BIFUNCTIONAL BIPHENYL AND PROCESS FOR PRODUCING BIFUNCTIONAL PHENYLENE ETHER OLIGOMER COMPOUND USING THE SAME
申请人:——
公开号:US20030229256A1
公开(公告)日:2003-12-11
A process for producing 2,2′,3,3′,5,5′-hexamethyl-[1,1′-biphenyl]-4,4′-diol, which process comprises,
while setting a pH of a reaction liquid containing an alkaline aqueous solution, a surfactant, a copper catalyst and 2,3,6-trimethylphenol during a reaction in the range of from 8 to 14 and controlling the variation range of the pH of the reaction liquid within ±1,
oxidatively coupling the 2,3,6-trimethylphenol with an oxygen-containing gas, and
a process for producing a bifunctional phenylene ether oligomer compound having a controlled average molecular weight, comprising carrying out oxidation polymerization under a proper oxygen concentration.
一种制备2,2′,3,3′,5,5′-六甲基-[1,1′-联苯]-4,4′-二酚的方法,包括在反应液中设置碱性水溶液、表面活性剂、铜催化剂和2,3,6-三甲基苯酚,在反应pH范围为8至14之间,并控制反应液pH变化范围在±1内,将2,3,6-三甲基苯酚与含氧气体氧化偶联,并在适当的氧气浓度下进行氧化聚合,以制备具有受控平均分子量的双官能团苯基醚寡聚体化合物的方法。