公开(公告)号：US3838068A

公开(公告)日：1974-09-24

申请号：US21915372

申请日：1972-01-19

申请人： BAYER AG

发明人： SCHERHAG B ,  HAUSWEITER A ,  HAGEDORN F ,  WEDEMEYER K

IPC分类号： B01J23/18 ,  B01J23/28 ,  B01J23/31 ,  B01J23/835 ,  B01J27/18 ,  B01J11/82

CPC分类号： B01J23/835 ,  B01J23/18 ,  B01J23/28 ,  B01J23/31 ,  B01J27/18

摘要： AN ACTIVATED TIN PHOSPHATE CATALYST IS PREPARED BY REACTING A TIN COMPOUND WITH A PHOSPHORIC ACID AND ACTIVATING THE TIN PHOSPHATE FORMED BY ADDING THERETO ONE OR MORE COMPOUNDS OF METALS FROM THE GROUP OF MOLYBDENUM, BISMUTH, VANADIUM, IRON AND COBALT AND THEREAFTER HEATING THE RESULTING MASS. THE TIN PHOSPHATE CATALYST CONTAINS IN THE RANGE OF 10 TO 30 PARTS BY WEIGHT OF PHOSPHORUS AND IN THE RANGE OF 30 TO 50 PARTS BY WEIGHT OF TIN PER 100 PARTS BY WEIGHT OF TIN PHOSPHATE. THE ACTIVATED TIN PHOSPHATE CATALYST CONTAINS FROM 1 TO 10% BY WEIGHT OF THE ACTIVATING METALS BASED ON THE WEIGHT OF THE TIN PHOSPHATE.

公开(公告)号：US3842098A

公开(公告)日：1974-10-15

申请号：US32311873

申请日：1973-01-12

申请人： BAYER AG

发明人： SCHERHAG B ,  WOLZ H ,  FRANCQUE M

IPC分类号： C07D235/28 ,  C07D49/38

CPC分类号： C07D235/28

摘要： 1. A PROCESS FOR PRODUCING HIGH PURITY 2-MERCAPTOBENZIMIDAZOLE WHICH COMPRISES REACTING O-PHENYLENE DIAMIE WITH CARBON DISULFIDE IN BENZOTHIAZOLE OR IN ALKYLBENZOTHIAZOLE HAVING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL MOIETY, EXTRACTING RESULTING 2-MERCAPTOBENZIMIDAZOLE CONTAINING SOLUTION WIWITH DILUTE AQUEOUS ALKALI METAL HYDROXIDE SOLUTION, PRECIPITATING EXTRACTED 2-MERCAPTOBENZIMIDTHIAZOLE FROM RESULTING AQUEOUS ALKALI METAL HYDROXIDE SOLUTION CONTAINING THE SAME BY ACIDIFICATION AND RECOVERING PRECIPITATED 2-MERCAPTOBENZIMIDAZOLE.

公开(公告)号：US3770759A

公开(公告)日：1973-11-06

申请号：US3770759D

申请日：1970-08-05

申请人： BAYER AG

发明人： VON FRIEDRICH A ,  SCHERHAG B ,  WOLZ H

IPC分类号： C07D277/72 ,  C07D91/48

CPC分类号： C07D277/72

摘要： RECOVERING HIGH PURITY PRODUCT IN HIGH YIELD FROM A CRUDE MELT OF ANILINE, SULPHUR AND CARBON DISULPHIDE BY DISSOLVING THE HOT MELT IN A SOLVENT, EXTRACTING RESULTING SOLUTION WITH DILUTE AQUEOUS ALKALI METAL HYDROXIDE AND PRECIPITATION OF PRODUCT BY ACIDIFICATION.