JPH02281415A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH02281415A JPH02281415A JP10237389A JP10237389A JPH02281415A JP H02281415 A JPH02281415 A JP H02281415A JP 10237389 A JP10237389 A JP 10237389A JP 10237389 A JP10237389 A JP 10237389A JP H02281415 A JPH02281415 A JP H02281415A
- Authority
- JP
- Japan
- Prior art keywords
- group
- formula
- magnetic
- carbon atoms
- phosphate
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 56
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 23
- -1 alkenyl succinic acid anhydride Chemical compound 0.000 claims abstract description 23
- 239000010452 phosphate Substances 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract 4
- 150000001875 compounds Chemical group 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- 150000001735 carboxylic acids Chemical class 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 150000003609 titanium compounds Chemical class 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 230000001568 sexual effect Effects 0.000 claims description 2
- 150000004756 silanes Chemical class 0.000 claims description 2
- 125000002252 acyl group Chemical group 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 20
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 239000010936 titanium Substances 0.000 abstract description 6
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 229910052719 titanium Inorganic materials 0.000 abstract description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 abstract 2
- 230000000740 bleeding effect Effects 0.000 abstract 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 229910000077 silane Inorganic materials 0.000 abstract 1
- 239000001384 succinic acid Substances 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 description 24
- 239000003973 paint Substances 0.000 description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 16
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 239000000314 lubricant Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 235000014113 dietary fatty acids Nutrition 0.000 description 10
- 239000000194 fatty acid Substances 0.000 description 10
- 229930195729 fatty acid Natural products 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 8
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 8
- 150000004665 fatty acids Chemical class 0.000 description 8
- 238000009472 formulation Methods 0.000 description 8
- 150000001336 alkenes Chemical class 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- 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 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000787 lecithin Substances 0.000 description 3
- 235000010445 lecithin Nutrition 0.000 description 3
- 229940067606 lecithin Drugs 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 150000004671 saturated fatty acids Chemical class 0.000 description 3
- 231100000241 scar Toxicity 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 235000021314 Palmitic acid Nutrition 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 235000003441 saturated fatty acids Nutrition 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- TWJNQYPJQDRXPH-UHFFFAOYSA-N 2-cyanobenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1C#N TWJNQYPJQDRXPH-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- SUILOKFDWIILPU-UHFFFAOYSA-N CCC(CO)(CO)CO.N=C=O.N=C=O.N=C=O Chemical compound CCC(CO)(CO)CO.N=C=O.N=C=O.N=C=O SUILOKFDWIILPU-UHFFFAOYSA-N 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 235000021360 Myristic acid Nutrition 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N Myristic acid Natural products CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- MEESPVWIOBCLJW-KTKRTIGZSA-N [(z)-octadec-9-enyl] dihydrogen phosphate Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(O)(O)=O MEESPVWIOBCLJW-KTKRTIGZSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- YTFJQDNGSQJFNA-UHFFFAOYSA-N benzyl dihydrogen phosphate Chemical compound OP(O)(=O)OCC1=CC=CC=C1 YTFJQDNGSQJFNA-UHFFFAOYSA-N 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012933 diacyl peroxide Substances 0.000 description 1
- JTXUVYOABGUBMX-UHFFFAOYSA-N didodecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCC JTXUVYOABGUBMX-UHFFFAOYSA-N 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- LNTZHXQMPUKVNX-UHFFFAOYSA-N docosyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCCCCCOP(O)(O)=O LNTZHXQMPUKVNX-UHFFFAOYSA-N 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- TVACALAUIQMRDF-UHFFFAOYSA-N dodecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(O)=O TVACALAUIQMRDF-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- PHNWGDTYCJFUGZ-UHFFFAOYSA-N hexyl dihydrogen phosphate Chemical compound CCCCCCOP(O)(O)=O PHNWGDTYCJFUGZ-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 150000002440 hydroxy compounds Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000004668 long chain fatty acids Chemical class 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000005634 peroxydicarbonate group Chemical group 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気記録媒体に関する。詳しくは、電磁変換特
性が優れ、保存時のブリード（粉吹き）が無く、走行耐
久性の良好な磁気記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to magnetic recording media. Specifically, the present invention relates to a magnetic recording medium that has excellent electromagnetic conversion characteristics, does not bleed during storage, and has good running durability.
〔従来の技術及び発明が解決しようとする課題〕ビデオ
テープやフロッピーディスク等の磁気記録媒体は、一般
にポリエステルフィルムなどの非磁性支持体上に、磁性
粉末、結合剤樹脂（バインダー）、有機溶剤及びその他
の必要成分からなる磁性塗料を塗着して作られるが、磁
性塗料中の磁性粉を十分に分散解膠して凝集粒子を除い
ておかないと充填密度の大きな均一で平滑な磁性層を作
ることはできない。[Prior Art and Problems to be Solved by the Invention] Magnetic recording media such as video tapes and floppy disks generally contain magnetic powder, a binder, an organic solvent and a non-magnetic support such as a polyester film. It is made by applying a magnetic paint consisting of other necessary ingredients, but unless the magnetic powder in the magnetic paint is sufficiently dispersed and peptized to remove agglomerated particles, a uniform and smooth magnetic layer with a high packing density can be created. It cannot be made.
