Method of increasing hydrogenation rate of aromatic amines
    3.
    发明授权
    Method of increasing hydrogenation rate of aromatic amines 失效
    提高芳香胺加氢速率的方法

    公开(公告)号:US5550294A

    公开(公告)日:1996-08-27

    申请号:US307215

    申请日:1994-09-16

    申请人: Peter J. Whitman

    发明人: Peter J. Whitman

    CPC分类号: C07C211/36 C07C209/72

    摘要: A process for increasing the rate of catalytic hydrogenation of aromatic amines by reacting aromatic amines with hydrogen in the presence of a noble metal catalyst, a water miscible organic solvent, lithium hydroxide catalyst promoter, and water in an effective amount to increase the rate of the hydrogenation reaction without an appreciable increase in total amounts of by-products.

    摘要翻译: 在贵金属催化剂,水混溶性有机溶剂,氢氧化锂催化剂促进剂和水的存在下,通过使芳族胺与氢反应,在有效量下提高芳族胺的催化氢化速率的方法, 氢化反应而副产物总量不会明显增加。

    Promoters for hydrogenation of aromatic amines
    4.
    发明授权
    Promoters for hydrogenation of aromatic amines 失效
    芳香胺氢化促进剂

    公开(公告)号:US5214212A

    公开(公告)日:1993-05-25

    申请号:US842822

    申请日:1992-02-27

    申请人: Peter J. Whitman

    发明人: Peter J. Whitman

    IPC分类号: C07C209/72

    CPC分类号: C07C209/72

    摘要: A process for increasing the rate of catalytic hydrogenation of aromatic amines by reacting aromatic amines with hydrogen in the presence of a noble metal catalyst, an organic solvent or a mixture of solvents, and at least one salt of a transition or lanthanide metal as a promoter, in an effective amount to increase the rate of the hydrogenation reaction, decrease the induction period, and decrease the amount of higher boiler by-products.

    摘要翻译: 在贵金属催化剂,有机溶剂或溶剂混合物存在下,通过使芳族胺与氢反应使芳族胺的催化氢化速率提高的方法,以及至少一种转化或镧系金属的盐作为助催化剂 ,有效提高氢化反应速率,降低诱导期,降低锅炉副产物的含量。

    Process for the preparation of di(amino phenyl)methanes
    5.
    发明授权
    Process for the preparation of di(amino phenyl)methanes 失效
    制备二(氨基苯基)甲烷的方法

    公开(公告)号:US4039581A

    公开(公告)日:1977-08-02

    申请号:US590801

    申请日:1975-06-27

    摘要: Aniline and formaldehyde are condensed (2-10 moles aniline per mole of formaldehyde) at ambient temperature in the absence of acid catalysts to give a mixture of aminals (anilinoacetals) and aniline from which the water is removed. The anhydrous aminals are contacted with a solid catalyst (clays, zeolites, diatomaceous earth) using either batch or continuous operation initially at 20.degree. C to 55.degree. C until benzylamine formation is substantially complete, then at 50.degree. C to 65.degree. C until benzylamine conversion to methylene polyphenyl polyamines is 75 - 90% complete and finally at 80.degree. C to 100.degree. C. A polyamine mixture is obtained in which diaminodiphenylmethane is the major (order of 90 percent by weight or higher) component, the bulk of the higher oligomeric polyamines being triamine. The diaminodiphenylmethane component contains of the order of 85 percent of 4,4'-isomer, the rest being 2,4'-isomer except for very small amounts (order of 2 percent or less) of 2,2'-isomer.Advantages of the process include high yield of diaminodiphenylmethane with relatively high 4,4'-isomer content, low oligomeric polyamine content, low temperature operation (energy consumption lower), no acidic reactants to cause corrosion of equipment, and rapid rates of conversion.

    摘要翻译: 在不存在酸催化剂的情况下,在环境温度下,苯胺和甲醛缩合(每摩尔甲醛为2-10摩尔苯胺),得到除去水的胺(苯胺基缩醛)和苯胺的混合物。 使用间歇或连续操作,在20℃至55℃下使无水胺与固体催化剂(粘土,沸石,硅藻土)接触,直到苄胺形成基本完成,然后在50℃至65℃下直至苄胺 转化为亚甲基多苯基多胺的组合物为75-90%,最后在80℃至100℃。得到多胺混合物,其中二氨基二苯基甲烷为主要成分(90%重量或更高) 低聚多胺是三胺。 二氨基二苯基甲烷组分含有约为85%的4,4'-异构体,其余为2,4'-异构体,只是非常少量(2%或更低的量级)的2,2'-异构体。

    Multifunctional allyl carbamates and coatings therefrom
    7.
    发明授权
    Multifunctional allyl carbamates and coatings therefrom 失效
    多功能烯丙基氨基甲酸酯及其涂料

    公开(公告)号:US06780951B2

    公开(公告)日:2004-08-24

    申请号:US10314608

    申请日:2002-12-09

    IPC分类号: C08L7516

    摘要: Allyl carbamates are disclosed. The allyl carbamates are prepared by reacting an isocyanate with an allylic alcohol or alkoxylated allylic alcohol. Suitable isocyanates are selected from hexamethylene diisocyanate (HDI), HDI biuret, dimer, HDI trimer, HDI allophanate, isophorone diisocyanate (IPDI), IPDI trimer, IPDI allophanate, bis(isocyanatocyclohexyl)methane, and mixtures thereof. The allyl carbamates have at least two allyl functional groups per molecule. UV-curable and air-drying coatings formulated from the allyl carbamates show excellent chemical resistance and physical properties.

