JPS57114A - Production of solid urea resin - Google Patents
Production of solid urea resinInfo
- Publication number
- JPS57114A JPS57114A JP7352980A JP7352980A JPS57114A JP S57114 A JPS57114 A JP S57114A JP 7352980 A JP7352980 A JP 7352980A JP 7352980 A JP7352980 A JP 7352980A JP S57114 A JPS57114 A JP S57114A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- water content
- formaldehyde
- urea resin
- urea
- 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
- 229920001807 Urea-formaldehyde Polymers 0.000 title abstract 2
- 239000007787 solid Substances 0.000 title abstract 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- 239000004202 carbamide Substances 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000004014 plasticizer Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
Abstract
PURPOSE: To obtain a solid urea resin having a sufficient ability as a plasticizer in high yields, by reacting urea with formaldehyde in the presence of an alkaline catalyst while controlling the water content of the reaction system at a specified level, and removing the water by vacuum.
CONSTITUTION: Urea is reacted with formaldehyde in the presence of an alkaline catalyst while the water content of the reaction system is controlled at 13W25wt% with respect to the reaction charge. Then, the reaction mixture is cooled, solidified and dried under vacuum, preferably, until the water content reaches 3wt% or below. When the water content of the reaction system is below 13wt%, the system can not be maintained in the liquid state, and the uniform reaction is not possible, and when the water content exceeds 25wt%, the system after completion of the reaction, when cooled, is separated into two phases, i.e., supernatent layer and precipitates. Accordingly, dewatering by a centrifuge or a filter press becomes necessary and the yield is also decreased.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7352980A JPS57114A (en) | 1980-05-30 | 1980-05-30 | Production of solid urea resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7352980A JPS57114A (en) | 1980-05-30 | 1980-05-30 | Production of solid urea resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57114A true JPS57114A (en) | 1982-01-05 |
Family
ID=13520846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7352980A Pending JPS57114A (en) | 1980-05-30 | 1980-05-30 | Production of solid urea resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722631A (en) * | 2013-12-20 | 2014-04-16 | 溧阳市乔森塑料有限公司 | Kneading method of urea molding compound |
-
1980
- 1980-05-30 JP JP7352980A patent/JPS57114A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722631A (en) * | 2013-12-20 | 2014-04-16 | 溧阳市乔森塑料有限公司 | Kneading method of urea molding compound |
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