METHOXYDIPHENYLSULFONE ETHER-CONTAINING POLYETHERSULFONE RESIN, SYNTHESIS METHOD FOR SAME, AND APPLICATIONS THEREOF

WIPO Patent Application WO/2018/113495

A1

Disclosed are a methoxydiphenylsulfone ether-containing polyethersulfone resin, a synthesis method for same, and applications of same, the structural formula thereof being: [see drawing], where R1, R2, and R3 respectively and independently represent H and –OCH3, two of R1, R2, and R3 are simultaneously H, while the remaining one is –OCH3, and n = 2-2000. The synthesis method has component A: 4,4'-dihydroxydiphenyl sulfone, component B: 4,4-dichlorodiphenyl sulfone, and component C: a methoxydiphenylsulfone metal phenoxide as reacting monomers, has an alkali metal carbonate as a salt-forming agent, and employs a solution polymerization technique for polymerization. The present invention introduces the methoxydiphenylsulfone metal phenoxide monomer as a capping agent into a PES polymer; the methoxydiphenylsulfone ether-containing polyethersulfone resin so prepared has a chlorine content less than 900 ppm, transmittance greater than 83%, haze less than 3%, and yellowness index less than 15, has significantly improved transparency and color levels, and at the same time, has the characteristic of resistance to high temperature over an extended period of time without discoloration.

DAI JINGQI (CN)
GAO HONGJUN (CN)
CHEN RUIBIN (CN)
SUN XUEKE (CN)
CAO MIN (CN)
JIANG SUJUN (CN)
ZENG XIANGBIN (CN)

PCT/CN2017/113749

June 28, 2018

November 30, 2017

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KINGFA SCIENCE & TECHNOLOGY CO (CN)

C08G75/23; C08L81/06

WO2013167252A1

2013-11-14

CN102365312A	2012-02-29
CN102911328A	2013-02-06
CN105330838A	2016-02-17

GUANGZHOU WISON I.P. LAW FIRM (CN)

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