JPS54133593A - Preparation of phenolic resin - Google Patents

Preparation of phenolic resin

Info

Publication number
JPS54133593A
JPS54133593A JP4150278A JP4150278A JPS54133593A JP S54133593 A JPS54133593 A JP S54133593A JP 4150278 A JP4150278 A JP 4150278A JP 4150278 A JP4150278 A JP 4150278A JP S54133593 A JPS54133593 A JP S54133593A
Authority
JP
Japan
Prior art keywords
phenolic resin
softening point
polyhydric alcohol
resin
preparation
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
JP4150278A
Other languages
Japanese (ja)
Inventor
Takaaki Sakamoto
Yoshihiro Kitsuta
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 JP4150278A priority Critical patent/JPS54133593A/en
Publication of JPS54133593A publication Critical patent/JPS54133593A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

PURPOSE: To facilitate the discharge of a phenolic resin having high viscosity and high softening point from the reactor, by adding a polyhydric alcohol to the resin before discharge, thereby reducing the viscosity and the softening point.
CONSTITUTION: In the preparation of a novolak-type phenolic resin having high viscosity and high softening point, pref. 1W10 wt% of a polyhydric alcohol, e.g. ethylene glycol, low-molecular, liquid polypropylene glycol, pentaerythrytol, etc. is added to the resin before discharging from the reactor. When the amount of the polyhydric alcohol exceeds 10 wt%, the high-temperature rigidity and the curing rate of the resin decreases to undesirable levels, and when it is lower than 1 wt%, the effect is not satisfactory.
COPYRIGHT: (C)1979,JPO&Japio
JP4150278A 1978-04-07 1978-04-07 Preparation of phenolic resin Pending JPS54133593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4150278A JPS54133593A (en) 1978-04-07 1978-04-07 Preparation of phenolic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4150278A JPS54133593A (en) 1978-04-07 1978-04-07 Preparation of phenolic resin

Publications (1)

Publication Number Publication Date
JPS54133593A true JPS54133593A (en) 1979-10-17

Family

ID=12610123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4150278A Pending JPS54133593A (en) 1978-04-07 1978-04-07 Preparation of phenolic resin

Country Status (1)

Country Link
JP (1) JPS54133593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211359A (en) * 1985-03-18 1986-09-19 Toshiba Chem Corp Phenolic resin molding material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211359A (en) * 1985-03-18 1986-09-19 Toshiba Chem Corp Phenolic resin molding material

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