Synthesis method of polyether-ether-ketone resin with sulfolane as solvent

Abstract

Synthesis of poly ether-ether-ketone resin as sulfolane as solvent is carried out by adding into 4,4,-difluoro-benzophenone and hydroquinone related to excessive dihydroxy-benzene 0.1~1%( or insufficient 0.1~1% ) successively, agitating, heating to 75~85 degrees C, adding into K2CO3 and Na2CO3 mixed salt, constant-temperature reacting at 230~260 degrees C for 1~3hrs, putting the reactant into cool water, cooling, freezing, crushing, filtering, boiling the solid product by non-ionic water repeatedly, removing solvent and by-product and drying the refined materials in oven to obtain final product. It can acquire poly ether-ether-ketone resin with two different hydroxyl terminal groups.

Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a method for preparing polyetheretherketone resin by using a polar solvent, especially sulfolane. Background technique

[0002] Polyaryletherketone polymers have a series of excellent comprehensive properties such as high temperature resistance, high strength, and radiation resistance. Its earliest commercialized species is the well-known polyether ether ketone (PEEK) resin that was first introduced to the market by the British ICI company in 1981. The patent of its preparation method clearly refers to the high-temperature solvent diphenyl sulfone. Because its polymer reaction temperature is above 300°C, other solvents cannot adapt. All of the patents on polyaryletherketone that were applied for later used this solvent. Among the relevant patents we have obtained in the past (such as 97101168.0 Synthesis of high-viscosity polyetheretherketone resin containing biphe...

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