Process for the continuous production of mono- and polyisocyanates
    3.
    发明授权
    Process for the continuous production of mono- and polyisocyanates 失效
    连续生产单异氰酸酯和多异氰酸酯的方法

    公开(公告)号:US4851570A

    公开(公告)日:1989-07-25

    申请号:US263154

    申请日:1988-10-27

    CPC分类号: C07C263/10

    摘要: This invention relates to a process for the continuous production of an organic monoisocyanate or polyisocyanate in a single stage reaction. A reaction mixture is formed by continuously mixing, at a temperature elevated above room temperature but not exceeding about 150.degree. C., a solution in a substantially inert organic solvent of a monoamine or polyamine corresponding to the monoisocyanate or polyisocyanate and a solution in a substantially inert organic solvent of phosgene. The reaction mixture is continuously passed upwards from below through a reaction column comprising at least 10 separate chambers separated by perforated plates, wherein each perforation of said perforated plates has a diameter of less than about 20 mm.

    摘要翻译: 本发明涉及在单级反应中连续生产有机单异氰酸酯或多异氰酸酯的方法。 通过在高于室温但不超过约150℃的温度下连续混合在对应于单异氰酸酯或多异氰酸酯的单胺或多胺的基本惰性有机溶剂中的溶液和基本上 光气惰性有机溶剂。 反应混合物从下方连续地通过包括由多孔板分隔开的至少10个分开的室的反应塔,其中所述多孔板的每个穿孔具有小于约20mm的直径。