METHOD FOR PREPARING A POLYETHER SULFONE COPOLYMER RESIN WITH AN EXCELLENT LIGHT-EMITTING PROPERTY BY INTRODUCING TWO KINDS OR MORE OF DIHYDROXY MONOMERS INCLUDING FLUORESCEIN TO THE MAIN CHAIN OF THE POLYMER RESIN

摘要

PURPOSE: A method for preparing a polyether sulfone copolymer resin is provided to prepare a polyethersulfone resin controlling a light-emitting wavelength for an absorption wavelength while maintaining heat resistance, processability, and transparency.;CONSTITUTION: A method for preparing a polyether sulfone copolymer resin comprises a step of polymerizing dihydroxydiphenylsulfone, dihalogenodiphenyl sulfone, and alkali metal salts or alkaline-earth metal salts. The molar ratio of fluorescein in the fluorescein and dihydroxydiphenylsulfon is 5~90 mole%. The fluorescein is represented by chemical formula 1. The alkali metal salts or alkaline-earth metal salts are potassium carbonate(K2CO3), sodium carbonate(Na2CO3), calcium carbonate(CaCO3), potassium hydroxide(KOH) or NaOH.;COPYRIGHT KIPO 2012