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Title:
PROCESS FOR PRODUCING ALKYLARYL CARBAMATE AND PROCESS FOR PRODUCING ISOCYANATE
Document Type and Number:
Japanese Patent JP2011201795
Kind Code:
A
Abstract:

To provide a process for producing an alkylaryl carbamate which can industrially obtain the alkylaryl carbamate with good workability and productivity and an isocyanate which is obtained with the use of the alkylaryl carbamate.

The alkylaryl carbamate is produced by reacting an aromatic amine with an alkylaryl carbonate in the presence of a carboxylic acid and the isocyanate is produced by thermally decomposing the obtained alkylaryl carbamate. When the alkylaryl carbamate is produced by this method, without mixing a strongly toxic metal compound, furthermore without requiring complicated post-treatment steps, the alkylaryl carbamate can be industrially produced with good workability and productivity. Further, when the isocyanate is produced by this method, the polyisocyanate which is industrially used as a raw material of polyurethanes can be simply and efficiently produced.


Inventors:
YOSHIDA TSUTOMU
SASAKI SUKEAKI
HIRATA FUMIAKI
Application Number:
JP2010069239A
Publication Date:
October 13, 2011
Filing Date:
March 25, 2010
Export Citation:
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Assignee:
MITSUI CHEMICALS INC
International Classes:
C07C269/04; C07C263/04; C07C263/12; C07C265/14; C07C271/10; C07B61/00
Domestic Patent References:
JPH0311048A1991-01-18
JP2003252846A2003-09-10
JPS4711562A
JP2003201276A2003-07-18
JPH06128215A1994-05-10
JPH10316645A1998-12-02
JPH0311048A1991-01-18
JP2003252846A2003-09-10
JPS4711562A
JP2003201276A2003-07-18
Attorney, Agent or Firm:
Hiroyuki Okamoto



 
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