JPS55326A - Preparation of phenylenediamine - Google Patents
Preparation of phenylenediamineInfo
- Publication number
- JPS55326A JPS55326A JP7319578A JP7319578A JPS55326A JP S55326 A JPS55326 A JP S55326A JP 7319578 A JP7319578 A JP 7319578A JP 7319578 A JP7319578 A JP 7319578A JP S55326 A JPS55326 A JP S55326A
- Authority
- JP
- Japan
- Prior art keywords
- acid diamide
- halogen compound
- solvent
- electrolysis
- phthalic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the title compound useful as an intermediate for dyes, rubber chemicals, and photographic developers in high yield, by hydrolyzing a reaction product, prepared through electrolysis of a phthalic acid diamide in the presence of a halogen compound in a solvent.
CONSTITUTION: A phthalic acid diamide, e.g. terephthalic acid diamide, is electrolyzed in the presence of a halogen compound, e.g. LiCl or NaCl, in a solvent, e.g. acetonitrile, using platinum or carbon electrodes at 0W80°C, preferably 5W 30°C. The electrolysis product is hydrolyzed at 30W100°C, preferably 30W80°C, to give phenylenediamine.
EFFECT: Inexpensive and easy method employing a small amount of alkali. The halogen compound can be recycled and regenerated.
USE: Raw materials for polyamides for special uses.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7319578A JPS55326A (en) | 1978-06-19 | 1978-06-19 | Preparation of phenylenediamine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7319578A JPS55326A (en) | 1978-06-19 | 1978-06-19 | Preparation of phenylenediamine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55326A true JPS55326A (en) | 1980-01-05 |
Family
ID=13511108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7319578A Pending JPS55326A (en) | 1978-06-19 | 1978-06-19 | Preparation of phenylenediamine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55326A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102505861A (en) * | 2011-11-02 | 2012-06-20 | 天津二十冶建设有限公司 | Side wall large-scale embedded part fixing and supporting method of cast-in-place concrete wall |
-
1978
- 1978-06-19 JP JP7319578A patent/JPS55326A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102505861A (en) * | 2011-11-02 | 2012-06-20 | 天津二十冶建设有限公司 | Side wall large-scale embedded part fixing and supporting method of cast-in-place concrete wall |
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