JPS55129934A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS55129934A
JPS55129934A JP3706879A JP3706879A JPS55129934A JP S55129934 A JPS55129934 A JP S55129934A JP 3706879 A JP3706879 A JP 3706879A JP 3706879 A JP3706879 A JP 3706879A JP S55129934 A JPS55129934 A JP S55129934A
Authority
JP
Japan
Prior art keywords
approximately
recording medium
magnetic
epoxy resin
thermoplastic
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
JP3706879A
Other languages
Japanese (ja)
Inventor
Hiroaki Hiratsuka
Junichi Shimada
Shigefumi Hosokawa
Yonosuke Ito
Akira Okazoe
Osamu Saito
Kozaburo Nakamura
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.)
Maxell Ltd
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Hitachi Maxell 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 Nippon Telegraph and Telephone Corp, Hitachi Maxell Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3706879A priority Critical patent/JPS55129934A/en
Publication of JPS55129934A publication Critical patent/JPS55129934A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To obtain a magnetic recording medium superior in resistance to wear and heat-proof property, by using a mixture binder, which is obtained by crossliking polyurethane and epoxy resin with polyvalent isocyanate, to form a magnetic layer.
CONSTITUTION: A magnetic paint containing the 100pts.wt. of thermoplastic polyuretahne [Estan (made in Goodrich), Clisvon (made in Dia Nippon Ink K.K.), etc.,] (a), the approximately 10W40pts.wt. of thermoplastic epoxy resin [Eponol (made is Shell), Epiclon (made in Dai Nippon Ink K.K.), etc.,] (b), polyvalent isocyanate (for example, 2,4-toluene disocyanate) (c) of approximately 5W15wt% for the polymer overall quantity, and magnetic powder (d) is applied to the support material (for example, a polyethylene terephthalate film) and is heated at approximately 40W100°C for approximately 6W24 hours to be subjected to head treatment, thus obtaining a recording medium.
COPYRIGHT: (C)1980,JPO&Japio
JP3706879A 1979-03-30 1979-03-30 Magnetic recording medium Pending JPS55129934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3706879A JPS55129934A (en) 1979-03-30 1979-03-30 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3706879A JPS55129934A (en) 1979-03-30 1979-03-30 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS55129934A true JPS55129934A (en) 1980-10-08

Family

ID=12487223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3706879A Pending JPS55129934A (en) 1979-03-30 1979-03-30 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS55129934A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107452461A (en) * 2016-05-31 2017-12-08 Skc株式会社 Magnetic piece and the antenna equipment including magnetic piece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825923A (en) * 1971-08-11 1973-04-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825923A (en) * 1971-08-11 1973-04-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107452461A (en) * 2016-05-31 2017-12-08 Skc株式会社 Magnetic piece and the antenna equipment including magnetic piece

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