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Title:
VAPOR-PHASE ISOCYANATE PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2008174549
Kind Code:
A
Abstract:

To provide a vapor-phase isocyanate production method which is commercially advantageous.

The production of an isocyanate by reacting a suitable primary amine with phosgene in a vapor phase is practiced under adiabatic conditions by ensuring that the average residence time in a reaction chamber is 0.05-15 sec. Thus, desirably, it is possible to avoid a problem of temperature control irrespectively of the shape of a reactor, to produce an isocyanate in a high space-time yield on an industrial scale, and to accomplish a substantial increase in the length of the operation time of a production plant.


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Inventors:
POHL FRITZ
BISKUP KLAUS
BRUNS RAINER
STEFFENS FRIEDHELM
STUTZ HERBERT
Application Number:
JP2007320397A
Publication Date:
July 31, 2008
Filing Date:
December 12, 2007
Export Citation:
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Assignee:
BAYER MATERIALSCIENCE AG
International Classes:
C07C263/10; C07C263/20; C07C265/14
Domestic Patent References:
JPH0641046A1994-02-15
JP2006022098A2006-01-26
JPS63280050A1988-11-17
JPH07278089A1995-10-24
JP2005510558A2005-04-21
JP2009503022A2009-01-29
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel



 
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