Polyarylether resin containing side carboxyl group, synthetic method and application of polyarylether resin in coating aspect

A synthesis method and technology of polyarylether, which is applied in the field of polyarylether resin, can solve the problems of reducing the service life of the coating, the coating is easy to be damaged, and is easy to soften, so as to achieve strong adhesion, improve heat resistance, and hot hardness high effect

Active Publication Date: 2022-07-29
ZHEJIANG PFLUON CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the molecular chains of thermoplastic resins are all linear or branched. There is no chemical bond between the molecular chains, and it is easy to soften when heated. The coating is easily damaged under the action of external force, which reduces the service life of the coating.

Method used

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  • Polyarylether resin containing side carboxyl group, synthetic method and application of polyarylether resin in coating aspect
  • Polyarylether resin containing side carboxyl group, synthetic method and application of polyarylether resin in coating aspect
  • Polyarylether resin containing side carboxyl group, synthetic method and application of polyarylether resin in coating aspect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of the polyarylene ether resin containing carboxyl side group, the concrete steps are as follows:

[0044] Step 1: In a 500ml four-port reactor equipped with a thermometer, an air inlet pipe, a reflux separator, and a stirrer with torque display, nitrogen was introduced to remove oxygen, and 72 grams of 4,4-dichlorodiphenylsulfone, 44.2 grams of Biphenol, 2.1 g methyl 2,5-dihydroxybenzoate, 28.6 g sodium carbonate, 4.2 g potassium carbonate, 3.8 g sodium dihydrogen phosphate, 1.1 g disodium hydrogen phosphate, 300 g sulfolane and 40 ml xylene , stir, raise the temperature to 110 ℃, when xylene and water azeotrope are evaporated, return xylene to the reactor through the reflux separator, and release the water for weighing. When the temperature reaches 150°C, keep the temperature constant for 30 minutes, the water in the separator will become clear, close the reflux valve to steam out all the xylene, and continue to heat to 215°C for 120 minut...

Embodiment 2

[0048]According to the same method as in Example 1, except that the weight of the input materials in the reactor was adjusted to add 72 grams of 4,4-dichlorodiphenyl sulfone, 59.4 grams of bisphenol S (instead of biphenol), 2.1 grams of 2,5-diphenylsulfone Methyl dihydroxybenzoate, 26.5 g of sodium carbonate, 6.9 g of potassium carbonate, 4.6 g of sodium dihydrogen phosphate, 1.4 g of sodium phosphate, 360 g of sulfolane and 40 ml of xylene; when the temperature reaches 220 ° C, the temperature is kept constant for 150 minutes. Finally, the polyarylene ether polymer EX-2 containing pendant carboxyl groups was obtained.

Embodiment 3

[0050] According to the same method as in Example 1, except that the weight of the input materials in the reactor was adjusted to add 72 grams of 4,4-dichlorodiphenylsulfone, 50 grams of bisphenol S, 8.4 grams of methyl 2,5-dihydroxybenzoate, 28.1 g of sodium carbonate, 4.8 g of potassium carbonate, 8 g of sodium dihydrogen phosphate, 3 g of disodium hydrogen phosphate, 1.4 g of sodium phosphate, 350 g of dimethyl sulfoxide and 40 ml of xylene; when the temperature reaches 183 ° C, the constant temperature is 120 minute. Finally, the polyarylene ether polymer EX-3 containing pendant carboxyl groups was obtained.

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Abstract

The invention relates to polyarylether resin, in particular to polyarylether resin containing side carboxyl groups, a synthesis method and application of the polyarylether resin in the aspect of coatings, and belongs to the technical field of high polymer material synthesis. The invention relates to a synthetic method of polyarylether resin containing side carboxyl groups, which comprises the following steps: by taking 4, 4 '-chlorodiphenyl sulfone, bisphenol and dihydroxy benzoate as polymeric monomers, carbonate as a salt-forming agent and phosphate as a stabilizer, carrying out nucleophilic polycondensation reaction in an aprotic polar solvent, and heating and hydrolyzing a formate side group on a molecular chain in an alkaline system. According to the polyarylether resin containing the carboxyl side group, the content of the carboxyl side group on a molecular chain is easy to control, and a coating film prepared from the resin has the characteristics of strong adhesive force with a base material and high thermal-state hardness.

Description

technical field [0001] The invention relates to a polyarylene ether resin, in particular to a polyarylene ether resin containing carboxyl side groups, a synthesis method and its application in coating, and belongs to the technical field of polymer material synthesis. Background technique [0002] Polyarylene ether polymers have excellent mechanical properties, chemical corrosion resistance, radiation resistance, hydrolysis resistance and other properties because of the rigid phenylene and flexible oxygen ether bonds or sulfide bonds in the molecular structure. After the introduction of structural units such as sulfone group and ketone group, the heat resistance is further improved due to the synergistic effect of ether bond and sulfone group and ketone group. [0003] Polyarylene ether resin-based coatings have good adhesion and excellent corrosion resistance, and have been widely used in kitchen utensils, household appliances, light industrial hardware, industrial molds, pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C09D181/06
CPCC08G75/23C09D181/06
Inventor 陆学庆王锡铭
Owner ZHEJIANG PFLUON CHEM
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