JPS56167772A - Preparation of magnetic paint - Google Patents

Preparation of magnetic paint

Info

Publication number
JPS56167772A
JPS56167772A JP7231280A JP7231280A JPS56167772A JP S56167772 A JPS56167772 A JP S56167772A JP 7231280 A JP7231280 A JP 7231280A JP 7231280 A JP7231280 A JP 7231280A JP S56167772 A JPS56167772 A JP S56167772A
Authority
JP
Japan
Prior art keywords
magnetic powder
preparation
abrasive material
magnetic
magnetic paint
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
JP7231280A
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 JP7231280A priority Critical patent/JPS56167772A/en
Publication of JPS56167772A publication Critical patent/JPS56167772A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)

Abstract

PURPOSE: To avoid damage of a needlelike shape of a magnetic powder by performing admixing and dispersion of each component in two specified steps, in the preparation of a magnetic paint contg. a polyurethane resin and a vinyl chloride- vinyl acetate copolymer as binders.
CONSTITUTION: In the preparation of a magnetic paint consisting of a magnetic powder, binder, lubricant, abrasive material and additive by use of said two polymers as the binder, an iron metal power (a magnetic powder) and a polyurethane resin are primarily dispersed and then secondarily dispersed with addition of the abrasive material and a vinyl chloride-vinyl acetate copolymer. Alumina, silicon carbide, etc. of a particle size about 0.05W3μ in an amt. of about 0.01W10pts.wt. per 100pts.wt.said magnetic powder, is used as abrasive material.
COPYRIGHT: (C)1981,JPO&Japio
JP7231280A 1980-05-29 1980-05-29 Preparation of magnetic paint Pending JPS56167772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7231280A JPS56167772A (en) 1980-05-29 1980-05-29 Preparation of magnetic paint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7231280A JPS56167772A (en) 1980-05-29 1980-05-29 Preparation of magnetic paint

Publications (1)

Publication Number Publication Date
JPS56167772A true JPS56167772A (en) 1981-12-23

Family

ID=13485621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7231280A Pending JPS56167772A (en) 1980-05-29 1980-05-29 Preparation of magnetic paint

Country Status (1)

Country Link
JP (1) JPS56167772A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634632A (en) * 1983-12-09 1987-01-06 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4761243A (en) * 1985-12-07 1988-08-02 Fuji Photo Film Co., Ltd. Process for the preparation of magnetic paint

Citations (2)

* 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
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium

Patent Citations (2)

* 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
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634632A (en) * 1983-12-09 1987-01-06 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4761243A (en) * 1985-12-07 1988-08-02 Fuji Photo Film Co., Ltd. Process for the preparation of magnetic paint

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