公开(公告)号：DE2553461A1

公开(公告)日：1977-06-08

申请号：DE2553461

申请日：1975-11-28

Applicant: BASF AG

Inventor： KERSTEN SIEGFRIED DIPL CHEM DR ,  HAMPRECHT GERHARD DIPL CHEM DR

IPC: C07C307/00 ,  C07C20060101 ,  C07C67/00 ,  C07C301/00 ,  C07C303/00 ,  C07C307/06 ,  C07C143/86

Abstract: New sulfamic acid halides and a process for the manufacture of sulfamic acid halides by reacting sulfamic acids with aldehydes and acid halides. The products are starting materials for the manufacture of crop protection agents, dyes and pharmaceuticals.

公开(公告)号：DE3227931A1

公开(公告)日：1984-02-09

申请号：DE3227931

申请日：1982-07-27

Applicant: BASF AG

Inventor： REISSENWEBER GERNOT DIPL CHEM ,  KERSTEN SIEGFRIED DIPL CHEM DR ,  JACOBS PETER DIPL CHEM DR ,  DITTER WALTER

IPC: C07C125/067

Abstract: Pyrocatechol methylcarbamate is prepared by reacting pyrocatechol carbonate with methylamine in the presence of a tertiary amine and, preferably, a solvent.

公开(公告)号：DE2527828A1

公开(公告)日：1977-01-13

申请号：DE2527828

申请日：1975-06-23

Applicant: BASF AG

Inventor： KERSTEN SIEGFRIED DIPL CHEM DR

IPC: C07C271/02 ,  C07C125/03

Abstract: Prodn. of N-alkylcarbamoyl chlorides (I) of the formula R23NR1-CO-Cl (in which R1 is -CR3=CR32 or -CH2Cl; and R2 and R3 gps. independently are H or a 1-8C aliphatic gp.) comprises the reaction of a monomeric Schiff's base (II) of formula R23C-N=R4 (in which R4 is =CH2 or =CR3CH32) with COCl2 in the gas phase at 110-300 degrees C. (I) are valuable starting materials for the prodn. of lacquer raw materials, plastics, paints and plant protective agents. The process is simpler and more economical than usual and a large number of (I) can be produced in good yield and purity. (II) can also be in the gas phase and no solvents or amines are necessary. In an example, 500 (wt.)pts./h trimerised N-methyl-ethylidene-imine were depolymerised and passed with 1000 pts./h COCl2 through a tube at 170 degrees C. 2376 pts. (60%) N-methyl-N-vinyl-carbamoyl chloride, b.pt. 60 degrees C/23 torr, were recovered from the prod.

公开(公告)号：DE2512514A1

公开(公告)日：1976-10-07

申请号：DE2512514

申请日：1975-03-21

Applicant: BASF AG

Inventor： KOENIG KARL-HEINZ DIPL CHEM DR ,  KERSTEN SIEGFRIED DIPL CHEM DR ,  REITEL CHRISTIAN DIPL CHEM DR

IPC: C07C265/02 ,  C07C20060101 ,  C07C67/00 ,  C07C241/00 ,  C07C263/04 ,  C07C265/04 ,  C07C119/042

Abstract: Aliphatic isocyanates are produced by thermal decomposition of the corresponding beta -naphthyl carbamates.