JPS5581842A - Purification of m-phenylenediamine - Google Patents
Purification of m-phenylenediamineInfo
- Publication number
- JPS5581842A JPS5581842A JP15494378A JP15494378A JPS5581842A JP S5581842 A JPS5581842 A JP S5581842A JP 15494378 A JP15494378 A JP 15494378A JP 15494378 A JP15494378 A JP 15494378A JP S5581842 A JPS5581842 A JP S5581842A
- Authority
- JP
- Japan
- Prior art keywords
- phenylenediamine
- aromatic solvent
- purify
- washing
- cooling
- 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 purify m-phenylenediamine by simple operations comprising; treating molten m-phenylenediamine with an aromatic solvent, followed by washing, cooling and crystallization.
CONSTITUTION: More than the saturated amount of m-phenylenediamine in an aromatic solvent (esp. benzene or toluene) is heatd at more than its melting temp. Then the molten m-phenylenediamine is treated with the aromatic solvent followed by washing, cooling and cristallization, to purify m-phenylenediamine. The purified m-phenylenediamine is substantially free of the substances which inhibit the polymerization, because, the process can be performed without using other chemicals (e.g. discoloration inhibitor) except the aromatic solvent.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15494378A JPS5581842A (en) | 1978-12-18 | 1978-12-18 | Purification of m-phenylenediamine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15494378A JPS5581842A (en) | 1978-12-18 | 1978-12-18 | Purification of m-phenylenediamine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5581842A true JPS5581842A (en) | 1980-06-20 |
Family
ID=15595313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15494378A Pending JPS5581842A (en) | 1978-12-18 | 1978-12-18 | Purification of m-phenylenediamine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5581842A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3203994A (en) * | 1962-12-27 | 1965-08-31 | Du Pont | Purification of meta-phenylenediamine |
-
1978
- 1978-12-18 JP JP15494378A patent/JPS5581842A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3203994A (en) * | 1962-12-27 | 1965-08-31 | Du Pont | Purification of meta-phenylenediamine |
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