JPS5476695A - Preparation of solid urea resin - Google Patents
Preparation of solid urea resinInfo
- Publication number
- JPS5476695A JPS5476695A JP14440777A JP14440777A JPS5476695A JP S5476695 A JPS5476695 A JP S5476695A JP 14440777 A JP14440777 A JP 14440777A JP 14440777 A JP14440777 A JP 14440777A JP S5476695 A JPS5476695 A JP S5476695A
- Authority
- JP
- Japan
- Prior art keywords
- urea
- methanol
- resin
- melamine
- formaldehyde
- 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
- Phenolic Resins Or Amino Resins (AREA)
Abstract
PURPOSE: To prepare the title resin having low water content and low residual aldehyde, useful as a binder of cellulosic filler, by reacting urea with formaldehyde pepared by the air oxydation of methanol, and further reacting the product with melamine.
CONSTITUTION: A composition composed of 50W73 wt% of formaldehyde (F), 7W20% of urea (U), and 0W6 wt% of methanol, is prepared by oxidizing methanol with air, and dissolving the product in urea. The ratio of F/U is adjusted between 1.2 and 2.5, to afford a reaction mixture. Before the reaction mixture loses its clarity, 5 parts of melamine, based on 100 parts of urea, is added thereto, and made to react in the presence of an alkaline catalyst such as guanidine carbonate, at pH≥6.5, and 40W70°C. The objective solid urea resin is obtained by dehydrating the resulting resin syrup.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14440777A JPS5476695A (en) | 1977-11-30 | 1977-11-30 | Preparation of solid urea resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14440777A JPS5476695A (en) | 1977-11-30 | 1977-11-30 | Preparation of solid urea resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5476695A true JPS5476695A (en) | 1979-06-19 |
Family
ID=15361445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14440777A Pending JPS5476695A (en) | 1977-11-30 | 1977-11-30 | Preparation of solid urea resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5476695A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100418515B1 (en) * | 2001-11-08 | 2004-02-11 | 주식회사유니드 | Manufacturing method of E0 grade Melamine-Urea-Formaldehyde Resin(MUF) and adhesive for medium density fiber board by use of MDF Resin |
-
1977
- 1977-11-30 JP JP14440777A patent/JPS5476695A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100418515B1 (en) * | 2001-11-08 | 2004-02-11 | 주식회사유니드 | Manufacturing method of E0 grade Melamine-Urea-Formaldehyde Resin(MUF) and adhesive for medium density fiber board by use of MDF Resin |
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