Title (en)

Process for the preparation of isocyanates from formamides.

Title (de)

Verfahren zur Herstellung von Isocyanaten aus den entsprechenden Formamiden.

Title (fr)

Procédé de préparation d'isocyanates à partir de formamides.

Publication

EP 0000602 A1 19790207 (EN)

Application

EP 78200097 A 19780714

Priority

NL 7708510 A 19770802

Abstract (en)

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

C07C 118/04

IPC 8 full level

B01J 23/00 (2006.01); B01J 23/38 (2006.01); C07B 61/00 (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)

1. C07C 263/20 + C07C 265/12
2. C07C 263/00 + C07C 265/12
3. C07C 263/00 + C07C 265/14
4. C07C 263/20 + C07C 265/14
5. C07C 263/20 + C07C 265/04
6. C07C 263/00 + C07C 265/04
7. C07C 263/00 + C07C 265/10
8. C07C 263/20 + C07C 265/10

Citation (search report)

• [A] US 3099673 A 19630730 - ENGELBERT KUHLE
• [A] US 3277140 A 19661004 - DONOVAN JOSEPH J, et al
• [A] US 3960914 A 19760601 - LYONS JAMES E
• [A] GB 1152978 A 19690521 - BAYER AG [DE]
• [A] FR 2291186 A1 19760611 - STANDARD OIL CO [US]
• [A] FR 2310334 A1 19761203 - BASF AG [DE]

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