公开(公告)号：US5200163A

公开(公告)日：1993-04-06

申请号：US785288

申请日：1991-10-30

申请人： Jochem Henkelmann ,  Thomas M. Kahl ,  Irene Troetsch-Schaller ,  Leopold Hupfer ,  Wolfgang Franzischka ,  Wolfgang Schwarz

发明人： Jochem Henkelmann ,  Thomas M. Kahl ,  Irene Troetsch-Schaller ,  Leopold Hupfer ,  Wolfgang Franzischka ,  Wolfgang Schwarz

IPC分类号： B01D53/70

CPC分类号： B01D53/70

摘要： To remove phosgene from off-gases, the former is reacted in a washing zone with a liquid which contains or is composed of compounds of the formula ##STR1## where R.sub.1 and R.sub.2 are identical or different and are each aliphatic or cycloaliphatic alkyl of 1 to 8 carbons, or R.sub.1 and R.sub.2 are --(CH.sub.2).sub.n -- where n is 4 or 5, R.sub.3 is hydrogen or aliphatic or cycloaliphatic alkyl of 1 to 6 carbon atoms, or R.sub.1 or R.sub.2 and R.sub.3 are --(CH.sub.2).sub.m -- where m is 3, 4 or 5.The liquid can be regenerated by the addition of water, and the regenerated liquid can be returned to the washing zone.

摘要翻译： 为了从废气中除去光气，前者在洗涤区与液体反应，该液体含有或由式（Ⅰ）的化合物组成，其中R 1和R 2相同或不同，并且各自为脂族或脂环族烷基， 8个碳，或者R1和R2是 - （CH2）n-，其中n是4或5，R3是氢或1到6个碳原子的脂族或脂环族烷基，或者R1或R2和R3是 - （CH2）m-，其中 m为3,4或5.液体可以通过加水再生，再生液体可以返回到洗涤区。

公开(公告)号：US5200560A

公开(公告)日：1993-04-06

申请号：US908439

申请日：1992-06-30

申请人： Thomas M. Kahl ,  Jochem Henkelmann ,  Leopold Hupfer ,  Wolfgang Franzischka ,  Wolfgang Schwarz

发明人： Thomas M. Kahl ,  Jochem Henkelmann ,  Leopold Hupfer ,  Wolfgang Franzischka ,  Wolfgang Schwarz

IPC分类号： C07C51/60

CPC分类号： C07C51/60

摘要： A process for the preparation of a carboxylic chloride of the general formula I ##STR1## in which R denotes C.sub.1 -C.sub.30 -alkyl, C.sub.2 -C.sub.30 -alkenyl or C.sub.2 -C.sub.30 -alkynyl, from a carboxylic acid of the general formula II ##STR2## in which R has the meanings stated, and phosgene COCl.sub.2 (III), in the presence of a catalyst adduct comprising phosgene and N,N-disubstituted formamide of the general formula IV ##STR3## in which R.sup.1 and R.sup.2 are independently C.sub.1 -C.sub.3 -alkyl or R.sup.1 and R.sup.2 together form a C.sub.4 - or C.sub.5 -alkylene chain which may or may not be interrupted by an oxygen atom or by a nitrogen atom carrying a C.sub.1 -C.sub.3 -alkyl group or CHO, the product being isolated by phase separation, wherein the amount of phosgene added to the formamide (IV) is from 20 to 70% molar, based on the formamide.

摘要翻译： 由通式I（I）表示的羧酸的制备方法，其中R表示C 1 -C 30 - 烷基，C 2 -C 30 - 烯基或C 2 -C 30炔基，由通式 （II）其中R具有所述的含义，和光气COCl 2（III），在包含光气和N，N-二取代的通式IV（IV）的甲酰胺的催化剂加合物的存在下，在 其中R 1和R 2独立地是C 1 -C 3 - 烷基或R 1和R 2一起形成C4-或C5-亚烷基链，其可以被氧原子或可以不被氧原子中断或可以被携带C1-C3-烷基的氮原子或 CHO，通过相分离分离产物，其中加甲酰胺（IV）中的光气的量为甲酰胺为20-70％摩尔。