公开(公告)号：DE1643238A1

公开(公告)日：1972-02-24

申请号：DE1643238

申请日：1967-08-16

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  KOEHLER WALDEMAR DR ,  SCHULZ GERHARD DR

Abstract: Continuous production of alkali metal salts of nitrilotriacetic acid from an alkali metal cyanide, formaldehyde and ammonia by reaction of the components in at least two stages, the alkali metal cyanide being reacted with formaldehyde in stoichiometric or substantially stoichiometric ratio at temperatures of 50 DEG to 200 DEG and pressures of from atmospheric pressure to 50 atmospheres gauge in the presence of an excess of ammonia in the first stage and (while simultaneously removing ammonia) further amounts of alkali metal cyanide and formaldehyde being allowed to act at temperatures of 60 DEG to 110 DEG C in one or more subsequent stages, 5 to 35 mole percent of the total amount of alkali metal cyanide required being replaced by free hydrocyanic acid and/or hydroxyacetonitrile.

公开(公告)号：CH501591A

公开(公告)日：1971-01-15

申请号：CH1193569

申请日：1969-08-06

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  SCHULZ GERHARD DR ,  KOEHLER WALDEMAR DR

IPC: C07C101/20

公开(公告)号：DE1643232A1

公开(公告)日：1971-05-27

申请号：DE1643232

申请日：1967-07-12

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  KOEHLER WALDEMAR DR ,  SCHULZ GERHARD DR

IPC: C07C20060101 ,  C07C

公开(公告)号：CH502306A

公开(公告)日：1971-01-31

申请号：CH1147268

申请日：1968-07-31

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  KOEHLER WALDEMAR DR ,  SCHULZ GERHARD DR

IPC: C07C263/02 ,  C07C263/10 ,  C07C265/04 ,  C07C101/20

公开(公告)号：DE1793227A1

公开(公告)日：1972-03-09

申请号：DE1793227

申请日：1968-08-17

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  SCHULZ GERHARD DR ,  KOEHLER WALDEMAR DR

IPC: C07C101/20

公开(公告)号：CH374988A

公开(公告)日：1964-02-15

申请号：CH7731159

申请日：1959-08-24

Applicant: BASF AG

Inventor： BAUR KARL DR ,  SCHWETER WALTER DR ,  SCHLOEDER HANS DR ,  VON KUTEPOW NIKOLAUS DR ,  BERDING CHRISTOPH DR

IPC: B01J31/22 ,  C07F15/04

公开(公告)号：CH491860A

公开(公告)日：1970-06-15

申请号：CH1034268

申请日：1968-07-11

Applicant: BASF AG

Inventor： BERDING CHRISTOPH DR ,  GUENTHERT PAUL DR ,  KOEHLER WALDEMAR DR ,  SCHULZ GERHARD DR

IPC: C07C20060101 ,  C07C101/20