JPS5532209A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5532209A JPS5532209A JP10260978A JP10260978A JPS5532209A JP S5532209 A JPS5532209 A JP S5532209A JP 10260978 A JP10260978 A JP 10260978A JP 10260978 A JP10260978 A JP 10260978A JP S5532209 A JPS5532209 A JP S5532209A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic recording
- interface activator
- phosphate
- reaction
- 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 obtain an excellent magnetic recording medium whose magnetism holding capacity, directivity and electromagnetic characteristics will not deteriorate by using an interface activator, obtained through the reaction of specific amine on phosphate of alcohole, for magnetic powder of more than pH4.
CONSTITUTION: As an interface activator used to improve the dispersiveness of a coating material for the magnetic recording medium of a video tape, etc., an interface activator is used which can be obtained through the reaction of amine of less than C16 with only a carbon chain in a hydrophobic group on phosphate, so that when magnetic powder (γFe2O3, etc.) of higher than pH4 is used, electromagnetic characteristics of the magnetic recording medium will never deteriorated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10260978A JPS5532209A (en) | 1978-08-23 | 1978-08-23 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10260978A JPS5532209A (en) | 1978-08-23 | 1978-08-23 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5532209A true JPS5532209A (en) | 1980-03-06 |
Family
ID=14331973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10260978A Pending JPS5532209A (en) | 1978-08-23 | 1978-08-23 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5532209A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011219611A (en) * | 2010-04-08 | 2011-11-04 | San Nopco Ltd | Metal oxide particle dispersion |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018006A (en) * | 1973-06-19 | 1975-02-26 | ||
JPS5040103A (en) * | 1973-08-16 | 1975-04-12 |
-
1978
- 1978-08-23 JP JP10260978A patent/JPS5532209A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018006A (en) * | 1973-06-19 | 1975-02-26 | ||
JPS5040103A (en) * | 1973-08-16 | 1975-04-12 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011219611A (en) * | 2010-04-08 | 2011-11-04 | San Nopco Ltd | Metal oxide particle dispersion |
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