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1.发明授权Process for producing polyisocyanates of the diphenyl methane series having a reduced color value 有权具有降低的颜色值的二苯基甲烷系列的多异氰酸酯的制备方法公开(公告)号：US06639102B2
公开(公告)日：2003-10-28
申请号：US10384890
申请日：2003-03-10
IPC分类号： C07C26310
CPC分类号： C08G18/7664 , C07C209/78 , C07C263/10 , C07C211/50 , C07C265/14
摘要： Polyisocyanates of the diphenyl methane series having reduced color values are obtained by a) reacting aniline and formaldehyde in the presence of an acid catalyst to form a polyamine, b) neutralizing the reaction mixture containing polyamine with a base, c) separating the neutralized mixture into the aqueous and the organic phases, d) adding a base to the organic phase and then e) phosgenating the resulting polyamine to produce the corresponding polyisocyanate.
摘要翻译： 通过a）在酸催化剂存在下使苯胺和甲醛反应形成多胺，b）使含有多胺的反应混合物与碱中和，c）将中和的混合物分离成 水相和有机相，d）向有机相中加入碱，然后e）使得到的多胺光气化以产生相应的多异氰酸酯。
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2.发明申请Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation 有权在低质子化程度下制备二苯基甲烷系列的多胺的方法公开(公告)号：US20060287555A1
公开(公告)日：2006-12-21
申请号：US11170624
申请日：2005-06-29
申请人： Torsten Hagen , Daniel Koch , Hans-Georg Pirkl , Fritz Pohl , Stefan Wershofen , Rudolf Uchdorf , Richard Adamson
发明人： Torsten Hagen , Daniel Koch , Hans-Georg Pirkl , Fritz Pohl , Stefan Wershofen , Rudolf Uchdorf , Richard Adamson
IPC分类号： C07C209/26
CPC分类号： C08G18/7664 , C07C209/78 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The invention provides a process for the preparation of polyamines of the diphenylmethane series. This process comprises a) reacting aniline and formaldehyde in a molar ratio of 1.5:1 to 6:1, in the presence of an acid catalyst at temperatures of 20° C. to 100° C., in which the water content in the acid reaction mixture is
摘要翻译： 本发明提供了制备二苯基甲烷系列多胺的方法。 该方法包括a）在酸催化剂存在下，在20℃至100℃的温度下，使摩尔比为1.5:1至6:1的苯胺和甲醛反应，其中酸中的水含量 反应混合物<20wt。 ％，质子化度<15％，b）当对氨基苄基苯胺的重量含量与4,4'-二苯胺的比例时，将反应温度升高至110℃至250℃。 '-MDA在反应混合物中低于1.00的值。
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3.发明授权Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation 有权在低质子化程度下制备二苯基甲烷系列的多胺的方法公开(公告)号：US07253321B2
公开(公告)日：2007-08-07
申请号：US11170624
申请日：2005-06-29
申请人： Torsten Hagen , Daniel Koch , Hans-Georg Pirkl , Fritz Pohl , Stefan Wershofen , Rudolf Uchdorf , Richard Adamson
发明人： Torsten Hagen , Daniel Koch , Hans-Georg Pirkl , Fritz Pohl , Stefan Wershofen , Rudolf Uchdorf , Richard Adamson
IPC分类号： C07C209/78
CPC分类号： C08G18/7664 , C07C209/78 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The invention provides a process for the preparation of polyamines of the diphenylmethane series. This process comprises a) reacting aniline and formaldehyde in a molar ratio of 1.5:1 to 6:1, in the presence of an acid catalyst at temperatures of 20° C. to 100° C., in which the water content in the acid reaction mixture is
摘要翻译： 本发明提供了制备二苯基甲烷系列多胺的方法。 该方法包括a）在酸催化剂存在下，在20℃至100℃的温度下，使摩尔比为1.5:1至6:1的苯胺和甲醛反应，其中酸中的水含量 反应混合物<20wt。 ％，质子化度<15％，b）当对氨基苄基苯胺的重量含量与4,4'-二苯胺的比例时，将反应温度升高至110℃至250℃。 '-MDA在反应混合物中低于1.00的值。
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公开(公告)号：US06649798B2
公开(公告)日：2003-11-18
申请号：US10203250
申请日：2002-08-07
申请人： Stephan Klein , Dirk Grotjohann , Christine Mendoza-Frohn , Daniel Koch , Heinz-Herbert Müller , Hans-Georg Pirkl , Rudolf Uchdorf , Gerhard Wegener
发明人： Stephan Klein , Dirk Grotjohann , Christine Mendoza-Frohn , Daniel Koch , Heinz-Herbert Müller , Hans-Georg Pirkl , Rudolf Uchdorf , Gerhard Wegener
IPC分类号： C07C21100
CPC分类号： C07C209/78 , C07C211/50
摘要： The present invention concerns a process for the production of methylenedianiline (MDA) having a high monomer content.
