JPS5755973A - Preparation of magnetic paint - Google Patents
Preparation of magnetic paintInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52151898A (en) * | 1976-06-11 | 1977-12-16 | Hitachi Ltd | Manufacturing method of magnetic paint |
-
1980
- 1980-09-19 JP JP13092980A patent/JPS5755973A/en active Pending
Patent Citations (1)
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)
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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