Process for the preparation of a polycarbodiimide solution
    1.
    发明授权
    Process for the preparation of a polycarbodiimide solution 失效
    制备聚碳二亚胺溶液的方法

    公开(公告)号:US5750637A

    公开(公告)日:1998-05-12

    申请号:US658166

    申请日:1996-06-04

    CPC分类号: C08G73/00 C08G18/025

    摘要: This invention provides a process for the preparation of a polycarbodiimide solution wherein the polycarbodiimide is synthesized by heating an organic diisocyanate (e.g., 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate) in the presence of a carbodiimidation catlayst characterized in that a non-chlorinated aromatic hydrocarbon is used as the solvent and the resulting polycarbodiimide has a number average molecular weight from about 3,000 to about 10,000; wherein the synthesis is performed in the temperature range of from about 100.degree. to about 120.degree. C.

    摘要翻译: 本发明提供一种制备聚碳二亚胺溶液的方法,其中聚碳二亚胺通过在碳二亚胺二酰亚胺存在下加热有机二异氰酸酯(例如,2,4-甲苯二异氰酸酯或2,6-甲苯二异氰酸酯)来合成,其特征在于, 使用非氯化芳烃作为溶剂,所得聚碳二亚胺的数均分子量为约3,000至约10,000; 其中合成在约100℃至约120℃的温度范围内进行。