JPS5532209A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

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
Application number
JP10260978A
Other languages
Japanese (ja)
Inventor
Masaharu Nishimatsu
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP10260978A priority Critical patent/JPS5532209A/en
Publication of JPS5532209A publication Critical patent/JPS5532209A/en
Pending legal-status Critical Current

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
JP10260978A 1978-08-23 1978-08-23 Magnetic recording medium Pending JPS5532209A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018006A (en) * 1973-06-19 1975-02-26
JPS5040103A (en) * 1973-08-16 1975-04-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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