Process for the hydrolysis of adiponitrile and the production of nylon
6,6 utilizing low catalyst levels
    1.
    发明授权
    Process for the hydrolysis of adiponitrile and the production of nylon 6,6 utilizing low catalyst levels 有权
    用于水解己二腈的方法和利用低催化剂水平生产尼龙6,66

    公开(公告)号:US6084056A

    公开(公告)日:2000-07-04

    申请号:US217799

    申请日:1998-12-22

    IPC分类号: C08G69/04 C08G69/28

    CPC分类号: C08G69/04 C08G69/28

    摘要: A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing from 0.1 to 500 mmoles of catalyst (e.g., a mixture of phosphorous acid and calcium hypophosphite) per mole of the dinitrile and in the presence of from 0.01 to 0.5 moles of a dicarboxylic acid cocatalyst (e.g., adipic acid) followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly useful in the production of nylon 6,6 having a low BHMT content and improved melt stability.

    摘要翻译: 使用0.1至500mmol催化剂(例如,亚磷酸和次亚磷酸钙的混合物)/每摩尔二腈水解二腈(例如己二腈)并在0.01至0.5摩尔的 二羧酸助催化剂(如己二酸),然后加入二胺(如六亚甲基二胺)并加热以产生聚合反应。 这种方法在具有低BHMT含量和改进的熔体稳定性的尼龙6,6的生产中特别有用。