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公开(公告)号：US4853191A
公开(公告)日：1989-08-01
申请号：US159147
申请日：1988-02-25
IPC分类号： B01D53/02 , B01D53/04 , B01D53/14 , B01D53/48 , B01D53/50 , B01D53/81 , B01J20/26 , B01J20/34
CPC分类号： B01D53/507 , B01D53/1493 , B01D53/48
摘要： A process for the selective removal of sulfur-containing gases from industrial gases or waste gases by treatment of gases with basic substances, characterized in that the basic substances are carrier materials containing tertiary amino groups corresponding to the following formula: ##STR1## in which m and n individually are 1 or 2,x and y individually are from 0 to 10 and preferably 0 to 2,R and R' individually are hydrogen or alkyl andR" is hydrogen or methyl.
摘要翻译： 一种通过用碱性物质处理气体来从工业气体或废气中选择性除去含硫气体的方法，其特征在于碱性物质是含有对应于下式的叔氨基的载体材料：其中m 和n分别为1或2，x和y各自为0至10，优选0至2，R和R'各自为氢或烷基，R“为氢或甲基。
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公开(公告)号：US4924028A
公开(公告)日：1990-05-08
申请号：US335062
申请日：1989-04-06
IPC分类号： C07C209/68 , C07C209/78 , C07C211/49
CPC分类号： C07C209/78
摘要： This invention relates to an improved process for the preparation of polynuclear aromatic polyamines in which the reaction product is prepared by condensing aniline with formaldehyde in the presence of water and acidic catalysts and is worked up by extraction with a hydrophobic solvent. The acid catalyst that accumulates in the aqueous phase during the extraction process is reused.
摘要翻译： 本发明涉及制备多核芳族多胺的改进方法，其中通过在水和酸性催化剂存在下将苯胺与甲醛缩合制备反应产物，并通过用疏水性溶剂萃取来处理。 在萃取过程中积累在水相中的酸催化剂被重复使用。
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7.发明授权公开(公告)号：US07528283B2
公开(公告)日：2009-05-05
申请号：US11657147
申请日：2007-01-24
IPC分类号： C07C209/78
CPC分类号： C07C209/78 , C07C211/50
摘要： The invention provides an improved process for preparing diamines and polyamines from the diphenylmethane series by reacting aniline and formaldehyde in the presence of an acid catalyst, the improvement involving the aniline containing less than about 3 wt. % of diamines and polyamines from the diphenylmethane series, based on the weight of the aniline.
摘要翻译： 本发明提供了一种通过在酸催化剂存在下使苯胺和甲醛反应从二苯基甲烷系列制备二胺和多胺的改进方法，涉及含有小于约3wt。 基于苯胺的重量，来自二苯基甲烷系列的二胺和多胺的百分比。
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公开(公告)号：US5359141A
公开(公告)日：1994-10-25
申请号：US863938
申请日：1992-04-06
IPC分类号： B01J27/02 , B01J27/10 , B01J27/16 , B01J31/02 , B01J31/04 , C07B61/00 , C07C209/78 , C07C209/82 , C07C211/50 , C07C209/84
CPC分类号： C07C209/78 , Y02P20/584
摘要： The invention relates to an improved process for the production of polynuclear aromatic polyamines by condensation of aniline with formaldehyde in the presence of water and acidic catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent, the acid catalyst accumulating in the aqueous phase of the extraction step being reused.
摘要翻译： 本发明涉及通过在水和酸性催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取反应混合物进行处理，酸催化剂在水相中积聚 的提取步骤被重复使用。
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公开(公告)号：US5196591A
公开(公告)日：1993-03-23
申请号：US863613
申请日：1992-04-06
IPC分类号： B01J27/08 , C07B61/00 , C07C209/78 , C07C209/82 , C07C211/50 , C07C211/54
CPC分类号： C07C209/78 , Y02P20/584
摘要： The invention relates to an improved process for the production of polynuclear aromatic polyamines by condensation of aniline with formaldehyde in the presence of water and acidic catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent, the acid catalyst accumulating in the aqueous phase of the extraction step being reused.
摘要翻译： 本发明涉及通过在水和酸性催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取反应混合物进行处理，酸催化剂在水相中积聚 的提取步骤被重复使用。
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公开(公告)号：US4914236A
公开(公告)日：1990-04-03
申请号：US185762
申请日：1988-04-25
IPC分类号： B01J38/00 , C07B61/00 , C07C67/00 , C07C209/00 , C07C209/78 , C07C211/00 , C07C211/26 , C07C211/49 , C07C211/57 , C08G12/08 , C08G73/02 , C09B11/02
CPC分类号： C07C209/78
摘要： The present invention relates to an improved process for the preparation of multinuclear aromatic polyamines by the condensation of aniline with formaldehyde in the presence of water and acid catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent. The acid catalyst obtained in the aqueous phase of extraction is reused.
摘要翻译： 本发明涉及通过在水和酸催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取来处理反应混合物。 在萃取水相中获得的酸催化剂被重复使用。
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