Polyarylether polymer containing amino-benzene lateral group and method for synthesizing the same

A synthesis method and technology of aminophenyl hydroquinone, applied in the field of polymers, can solve the problems of reducing amino activity, affecting the reaction, large steric hindrance, etc., and achieving low water swelling rate, good film-forming property, and good flexibility. sexual effect

Inactive Publication Date: 2009-06-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the amino group in this type of polymer is located on the main chain, the steric hindra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw material that the present invention adopts---the synthetic method that contains aminophenyl hydroquinone monomer, can divide three-step reaction and carry out:

[0026] First step response:

[0027] Using 4-nitroaniline as the raw material, add the raw material, ethanol, and water into the container D, heat and stir mechanically, cool down to room temperature after dissolving, add hydrochloric acid, react for 0.5-1 hour, and dilute the sub- Sodium nitrate aqueous solution is dropped into the reaction system, the temperature is controlled at 0-10 ° C, the dropping time and the reaction time are 2-6 hours in total, and the intermediate product A is obtained, wherein the raw materials, concentrated hydrochloric acid, sodium nitrite, ethanol, and water mole The ratio is 1:4-6:1:5-100:5-100.

[0028] Second step reaction:

[0029] Add benzoquinone, sodium bicarbonate and water into container E, stir vigorously, control the temperature at 3-15°C, pour or drop the in...

Embodiment 2

[0034] 2.0122 grams (0.01mol) of 4-aminophenylhydroquinone prepared by the method of Example 1, 2.1820 grams (0.01mol) of 4,4'-difluorobenzophenone and 1.6585 grams of anhydrous potassium carbonate, 22.5 Put 1ml sulfolane and 20ml toluene into a 100ml three-necked flask equipped with a water device, blow nitrogen, heat up to toluene reflux and stir, reflux for 1.5 to 2 hours, remove toluene, raise the temperature to 180°C, and continue the reaction at about 180°C for 4~ After 5 hours, the polymerization solution was precipitated in water, pulverized, washed, and dried to obtain a brown powder of polyetheretherketone with a 4-aminophenyl structure. The glass transition temperature measured by DSC was 203°C. The molecular formula is as follows:

[0035]

[0036] Where n=100-220.

Embodiment 3

[0038] The method is the same as in Example 2, and the amount of the monomer is enlarged tenfold for reaction: 20.122 grams (0.1mol) of 4-aminophenylhydroquinone, 21.820 grams (0.1mol) of 4,4'-difluorobenzophenone and 16. Put 5852 grams of anhydrous potassium carbonate, 230ml sulfolane, and 60ml toluene into a 500ml three-necked flask equipped with a water dispenser, ventilate nitrogen, heat up to toluene reflux and stir, reflux for 3 to 4 hours, remove toluene, and heat up to 190°C. Continue to react at about 190°C for 7-9 hours, precipitate the polymerization solution in water, pulverize, wash, and dry to obtain a brown powder of polyetheretherketone with the same 4-aminophenyl structure.

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Abstract

The invention discloses polyarylether polymers containing aminophenyl lateral group and a synthesis method thereof, and belongs to the technical fields of high molecular materials and synthesis thereof. The polymers comprise polyether ether ketone containing 4-aminophenyl lateral group, the polyether ether ketone containing the aminophenyl lateral group, polyether ether naphtonone containing the aminophenyl lateral group, polyether ether sulfone containing the aminophenyl lateral group or sulfonated polyether ether ketone containing the aminophenyl lateral group; the polymers are prepared by polycondensation reaction of 4-aminophenyl hydroquinone monomer and difluoro monomer or dichloro monomer. In the synthesis method, a functional amino is introduced into a molecular structure of the polyarylether ketone (sulfone) to obtain a novel soluble polyarylether ketone (sulfone) containing the amino. The materials of the series have the advantages of high thermal stability, good film forming property, good reaction cross-linking property and good functionality. Moreover, the amino as a latent reaction cross-linking point can cause the materials of the series to have a plurality of advantages.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and their synthesis, in particular to polymers such as polyarylether ketone or polyarylether sulfone containing aminobenzene side groups synthesized from 4-aminophenyl-hydroquinone monomers . Background technique [0002] With the development of modern science and technology and the rise of high-tech industry, special engineering plastics are more and more valued and favored by governments and businessmen of various countries for their high performance-price ratio and high added value. Polyarylene ether polymers contain rigid, heat-resistant phenylene and flexible, heat-resistant ether bonds in their molecular structure, exhibiting high heat resistance and high physical and mechanical properties. Among them, ICI's PES, PEEK, PEK, and the later developed polyphenylene sulfide PPSS and polyketone sulfide PKS represented important application values. Among them, crystalline polyether mate...

Claims

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Application Information

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IPC IPC(8): C08G65/40
Inventor 姜振华郭梅梅刘佰军
Owner JILIN UNIV
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