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    • 7. 发明公开
    • Process for the preparation of bisphenols
    • Verfahren zur Herstellung von Bisphenolen。
    • EP0440390A1
    • 1991-08-07
    • EP91300617.7
    • 1991-01-28
    • THE DOW CHEMICAL COMPANY
    • Walters, Marlin E.Richey, W. FrankTasset, Emmett L.
    • C07C39/15C07C37/18
    • C07C37/18C07C39/15
    • Triaromatic bisphenols are prepared by reacting a phenolic compound with at least one halo-compound selected from aromatic compounds having an (α,α-dihalo)alkyl or (α-halo)alk-1-enyl substituent with at least one β-hydrogen atom in said alkyl or alkenyl moiety, a trihalomethyl substituent or a dihalocyanomethyl substituent. Preferably, said halo-compound is 1,1-dichloroethylbenzene, 1-chlorostyrene, or mixtures thereof. The reaction may be conducted in the presence or absence of a solvent; an excess of the phenolic compound can serve as the solvent. The product is conveniently recovered by removing the by-product HCl, excess phenolic compound, excess solvent and cooling. Yields of greater than 90 percent of theoretical and a large proportion of para isomer can be obtained. Tris-(1,1,1-(4-hydroxyaromatic) toluenes are believed to be novel compounds.
    • 通过使酚类化合物与选自具有(α,α-二卤代)烷基或(α-卤代)烷-1-烯基取代基的芳族化合物的至少一种卤代化合物与至少一个β-氢原子反应来制备色氨酸双酚 在所述烷基或烯基部分中,有三卤甲基取代基或二卤代甲基取代基。 优选地,所述卤代化合物是1,1-二氯乙苯,1-氯苯乙烯或其混合物。 反应可以在溶剂存在或不存在下进行; 过量的酚类化合物可以用作溶剂。 通过除去副产物HCl,过量酚类化合物,过量溶剂和冷却,方便地回收产物。 可以获得大于理论值的90%以上的大部分对位异构体。 三 - (1,1,1-(4-羟基芳族)甲苯)被认为是新化合物。