JPS5448893A - Preparation of phenolic resin - Google Patents

Preparation of phenolic resin

Info

Publication number
JPS5448893A
JPS5448893A JP11470977A JP11470977A JPS5448893A JP S5448893 A JPS5448893 A JP S5448893A JP 11470977 A JP11470977 A JP 11470977A JP 11470977 A JP11470977 A JP 11470977A JP S5448893 A JPS5448893 A JP S5448893A
Authority
JP
Japan
Prior art keywords
phenol compound
reacted
phenolic resin
varnishes
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.)
Granted
Application number
JP11470977A
Other languages
Japanese (ja)
Other versions
JPS603328B2 (en
Inventor
Nobukatsu Kato
Tsutomu Takase
Yoshio Morimoto
Nami Kataoka
Minoru Hattori
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP11470977A priority Critical patent/JPS603328B2/en
Priority to US05/927,780 priority patent/US4158650A/en
Priority to CA000308710A priority patent/CA1120187A/en
Priority to DE7878300246T priority patent/DE2861314D1/en
Priority to EP78300246A priority patent/EP0000834B1/en
Publication of JPS5448893A publication Critical patent/JPS5448893A/en
Publication of JPS603328B2 publication Critical patent/JPS603328B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Phenolic Resins Or Amino Resins (AREA)

Abstract

PURPOSE: To prepare a phenolic resin having improved flexibility withoug lowering the excellent characteristics of the resin, by reacting isopropenylphenol, etc. with dehydrated castor oil, thereafter with a phenol compound, further with formaldehyde.
CONSTITUTION: (A) Isopropenylphenol or its oligomer I or II (n is 0-18) is reacted with (B) dehydrated castor oil in the presence of an acidic catalyst, optionally together with a phenol compound. The product is further reacted with a phenol compound in the presence of an acidic catalyst. A phenolic component containing the above reaction product is reacted with formaldehyde to give the desired phenolic resin.
EFFECT: Varnishes having uniformity and stability are excellent obtained. The varnishes give laminated sheets having improved electrical and mechanical properties, humidity resistance, water resistance and dimensional stability.
USE: Electrical insulating materials, decorative laminated boards, etc.
COPYRIGHT: (C)1979,JPO&Japio
JP11470977A 1977-08-04 1977-09-26 Method for producing phenolic resin Expired JPS603328B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP11470977A JPS603328B2 (en) 1977-09-26 1977-09-26 Method for producing phenolic resin
US05/927,780 US4158650A (en) 1977-08-04 1978-07-25 Process for producing modified phenolic resin
CA000308710A CA1120187A (en) 1977-08-04 1978-08-03 Process for producing modified phenolic resin
DE7878300246T DE2861314D1 (en) 1977-08-04 1978-08-03 Process for producing modified phenolic resins
EP78300246A EP0000834B1 (en) 1977-08-04 1978-08-03 Process for producing modified phenolic resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11470977A JPS603328B2 (en) 1977-09-26 1977-09-26 Method for producing phenolic resin

Publications (2)

Publication Number Publication Date
JPS5448893A true JPS5448893A (en) 1979-04-17
JPS603328B2 JPS603328B2 (en) 1985-01-28

Family

ID=14644652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11470977A Expired JPS603328B2 (en) 1977-08-04 1977-09-26 Method for producing phenolic resin

Country Status (1)

Country Link
JP (1) JPS603328B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126625A2 (en) * 1983-05-18 1984-11-28 Sumitomo Chemical Company, Limited Method for the production of phenolic compounds and resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126625A2 (en) * 1983-05-18 1984-11-28 Sumitomo Chemical Company, Limited Method for the production of phenolic compounds and resins

Also Published As

Publication number Publication date
JPS603328B2 (en) 1985-01-28

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