EP 0000602 B1 19810722 - PROCESS FOR THE PREPARATION OF ISOCYANATES FROM FORMAMIDES
Title (en)
PROCESS FOR THE PREPARATION OF ISOCYANATES FROM FORMAMIDES
Publication
Application
Priority
NL 7708510 A 19770802
Abstract (en)
[origin: EP0000602A1] Process for preparing isocyanates from formamides wherein a formamide corresponding to the formula R (NHCHO)n, where R is an organic group and n is 1 or 2, is oxidized with an oxygen containing gas at a temperature in the range of 300 DEG C to 600 DEG C in the presence of a catalytic amount of copper and/or one or more metals of the Groups IB and VIII of the 5th and 6th period of the Periodic System of Elements to yield the corresponding isocyanate R(NCO)n where R and n have the same meaning as above, and the resultant gaseous isocyanate containing reaction mixture is subjected to a separation process to separate the product isocyanate from water of reaction.
IPC 1-7
IPC 8 full level
B01J 23/00 (2006.01); C07B 61/00 (2006.01); B01J 23/38 (2006.01); B01J 23/72 (2006.01); C07C 67/00 (2006.01); C07C 241/00 (2006.01); C07C 263/00 (2006.01); C07C 263/12 (2006.01); C07C 265/00 (2006.01); C07C 265/12 (2006.01)
CPC (source: EP US)
B01J 23/38 (2013.01 - EP US); B01J 23/72 (2013.01 - EP US); C07C 263/00 (2013.01 - EP US); C07C 263/20 (2013.01 - EP US); C07C 2601/14 (2017.05 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE CH DE FR GB NL SE
DOCDB simple family (publication)
EP 0000602 A1 19790207; EP 0000602 B1 19810722; CA 1117962 A 19820209; DE 2860856 D1 19811029; IT 1097592 B 19850831; IT 7826324 A0 19780731; JP H0118067 B2 19890403; JP S5439018 A 19790324; US 4207251 A 19800610
DOCDB simple family (application)
EP 78200097 A 19780714; CA 308524 A 19780801; DE 2860856 T 19780714; IT 2632478 A 19780731; JP 9444978 A 19780802; US 92327878 A 19780710