公开(公告)号：DE3525749A1

公开(公告)日：1987-01-29

申请号：DE3525749

申请日：1985-07-19

Applicant: BASF AG

Inventor： OEHSEN UBBO VON DR ,  STECHER KARLHEINZ DR ,  KOEHLER WALDEMAR DR ,  MUELLER BERTHOLD DR ,  BRUNNMUELLER FRITZ DR ,  SCHNEIDER ROLF DR

IPC: B01J21/12 ,  B01J23/86 ,  C01C3/02

Abstract: A process for the thermolytic cleavage of formamide to give hydrocyanic acid and water over alumina or alumina/silica moldings subjected to final sintering or over high temperature corrosion-resistant stainless steel packings in the presence of atmospheric oxygen possesses, in particular, high HCN selectively and a high formamide conversion.

公开(公告)号：DE3562371D1

公开(公告)日：1988-06-01

申请号：DE3562371

申请日：1985-11-21

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ DR ,  STECHER KARLHEINZ DR ,  KROENER MICHAEL DR ,  SCHNEIDER ROLF DR

IPC: C07C255/16 ,  C01C3/00 ,  C01C3/02 ,  C01C3/04 ,  C01C3/10 ,  C07C67/00 ,  C07C211/10 ,  C07C253/00 ,  C07C253/08 ,  C07C255/19 ,  C07C255/24 ,  C07C255/29 ,  C07C121/36 ,  C07C121/43 ,  C07C120/00

Abstract: Reaction products of hydrogen cyanide are prepared by a process in which hydrogen cyanide prepared in a conventional manner by pyrolysis at from 250 DEG to 650 DEG C. over a solid under from 5 to 200 mbar is cooled to a temperature of from 200 DEG to -10 DEG C. together with the other pyrolysis products, the hydrogen cyanide is then fed to a chemisorption reaction with a base or with a carbonyl compound, and the reaction products of hydrogen cyanide which are formed therein are removed from the system and brought to atmospheric pressure. In this process, the handling of large amounts of hydrogen cyanide is avoided.

公开(公告)号：DE3443462A1

公开(公告)日：1986-05-28

申请号：DE3443462

申请日：1984-11-29

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ DR ,  STECHER KARLHEINZ DR ,  KROENER MICHAEL DR ,  SCHNEIDER ROLF DR

IPC: C07C255/16 ,  C01C3/00 ,  C01C3/02 ,  C01C3/04 ,  C01C3/10 ,  C07C67/00 ,  C07C211/10 ,  C07C253/00 ,  C07C253/08 ,  C07C255/19 ,  C07C255/24 ,  C07C255/29 ,  C07C120/00 ,  C07C121/34 ,  C07C121/36

Abstract: Reaction products of hydrogen cyanide are prepared by a process in which hydrogen cyanide prepared in a conventional manner by pyrolysis at from 250 DEG to 650 DEG C. over a solid under from 5 to 200 mbar is cooled to a temperature of from 200 DEG to -10 DEG C. together with the other pyrolysis products, the hydrogen cyanide is then fed to a chemisorption reaction with a base or with a carbonyl compound, and the reaction products of hydrogen cyanide which are formed therein are removed from the system and brought to atmospheric pressure. In this process, the handling of large amounts of hydrogen cyanide is avoided.

公开(公告)号：DE3684372D1

公开(公告)日：1992-04-23

申请号：DE3684372

申请日：1986-07-07

Applicant: BASF AG

Inventor： VON OEHSEN UBBO DR ,  STECHER KARLHEINZ DR ,  KOEHLER WALDEMAR DR ,  MUELLER BERTHOLD DR ,  BRUNNMUELLER FRITZ DR ,  SCHNEIDER ROLF DR

IPC: B01J21/12 ,  B01J23/86 ,  C01C3/02

Abstract: Thermolytic cracking of formamide (I) to HCN and H2O is carried out by introducing superheated (I) gas at 300-480 deg.C under reduced pressure of 1-350 mbar and with 0.1-10 vol.% air into a reactor with a nest of tubes and passing at 450-590 deg.C and an average dwell time of 0.01-0.25 s over highly sintered mouldings, consisting of 50-100 wt.% Al2O3 and 50-0 wt. % SiO2 or over Cr-Ni stainless steel mouldings, which are resistant to high temp. corrosion. (I) is introduced at 300-400 deg.C and 50-150 mbar with 1.0-3.0 vol.% air; and cracked at 500-540 deg.C witha dwell time of 0.01-0.15 s.. The mouldings consist of 85-95 wt.% Al2O3 and 15-5 wt.% SiO2; or of 18-21 wt.% Cr, 9-13 wt.% Ni, 0-3 wt.% and the rest Fe.

公开(公告)号：AT33826T

公开(公告)日：1988-05-15

申请号：AT85114756

申请日：1985-11-21

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ DR ,  STECHER KARLHEINZ DR ,  KROENER MICHAEL DR ,  SCHNEIDER ROLF DR

IPC: C07C255/16 ,  C01C3/00 ,  C01C3/02 ,  C01C3/04 ,  C01C3/10 ,  C07C67/00 ,  C07C211/10 ,  C07C253/00 ,  C07C253/08 ,  C07C255/19 ,  C07C255/24 ,  C07C255/29 ,  C07C121/36 ,  C07C121/43 ,  C07C120/00

公开(公告)号：CH542443A

公开(公告)日：1973-09-30

申请号：CH1042570

申请日：1970-07-09

Applicant: BASF AG

Inventor： KAISER RUDOLF DR ,  OETTINGER WILLI DR ,  STECHER KARLHEINZ DR

IPC: C01B31/08 ,  G01N31/08

公开(公告)号：DE2040503A1

公开(公告)日：1972-02-17

申请号：DE2040503

申请日：1970-08-14

Applicant: BASF AG

Inventor： DISTLER HARRY DR ,  STECHER KARLHEINZ DR

IPC: C07D327/10

Abstract: sulphates of formula: where the R's may be the same C5-6-cycloalkyl, C7-12 aralkyl, Ph or COOH opt. substd. with non-reacting groups e.g. alkyl or alkoxy, are prepd. by reaction of 1,2-alkylene oxides with SO2 (liquid), then with SO3 at -72 degrees to -10 degrees and distilling off excess SO2. Mixtures of SO2 and SO3 may be used and the process may be made continuous. The products have uses as intermediates for washing agents, textile auxiliaries, pesticides, emulsifying and dispersing agents, flotation auxiliaries; and in the prepn. of sulphobetaines.