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    • 4. 发明授权
    • Producing method for trimethylolalkane
    • 三羟甲基烷烃的生产方法
    • US6034284A
    • 2000-03-07
    • US175431
    • 1998-10-20
    • Kenji DoiTakuhiko JinnoAyao MoriyamaShingo Uji
    • Kenji DoiTakuhiko JinnoAyao MoriyamaShingo Uji
    • C07C29/38C07C29/80C07C31/18
    • C07C29/80C07C29/38
    • High quality trimethylolalkane can be easily and efficiently produced at a high yield through a reaction between n-alkanal and formaldehyde in the presence of tertiary amine and water, in which a reaction mixture obtained after the reaction is heated up to a temperature at which a salt of tertiary amine with formic acid produced as a by-product can be thermally dissociated so as to distill tertiary amine and water from the reaction mixture, and a formate of trimethylolalkane produced in the distillation of tertiary amine and contained in a residue is reacted with water, ammonia, primary amine or secondary amine; and the tertiary amine distilled from the reaction mixture is reused in producing trimethylolalkane.
    • 通过在叔胺和水的存在下通过正链烷醛和甲醛之间的反应,可以以高产率容易且有效地制备高品质的三羟甲基烷烃,其中将反应后获得的反应混合物加热到盐的​​温度 的叔胺与作为副产物产生的甲酸的热分解可以被热解离,以便从反应混合物中蒸馏出叔胺和水,并将在蒸馏叔胺中并含在残余物中的三羟甲基烷烃的甲酸酯与水 ,氨,伯胺或仲胺; 从反应混合物中蒸馏出的叔胺再次用于生产三羟甲基烷烃。