JPS5751713A - Production of self-curing phenol resin - Google Patents
Production of self-curing phenol resinInfo
- Publication number
- JPS5751713A JPS5751713A JP12590480A JP12590480A JPS5751713A JP S5751713 A JPS5751713 A JP S5751713A JP 12590480 A JP12590480 A JP 12590480A JP 12590480 A JP12590480 A JP 12590480A JP S5751713 A JPS5751713 A JP S5751713A
- Authority
- JP
- Japan
- Prior art keywords
- phenol
- content
- resin
- low
- temperature
- 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 obtain titled resin having a low methylol content and excellent heat stability, by reacting a phenol with formaldehyde in the presence of a catalyst under a neutral, high-concentration and low-temperature condition and then again the product under a weakly acidic and high-temperature condition.
CONSTITUTION: One (1)mol of a phenol is reacted with 1.5W3mol of high-concentration formaldehyde, purity ≥45%, at a pH of 6W8 and a temperature up to 100°C for 2W4hr by use of an alkaline earth metal hydroxide, e.g., calcium hydroxide or barium hydroxide. Then, the self-curing phenol resin of the purpose is obtained by adding an acid such as hydrochloric acid in an amount to adjust the reaction mixture at a pH of 4W6 and again the mixture at a temperature ≥100°C for 2W3hr. The resin thus-produced has a free-phenol content ≤6%, a number average MW exclusive of free phenol of 800W1,200, a low content of methylol groups attached to the phenol nucleus and a high content of diethylene ether groups attached to the phenol nucleus.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12590480A JPS5751713A (en) | 1980-09-12 | 1980-09-12 | Production of self-curing phenol resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12590480A JPS5751713A (en) | 1980-09-12 | 1980-09-12 | Production of self-curing phenol resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5751713A true JPS5751713A (en) | 1982-03-26 |
Family
ID=14921779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12590480A Pending JPS5751713A (en) | 1980-09-12 | 1980-09-12 | Production of self-curing phenol resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5751713A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357624A (en) * | 1986-08-28 | 1988-03-12 | Asahi Organic Chem Ind Co Ltd | Production of selfcurable phenolic resin |
KR100472610B1 (en) * | 2001-07-25 | 2005-03-07 | 세원화성 주식회사 | Cold-setting Curing Product of Phenol Resin |
-
1980
- 1980-09-12 JP JP12590480A patent/JPS5751713A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357624A (en) * | 1986-08-28 | 1988-03-12 | Asahi Organic Chem Ind Co Ltd | Production of selfcurable phenolic resin |
KR100472610B1 (en) * | 2001-07-25 | 2005-03-07 | 세원화성 주식회사 | Cold-setting Curing Product of Phenol Resin |
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