    摘要翻译: 公开了烯丙基氨基甲酸酯。 通过使异氰酸酯与烯丙基醇或烷氧基化烯丙基醇反应来制备烯丙基氨基甲酸酯。 合适的异氰酸酯选自六亚甲基二异氰酸酯(HDI),HDI缩二脲,二聚体,HDI三聚体,HDI脲基甲酸酯,异佛尔酮二异氰酸酯(IPDI),IPDI三聚体,IPDI脲基甲酸酯,双(异氰酸根合环己基)甲烷及其混合物。 烯丙基氨基甲酸酯每分子具有至少两个烯丙基官能团。 由烯丙基氨基甲酸酯配制的紫外线固化和空气干燥涂料显示出优异的耐化学性和物理性能。

    Multifunctional allyl carbamates and coatings therefrom
    8.
    发明授权
    Multifunctional allyl carbamates and coatings therefrom 失效
    多功能烯丙基氨基甲酸酯及其涂料

    公开(公告)号:US06555596B1

    公开(公告)日:2003-04-29

    申请号:US09706629

    申请日:2000-11-06

    IPC分类号: C08F246

    摘要: Allyl carbamates are disclosed. The allyl carbamates are prepared by reacting an isocyanate with an allylic alcohol or alkoxylated allylic alcohol. Suitable isocyanates are selected from hexamethylene diisocyanate (HDI), HDI biuret, dimer, HDI trimer, HDI allophanate, isophorone diisocyanate (IPDI), IPDI trimer, IPDI allophanate, bis(isocyanatocyclohexyl)methane, and mixtures thereof. The allyl carbamates have at least two allyl functional groups per molecule. UV-curable and air-drying coatings formulated from the allyl carbamates show excellent chemical resistance and physical properties.

    摘要翻译: 公开了烯丙基氨基甲酸酯。 通过使异氰酸酯与烯丙基醇或烷氧基化烯丙基醇反应来制备烯丙基氨基甲酸酯。 合适的异氰酸酯选自六亚甲基二异氰酸酯(HDI),HDI缩二脲,二聚体,HDI三聚体,HDI脲基甲酸酯,异佛尔酮二异氰酸酯(IPDI),IPDI三聚体,IPDI脲基甲酸酯,双(异氰酸根合环己基)甲烷及其混合物。 烯丙基氨基甲酸酯每分子具有至少两个烯丙基官能团。 由烯丙基氨基甲酸酯配制的紫外线固化和空气干燥涂料显示出优异的耐化学性和物理性能。

    Polymethylene polyphenyl polyisocyanate
    9.
    发明授权
    Polymethylene polyphenyl polyisocyanate 失效
    聚亚甲基多苯基多异氰酸酯

    公开(公告)号:US4092343A

    公开(公告)日:1978-05-30

    申请号:US797545

    申请日:1977-05-16

    CPC分类号: C08G18/7664

    摘要: A process is described for the preparation of polymethylene polyphenyl polyamines containing from 40 to 60 percent by weight of diamine and also containing markedly less high molecular weight polyamines than products hitherto available. Phosgenation of the polyamines gives the corresponding mixture of polymethylene polyphenyl polyisocyanates of markedly lower viscosity and lighter color than products hitherto available, and yielding polymer foams which are substantially white in color.The process comprises condensing aniline and formaldehyde (molar ratio 4-10:1) in the absence of catalyst, separating water from the resulting aminal mixture, contacting the aminals at 20.degree. C to 60.degree. C with a solid catalyst (diatomaceous earths, clays, zeolites) until formation of benzylamines is substantially complete, distilling aniline from the resulting benzylamines under reduced pressure and below 150.degree. C until the aniline content is 3 to 22 percent by weight, and contacting the resulting product with a solid catalyst (diatomaceous earths, clays, zeolites) at 100.degree. C to 190.degree. C until conversion to polymethylene polyphenyl polyamines is complete.

    摘要翻译: 描述了一种制备含有40至60重量%二胺的聚亚甲基多苯基多胺的方法,并且与目前可获得的产品相比,含有显着较少的高分子量多胺。 多胺的光气化产生与目前可获得的产品相比显着低粘度和较浅颜色的聚亚甲基多苯基多异氰酸酯的相应混合物,并产生基本上为白色的聚合物泡沫。