申请人:SABIC GLOBAL TECHNOLOGIES B.V.
公开号:US10259762B2
公开(公告)日:2019-04-16
A phenylene ether oligomer is prepared by a process that includes partially converting 2,6-dimethylphenol to 3,3′,5,5′-tetramethyl-4,4′-dihydroxybiphenyl and/or 3,3′,5,5′-tetramethyldiphenoquinone, converting the residual 2,6 dimethylphenol to poly(2,6-dimethyl-1,4-phenylene ether) and any 3,3′,5,5′-tetramethyl-4,4′-dihydroxybiphenyl to 3,3′,5,5′-tetramethyldiphenoquinone, and reacting the poly(2,6-dimethyl-1,4-phenylene ether) and 3,3′,5,5′-tetramethyldiphenoquinone to form the phenylene ether oligomer. The preparation can be conducted without isolation of intermediates.
苯醚低聚物的制备工艺包括将 2,6-二甲基苯酚部分转化为 3,3′,5,5′-四甲基-4,4′-二羟基联苯和/或 3,3′,5,5′-四甲基二苯醌,将残余的 2,6-二甲基苯酚转化为聚 2、6-二甲基-1,4-苯醚)和任何 3,3′,5,5′-四甲基-4,4′-二羟基联苯转化为 3,3′,5,5′-四甲基二苯醌、将聚(2,6-二甲基-1,4-亚苯基醚)和 3,3′,5,5′-四甲基二苯醌反应生成亚苯基醚低聚物。制备过程无需分离中间产物。