公开(公告)号：BR7802311A

公开(公告)日：1978-11-28

申请号：BR7802311

申请日：1978-04-13

Applicant: HOECHST AG

Inventor： RITTER E ,  NOLTNER G ,  POHLMANN H ,  WAGNER D

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

公开(公告)号：IN148409B

公开(公告)日：1981-02-14

申请号：IN381CA1978

申请日：1978-04-07

Applicant: HOECHST AG

Inventor： NOLTNER G ,  RITTER E ,  POHLMANN H ,  WAGNER D

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

公开(公告)号：IN148322B

公开(公告)日：1981-01-17

申请号：IN1151CA1977

申请日：1977-07-27

Applicant: HOECHST AG

Inventor： STEUERNAGEL H H ,  HOYER E ,  WAGNER D

IPC: C09B45/00 ,  C07C141/00

公开(公告)号：AU508771B2

公开(公告)日：1980-04-03

申请号：AU2754577

申请日：1977-08-02

Applicant: HOECHST AG

Inventor： HOYER E ,  STEUERNAGEL H H ,  WAGNER D

IPC: C09B43/24 ,  C09B62/503 ,  C09B29/28 ,  C09B29/12 ,  C09B31/02 ,  C09B1/02 ,  C09B45/18 ,  C09B47/04

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：BR7705098A

公开(公告)日：1978-04-04

申请号：BR7705098

申请日：1977-08-03

Applicant: HOECHST AG

Inventor： WAGNER D ,  HOYER E ,  STEUERNAGEL H

IPC: C09B43/24 ,  C09B62/503 ,  C09B62/72

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：BR6910341D0

公开(公告)日：1973-04-19

申请号：BR21034169

申请日：1969-07-01

Applicant: HOECHST AG

Inventor： WAGNER D