公开(公告)号：US5543490A

公开(公告)日：1996-08-06

申请号：US168847

申请日：1993-12-17

申请人： Torsten Groth ,  Winfried Joentgen ,  Hans W. Linden ,  Nikolaus Muller ,  Heinz-Joachim Rother ,  Paul Wagner ,  Martin Kugler

发明人： Torsten Groth ,  Winfried Joentgen ,  Hans W. Linden ,  Nikolaus Muller ,  Heinz-Joachim Rother ,  Paul Wagner ,  Martin Kugler

IPC分类号： A01N37/46 ,  B01F17/00 ,  B01F17/52 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C05C11/00 ,  C05G3/00 ,  C08G69/00 ,  C08G69/10 ,  C08G73/10 ,  C09K15/20 ,  C11D3/37 ,  C23F11/14 ,  C23F11/173

CPC分类号： C08G69/10 ,  A01N37/46 ,  B01F17/0021 ,  B01F17/005 ,  C08G73/1092 ,  C09K15/20 ,  C11D3/3719 ,  C23F11/173

摘要： Polyaspartic acid is prepared by reacting maleic anhydride and ammonia to give maleamic acid, polymerizing the maleamic acid and subsequently hydrolyzing the product to give polyaspartic acid or a salt thereof.

摘要翻译： 聚天冬氨酸通过马来酸酐和氨反应制备得到马来酰胺酸，聚合马来酰胺酸，随后水解产物得到聚天冬氨酸或其盐。

公开(公告)号：US4338261A

公开(公告)日：1982-07-06

申请号：US247416

申请日：1981-03-25

申请人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden ,  Werner Mentzel

发明人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden ,  Werner Mentzel

IPC分类号： C07C309/47 ,  C07C67/00 ,  C07C301/00 ,  C07C303/06 ,  C07C143/60

CPC分类号： C07C303/06

摘要： Improved process for the preparation of 1-naphthylamine-4,6-disulphonic acid wherein the sulphonation of the 1-naphthylamine-6-sulphonic acid is carried out by adding the oleum at a temperature of 10.degree. to 70.degree. C., either to initially introduce sulphuric acid simultaneously with the 1-naphthylamine-6-sulphonic acid or to 1-naphthylamine-6-sulphonic acid, which is dissolved or suspended in sulphuric acid, and by using such a molar ratio of sulphur trioxide to 1-naphthylamine-6-sulphonic acid that 1.2 to 3 mols of sulphur trioxide are present per mol of 1-naphthylamine-6-sulphonic acid. The sulphonation mixture formed in the preparation can be sulphonated in a second sulphonation stage to 1-naphthylamine-2,4,6-trisulphonic acid.

摘要翻译： 制备1-萘胺-4,6-二磺酸的改进方法，其中1-萘胺-6-磺酸的磺化是通过在10℃至70℃的温度下加入发烟硫酸来进行的， 最初与1-萘胺-6-磺酸或溶解或悬浮在硫酸中的1-萘胺-6-磺酸同时引入硫酸，并且通过使用三氧化硫与1-萘胺-6-磺酸的摩尔比， 6-磺酸，每摩尔1-萘胺-6-磺酸存在1.2〜3摩尔三氧化硫。 在制备中形成的磺化混合物可以在第二个磺化阶段中磺化成1-萘胺-2,4,6-三磺酸。

公开(公告)号：US4407762A

公开(公告)日：1983-10-04

申请号：US410746

申请日：1982-08-23

申请人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden ,  Werner Mentzel

发明人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden ,  Werner Mentzel

IPC分类号： C07C309/47 ,  C07C67/00 ,  C07C301/00 ,  C07C303/44 ,  C07C143/60

CPC分类号： C07C303/44

摘要： Process for the isolation of 1-naphthylamine-4,8-disulphonic acid from sulphonation mixtures containing it according to which process the sulphonation mixture is introduced into preheated water in such a manner that, at the start of crystallization, a temperature of at least 100.degree. C. is reached and the 1-naphthylamine-4,8-disulphonic acid is separated from the mother liquor at a temperature not higher than 70.degree. C. The process is applied particularly advantageously for the isolation of 1-naphthylamine-4,8-disulphonic acid from sulphonation mixtures which have been obtained by introducing in turns alkali metal sulphate, 1-naphthylamine-8-sulphonic acid and SO.sub.3 into sulphuric acid which has been introduced initially, a total of 1.5 to 3 mols of SO.sub.3 and 0.6 to 1.5 mols of alkali metal sulphate being employed per mol of 1-naphthylamine-8-sulphonic acid.

摘要翻译： 从含有它的磺化混合物中分离出1-萘胺-4,8-​​二磺酸的方法，根据该方法，将磺化混合物引入预热的水中，使得在结晶开始时，温度至少为100 达到C，并且在不高于70℃的温度下将1-萘胺-4,8-​​二磺酸与母液分离。该方法特别有利地用于分离1-萘胺-4,8 来自磺化混合物的二磺酸通过将碱金属硫酸盐，1-萘胺-8-磺酸和SO 3引入到最初引入的硫酸中，总共含有1.5至3摩尔的SO 3和0.6至1.5 每摩尔1-萘胺-8-磺酸使用碱金属硫酸盐的摩尔数。

公开(公告)号：US4348336A

公开(公告)日：1982-09-07

申请号：US247414

申请日：1981-03-25

申请人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden

发明人： Heinz U. Blank ,  Horst Behre ,  Hans W. Linden

IPC分类号： C07C309/47 ,  C07C67/00 ,  C07C301/00 ,  C07C303/06 ,  C07C143/60

CPC分类号： C07C303/06

摘要： Process for the isolation of 1-naphthylamine-4,6- or 1-naphthylamine-4,7-disulphonic acid from sulphonation mixtures obtained in the sulphonation of 1-naphthylamine-6- or 1-naphthylamine-7-sulphonic acid with sulphuric acid and sulphur trioxide, wherein the aqueous solutions or suspensions formed, when the sulphonation mixtures are introduced into water, are warmed to 80.degree. to 120.degree. C., optionally kept for a period of time at this temperature, are then cooled to temperatures below 70.degree. C., and the 1-naphthylamine-4,6- or 1-naphthylamine-4,7-disulphonic acid which has crystallized out is finally filtered off.

摘要翻译： 从1-萘胺-6-或1-萘胺-7-磺酸与硫酸磺化得到的磺化混合物中分离1-萘胺-4,6-或1-萘胺-4,7-二磺酸的方法 和三氧化硫，其中当将磺化混合物引入水中时形成的水溶液或悬浮液被加热至80℃至120℃，任选地在该温度下保持一段时间，然后冷却至低于70℃ 并结晶出的1-萘胺-4,6-或1-萘胺-4,7-二磺酸终于被滤出。