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    • 156. 发明授权
    • Isocyanurate preparation
    • 异氰脲酸盐制剂
    • US4632989A
    • 1986-12-30
    • US737837
    • 1985-05-28
    • Dale F. Regelman
    • Dale F. Regelman
    • C07D251/34C07D295/02C08G18/02C08G18/16C08G18/79
    • C07D295/02C07C255/00C07C265/00C07C265/12C08G18/022C08G18/168C08G18/791
    • Disclosed are novel compositions capable of catalytically trimerizing organic isocyanates said compositions comprising solutions of the reaction products obtained by reacting in an inert solvent in substantially equimolar proportions electron-rich ketene-aminals with electron-poor olefins having the respective formulae (I) and (II) ##STR1## The variously substituted electron-rich ketene-aminals (I), as the name implies, have high electron density associated with the double bond because of the two tertiary amine groups while the electron-poor olefins (II) have the opposite situation due to the presence of electron withdrawing substituents R.sub.9 and R.sub.10.Also disclosed is an improved process for trimerizing organic isocyanates using the above catalyst compositions including the preparation of polyisocyanurate polymers and isocyanurate-modified polyisocyanates.
    • 公开了能够催化三聚有机异氰酸酯的新型组合物,所述组合物包含通过在惰性溶剂中基本上等摩尔比例的富含电子的乙烯酮 - 胺与具有各自式(I)和(II)的电子不足烯烃反应而获得的反应产物的溶液 (I)如下所述,不同取代的富电子酮乙烯酮(I)由于两个叔胺基团而具有与双键相关的高电子密度,而电子 由于吸电子取代基R9和R10的存在,α-烯烃(II)具有相反的情况。 还公开了使用上述催化剂组合物三聚有机异氰酸酯的改进方法,包括制备聚异氰脲酸酯聚合物和异氰脲酸酯改性的多异氰酸酯。