Process for the procuction of aromatic urethanes
    3.
    发明授权
    Process for the procuction of aromatic urethanes 失效
    生产芳香族聚氨酯的方法

    公开(公告)号:US5688988A

    公开(公告)日:1997-11-18

    申请号:US671179

    申请日:1996-06-27

    CPC分类号: C07C269/04

    摘要: A process is described for the preparation of aromatic urethanes in which organic carbonate in a stoichiometric quantity or in a quantity higher than the stoichiometric value is reacted with an aromatic amine operating in the presence of a carbamation catalyst, wherein this catalyst is selected from zinc and/or copper carbonate hydroxide. The process gives high yields and selectivity in the useful reaction product.

    摘要翻译: 描述了一种用于制备芳族聚氨酯的方法,其中化学计量量或高于化学计量值的有机碳酸酯与在氨基甲酸酯化催化剂存在下操作的芳族胺反应,其中该催化剂选自锌 和/或碳酸氢铜。 该方法在有用的反应产物中产生高产率和选择性。