Title:
METHOD FOR CONTINUOUSLY PRODUCING ISOCYANATE
Document Type and Number:
Japanese Patent JP2008007506
Kind Code:
A
Abstract:
To develop a multistage method for producing an isocyanate in a very high chemical yield and a high space time yield with a small amount of accumulated phosgene.
The method is one for producing an isocyanate by reacting an organic amine with phosgene in at least three stages including (a) a first stage performed in a dynamic mixer, (b) a second stage performed in at least one reactor, and (c) a third stage performed in at least one material separation apparatus, wherein (1) the pressure in the reactor in the second stage is higher than or equal to the pressure in the dynamic mixer in the first stage, and (2) the pressure in the material separation apparatus in the third stage is lower than the pressure in the reactor in the second stage.
Inventors:
POHL FRITZ
SERRA RICARDO
EHLERS MATTHIAS
BOLTON JEFFREY S
SOLAK GARY B
BOURGEOIS KIRK J
MCCULLOUGH GREGORY L
HICKS AMBER R
HILLMAN RICHARD G
SAGER JAMES E
WANG XIOYAN
MILLER SPOTSWOOD
OCHEL RALF
DELUCIA SARA
SERRA RICARDO
EHLERS MATTHIAS
BOLTON JEFFREY S
SOLAK GARY B
BOURGEOIS KIRK J
MCCULLOUGH GREGORY L
HICKS AMBER R
HILLMAN RICHARD G
SAGER JAMES E
WANG XIOYAN
MILLER SPOTSWOOD
OCHEL RALF
DELUCIA SARA
Application Number:
JP2007167869A
Publication Date:
January 17, 2008
Filing Date:
June 26, 2007
Export Citation:
Assignee:
BAYER MATERIALSCIENCE AG
International Classes:
C07C263/10; C07C263/20; C07C265/14
Domestic Patent References:
| JPS63303961A | 1988-12-12 | |||
| JP2006510692A | 2006-03-30 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard
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