Title:
PROCESS FOR PRODUCING 2,5-DIAMINO-1,4-BENZOQUINONE AND 2,5-DIAMINO-1,4-BENZENEDIOL, AND SALT THEREOF
Document Type and Number:
Japanese Patent JP2007070300
Kind Code:
A
Abstract:
To provide a process for producing 2,5-diamino-1,4-benzenediol and/or a salt thereof as a monomer of high performance fibers.
A process for producing 2,5-diamino-1,4-benzoquinone comprises allowing 2,5-dialkoxy-1,4-benzoquinone and ammonia to react with each other while applying a pressure of at least 0.1 kPa in a solvent. A process for producing 2,5-diamino-1,4-benzenediol and/or a salt thereof from the 2,5-diamino-1,4-benzoquinone is also provided.
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Inventors:
JOKAI MASAYUKI
KUWABARA HIROAKI
KUWABARA HIROAKI
Application Number:
JP2005260611A
Publication Date:
March 22, 2007
Filing Date:
September 08, 2005
Export Citation:
Assignee:
TEIJIN LTD
TEIJIN TECHNO PRODUCTS LTD
TEIJIN TECHNO PRODUCTS LTD
International Classes:
C07C221/00; C07C225/28
Domestic Patent References:
| JPS3930274B1 | ||||
| JPS3923398B1 | ||||
| JP159555C | ||||
| JPS3913919B1 | ||||
| JPH02221281A | 1990-09-04 | |||
| JPS61215358A | 1986-09-25 | |||
| JPS62246542A | 1987-10-27 | |||
| JPS552683A | 1980-01-10 | |||
| JPS51151726A | 1976-12-27 | |||
| JP3038262B | ||||
| JP2001354633A | 2001-12-25 |
Attorney, Agent or Firm:
Hideko Mihara