Title:
PRODUCTION OF TRIISOCYANATE
Document Type and Number:
Japanese Patent JP3869494
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a triisocyanate free from any mechanical problem, by phosgenation of the corresponding triamine under specific conditions without the need of using a large quantity of solvent.
SOLUTION: In obtaining this compound of formula I [R is a 1-22C (cyclic) aliphatic hydrocarbon], (A) a triamine of formula II, present in the form of vapor and heated to 200-600°C is continuously reacted with (B) phosgene heated to 200-600°C in a tubular reaction chamber heated to 200-600°C and free from any mobile parts while maintaining the flow in the chamber at ≥3m/s, and a gaseous mixture leaving continuously from the reaction chamber is cooled with an inert cooling medium kept at a temperature higher than the decomposition temperature of carbamic acid chloride corresponding to the component A and the triisocyanate solution of the solvent is recovered and the objective compound is then recovered from the solution. The component A is pref. 1,8- diamino-4-(aminomethyl)-octane.
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Inventors:
Eritsk Bishyov
Jürgen Dermer
Andreas Frink
Wolfgang Clone
Atteira Mornal
Jürgen Dermer
Andreas Frink
Wolfgang Clone
Atteira Mornal
Application Number:
JP17979596A
Publication Date:
January 17, 2007
Filing Date:
June 21, 1996
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
C07C263/04; C07C265/14; C07C263/10; C07C265/10; (IPC1-7): C07C265/14; C07C263/04
Domestic Patent References:
| JP56127341A | ||||
| JP60233044A | ||||
| JP55167269A | ||||
| JP63280050A | ||||
| JP7278089A | ||||
| JP641046A | ||||
| JP6192205A |
Attorney, Agent or Firm:
Aoyama Aoi
Yasuo Shibata
Yasuo Shibata
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