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    • 22. 发明授权
    • Polyamines and a process for their production
    • 多胺及其生产工艺
    • US4578500A
    • 1986-03-25
    • US553722
    • 1983-11-21
    • Werner RasshoferGerhard Balle
    • Werner RasshoferGerhard Balle
    • C08G18/10C08G18/50C07C87/50C07C85/20C07C125/06
    • C08G18/5048C08G18/10
    • Compounds containing from 0.15 to 20.3 wt. % aromatic amino groups are produced by hydrolyzing an isocyanate compound mixed with water and a solvent or solvent mixture at -20.degree. to 185.degree. C. The isocyanate starting material must contain at least two aromatically bound isocyanate groups and an isocyanate content of from 0.5 to 40 wt. %. The water must be used in at least a stoichiometric amount but is preferably used in excess. The solvent or solvent mixture must contain 50-100 wt. % solvent containing ether and/or thioether bonds. A partly water-soluble solvent may be used in an amount no greater than 50 wt. % total solvent. No acidic or basic catalysts are present during the hydrolysis. The product amine may be isolated by phase separation, filtration or extraction. The amines thus-produced are particularly useful in the production of polyurethane(urea)s.
    • 含有0.15〜20.3重量% 通过水解与水和溶剂或溶剂混合物在-20至185℃的异氰酸酯化合物来制备%芳族氨基。异氰酸酯原料必须含有至少两个芳香结合的异氰酸酯基团,异氰酸酯含量为0.5至 40重量% %。 水必须至少使用化学计量,但优选过量使用。 溶剂或溶剂混合物必须含有50-100wt。 %溶剂含有醚和/或硫醚键。 部分水溶性溶剂的用量不得大于50wt。 %总溶剂。 在水解期间不存在酸性或碱性催化剂。 产物胺可以通过相分离,过滤或萃取分离。 如此生产的胺在聚氨酯(尿素)的生产中特别有用。
    • 25. 发明授权
    • Polyamines and a single-stage process for the production thereof
    • 多胺及其制备的单阶段方法
    • US4525534A
    • 1985-06-25
    • US511367
    • 1983-07-06
    • Werner Rasshofer
    • Werner Rasshofer
    • C08G18/00C08G18/10C08G18/30C08G18/46C08G18/50C08G18/64C08G18/83C08G18/08
    • C08G18/6415C08G18/10C08G18/4615C08G18/4623C08G18/5048
    • Polyamines containing aromatic and/or aliphatic primary amino groups are produced by hydrolyzing an isocyanate compound in the presence of water, an insoluble basic compound as a catalyst and a water-miscible solvent in a single reaction step. The isocyanate compound has an NCO-content of from 0.5 to 40 wt % and is preferably a prepolymer. The (pH-) basic compound is substantially insoluble in both water and the organic solvents generally used in such processes. An isocyanate-reactive compound may also be included in the reaction mixture in an amount which is from 0.1 to 15 wt % (based on isocyanate compound). The hydrolysis reaction is generally carried out at a temperature from 50.degree. to 165.degree. C. in a manner such that the reaction mixture remains substantially homogeneous. The product polyamines contain from 0.19 to 20.3 wt % primary amino groups. These polyamines are particularly useful in the production of polyurethanes.
    • 通过在单一反应步骤中,在水,不溶性碱性化合物作为催化剂和水混溶性溶剂的存在下水解异氰酸酯化合物来制备含有芳族和/或脂族伯氨基的多胺。 异氰酸酯化合物的NCO含量为0.5〜40重量%,优选为预聚物。 (pH-)碱性化合物基本上不溶于水和通常用于这些方法的有机溶剂。 异氰酸酯反应性化合物也可以以0.1至15重量%(基于异氰酸酯化合物)的量包含在反应混合物中。 水解反应通常在50至165℃的温度下进行,使得反应混合物保持基本上均匀。 产物多胺含有0.19至20.3重量%的伯氨基。 这些多胺在聚氨酯的生产中特别有用。