公开(公告)号：US4567287A

公开(公告)日：1986-01-28

申请号：US638800

申请日：1984-08-08

申请人： Floro F. Frulla ,  Fred A. Stuber ,  Peter J. Whitman

发明人： Floro F. Frulla ,  Fred A. Stuber ,  Peter J. Whitman

IPC分类号： C07C271/06 ,  C07C125/065 ,  C07C125/073

CPC分类号： C07C271/06

摘要： Disclosed is an improved process for the preparation of carbamates by heating an organic carbonate and an aromatic urea or polyurea in the presence of aluminum as catalyst and a promoter comprising a combination of iodine and a mercury salt.High reaction temperatures are avoided by the process and conversions to carbamate products are high. Additionally, the process is economically attractive because even the common aluminum foil can be used as the catalyst.The products prepared by the process can be used in the production of insecticides, and, particularly, as intermediates in the preparation of organic mono- and polyisocyanates.

摘要翻译： 公开了一种通过在铝作为催化剂存在下加热有机碳酸酯和芳族脲或聚脲，以及包含碘和汞盐的组合的促进剂来制备氨基甲酸酯的改进方法。 通过该方法避免了高反应温度，并且转化为氨基甲酸酯产物是高的。 另外，该方法在经济上是有吸引力的，因为即使普通的铝箔也可以用作催化剂。 通过该方法制备的产品可用于生产杀虫剂，特别是用作制备有机单 - 和多异氰酸酯的中间体。

公开(公告)号：US4550188A

公开(公告)日：1985-10-29

申请号：US625060

申请日：1984-06-27

申请人： Floro F. Frulla ,  Fred A. Stuber ,  Peter J. Whitman

发明人： Floro F. Frulla ,  Fred A. Stuber ,  Peter J. Whitman

IPC分类号： C07C271/06 ,  C07C125/065 ,  C07C125/073

CPC分类号： C07C271/06

摘要： Disclosed is an improved process for the preparation of carbamates by heating an organic carbonate and an aromatic amine in the presence of aluminum as catalyst and a promoter comprising a combination of iodine and a mercury salt.High reaction temperatures are avoided by the process and conversions to carbamate products are high. Additionally, the process is economically attractive because even the common aluminum foil can be used as the catalyst.The products prepared by the process can be used in the production of insecticides, and, particularly, as intermediates in the preparation of organic mono- and polyisocyanates.

摘要翻译： 公开了一种通过在作为催化剂的铝的存在下加热有机碳酸酯和芳族胺并且包含碘和汞盐的组合的促进剂来制备氨基甲酸酯的改进方法。 通过该方法避免了高反应温度，并且转化为氨基甲酸酯产物是高的。 另外，该方法在经济上是有吸引力的，因为即使普通的铝箔也可以用作催化剂。 通过该方法制备的产品可用于生产杀虫剂，特别是用作制备有机单 - 和多异氰酸酯的中间体。

公开(公告)号：US4039580A

公开(公告)日：1977-08-02

申请号：US598794

申请日：1975-07-24

申请人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

发明人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

IPC分类号： C08G12/00 ,  B01J21/00 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/54 ,  C07C209/60 ,  C07C209/78 ,  C07C211/50 ,  C07C211/53 ,  C07C241/00 ,  C07C265/14 ,  C08G12/08 ,  C08G18/76 ,  C07C85/08

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。

公开(公告)号：US4092343A

公开(公告)日：1978-05-30

申请号：US797545

申请日：1977-05-16

申请人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

发明人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

IPC分类号： C08G12/00 ,  B01J21/00 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/54 ,  C07C209/60 ,  C07C209/78 ,  C07C211/50 ,  C07C211/53 ,  C07C241/00 ,  C07C265/14 ,  C08G12/08 ,  C08G18/76 ,  C07C119/048 ,  C07C118/02

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。

公开(公告)号：US4039581A

公开(公告)日：1977-08-02

申请号：US590801

申请日：1975-06-27

申请人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

发明人： Floro F. Frulla ,  Adnan A. R. Sayigh ,  Henri Ulrich ,  Peter J. Whitman

IPC分类号： C08G12/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/54 ,  C07C209/60 ,  C07C209/78 ,  C07C211/50 ,  C08G12/08 ,  C08G73/02 ,  C07C85/08

CPC分类号： C08G73/02 ,  C07C209/24 ,  C07C209/54 ,  C07C263/10 ,  C08G12/08

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。