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    • 3. 发明授权
    • 1,3-Diaminocyclohexanes
    • 1,3-二氨基环己烷
    • US4849544A
    • 1989-07-18
    • US181045
    • 1988-04-13
    • Scott A. CulleyKestutis A. KeblysChristopher J. Nalepa
    • Scott A. CulleyKestutis A. KeblysChristopher J. Nalepa
    • C07C211/36
    • C07C211/36C07C2101/14
    • Sterically hindered 1,3-diaminocyclohexanes which can be used in the preparation of polyurethane, polyurea, polyurethaneurea, and epoxy resins are prepared by hydrogenating a metaphenylenediamine having alkyl substituents of 1-6 carbons in the 4- and 6-positions and optionally also in the 2-position, at least one of the alkyl substituents containing at least two carbons, and the total number of carbons in the alkyl substituents being at least five, at a temperature of about 170.degree.-200.degree. C. and a pressure of at least about 6.9 MPa, preferably about 20-30 MPa, in the presence of a supported ruthenium catalyst and an activating amount of a modifier selected from alkali metal hydroxides and alkoxides and alkali metal amide salts of the meta-phenylenediamine to form the corresponding 1,3-diaminocyclohexane.
    • 可用于制备聚氨酯,聚脲,聚氨酯脲和环氧树脂的可受阻的1,3-二氨基环己烷是通过在4-和6-位上氢化具有1-6个碳烷基取代基的间苯二胺制备的, 2-位,至少一个含有至少两个碳的烷基取代基,烷基取代基中的碳总数至少为五个,温度为约170℃-200℃,压力为 在负载的钌催化剂和活化量的选自碱金属氢氧化物和醇盐的改性剂和间苯二胺的碱金属酰胺盐的存在下,至少约6.9MPa,优选约20-30MPa,形成相应的1, 3-二氨基环己烷。