公开(公告)号：CH606349A5

公开(公告)日：1978-10-31

申请号：CH591777

申请日：1977-05-11

Applicant: HOECHST AG

Inventor： HOYER ERNST DR ,  STEUERNAGEL HANS HELMUT DR ,  WAGNER DIETER DR

IPC: C09B43/24 ,  C09B62/503 ,  C09B62/70

Abstract: Improved process for the sulfatation of the hydroxy group of a beta -hydroxy-ethylsulfonyl group present in compounds selected from the dyestuff class which comprises carrying out the reaction in a machine operating with a kneading action and effect and with the use of only 1 to 5 times the equimolar amount of a concentrated sulfuric acid, of oleum or sulfur dioxide itself. The beta -sulfatoethylsulfonyl group containing dyestuffs, thus prepared have a high purity and are obtained in a high yield and esterification rate. Above all, the novel process is distinguished by a highly reduced salt and acid content of the waste water.

公开(公告)号：DE2716478A1

公开(公告)日：1978-10-26

申请号：DE2716478

申请日：1977-04-14

Applicant: HOECHST AG

Inventor： NOELTNER GERHARD ,  POHLMANN HEINRICH DR ,  RITTER EBERHARD DR ,  WAGNER DIETER DR

IPC: C09B67/02 ,  C09B67/00 ,  C09B67/08

公开(公告)号：CH513880A

公开(公告)日：1971-10-15

申请号：CH849969

申请日：1969-06-04

Applicant: HOECHST AG

Inventor： WAGNER DIETER DR

IPC: C09B57/12 ,  C07D49/38

公开(公告)号：CH633031A5

公开(公告)日：1982-11-15

申请号：CH388278

申请日：1978-04-11

Applicant: HOECHST AG

Inventor： NOELTNER GERHARD ,  POHLMANN HEINRICH DR ,  RITTER EBERHARD DR ,  WAGNER DIETER DR

IPC: C09B67/02 ,  C09B67/00 ,  C09B67/08

公开(公告)号：CH433548A

公开(公告)日：1967-04-15

申请号：CH968363

申请日：1963-08-05

Applicant: HOECHST AG

Inventor： DIETZ ERICH DR ,  FUCHS OTTO DR ,  SCHINZEL ERICH DR ,  WAGNER DIETER DR

IPC: C08K5/20 ,  C09B5/26

公开(公告)号：CH434528A

公开(公告)日：1967-04-30

申请号：CH968263

申请日：1963-08-05

Applicant: HOECHST AG

Inventor： DIETZ ERICH DR ,  FUCHS OTTO DR ,  SCHINZEL ERICH DR ,  WAGNER DIETER DR

IPC: C08K5/20 ,  C09B5/26 ,  C09B6/00 ,  C09B5/28