JPS57165464A - Composition for magnetic coating - Google Patents

Composition for magnetic coating

Info

Publication number
JPS57165464A
JPS57165464A JP5099981A JP5099981A JPS57165464A JP S57165464 A JPS57165464 A JP S57165464A JP 5099981 A JP5099981 A JP 5099981A JP 5099981 A JP5099981 A JP 5099981A JP S57165464 A JPS57165464 A JP S57165464A
Authority
JP
Japan
Prior art keywords
composition
group
polyisocyanate
organic solvent
sulfonic acid
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
JP5099981A
Other languages
Japanese (ja)
Inventor
Tsuyoshi Hachitsuka
Yutaka Mizumura
Hideo Miyake
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.)
Toyobo Co Ltd
Original Assignee
Toyobo 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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP5099981A priority Critical patent/JPS57165464A/en
Publication of JPS57165464A publication Critical patent/JPS57165464A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)

Abstract

PURPOSE: To prepare the titled composition having excellent magnetic properties, adhesivity to polyester films, and storage stability, by compounding a polyurethane resin containing a specific amount of sulfonic acid metal salt group, fine magnetic particles, and an organic solvent having a specific boiling point, at specific ratios.
CONSTITUTION: The objective composition is prepared e.g. by mixing (A) 1W 27wt% polyurethane resin containing 4.0W9.9 equivalent of sulfonic acid metal salt group per 106g of polymer (preferably resin having a molecular weight of 8,000W 100,000 and obtained from a polyisocyanate and a polyhydroxy compound wherein the ratio of the NCO group in the polyisocyanate to the OH group in the polyhydroxy compound is 0.5W2/1) with (B) 12W57% magnetic fine powder (e.g. γ-Fe2O3 having spinel structure, etc.), (C) 40W80% organic solvent having a boiling point of 50W170°C, and if necessary, (D) 2W100pts., based on 100pts. of the component (A), of an isocyanate compound, etc.
USE: High-performance magnetic tape or sheet.
COPYRIGHT: (C)1982,JPO&Japio
JP5099981A 1981-04-03 1981-04-03 Composition for magnetic coating Pending JPS57165464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5099981A JPS57165464A (en) 1981-04-03 1981-04-03 Composition for magnetic coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5099981A JPS57165464A (en) 1981-04-03 1981-04-03 Composition for magnetic coating

Publications (1)

Publication Number Publication Date
JPS57165464A true JPS57165464A (en) 1982-10-12

Family

ID=12874480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5099981A Pending JPS57165464A (en) 1981-04-03 1981-04-03 Composition for magnetic coating

Country Status (1)

Country Link
JP (1) JPS57165464A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666784A (en) * 1985-07-26 1987-05-19 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS62184621A (en) * 1986-02-08 1987-08-13 Toyobo Co Ltd Magnetic recording medium
JPS62246130A (en) * 1986-04-18 1987-10-27 Fuji Photo Film Co Ltd Magnetic recording medium
JPH01115920A (en) * 1987-10-29 1989-05-09 Mitsubishi Kasei Corp Polyurethane resin for magnetic recording medium
JPH0490599U (en) * 1990-12-21 1992-08-06

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54157603A (en) * 1978-06-01 1979-12-12 Toyo Boseki Magnetic recording medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54157603A (en) * 1978-06-01 1979-12-12 Toyo Boseki Magnetic recording medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666784A (en) * 1985-07-26 1987-05-19 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS62184621A (en) * 1986-02-08 1987-08-13 Toyobo Co Ltd Magnetic recording medium
JPH0682456B2 (en) * 1986-02-08 1994-10-19 東洋紡績株式会社 Magnetic recording medium
JPS62246130A (en) * 1986-04-18 1987-10-27 Fuji Photo Film Co Ltd Magnetic recording medium
JPH01115920A (en) * 1987-10-29 1989-05-09 Mitsubishi Kasei Corp Polyurethane resin for magnetic recording medium
JPH0490599U (en) * 1990-12-21 1992-08-06

Similar Documents

Publication Publication Date Title
JPS55139634A (en) Magnetic recording medium
JPS54138409A (en) Magnetic recording medium
JPS57165464A (en) Composition for magnetic coating
EP0373116A3 (en) Ion-conducting compositions and their use
JPS5771556A (en) Magnetic tape having leader tape
JPS57109867A (en) Polyurethane-based coating composition
JPS57212250A (en) Aqueous dispersion
JPS563430A (en) Biaxially oriented polyester film for magnetic tape
JPS54119904A (en) Magnetic recording medium
JPS5630425A (en) Preparation of polyurethane resin
JPS5674824A (en) Magnetic recording medium
JPS55133470A (en) Cold-curable traffic paint
JPS55157661A (en) Automobile glass run
JPS54120642A (en) Cathode-deposition-type electrocoating composition
JPS5466941A (en) Electrodeposition coating compound
JPS5684759A (en) Coat composition for paint
JPS5354235A (en) Resin compositions for coating powder
JPS54135823A (en) Pigment paste for coloring polyurethane
JPS52114622A (en) Powder coating composition
JPS54135507A (en) Magnetic recording medium
JPS5434394A (en) Preparation of polyester resin for powder coating
JPS54154427A (en) Polyurethane coating composition
JPS5671829A (en) Manufacture for magnetic recording medium
JPS5670021A (en) Polyurethane resin and coating composition
JPS57135822A (en) Polyester resin composition