Method for decomposing hexamethylene diisocyanate-based polyurea compound
    8.
    发明专利
    Method for decomposing hexamethylene diisocyanate-based polyurea compound 审中-公开
    分解十六烷基二异氰酸酯基聚氨酯化合物的方法

    公开(公告)号:JP2010053055A

    公开(公告)日:2010-03-11

    申请号:JP2008218165

    申请日:2008-08-27

    Abstract: PROBLEM TO BE SOLVED: To provide a method for decomposing a hexamethylene diisocyanate (HDI)-based polyurea, which recovers reusable hexamethylenediamine (HDA) and does not cause a problem of corrosiveness of reactor without adding a hydrolysis promoter such as an alkali, etc., to a urea residue generated as a by-product in the production of HDI which has only been treated hitherto as waste. SOLUTION: The method for decomposing an HDI-based polyurea compound includes hydrolyzing the HDI-based polyurea compound in carbon dioxide in a supercritical state or subcritical state. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种分解六亚甲基二异氰酸酯(HDI)的聚脲的方法,其回收可重复使用的六亚甲基二胺(HDA),并且不会在不加入水解促进剂如碱的情况下引起反应器的腐蚀性问题 等等,涉及在生产HDI中作为副产物产生的尿素残留物,其仅被作为废物处理。 解决方案:分解HDI基聚脲化合物的方法包括在超临界状态或亚临界状态下水解二氧化碳中的HDI基聚脲化合物。 版权所有(C)2010,JPO&INPIT

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