Title:
METHOD FOR PRODUCING ALIPHATIC ISOCYANATE CONTAINING OXYALKYLENE GROUP
Document Type and Number:
Japanese Patent JP2007223997
Kind Code:
A
Abstract:
To provide a method for producing an aliphatic isocyanate containing an oxyalkylene group, capable of being utilized industrially, in which the oxyalkylene group-containing aliphatic isocyanate can efficiently be obtained in high yield.
This method for producing the aliphatic isocyanate containing the oxyalkylene group comprises reacting an aliphatic amine containing the oxyalkylene group or its hydrochloride salt with phosgene stepwisely in at least two temperature ranges, e.g. in 0-90°C temperature range and subsequently in 90-160°C temperature range in an ester solvent to obtain the isocyanate compound and then adding glycidol thereto and distilling the isocyanate.
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
KAIGAWA TAKESHI
MIYAMOTO SHINICHI
MATSUBARA YORIO
SASAJIMA KIYOKAZU
MIYAMOTO SHINICHI
MATSUBARA YORIO
SASAJIMA KIYOKAZU
Application Number:
JP2006050294A
Publication Date:
September 06, 2007
Filing Date:
February 27, 2006
Export Citation:
Assignee:
NIPPON POLYURETHANE KOGYO KK
International Classes:
C07C263/20; C07C263/10; C07C265/04
Domestic Patent References:
| JPH0952874A | 1997-02-25 | |||
| JPS6357556A | 1988-03-12 | |||
| JPH03204851A | 1991-09-06 | |||
| JPH07233137A | 1995-09-05 | |||
| JPH04211641A | 1992-08-03 | |||
| JPH09216860A | 1997-08-19 |
Foreign References:
| WO2007020777A1 | 2007-02-22 | |||
| GB1243793B | ||||
| GB1465014A | 1977-02-16 |
Attorney, Agent or Firm:
Takashi Kojima
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa