Unlock instant, AI-driven research and patent intelligence for your innovation.

Thioether-containing self-flame-retardant polyester and preparation method thereof

A technology of flame-retardant polyester and flame-retardant polyester, which is applied in the field of sulfide-containing self-flame-retardant polyester and its preparation, can solve the problems of molecular chain forming processing, low glass transition temperature, poor processability, etc., and achieves good stability , high purity, the effect of improving flame retardant properties

Active Publication Date: 2012-07-04
SICHUAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aromatic polyesters have excellent thermal properties (high glass transition temperature and melting point), mechanical strength, etc., but they are often difficult to shape and process by traditional processing methods due to the high rigidity of molecular chains (Bhowmik, P.K.; Han, H.Macromolecules , 1993, 26, 5287.), while polyphenylene sulfide has excellent processability and corrosion resistance, but its glass transition temperature is low (85°C) (Edited by Yang Jie, Polyphenylene sulfide resin and its application, Chemical Industry Press, 2006), in order to integrate the advantages of polyphenylene sulfide and aromatic polyester, improve the glass transition temperature of polyarylene sulfide, and improve the disadvantages of poor processability and flammability of aromatic polyester, While maintaining its excellent thermal properties, we introduced the thioether bond of the soft segment into the main chain of the aromatic polyester molecule, and designed and prepared polymers such as thioether self-flame retardant polyester

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
  • Thioether-containing self-flame-retardant polyester and preparation method thereof
  • Thioether-containing self-flame-retardant polyester and preparation method thereof
  • Thioether-containing self-flame-retardant polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, poly 4, the preparation of 4'-diphenylsulfide dicarboxylic acid 2,2-bis(3,5-dimethyl-4-hydroxyphenyl) propane ester---TDC-TMBPA

[0039] With 2,2-bis(3,5-dimethyl-4-hydroxyphenyl) propane 28.4g, hexadecyltrimethylammonium chloride 10g, potassium carbonate 13.8g, add successively to the tank containing 200g water In the three-necked flask, stir and dissolve at room temperature; then dissolve 20 g of 4,4'-diphenylsulfide diformyl chloride into a beaker containing 300 parts of dichloromethane, and add it dropwise to the above-mentioned three-necked flask, Stir the reaction at 35°C for 10 hours to obtain high molecular weight sulfide-containing polyester poly 4,4'-diphenylsulfide dicarboxylic acid 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane Esters---TDC-TMBPA, washed with water and ethanol, dried at 50°C for 8 hours, pulverized, extracted and purified with deionized water and acetone respectively, dried at 100°C for 5 hours to obtain 47.4g of pure resin, the ...

Embodiment 2

[0040] Embodiment 2, poly 4, the preparation of 4'-diphenylsulfide dicarboxylic acid 1,1-bis(4-hydroxyphenyl)-1-phenylethane ester---TDC-PhBPA

[0041]29g of 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 5g of sodium dodecylsulfonate, and 20g of potassium bicarbonate were successively added to a three-necked flask with 100g of water, and Stir to dissolve at room temperature; then dissolve 40 g of 4,4'-diphenylsulfide diformyl chloride into a beaker containing 150 parts of chloroform, and dropwise add it to a three-necked flask, and stir and react at 25°C for 5 hours to obtain high Molecular weight thioether-containing polyester poly 4,4'-diphenylsulfide dicarboxylic acid 1,1-bis(4-hydroxyphenyl)-1-phenylethane ester---TDC-PhBPA, after water, Wash with ethanol, dry at 100°C for 5h, pulverize, extract and purify with deionized water and acetone respectively, and dry at 200°C for 1h to obtain 50.6g of pure resin with a yield of about 96%; use concentrated sulfuric acid as a solvent to...

Embodiment 3

[0042] Embodiment 3, the preparation of poly 4,4'-diphenylsulfide dicarboxylic acid 2,2-bis(3,5-dimethyl-4-hydroxyphenyl) propane ester---TDC-TMBPA

[0043] 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane 28.5g, hexadecyltrimethylammonium bromide 0.1g, sodium hydroxide 8g, were added in turn to the In a three-necked flask, stir and dissolve at room temperature; then dissolve 30 g of 4,4'-diphenylsulfide diformyl chloride into a beaker containing 50 parts of chlorobenzene, and add it dropwise to the above-mentioned three-necked flask, Stir and react at 5°C for 3 hours to obtain high molecular weight thioether-containing polyester poly 4,4'-diphenylsulfide dicarboxylic acid 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane Esters---TDC-TMBPA, washed with water and ethanol, dried at 200°C for 2 hours, pulverized, extracted and purified with deionized water and acetone respectively, dried at 80°C for 20 hours to obtain 46.3g of pure resin, the yield is about 93% ; Use chloroform as a sol...

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 thioether-containing self-flame-retardant polyester and a preparation method thereof. The preparation method is characterized by comprising the following steps: successively adding 28.4-29 parts of diphenol monomer, 0.1-10 parts of catalyst and 8-20 parts of alkali into a three-necked flask filled with 30-200 parts of water, and stirring and dissolving at room temperature;dissolving 20-40 parts of 4,4'-diphenyl thioether dimethyl chloride into a beaker filled with 50-300 parts of organic solvent, and dropwise adding the mixture into the three-necked flask, and stirring and reacting for 3-10 hours at the temperature of 5-35 DEG C so as to obtain high-molecular-weight thioether-containing polyester resin; and washing the polymer with water and ethanol, drying for 2-8 hours at the temperature of 50-200 DEG C, smashing, extracting and purifying with deionized water and acetone respectively, drying for 1-20 hours at the temperature of 80-200 DEG C so as to obtain the pure thioether-containing self-flame-retardant polyester resin.

Description

technical field [0001] The invention relates to a sulfide-containing self-flame-retardant polyester and a preparation method thereof, belonging to the field of polymer synthesis. Background technique [0002] Aromatic polyesters have excellent thermal properties (high glass transition temperature and melting point), mechanical strength, etc., but they are often difficult to shape and process by traditional processing methods due to the high rigidity of molecular chains (Bhowmik, P.K.; Han, H.Macromolecules , 1993, 26, 5287.), while polyphenylene sulfide has excellent processability and corrosion resistance, but its glass transition temperature is low (85°C) (Edited by Yang Jie, Polyphenylene sulfide resin and its application, Chemical Industry Press, 2006), in order to integrate the advantages of polyphenylene sulfide and aromatic polyester, improve the glass transition temperature of polyarylene sulfide, and improve the disadvantages of poor processability and flammability ...

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): C08G63/688
Inventor 张刚杨杰李东升王孝军龙盛如
Owner SICHUAN UNIV