Title:
PROCESS FOR PRODUCING ALIPHATIC ISOCYANATE HAVING OXYALKYLENE GROUP
Document Type and Number:
WIPO Patent Application WO/2007/020777
Kind Code:
A1
Abstract:
A process for producing an aliphatic isocyanate having an oxyalkylene group which comprises stepwise reacting either an aliphatic amine having an oxyalkylene group or a hydrochloride thereof with phosgene in an ester solvent in at least two temperature ranges to obtain the target isocyanate compound. For example, the amine compound is reacted with phosgene in a temperature range of 0-90°C and then further reacted with phosgene at 90-160°C. This process for producing an aliphatic isocyanate having an oxyalkylene group is efficient and is industrially utilizable.
Inventors:
KAIKAWA TAKESHI (JP)
MIYAMOTO SHINICHI (JP)
SASAJIMA KIYOKAZU (JP)
MIYAMOTO SHINICHI (JP)
SASAJIMA KIYOKAZU (JP)
Application Number:
PCT/JP2006/314753
Publication Date:
February 22, 2007
Filing Date:
July 26, 2006
Export Citation:
Assignee:
NIPPON POLYURETHANE KOGYO KK (JP)
KAIKAWA TAKESHI (JP)
MIYAMOTO SHINICHI (JP)
SASAJIMA KIYOKAZU (JP)
KAIKAWA TAKESHI (JP)
MIYAMOTO SHINICHI (JP)
SASAJIMA KIYOKAZU (JP)
International Classes:
C07C263/10; C07C265/02
Foreign References:
| GB1243793A | 1971-08-25 | |||
| JPH03204851A | 1991-09-06 | |||
| JPH07233137A | 1995-09-05 |
Attorney, Agent or Firm:
KOJIMA, Takashi (16-12 Ginza 2-chom, Chuo-ku Tokyo 61, JP)
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