JPS52136291A - Preparation of phenolic resins - Google Patents

Preparation of phenolic resins

Info

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
Application number
JP5457376A
Other languages
Japanese (ja)
Inventor
Hidemi Fukushi
Ikuro Hiroe
Yasuhiro Shiotani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP5457376A priority Critical patent/JPS52136291A/en
Publication of JPS52136291A publication Critical patent/JPS52136291A/en
Pending legal-status Critical Current

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
JP5457376A 1976-05-12 1976-05-12 Preparation of phenolic resins Pending JPS52136291A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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