JPS5444000A - Molding material for magnetic recording head element - Google Patents

Molding material for magnetic recording head element

Info

Publication number
JPS5444000A
JPS5444000A JP11071877A JP11071877A JPS5444000A JP S5444000 A JPS5444000 A JP S5444000A JP 11071877 A JP11071877 A JP 11071877A JP 11071877 A JP11071877 A JP 11071877A JP S5444000 A JPS5444000 A JP S5444000A
Authority
JP
Japan
Prior art keywords
molding material
recording head
magnetic recording
head element
compounding
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
JP11071877A
Other languages
Japanese (ja)
Inventor
Yasuo Kudo
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11071877A priority Critical patent/JPS5444000A/en
Publication of JPS5444000A publication Critical patent/JPS5444000A/en
Pending legal-status Critical Current

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  • Epoxy Resins (AREA)

Abstract

PURPOSE: To prepare a molding material for a magnetic recording head element, having low toxicity, and improved potting processability because of an increased pot life and a reduced viscosity, by compounding an epoxy resin with an acid anhydride curing agent and an imidazole curing accelerator at specific ratios.
CONSTITUTION: A molding material is prepared by compounding (A) a bisphenol A-type epoxy resin having an epoxy equivalent of 185W195, with (B) an acid anhydride curing agent (e.g. methylendomethylenetetrahydrophthalic anhydride) and (C) a curing accelerator (e.g. 2-ethylmethylimidazole), wherein (A):(B):(C) is 100: 70W90:1W2.
EFFECT: As the pot life is longer 5W20 times than usual, the electromagnetic characteristics are stabilized. As the material is curable at low temperature, the curing strains imposed on the core and the gap are reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP11071877A 1977-09-14 1977-09-14 Molding material for magnetic recording head element Pending JPS5444000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11071877A JPS5444000A (en) 1977-09-14 1977-09-14 Molding material for magnetic recording head element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11071877A JPS5444000A (en) 1977-09-14 1977-09-14 Molding material for magnetic recording head element

Publications (1)

Publication Number Publication Date
JPS5444000A true JPS5444000A (en) 1979-04-06

Family

ID=14542714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11071877A Pending JPS5444000A (en) 1977-09-14 1977-09-14 Molding material for magnetic recording head element

Country Status (1)

Country Link
JP (1) JPS5444000A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210029A (en) * 1982-05-18 1983-12-07 モビル・オイル・コ−ポレ−シヨン Isomerization
JPS62154306A (en) * 1985-12-27 1987-07-09 Canon Electronics Inc Magnetic head
JPS62170006A (en) * 1986-01-21 1987-07-27 Canon Electronics Inc Magnetic head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210029A (en) * 1982-05-18 1983-12-07 モビル・オイル・コ−ポレ−シヨン Isomerization
JPH049773B2 (en) * 1982-05-18 1992-02-21
JPS62154306A (en) * 1985-12-27 1987-07-09 Canon Electronics Inc Magnetic head
JPS62170006A (en) * 1986-01-21 1987-07-27 Canon Electronics Inc Magnetic head
JPH0535481B2 (en) * 1986-01-21 1993-05-26 Canon Denshi Kk

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