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    Improved synthesis of haloformimine compounds
    1.
    发明公开
    Improved synthesis of haloformimine compounds 有权
    改进的卤代亚胺化合物的合成

    公开(公告)号：EP0979814A1

    公开(公告)日：2000-02-16

    申请号：EP99306143.1

    申请日：1999-08-04

    申请人： ROHM AND HAAS COMPANY

    发明人： Berrier, John Vincent ,  Umarvadia, Ashutosh Sumantrai

    IPC分类号： C07C249/12 ,  C07C251/32

    CPC分类号： C07C251/34 ,  C07C249/12

    摘要： Disclosed is an improved method for the preparation of highly pure haloformimine compounds in high yields by reacting a formimine compound in a solvent with a halogenating agent while maintaining the pH of the halogenation reaction in the range of 2 to 5. The pH of the reaction may be maintained by a variety of means, such as by the addition of a base.

    摘要翻译： 本发明公开了一种通过使甲亚胺化合物在溶剂中与卤化剂反应，同时保持卤化反应的pH在2至5的范围内，以高产率制备高纯度卤代亚胺化合物的改进方法。反应的pH可以 通过各种手段进行维护，例如通过增加基地。

    Process for preparing carbamates
    3.
    发明公开
    Process for preparing carbamates 审中-公开
    Verfahren zur Herstellung von Carbamaten

    公开(公告)号：EP0967199A1

    公开(公告)日：1999-12-29

    申请号：EP99304443.7

    申请日：1999-06-08

    申请人： ROHM AND HAAS COMPANY

    发明人： Berrier, John Vincent

    IPC分类号： C07C269/02

    CPC分类号： C07C269/02 ,  C07C271/60

    摘要： Disclosed is a method for the preparation of carbamate compounds substantially free of by-products; the carbamate compounds being prepared by reacting an isocyanate with a hydroxylated compound in the presence of certain catalysts that increase the rate of carbamylation while decreasing the rate of by-product formation. The catalyst being selected from the group consisting of zinc salts, iron salts, tin dihalide, tin tetrahalide and aluminum acetyl acetonate.

    摘要翻译： 公开了一种制备基本上不含副产物的氨基甲酸酯化合物的方法; 氨基甲酸酯化合物通过使异氰酸酯与羟化化合物在某些催化剂存在下反应制备，所述催化剂在降低副产物形成速率的同时提高了氨基甲酰化速率。 催化剂选自锌盐，铁盐，二卤化锡，四卤化锡和乙酰丙酮铝。