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    Preparation of tertiary alkyl isocyanates
    1.
    发明授权
    Preparation of tertiary alkyl isocyanates 失效
    叔烷基异氰酸酯的制备

    公开(公告)号：US4399073A

    公开(公告)日：1983-08-16

    申请号：US371913

    申请日：1982-04-26

    申请人： Frederic C. Schaefer

    发明人： Frederic C. Schaefer

    IPC分类号： C07C263/02 ,  C07C265/04 ,  C07C118/00

    CPC分类号： C07C263/02

    摘要： A process for the production of tertiary alkyl isocyanates, such as tetramethylxylylene diisocyanate, is disclosed in which the corresponding tertiary alkyl halide is reacted with an alkali metal cyanate in the presence of water in an amount between 0.02 and 0.2 percent based on the weight of the reaction mixture.

    摘要翻译： 公开了用于生产叔烷基异氰酸酯的方法，例如四甲基亚二甲苯基二异氰酸酯，其中相应的叔烷基卤化物在水的存在下与碱金属氰酸酯反应，其量为0.02-0.2％，基于 反应混合物。

    Process for preparing halogen-containing organic isocyanates
    2.
    发明授权
    Process for preparing halogen-containing organic isocyanates 失效
    制备含卤素有机异氰酸酯的方法

    公开(公告)号：US3920644A

    公开(公告)日：1975-11-18

    申请号：US48789974

    申请日：1974-07-12

    申请人： KAO CORP

    发明人： HANDA SUSUMU ,  TANAKA YOSHIAKI ,  NISHIBATA ATSUSHI ,  INAMOTO YOSHIAKI

    IPC分类号： C07C265/00 ,  C07C67/00 ,  C07C241/00 ,  C07C263/02 ,  C07C265/08 ,  C07D251/04 ,  C07D251/32 ,  C07D251/34 ,  C08G18/79 ,  C07C118/00

    CPC分类号： C07C263/02 ,  Y10S521/902 ,  C07C265/08

    摘要： A process for preparing halogen-containing organic isocyanates, in which a benzene derivative having a chloromethyl group and an additional benzene-nucleus substituent having a steric interaction with the chloromethyl group and also having a halogen content of at least 80 percent by weight, said substituent being located ortho to the chloromethyl group, and an alkali metal cyanate, are heated at 60* to 190*C, in the presence of an amine compound that does not cause substitution with the chlorine atom of said chloromethyl group.

    摘要翻译： 一种制备含卤素有机异氰酸酯的方法，其中具有氯甲基的苯衍生物和与氯甲基具有空间相互作用并且卤素含量至少为80重量％的另外的苯 - 核取代基，所述取代基 位于氯甲基的邻位和碱金属氰酸盐的混合物在不会由氯甲基的氯原子引起取代的胺化合物的存在下在60℃加热。