JPS5679678A - Utilization and recovery of ammelide and ammeline - Google Patents
Utilization and recovery of ammelide and ammelineInfo
- Publication number
- JPS5679678A JPS5679678A JP15635579A JP15635579A JPS5679678A JP S5679678 A JPS5679678 A JP S5679678A JP 15635579 A JP15635579 A JP 15635579A JP 15635579 A JP15635579 A JP 15635579A JP S5679678 A JPS5679678 A JP S5679678A
- Authority
- JP
- Japan
- Prior art keywords
- urea
- ammelide
- ammeline
- solid
- dehydrated
- 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.)
- Granted
Links
Abstract
PURPOSE: A solid mix of ammelide and ammeline that is obtained in the purification of isocyanuric acid is recovered, dehydrated or dried, mixed with a specific amount of urea and used effectively as a part of raw materials for a urea-melamine manufacturing plant.
CONSTITUTION: Crude isocyanuric acid resulting from pyrolysis of urea and/or its phyrolysates is extracted with water at a pH of 3.5W8.5 at a temperature of 40W 250°C, separated into solid and liquid to obtain a solid mixture of ammeline and ammelide as by-products. After dehydrated or dried, the solid mixture is mixed with urea at a ratio of less than 40wt% to the urea and used as a part of raw materials for a urea-melamine manufacturing plant.
EFFECT: The problems concerning waste water containing ammelide and ammeline is eliminated and they can be utilized effectively.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15635579A JPS5679678A (en) | 1979-12-04 | 1979-12-04 | Utilization and recovery of ammelide and ammeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15635579A JPS5679678A (en) | 1979-12-04 | 1979-12-04 | Utilization and recovery of ammelide and ammeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5679678A true JPS5679678A (en) | 1981-06-30 |
| JPH0124792B2 JPH0124792B2 (en) | 1989-05-15 |
Family
ID=15625935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15635579A Granted JPS5679678A (en) | 1979-12-04 | 1979-12-04 | Utilization and recovery of ammelide and ammeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5679678A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4663387A (en) * | 1985-04-02 | 1987-05-05 | Kuwait Institute For Scientific Research | Utilization of melamine waste effluent |
| WO1999037628A1 (en) * | 1998-01-23 | 1999-07-29 | Nissan Chemical Industries, Ltd. | Method for recoverying melamine, ammeline and ammelide from waste liquor in melamine process |
| JP2011513348A (en) * | 2008-03-04 | 2011-04-28 | ユーリア カサーレ ソシエテ アノニム | Method for producing high purity melamine from urea |
-
1979
- 1979-12-04 JP JP15635579A patent/JPS5679678A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4663387A (en) * | 1985-04-02 | 1987-05-05 | Kuwait Institute For Scientific Research | Utilization of melamine waste effluent |
| WO1999037628A1 (en) * | 1998-01-23 | 1999-07-29 | Nissan Chemical Industries, Ltd. | Method for recoverying melamine, ammeline and ammelide from waste liquor in melamine process |
| JP2011513348A (en) * | 2008-03-04 | 2011-04-28 | ユーリア カサーレ ソシエテ アノニム | Method for producing high purity melamine from urea |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0124792B2 (en) | 1989-05-15 |
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