Title:
METHOD FOR PRODUCING PURIFIED PENTAMETHYLENEDIAMINE AND METHOD FOR PRODUCING POLYAMIDE RESIN
Document Type and Number:
Japanese Patent JP2016033138
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To recover purified pentamethylenediamine in high yield by preventing production troubles such as blocking of piping and besides by a simple production process, in production of pentamethylenediamine by thermal decomposition of pentamethylenediamine carbonate.SOLUTION: A method for producing purified pentamethylenediamine is provided that includes a thermal decomposition step of heating an aqueous solution of pentamethylenediamine thereby decomposing the carbonate into crude pentamethylenediamine and carbon dioxide, pressure in the thermal decomposition step being 0.21 MPa to 1.0 MPa. When obtaining the crude pentamethylenediamine and carbon dioxide by thermal decomposition of the aqueous solution of pentamethylenediamine carbonate, the thermal decomposition is performed under the specific pressure, thereby production troubles such as blocking of piping can be decreased and purified pentamethylenediamine can be obtained in high yield.SELECTED DRAWING: Figure 3
Inventors:
HITOMI TATSUYA
YAMAMOTO MASANORI
NISHIDA YUICHI
KUSANO KAZUNAO
URASHIMA HIDETOSHI
MIYAOKU KOHEI
YAMAMOTO MASANORI
NISHIDA YUICHI
KUSANO KAZUNAO
URASHIMA HIDETOSHI
MIYAOKU KOHEI
Application Number:
JP2015219354A
Publication Date:
March 10, 2016
Filing Date:
November 09, 2015
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
C07C209/68; C07C209/84; C07C211/09; C08G69/26; C12P13/00
Domestic Patent References:
| JP2011225554A | 2011-11-10 |
Foreign References:
| WO2010002000A1 | 2010-01-07 |
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno
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