公开(公告)号：US07312362B2

公开(公告)日：2007-12-25

申请号：US11657338

申请日：2007-01-24

申请人： Berthold Keggenhoff ,  Richard Adamson ,  Rudolf Uchdorf ,  Fritz Pohl

发明人： Berthold Keggenhoff ,  Richard Adamson ,  Rudolf Uchdorf ,  Fritz Pohl

IPC分类号： C07C209/24

CPC分类号： C07C209/78 ,  C07C209/84 ,  C07C263/10 ,  C07C211/50 ,  C07C265/14

摘要： The present invention relates to a process for the production of mixtures of di- and polyamines of the diphenylmethane series (MDA) containing less than 1,000 ppm of water and less than 200 ppm of aniline by reaction of aniline and formaldehyde in the presence of acid catalysts and subsequent separation of the acid catalyst and subsequent distillative separation of water and aniline in an at least a two-stage distillation including a flash evaporation and subsequent cooling.

摘要翻译： 本发明涉及一种在酸催化剂存在下通过苯胺和甲醛的反应生产含有少于1,000ppm水和小于200ppm苯胺的二苯基甲烷系列（MDA）的二胺和多胺的混合物的方法 随后分离酸催化剂，随后在包括闪蒸和随后冷却的至少两阶段蒸馏中进行水和苯胺的蒸馏分离。

公开(公告)号：US20070179316A1

公开(公告)日：2007-08-02

申请号：US11657147

申请日：2007-01-24

申请人： Fritz Pohl ,  Jeffrey Bolton ,  Richard Adamson ,  Heinz-Herbert Muller ,  Rudolf Uchdorf

发明人： Fritz Pohl ,  Jeffrey Bolton ,  Richard Adamson ,  Heinz-Herbert Muller ,  Rudolf Uchdorf

IPC分类号： C07C209/24

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。

公开(公告)号：US5310769A

公开(公告)日：1994-05-10

申请号：US877684

申请日：1992-05-01

申请人： Christian Konig ,  Manfred Gallus ,  Reinhold Wullner ,  Franz-Moritz Richter ,  Rudolf Uchdorf ,  William C. Forester

发明人： Christian Konig ,  Manfred Gallus ,  Reinhold Wullner ,  Franz-Moritz Richter ,  Rudolf Uchdorf ,  William C. Forester

IPC分类号： B01J27/10 ,  C07B61/00 ,  C07C209/78 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14 ,  C08G18/76 ,  C08G18/00

CPC分类号： C07C209/78

摘要： A process for production of polyamines of the diphenylmethane series through a condensation reaction of aniline with formaldehyde in the presence of an acid catalyst, neutralization of the acid catalyst after reaction completion, and distillation of the resultant polyamine mixture is described. The key feature of the process is the abrupt increase in reaction temperature after the condensation reaction or after the first rearrangement step.

摘要翻译： 描述了在酸催化剂存在下苯胺与甲醛的缩合反应生产二苯基甲烷系多胺的方法，反应完成后酸催化剂的中和，所得多胺混合物的蒸馏。 该方法的关键特征是在缩合反应之后或第一重排步骤之后的反应温度急剧增加。