公开(公告)号：IN169199B

公开(公告)日：1991-09-14

申请号：IN40MA1987

申请日：1987-01-21

Applicant: HOECHST AG

Inventor： GUNTHER SCHIMMEL ,  FRIEDRICH KOLKMANN ,  REINHARD GRADL ,  HERBERT RESSEL

IPC: C01B25/222 ,  C01B25/01 ,  C01B25/22 ,  C01B25/223

公开(公告)号：ZA918701B

公开(公告)日：1992-08-26

申请号：ZA918701

申请日：1991-11-01

Applicant: HOECHST AG

Inventor： ERPENBACH HEINZ ,  HEINZ ERPENBACH ,  GRADL REINHARD ,  REINHARD GRADL ,  JAEGERS ERHARD ,  ERHARD JAEGERS ,  SEIDEL ANDREAS ,  ANDREAS SEIDEL

IPC: B01J31/02 ,  B01J31/18 ,  B01J31/30 ,  C07B61/00 ,  C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12 ,  C07C

Abstract: A continuous process for the simultaneous preparation of acetic acid and acetic anhydride from a starting mixture of methanol and methyl acetate and, if appropriate, dimethyl ether, by reaction with carbon monoxide under anhydrous conditions at temperatures from 150 to 250 DEG C and under increased pressure in a reaction zone using a dissolved catalyst system containing a nickel compound, methyl iodide as promoter, at least one co-promoter such as alkali metal iodide, quaternary phosphonium iodide or quaternary ammonium iodide, and a cocatalyst, is characterised in that the cocatalyst used is a rhodium or iridium compound in a molar ratio of nickel : cocatalyst of 1 : (0.005 to 0.1), a nickel concentration of 0.01 to 0.1, preferably 0.015 to 0.06 mol/l is established in the reaction zone, and is carried out under an increased pressure of 30 to 100 bar.

公开(公告)号：ZA9107509B

公开(公告)日：1992-06-24

申请号：ZA9107509

申请日：1991-09-20

Applicant: HOECHST AG

Inventor： ERPENBACH HEINZ ,  HEINZ ERPENBACH ,  GRADL REINHARD ,  REINHARD GRADL ,  JAEGERS ERHARD ,  ERHARD JAEGERS ,  SEIDEL ANDREAS ,  ANDREAS SEIDEL

IPC: B01J27/128 ,  B01J31/12 ,  C07B61/00 ,  C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12 ,  C07C ,  B01J

CPC classification number: C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12

公开(公告)号：PH20977A

公开(公告)日：1987-06-18

申请号：PH30945

申请日：1984-07-09

Applicant: HOECHST AG

Inventor： GUNTHER SCHIMMEL ,  GERO HEYMER ,  REINHARD GRADL

IPC: C01B25/234 ,  C01B25/235 ,  C01B25/237 ,  C01B25/46 ,  C01B25/22

公开(公告)号：PH21066A

公开(公告)日：1987-07-10

申请号：PH30835

申请日：1984-06-18

Applicant: HOECHST AG

Inventor： GUNTHER SCHIMMEL ,  HERBERT RESSEL ,  GERO HEYMER ,  REINHARD GRADL

IPC: C01B25/237 ,  C01B25/30 ,  C01B25/10

Abstract: The disclosure relates to a process for defluorinating alkali metal phosphate solutions. To this end, the disclosure provides for an alkali metal phosphate solution neutralized to a pH-value of more than 6 and pre-purified to be stirred at 60 DEG to 120 DEG C. into an alkaline earth metal compound. Alkaline earth metal compounds with a solubility in water of less than 5 g/l are used in the form of particles of which more than 50% have a size of less than 8 mu m. After a reaction period of 0.5 to 4 hours, the precipitate obtained is separated from the purified alkali metal phosphate solution.

公开(公告)号：PH20981A

公开(公告)日：1987-06-18

申请号：PH32040

申请日：1985-03-25

Applicant: HOECHST AG

Inventor： REINHARD GRADL ,  GERO HEYMER

IPC: C01B25/46 ,  C01B25/30

Abstract: An aqueous alkali phosphate solution is made. An organic phase is countercurrently mixed with an aqueous phase, the two phases being used in a volume ratio larger than 1:1 and formed aqueous alkali phosphate solution is separated from the remaining organic phase. The two phases are mixed and reacted in a reaction zone comprised of a mixing and separating zone. The organic phase is continuously dispersed in the aqueous phase. A volume excess of aqueous phase is maintained in the mixing zone and the two phases are used in an overall quantity sufficient to provide a volume ratio of organic to aqueous phase of 4:6 to 2:8.

公开(公告)号：ZA913258B

公开(公告)日：1992-01-29

申请号：ZA913258

申请日：1991-04-30

Applicant: HOECHST AG

Inventor： ERPENBACH HEINZ ,  HEINZ ERPENBACH ,  GRADL REINHARD ,  REINHARD GRADL ,  JAEGERS ERHARD ,  ERHARD JAEGERS ,  SEIDEL ANDREAS ,  ANDREAS SEIDEL ,  WEFERLING NORBERT ,  NORBERT WEFERLING

IPC: C07F9/54 ,  C07F

公开(公告)号：ZA9103258B

公开(公告)日：1992-01-29

申请号：ZA9103258

申请日：1991-04-30

Applicant: HOECHST AG

Inventor： ERPENBACH HEINZ ,  HEINZ ERPENBACH ,  GRADL REINHARD ,  REINHARD GRADL ,  JAEGERS ERHARD ,  ERHARD JAEGERS ,  SEIDEL ANDREAS ,  ANDREAS SEIDEL ,  WEFERLING NORBERT ,  NORBERT WEFERLING

IPC: C07F9/54 ,  C07F

CPC classification number: C07F9/5407

公开(公告)号：ZA9102645B

公开(公告)日：1992-01-29

申请号：ZA9102645

申请日：1991-04-10

Applicant: HOECHST AG

Inventor： SCHIMMEL GUENTHER ,  GUENTHER SCHIMMEL ,  STAFFEL THOMAS ,  THOMAS STAFFEL ,  GRADL REINHARD ,  REINHARD GRADL

IPC: C01B25/30 ,  C01B

CPC classification number: C01B25/308

公开(公告)号：ZA9108701B

公开(公告)日：1992-08-26

申请号：ZA9108701

申请日：1991-11-01

Applicant: HOECHST AG

Inventor： ERPENBACH HEINZ ,  HEINZ ERPENBACH ,  GRADL REINHARD ,  REINHARD GRADL ,  JAEGERS ERHARD ,  ERHARD JAEGERS ,  SEIDEL ANDREAS ,  ANDREAS SEIDEL

IPC: B01J31/02 ,  B01J31/18 ,  B01J31/30 ,  C07B61/00 ,  C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12 ,  C07C

CPC classification number: C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12