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    • 4. 发明授权
    • Isophorone urethane polyamine, a process for its preparation and its use
    • 异佛尔酮聚氨酯多胺,其制备及其用途
    • US5459204A
    • 1995-10-17
    • US206854
    • 1994-03-07
    • Rainer LomoelderWilfried PaulenFelix SchmittElmar Wolf
    • Rainer LomoelderWilfried PaulenFelix SchmittElmar Wolf
    • C07D251/30C07C269/02C07C271/32C07C271/34C07D251/34C08G59/50C08G59/54C07C271/36C08G18/10C08G18/32
    • C08G59/54C07C271/32C07D251/34C07C2101/14
    • The invention relates to a new polyamine of the following composition: ##STR1## wherein 1.gtoreq.n.gtoreq.6, R represents the hydrocarbon radical of a (cyclo)aliphatic, araliphatic or aromatic diisocyanate having 6-20 C atoms or a trimer thereof andwherein when 2.gtoreq.n.gtoreq.6,R.sup.1 represents an n-valent organic radical such as is formed by removal of n OH groups from a polyhydroxy compound which optionally contains ether oxygen atoms and has an average molecular weight Mn of between 60 and 5,000; andwhen n=1,R.sup.1 represents ##STR2## It furthermore relates to a process for the preparation of a polyamine, in which certain diisocyanates, adducts of diisocyanates with polyols or trimers thereof are reacted with the Schiff base of the following composition: ##STR3## wherein R.sup.2 =H or a branched or unbranched C.sub.1-14 -alkyl radical and R.sup.3 =a branched or unbranched C.sub.1-14 -alkyl radical, an C.sub.1-14 alkyl-substituted phenyl radical or a C.sub.1 -C.sub.8 -cycloalkyl radical and, when the reaction has taken place, the polyazomethine formed (poly-Schiff base) is hydrolyzed completely with excess water and the carbonyl compound formed is distilled off.The polyamine according to the invention is employed for curing epoxy resins.
    • 本发明涉及以下组合物的新型多胺:其中R 1表示(环)脂族,芳脂族或芳族的烃基(II), 具有6-20个碳原子的二异氰酸酯或其三聚体,并且其中当R 2表示n价有机基团时,例如通过从多羟基化合物中除去n个OH基团而形成,所述多羟基化合物任选地含有醚 氧原子,平均分子量Mn为60〜5000; 并且当n = 1时,R 1表示其还涉及制备多胺的方法,其中将二异氰酸酯与多元醇或其三聚体的加合物与下列组成的席夫碱反应:其中R 2 = H或支链或非支链C 1-14 - 烷基,且R 3 =支链或非支链C 1-14 - 烷基,C 1-14烷基取代的苯基或C 1 -C 8环烷基, 发生反应,形成的多偶氮甲碱(聚席夫碱)用过量水完全水解,形成的羰基化合物被蒸馏掉。 本发明的多胺用于固化环氧树脂。