申请人:The Dow Chemical Company
公开号:US04709059A1
公开(公告)日:1987-11-24
Epoxy compounds for use as epoxy resins are prepared from relatively inexpensive and renewable resources via a selective halogenation process. Primary pendant hydroxyl groups on straight carbon chain compounds with oxygen atoms pendant to each carbon are selectively halogenated with, for example, carbon tetrachloride. A scavenger agent, triphenylphosphine and pyridine, is used to complex the residual portion of reacted halogenating agent. One additional step with the halogenated intermediate yields epoxy compounds which, when cured, yield epoxy resins.
利用选择性卤化工艺,从相对便宜和可再生的资源制备用作环氧树脂的环氧化合物。直链碳链化合物上的一次挂链羟基,在每个碳上悬挂氧原子,使用例如四氯化碳等卤化试剂进行选择性卤化。使用清除剂三苯基膦和吡啶,将反应的卤化试剂残留部分复合。通过卤化中间体的一个额外步骤,可以得到环氧化合物,当它们被固化时,可以产生环氧树脂。