JPS55112253A - Phenol resin composition - Google Patents

Phenol resin composition

Info

Publication number
JPS55112253A
JPS55112253A JP2037579A JP2037579A JPS55112253A JP S55112253 A JPS55112253 A JP S55112253A JP 2037579 A JP2037579 A JP 2037579A JP 2037579 A JP2037579 A JP 2037579A JP S55112253 A JPS55112253 A JP S55112253A
Authority
JP
Japan
Prior art keywords
phenol resin
size
mesh
mica
resin composition
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
JP2037579A
Other languages
Japanese (ja)
Inventor
Takashi Konya
Yoshio Kotani
Ikuro Hiroe
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 JP2037579A priority Critical patent/JPS55112253A/en
Publication of JPS55112253A publication Critical patent/JPS55112253A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: Resin composition having a setting time suitable for large-size moldings and capable of improving productivity of large-size commutator material, which is prepared by the addition of hexamethylenetetramine to a condensation-type phenol resin containing mica.
CONSTITUTION: 50W80wt%, of 20W80 mesh mica and additionally 5W11wt% of hexamethylenetetramine are added to a condensation-type phenol resin. When said mica is less than 20 mesh in particle size, the appearance of the moldings deteriorates the property is ununiform and the impact strength is reduced. When greater than 80 mesh, the reinforcing effect is reduced, Charpy impact strength of at least 2kg-cm/cm2, necessary for the large-size commutator material, being not attainable.
COPYRIGHT: (C)1980,JPO&Japio
JP2037579A 1979-02-22 1979-02-22 Phenol resin composition Pending JPS55112253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2037579A JPS55112253A (en) 1979-02-22 1979-02-22 Phenol resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2037579A JPS55112253A (en) 1979-02-22 1979-02-22 Phenol resin composition

Publications (1)

Publication Number Publication Date
JPS55112253A true JPS55112253A (en) 1980-08-29

Family

ID=12025300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2037579A Pending JPS55112253A (en) 1979-02-22 1979-02-22 Phenol resin composition

Country Status (1)

Country Link
JP (1) JPS55112253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998015774A1 (en) * 1996-10-07 1998-04-16 Bakelite Ag Reflector blank and method and means of producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998015774A1 (en) * 1996-10-07 1998-04-16 Bakelite Ag Reflector blank and method and means of producing the same

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