Polyarylether containing triaryl s-triazine ring and phthalazone diphenyl structure and preparation method thereof
A technology of naphthalenone biphenyl and s-triazine, which is applied in the field of polymer science to achieve the effects of soluble film-forming properties, improved solubility, and excellent thermal stability
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[0039]Example 1:
[0040] In a dry 100mL three-necked flask with stirring, reflux condenser, water separator and air duct, add 5mmol of 4-(4-hydroxy-phenyl)-2H-naphthalene-1-one, 6mmol of potassium carbonate, 2-Phenyl-4,6-bis(4-fluorophenyl)-1,3,5-s-triazine (BFPT) 2mmol, 4,4'-dichlorodiphenylsulfone 3mmol, toluene 25mL, and sulfolane 2mL. Under the protection of nitrogen, after toluene azeotropically refluxed with water at 140°C for 3 hours, a large amount of water was evaporated and separated out. Then the temperature was raised to 150°C to distill toluene, and the temperature was gradually raised to 200°C to continue the reaction. After about 2h, the system became viscous, and 0.5 mL of sulfolane was added. After 6-8 hours of high-temperature polymerization, the reaction system becomes grayish brown, and the viscosity of the system increases significantly. After the reaction is over, add sulfolane to dilute the reaction system. Under high-speed stirring, the polymer solution is...
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