JPS5515279A - Processing method for magnetic powder - Google Patents
Processing method for magnetic powderInfo
- Publication number
- JPS5515279A JPS5515279A JP8900778A JP8900778A JPS5515279A JP S5515279 A JPS5515279 A JP S5515279A JP 8900778 A JP8900778 A JP 8900778A JP 8900778 A JP8900778 A JP 8900778A JP S5515279 A JPS5515279 A JP S5515279A
- Authority
- JP
- Japan
- Prior art keywords
- mole
- thereafter
- powder
- magnetic powder
- metacrylic
- 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 improve a dispersion property in a binder by adding monomer such as metacrylic acid and others, acryl series monomer and copolymer starter and precipitate to a water medium containing a dispersed magnetic powder and thereafter by covering the powder surface with those components.
CONSTITUTION: A monomer containing 10 mole % of metacrylic acid, 45 mole % of metacrylic methyl and 45 mole % of acrylic acid ethyl is primarily added to 10 part of γ-Fe2O3 magnetic powder. Successively, karium sulfide 0.003 part, sodium sulfate 0.5 part and water 100 part are added to the above composition to heat and provide a repolymer for them, thereafter being washed, filtered and dried. Thereafter this powder is mixed together with vinyl chloride - vinyl acetate - vinyl alcohol copolymer and methyl isobutyl ketone - toluen mixed solvent to be kneaded together and is coated and dried on a polyester film. By such a process, a magnetic tape with a great retangular rate can be prepared.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8900778A JPS5515279A (en) | 1978-07-20 | 1978-07-20 | Processing method for magnetic powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8900778A JPS5515279A (en) | 1978-07-20 | 1978-07-20 | Processing method for magnetic powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5515279A true JPS5515279A (en) | 1980-02-02 |
Family
ID=13958785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8900778A Pending JPS5515279A (en) | 1978-07-20 | 1978-07-20 | Processing method for magnetic powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515279A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573224A (en) * | 1980-06-05 | 1982-01-08 | Toshiba Corp | Magnetic recording body |
JPS5834368U (en) * | 1981-08-31 | 1983-03-05 | エスエムケイ株式会社 | Contacts for sliding connectors |
US5015384A (en) * | 1988-05-25 | 1991-05-14 | Burke Dennis A | Anaerobic digestion process |
WO1992020628A1 (en) * | 1988-05-25 | 1992-11-26 | Burke Dennis A | Anaerobic digestion process |
US5306422A (en) * | 1988-09-07 | 1994-04-26 | Lenox Institute Of Water Technology, Inc. | Compact clarifier system for municipal waste water treatment |
US5310485A (en) * | 1992-09-30 | 1994-05-10 | Darling-Delaware Company, Inc. | Process for dissolved gas flotation in anaerobic wastewater treatment |
US5419833A (en) * | 1987-06-24 | 1995-05-30 | Amoco Corporation | Apparatus for treatment of wastewater |
US5501903A (en) * | 1994-07-29 | 1996-03-26 | Minnesota Mining And Manufacturing Company | Magnetic recording medium having a binder system including a non halogenated vinyl polymer and a polyurethane polymer each with specified pendant groups |
US5510187A (en) * | 1993-04-27 | 1996-04-23 | Minnesota Mining And Manufacturing Company | Magnetic recording medium whose magnetic layer incorporates nonhalogenated vinyl copolymer and specified polyurethane polymer |
US5674604A (en) * | 1995-03-31 | 1997-10-07 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising magnetic particles, binder, and a non halogenated vinyl oligomer dispersant |
US6113786A (en) * | 1996-04-15 | 2000-09-05 | Western Environmental Engineering Company | Anaerobic treatment process with removal of inorganic material |
US6309547B1 (en) | 1996-04-15 | 2001-10-30 | Western Environmental Engineering Company | Anaerobic treatment process with removal of nonbiodegradable organic material |
-
1978
- 1978-07-20 JP JP8900778A patent/JPS5515279A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573224A (en) * | 1980-06-05 | 1982-01-08 | Toshiba Corp | Magnetic recording body |
JPS5834368U (en) * | 1981-08-31 | 1983-03-05 | エスエムケイ株式会社 | Contacts for sliding connectors |
US5419833A (en) * | 1987-06-24 | 1995-05-30 | Amoco Corporation | Apparatus for treatment of wastewater |
WO1992020628A1 (en) * | 1988-05-25 | 1992-11-26 | Burke Dennis A | Anaerobic digestion process |
US5015384A (en) * | 1988-05-25 | 1991-05-14 | Burke Dennis A | Anaerobic digestion process |
US5306422A (en) * | 1988-09-07 | 1994-04-26 | Lenox Institute Of Water Technology, Inc. | Compact clarifier system for municipal waste water treatment |
US5310485A (en) * | 1992-09-30 | 1994-05-10 | Darling-Delaware Company, Inc. | Process for dissolved gas flotation in anaerobic wastewater treatment |
US5437785A (en) * | 1992-09-30 | 1995-08-01 | Darling International | Apparatus for dissolved gas flotation in anaerobic wastewater treatment |
US5510187A (en) * | 1993-04-27 | 1996-04-23 | Minnesota Mining And Manufacturing Company | Magnetic recording medium whose magnetic layer incorporates nonhalogenated vinyl copolymer and specified polyurethane polymer |
US5501903A (en) * | 1994-07-29 | 1996-03-26 | Minnesota Mining And Manufacturing Company | Magnetic recording medium having a binder system including a non halogenated vinyl polymer and a polyurethane polymer each with specified pendant groups |
US5712345A (en) * | 1994-07-29 | 1998-01-27 | Minnesota Mining And Manufacturing Company | Binder system for magnetic media |
US5674604A (en) * | 1995-03-31 | 1997-10-07 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising magnetic particles, binder, and a non halogenated vinyl oligomer dispersant |
US6113786A (en) * | 1996-04-15 | 2000-09-05 | Western Environmental Engineering Company | Anaerobic treatment process with removal of inorganic material |
US6309547B1 (en) | 1996-04-15 | 2001-10-30 | Western Environmental Engineering Company | Anaerobic treatment process with removal of nonbiodegradable organic material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5515279A (en) | Processing method for magnetic powder | |
JPS57133521A (en) | Magnetic recording medium | |
JPS5744227A (en) | Magnetic recording medium | |
JPS54151009A (en) | Magnetic recording medium | |
JPS543129A (en) | Coating powder composition | |
JPS5515278A (en) | Processing method for magnetic powder | |
JPS5515281A (en) | Processing method for magnetic powder | |
JPS54119904A (en) | Magnetic recording medium | |
JPS5515280A (en) | Processing method for magnetic powder | |
JPS5515282A (en) | Processing method for magnetic powder | |
JPS51140635A (en) | Carrier coating composition for electrostatic photography | |
JPS5764328A (en) | Magnetic recording medium | |
JPS5221033A (en) | Water resin composition | |
JPS551648A (en) | Manufacture for magnetic recording medium | |
JPS54147815A (en) | Magnetic recording medium | |
JPS54147814A (en) | Magnetic recording medium | |
JPS5528506A (en) | Magnetic recording medium | |
JPS558612A (en) | Magnetic recording medium | |
JPS5577035A (en) | Production of magnetic recording medium | |
JPS5522248A (en) | Magnetic recording meduim | |
JPS5485397A (en) | Magnetic powder | |
JPS54137302A (en) | Magnetic recording medium | |
JPS5532252A (en) | Magnetic recording medium | |
JPS551636A (en) | Magnetic recording medium | |
JPS55129927A (en) | Cleaning tape |