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    • 3. 发明授权
    • Process for preparing of aromatic oligomers
    • 芳族低聚物的制备方法
    • US07049389B2
    • 2006-05-23
    • US10496139
    • 2002-12-26
    • Toshihide SenzakiTakahiro ImamuraKazuyoshi HoribeTomoaki YoshidaAtsuhiko KatayamaYasuo WadaKatsuhide Noguchi
    • Toshihide SenzakiTakahiro ImamuraKazuyoshi HoribeTomoaki YoshidaAtsuhiko KatayamaYasuo WadaKatsuhide Noguchi
    • C08G10/02C07C7/10
    • C08G10/02
    • This invention relates to a process for preparing high-purity aromatic oligomers by effectively separating an organic layer containing aromatic oligomers or the reaction products of a polycyclic aromatic compound with formaldehyde from an aqueous layer containing an acid catalyst in a simplified manner, hitherto regarded difficult to accomplish, and obtaining high-purity aromatic oligomers from the organic layer containing a reduced amount of impurities. In separating the aqueous layer containing the acid catalyst and the organic layer containing the oligomers from the reaction mixture formed by the condensation of a polycyclic aromatic compound and formaldehyde, the emulsion phase is broken by adding a nonionic or cationic surfactant in an effective amount and an alkali in an amount sufficient to neutralize 1–70% of the acid in the acid catalyst, the organic and aqueous layers are separated and the aromatic oligomers are recovered from the organic layer.
    • 本发明涉及一种制备高纯度芳族低聚物的方法,该方法通过以简单的方式从含有酸催化剂的水层中有效地分离含有芳族低聚物的有机层或多环芳族化合物与甲醛的反应产物,至今被认为难以 从含有少量杂质的有机层中获得高纯度芳族低聚物。 在将含有酸催化剂的水层和含有低聚物的有机层从由多环芳族化合物和甲醛缩合形成的反应混合物中分离时,通过加入有效量的非离子或阳离子表面活性剂和 碱的量足以中和酸催化剂中的1-70%的酸,分离有机层和水层,并从有机层中回收芳族低聚物。