JPS5755973A - Preparation of magnetic paint - Google Patents

Preparation of magnetic paint

Info

Publication number
JPS5755973A
JPS5755973A JP13092980A JP13092980A JPS5755973A JP S5755973 A JPS5755973 A JP S5755973A JP 13092980 A JP13092980 A JP 13092980A JP 13092980 A JP13092980 A JP 13092980A JP S5755973 A JPS5755973 A JP S5755973A
Authority
JP
Japan
Prior art keywords
abrasive
preparation
magnetic
magnetic paint
deterioration
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
JP13092980A
Other languages
Japanese (ja)
Inventor
Shizuo Furuyama
Takashi Wakabayashi
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 JP13092980A priority Critical patent/JPS5755973A/en
Publication of JPS5755973A publication Critical patent/JPS5755973A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To efficiently disperse an abrasive without deterioration of needle-like shape of a magnetic powder by the delayed addition of the abrasive, in the preparation of a magnetic paint by use of a polyurethane resin and a vinyl chloride-vinyl acetate copolymer as the main binder.
CONSTITUTION: In the preparation of a magnetic paint by use of a polyurethane resin and a vinyl chloride-vinyl acetate copolymer as the main binder, the binder is dispersed at first and second dispersion steps and then an abrasive such as almina or silicon carbide is added. The abrasive is efficiently dispersed as compared with first-or second-step dispersion without deterioration of the needle-like shape of the magnetic powder, so that a magnetic tape with both excellent squareness and antimagnetic property is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP13092980A 1980-09-19 1980-09-19 Preparation of magnetic paint Pending JPS5755973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13092980A JPS5755973A (en) 1980-09-19 1980-09-19 Preparation of magnetic paint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13092980A JPS5755973A (en) 1980-09-19 1980-09-19 Preparation of magnetic paint

Publications (1)

Publication Number Publication Date
JPS5755973A true JPS5755973A (en) 1982-04-03

Family

ID=15046012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13092980A Pending JPS5755973A (en) 1980-09-19 1980-09-19 Preparation of magnetic paint

Country Status (1)

Country Link
JP (1) JPS5755973A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176321A (en) * 1987-12-29 1989-07-12 Sony Corp Magnetic recording medium
JPH03150721A (en) * 1990-09-21 1991-06-27 Konica Corp Magnetic recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52151898A (en) * 1976-06-11 1977-12-16 Hitachi Ltd Manufacturing method of magnetic paint

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52151898A (en) * 1976-06-11 1977-12-16 Hitachi Ltd Manufacturing method of magnetic paint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176321A (en) * 1987-12-29 1989-07-12 Sony Corp Magnetic recording medium
JPH03150721A (en) * 1990-09-21 1991-06-27 Konica Corp Magnetic recording medium

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