CA1042277A - Magnetic recording medium and method of making the same - Google Patents
Magnetic recording medium and method of making the sameInfo
- Publication number
- CA1042277A CA1042277A CA168,110A CA168110A CA1042277A CA 1042277 A CA1042277 A CA 1042277A CA 168110 A CA168110 A CA 168110A CA 1042277 A CA1042277 A CA 1042277A
- Authority
- CA
- Canada
- Prior art keywords
- binder
- magnetic
- polymer
- powder
- surface active
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 133
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000843 powder Substances 0.000 claims abstract description 106
- 239000011230 binding agent Substances 0.000 claims abstract description 104
- 239000011247 coating layer Substances 0.000 claims abstract description 58
- 239000006247 magnetic powder Substances 0.000 claims abstract description 53
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 37
- 239000010410 layer Substances 0.000 claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 13
- 229920000620 organic polymer Polymers 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 129
- 239000006185 dispersion Substances 0.000 claims description 69
- 229920000642 polymer Polymers 0.000 claims description 60
- 239000006229 carbon black Substances 0.000 claims description 35
- 239000000741 silica gel Substances 0.000 claims description 31
- 229910002027 silica gel Inorganic materials 0.000 claims description 31
- 239000002904 solvent Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 239000003960 organic solvent Substances 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 claims description 5
- 229920002857 polybutadiene Polymers 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000001879 gelation Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 25
- 230000006872 improvement Effects 0.000 abstract description 9
- 239000000377 silicon dioxide Substances 0.000 description 47
- 239000003973 paint Substances 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 17
- 239000000314 lubricant Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- -1 alkylene radical Chemical group 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 229910000423 chromium oxide Inorganic materials 0.000 description 8
- 239000007858 starting material Substances 0.000 description 8
- 239000004815 dispersion polymer Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004006 olive oil Substances 0.000 description 5
- 235000008390 olive oil Nutrition 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 239000004634 thermosetting polymer Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 229920006385 Geon Polymers 0.000 description 4
- 229920013646 Hycar Polymers 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000011877 solvent mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 229940117975 chromium trioxide Drugs 0.000 description 3
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920005749 polyurethane resin Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 125000005442 diisocyanate group Chemical group 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 229940067606 lecithin Drugs 0.000 description 2
- 235000010445 lecithin Nutrition 0.000 description 2
- 239000000787 lecithin Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 229920006163 vinyl copolymer Polymers 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229910002016 Aerosil® 200 Inorganic materials 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Chemical group 0.000 description 1
- 239000001301 oxygen Chemical group 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
- G11B5/7028—Additives, e.g. crosslinking agents
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/7013—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dispersing agent
Landscapes
- Paints Or Removers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3557772A JPS5119971B2 (enrdf_load_stackoverflow) | 1972-04-07 | 1972-04-07 | |
| JP3557672A JPS5137002B2 (enrdf_load_stackoverflow) | 1972-04-07 | 1972-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1042277A true CA1042277A (en) | 1978-11-14 |
Family
ID=26374567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA168,110A Expired CA1042277A (en) | 1972-04-07 | 1973-04-06 | Magnetic recording medium and method of making the same |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1042277A (enrdf_load_stackoverflow) |
| DE (1) | DE2317409C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2181874B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1431854A (enrdf_load_stackoverflow) |
| IT (1) | IT983703B (enrdf_load_stackoverflow) |
| NL (1) | NL7304945A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1167408A (en) * | 1980-09-22 | 1984-05-15 | Hao-Jan Chang | Electron beam curing of magnetic media |
| JPS6087429A (ja) * | 1983-10-19 | 1985-05-17 | Victor Co Of Japan Ltd | 磁気記録媒体及びその製造方法 |
| DE3473958D1 (en) * | 1984-10-31 | 1988-10-13 | Ibm Deutschland | Magnetic disc and process for producing it |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3404997A (en) * | 1965-05-10 | 1968-10-08 | Ampex | Magnetic recording media |
| US3412044A (en) * | 1965-06-03 | 1968-11-19 | Ampex | Diamine soap as dispersant in magnetic tape formulations |
-
1973
- 1973-04-05 GB GB1636573A patent/GB1431854A/en not_active Expired
- 1973-04-06 CA CA168,110A patent/CA1042277A/en not_active Expired
- 1973-04-06 DE DE19732317409 patent/DE2317409C3/de not_active Expired
- 1973-04-06 IT IT2271773A patent/IT983703B/it active
- 1973-04-09 FR FR7312689A patent/FR2181874B1/fr not_active Expired
- 1973-04-09 NL NL7304945A patent/NL7304945A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7304945A (enrdf_load_stackoverflow) | 1973-10-09 |
| DE2317409B2 (de) | 1980-11-20 |
| IT983703B (it) | 1974-11-11 |
| FR2181874A1 (enrdf_load_stackoverflow) | 1973-12-07 |
| DE2317409A1 (de) | 1973-10-11 |
| DE2317409C3 (de) | 1981-11-12 |
| GB1431854A (en) | 1976-04-14 |
| FR2181874B1 (enrdf_load_stackoverflow) | 1977-02-18 |
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