Title:
METHOD FOR PRODUCING AROMATIC DIISOCYANATE IN VAPOR PHASE
Document Type and Number:
Japanese Patent JP2009126865
Kind Code:
A
Abstract:
To produce an aromatic diisocyanate by reacting a corresponding primary aromatic diamine with phosgene in a vapor phase.
Phosgene is reacted with the primary aromatic diamine within a mean residence time of from 0.05 to 15 seconds. The aromatic diamine used contains 0.05 mol% overall of aliphatic amine containing no keto groups per mole of primary amino groups.
Inventors:
POHL FRITZ
BISKUP KLAUS
BRUNS RAINER
STEFFENS FRIEDHELM
PADEKEN LARS
BISKUP KLAUS
BRUNS RAINER
STEFFENS FRIEDHELM
PADEKEN LARS
Application Number:
JP2008297812A
Publication Date:
June 11, 2009
Filing Date:
November 21, 2008
Export Citation:
Assignee:
BAYER MATERIALSCIENCE AG
International Classes:
C07C263/10; C07C265/14
Domestic Patent References:
| JP2008174549A | 2008-07-31 | |||
| JP2007326857A | 2007-12-20 | |||
| JPH0641046A | 1994-02-15 | |||
| JP2006022098A | 2006-01-26 | |||
| JP2007519638A | 2007-07-19 | |||
| JPS62212351A | 1987-09-18 | |||
| JP2005343898A | 2005-12-15 | |||
| JP2003522748A | 2003-07-29 | |||
| JPS4848419A | 1973-07-09 | |||
| JPH06192205A | 1994-07-12 |
Attorney, Agent or Firm:
Mitsuo Tanaka
Takuji Yamada
Kenichi Morizumi
Yasuo Shibata
Yasushi Ochiai
Takuji Yamada
Kenichi Morizumi
Yasuo Shibata
Yasushi Ochiai
Previous Patent: NEWBORN BLOOD VESSEL IMAGING AGENT
Next Patent: METHOD FOR PRODUCING N-SUBSTITUTED MALEIMIDES
Next Patent: METHOD FOR PRODUCING N-SUBSTITUTED MALEIMIDES