.18 (6H, s, methyl H), 1.23~1.27 (6H, t, methyl H of ethanol), 1.7~1.8 (2H, t, methylene H), 2.25~2.29 ( 2H, t, methylene...

Embodiment 2

[0045] Preparation of 1,1'-Dibenzoyloxyethylcyclohexane

[0046] (1) Preparation of 1,1'-diethanoyl cyclohexane diacetate

[0047]Add 0.3 mol of ethanol, 40 ml of toluene and 0.4 ml of concentrated sulfuric acid to 0.1 mol of 1,1′-diacetate cyclohexane, stir and mix well, and then heat to reflux. Use a water separator to remove water until the separated water reaches the theoretically calculated amount to stop the reaction. Neutralize with saturated sodium carbonate solution, extract with ethyl acetate, separate the upper layer solution, wash with saturated saline solution until neutral, and dry over anhydrous sodium sulfate. The solvent was removed, and a colorless liquid was obtained by distillation under reduced pressure with a yield of 90%.

[0048] 1,1′-Diethanoyl diacetate cyclohexane 1 H NMR (TMS, CDCl 3 , ppm, δ): 1.12~1.13 (6H, t, methyl H), 1.3~1.4 (10H, m, methylene H of cyclohexane), 2.48 (4H, s, methylene H), 4.0 ~4.1 (4H, m, methylene H in ethanol).

[0049...

Embodiment 3

[0055] Preparation of 1,5-diphenyl-1,5-pentanediol dibenzoate

[0056] (1) Preparation of 1,5-diphenyl-1,5-pentanediol

[0057] Add 100ml of anhydrous tetrahydrofuran to 3g of lithium aluminum hydride, and stir vigorously under ice-bath cooling. Slowly add 0.05mol 1,5-diphenyl-1,5-pentanedione dropwise, then heat to reflux for 5h. After cooling, decompose excess lithium aluminum tetrahydrogen with water, stir the extraction solution with ethyl acetate, filter, and dry over anhydrous sodium sulfate. The solvent was removed, and the white solid 1,5-diphenyl-1,5-pentanediol was obtained by column chromatography, the yield was 85%, and the mp was 64-67°C. IR spectrum at 3400cm -1 There is a strong -OH absorption peak at 1700cm -1 There is no -CO- absorption peak on the left and right, which proves that the reduction reaction is complete.

[0058] (2) Preparation of 1,5-diphenyl-1,5-pentanediol dibenzoate

[0059] Add 30ml tetrahydrofuran and 0.09mol pyridine to 0.03mol 1,5-d...

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 refers to a kind of new diatomic alcohol ester, whose general equation is as the figure (1), its preparation method and its application to producing the catalyzer in the olefinic polymerization. The n should be no less than 3 and the R1 and R2 chosen from the straight chain or branched chain alkyl, cycloalkyl, aryl, alkaryl, aralkyl, olefin or condensed nucleus aryl of C1 to C20 don't matter, whether they are same or different. So do the R3 to R6 and R1 to R4 and they are one of the hydrogen, halogen, the straight chain or branched chain alkyl, cycloalkyl, aryl, alkaryl, aralkyl, olefin or condensed nucleus aryl of C1 to C20, but the R1, R2, R3 to R6 can't be hydrogen or halogen at the same time. And we should choose one of the R1 to R6 and R1 to R2 with one or several halogen atoms as the substitute of the carbon, hydrogen or both.

Description

technical field [0001] The present invention relates to a new glycol ester compound, the preparation method of the compound and the application of the compound in the preparation of olefin polymerization catalyst. technical background [0002] It is well known that solid titanium catalyst components based on magnesium, titanium, halogen and electron donors can be used for CH 2 = CHR Olefin polymerization, especially in the polymerization of α-olefins with 3 or more carbon atoms, polymers with higher yield and higher stereoregularity can be obtained, wherein the electron donor compound is in the catalyst component One of the essential ingredients, and with the development of internal electron donor compounds, polyolefin catalysts are constantly updated. At present, a large number of electron donor compounds have been disclosed, such as polycarboxylic acid, monocarboxylic acid ester or polycarboxylic acid ester, acid anhydride, ketone, monoether or polyether, alcohol, amine, ...

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): C07C69/616C08F4/00C08F10/00
Inventor 李昌秀王军高明智李现忠刘昆正杨菊秀邢凌燕李新荣
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