JPS52136291A - Preparation of phenolic resins - Google Patents
Preparation of phenolic resinsInfo
- Publication number
- JPS52136291A JPS52136291A JP5457376A JP5457376A JPS52136291A JP S52136291 A JPS52136291 A JP S52136291A JP 5457376 A JP5457376 A JP 5457376A JP 5457376 A JP5457376 A JP 5457376A JP S52136291 A JPS52136291 A JP S52136291A
- Authority
- JP
- Japan
- Prior art keywords
- phenolic resins
- preparation
- ammonia
- catalyst
- carboxylic acid
- 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 obtain phenolic resins free from ammonia without corroding metal embedded in molded articles, having improved electrical properties, rapid curing rate and a long pot life, by the use of a concentrated formaldehyde and a metal salt of carboxylic acid as a catalyst.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5457376A JPS52136291A (en) | 1976-05-12 | 1976-05-12 | Preparation of phenolic resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5457376A JPS52136291A (en) | 1976-05-12 | 1976-05-12 | Preparation of phenolic resins |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52136291A true JPS52136291A (en) | 1977-11-14 |
Family
ID=12974425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5457376A Pending JPS52136291A (en) | 1976-05-12 | 1976-05-12 | Preparation of phenolic resins |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52136291A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100393764C (en) * | 2003-06-27 | 2008-06-11 | 上海尖端工程材料有限公司 | Foam type phenol-formaldehyde resin and its production technology |
-
1976
- 1976-05-12 JP JP5457376A patent/JPS52136291A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100393764C (en) * | 2003-06-27 | 2008-06-11 | 上海尖端工程材料有限公司 | Foam type phenol-formaldehyde resin and its production technology |
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