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51. 发明授权

US4849544A 1,3-Diaminocyclohexanes 失效
标题翻译： 1,3-二氨基环己烷
公开(公告)号：US4849544A
公开(公告)日：1989-07-18
申请号：US181045
申请日：1988-04-13
申请人： Scott A. Culley , Kestutis A. Keblys , Christopher J. Nalepa
发明人： Scott A. Culley , Kestutis A. Keblys , Christopher J. Nalepa
IPC分类号： C07C211/36
CPC分类号： C07C211/36 , C07C2101/14
摘要： 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.
摘要翻译：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。

52. 发明授权

US4595742A Di(alkylthio)diamine chain extenders for polyurethane elastomers 失效
标题翻译：用于聚氨酯弹性体的二（烷硫基）二胺增链剂
公开(公告)号：US4595742A
公开(公告)日：1986-06-17
申请号：US708028
申请日：1985-03-04
申请人： Christopher J. Nalepa , Paul F. Ranken , Karl E. Wiegand
发明人： Christopher J. Nalepa , Paul F. Ranken , Karl E. Wiegand
IPC分类号： C08G18/00 , C08G18/10 , C08G18/65 , C08G18/32 , B29B7/00
CPC分类号： C08G18/10
摘要： Polyurethanes and a process for their preparation with aromatic diamines having an aromatic ring, one of said at least one aromatic ring having thereon at least two alkylthio substituents and at least one amino substituent. An isocyanate prepolymer may be combined with a diamine chain extender of the invention and cured at suitable processing temperatures to form elastomers with good physical properties.
摘要翻译：聚氨酯及其制备芳族二胺的方法，所述芳族二胺具有芳香环，所述至少一个芳族环之一上具有至少两个烷硫基取代基和至少一个氨基取代基。异氰酸酯预聚物可以与本发明的二胺扩链剂组合，并在合适的加工温度下固化以形成具有良好物理性能的弹性体。

53. 发明授权

US4476332A Preparation of alkanediols 失效
标题翻译：烷二醇的制备
公开(公告)号：US4476332A
公开(公告)日：1984-10-09
申请号：US564089
申请日：1983-12-21
申请人： Christopher J. Nalepa
发明人： Christopher J. Nalepa
IPC分类号： C07C29/10 , C07C31/20 , C07C29/132 , C07C33/26 , C07C59/245 , C07C67/00
CPC分类号： C12C11/02 , C07C29/172
摘要： Disclosed is an improved process for producing alkanediols by the hydrolytic reduction of hydrolytically reducible furans. The improvement comprises utilizing a supported ruthenium catalyst, and trihaloacetic acid or a mixture thereof as a promoter for the hydrolytic reduction. The hydrolytic reduction is conducted in an aqueous medium at elevated temperatures and elevated pressures.
摘要翻译：公开了通过水解还原呋喃的水解还原制备烷二醇的改进方法。该改进包括使用负载的钌催化剂和三卤代乙酸或其混合物作为水解还原的促进剂。水解还原在水介质中在升高的温度和升高的压力下进行。

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