JPS5538817A - Production of phenolic resin - Google Patents
Production of phenolic resinInfo
- Publication number
- JPS5538817A JPS5538817A JP11120678A JP11120678A JPS5538817A JP S5538817 A JPS5538817 A JP S5538817A JP 11120678 A JP11120678 A JP 11120678A JP 11120678 A JP11120678 A JP 11120678A JP S5538817 A JPS5538817 A JP S5538817A
- Authority
- JP
- Japan
- Prior art keywords
- phenol
- formaldehyde
- oligomers
- phenolic resin
- pka
- 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
Abstract
PURPOSE: To polyfunctional phenol and formaldehyde are made to act on oligomers resulting from reaction between a difunctional phenol and formaldehyde to give a phenolic resin suitable for making laminates with high punchability.
CONSTITUTION: The reaction of a difunctional phenol as terpene phenol or p-cresol with formaldehyde is effected in the presence of an alkaline catalyst of 10 or more pKa as tertiary amine to form oligomers including less than 15 benzene nuclei, preferably 2W6 nuclei. Then, a polyfunctional phenol as m-cresol and formaldehyde are added to the oligomers 0.3W5 times the quantity of the oligomers and they are made to react in the presence of 0.02W0.005mol, per mole of the polyfunctional phenol, of an alkaline catalyst of 10 or more pKa as tertiary amin to produce the objective phenolic resin.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11120678A JPS5538817A (en) | 1978-09-09 | 1978-09-09 | Production of phenolic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11120678A JPS5538817A (en) | 1978-09-09 | 1978-09-09 | Production of phenolic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5538817A true JPS5538817A (en) | 1980-03-18 |
Family
ID=14555196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11120678A Pending JPS5538817A (en) | 1978-09-09 | 1978-09-09 | Production of phenolic resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538817A (en) |
-
1978
- 1978-09-09 JP JP11120678A patent/JPS5538817A/en active Pending
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