Diamines and a process for their production
    3.
    发明授权
    Diamines and a process for their production 失效
    二胺及其生产工艺

    公开(公告)号:US4720582A

    公开(公告)日:1988-01-19

    申请号:US523211

    申请日:1983-08-15

    CPC分类号: C08G18/3234

    摘要: Diamines corresponding to the general formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 may be identical or different and represent hydrogen or straight- or branched-chain C.sub.1 -C.sub.12 alkyl groups, provided that two of the radicals,R.sup.1, R.sup.2 and R.sup.3, represent hydrogen, m and n each represent 0 or 1, provided that m+n=1; where m or n=0, the free valence is saturated by hydrogen, optionally in the form of isomeric mixtures, and optionally containing up to 35%, by weight, of the corresponding perhydrogenated diamines, and up to 10%, by weight, of the corresponding unhydrogenated aromatic diamines.Also, a process for preparing these diamines by catalytically-hydrogenating the corresponding aromatic diamines with 3 moles of hydrogen per mole of diamine, or catalytically-hydrogenating the corresponding dinitro compounds with 9 moles of hydrogen per mole of dinitro compound.

    摘要翻译: 对应于通式“IMAGE”的二胺,其中R 1,R 2和R 3可以相同或不同,表示氢或直链或支链C 1 -C 12烷基,条件是基团R 1,R 2和R 3中的两个表示 氢,m和n各自表示0或1,条件是m + n = 1; 其中m或n = 0,任选地以异构混合物形式的氢饱和,并且任选地含有至多35重量%的相应的过氢化二胺,以及至多10重量%的 相应的未氢化芳族二胺。 另外,通过用相对于每摩尔二胺的3摩尔氢催化氢化相应的芳族二胺或每摩尔二硝基化合物以9摩尔氢催化氢化相应的二硝基化合物来制备这些二胺的方法。