磁性粉の凝集粒子による磁性層の不均一は磁気テープの
電磁変換特性及び磁気特性に重大な悪影響を及ぼす。即
ち出力の低下、ノイズの増大、ドロップアウトなどの原
因となる。従って、磁気記録媒体の電磁変換特性及び磁
気特性を向上させるためには磁性粉はできるだけ均一に
分散させる必要がある。Non-uniformity of the magnetic layer due to agglomerated particles of magnetic powder has a serious adverse effect on the electromagnetic conversion characteristics and magnetic properties of the magnetic tape. That is, it causes a decrease in output, an increase in noise, dropouts, etc. Therefore, in order to improve the electromagnetic conversion characteristics and magnetic characteristics of a magnetic recording medium, it is necessary to disperse the magnetic powder as uniformly as possible.
磁性粉の分散性を向上させるために、磁性粉の表面を処
理する方法が提案されている。このような磁性粉の表面
処理剤としてはシランカップリング剤（特開昭５４−７
３１０号公報）、チタンカップリング剤（特開昭５７−
３２２７号公報）、リン酸のポリオキシエチレンアルキ
ル（又はアルキルアリール）モノ又はジエステルの金属
塩（特公昭５４−２９２４３号公報）などがある。In order to improve the dispersibility of magnetic powder, methods of treating the surface of magnetic powder have been proposed. As a surface treatment agent for such magnetic powder, a silane coupling agent (Japanese Patent Application Laid-open No. 54-7
310), titanium coupling agent (JP-A-57-
3227), and metal salts of polyoxyethylene alkyl (or alkylaryl) mono- or diesters of phosphoric acid (Japanese Patent Publication No. 54-29243).
このように、磁性塗料中の磁性粉末の分散性に関して、
多くの研究がなされてきたにもかかわらず、未だ電磁変
換特性の面で十分な磁気記録媒体は得られていない。In this way, regarding the dispersibility of magnetic powder in magnetic paint,
Although much research has been carried out, a magnetic recording medium with sufficient electromagnetic conversion characteristics has not yet been obtained.
またビデオテープ等においては、テープ走行中にヘッド
が汚れを生じ（特にスチルモードで激しい）、またテー
プ自体に傷が付くことがある。このため、磁性層の走行
耐久性を改善する一方策として磁性層中に種々の潤滑剤
を混入することが行われている。Furthermore, in the case of video tapes and the like, the head may become dirty (particularly severe in still mode) while the tape is running, and the tape itself may be scratched. Therefore, as a measure to improve the running durability of the magnetic layer, various lubricants are mixed into the magnetic layer.
従来から使用されている潤滑剤としては直鎖状の飽和或
いは不飽和脂肪酸等があるが、これらの潤滑剤は性能面
では満足されるものとは言い難いのが現状である０例え
ば、ミリスチン酸、パルミチン酸、ステアリン酸等の分
子量の大きい直鎖状飽和脂肪酸を用いた場合には結晶化
しやすく、磁性層の表面に析出（ブリード）することが
ある。結晶化を防ぐために分子量の小さい飽和脂肪酸を
用いると揮発性が増し、効果不良となる。また、オレイ
ン酸、リノール酸、リルン酸等の直鎖状不飽和脂肪酸を
用いた場合には酸化により経時変化を受けやすく安定性
に問題がある。Conventionally used lubricants include linear saturated or unsaturated fatty acids, but it is currently difficult to say that these lubricants are satisfactory in terms of performance.For example, myristic acid When linear saturated fatty acids with large molecular weights such as , palmitic acid, and stearic acid are used, they tend to crystallize and may precipitate (bleed) on the surface of the magnetic layer. If a saturated fatty acid with a small molecular weight is used to prevent crystallization, its volatility will increase and the effect will be poor. Furthermore, when linear unsaturated fatty acids such as oleic acid, linoleic acid, and lilunic acid are used, they are susceptible to changes over time due to oxidation and have stability problems.
またその他の潤滑剤として脂肪酸エステル、パラフィン
等が試されているが、充分な効果を上げているとは言い
難い。Other lubricants such as fatty acid esters and paraffin have been tried, but it is hard to say that they have been sufficiently effective.
本発明者らは、電磁変換特性が優れ、良好な潤滑性が付
与されて、走行耐久性が改善され、保存時のブリードの
ない磁気記録媒体を得るべく鋭意研究の結果本発明に到
達した。The present inventors have arrived at the present invention as a result of intensive research to obtain a magnetic recording medium that has excellent electromagnetic conversion characteristics, is provided with good lubricity, has improved running durability, and does not bleed during storage.
即ち、本発明は、非磁性支持体上に磁性層を塗設してな
る磁気記録媒体において、当該磁性層中に下記化合物群
から選ばれる処理剤（１）及び（Ｉｆ）で表面処理され
た強磁性粉末と、下記化学式（ＩＩＩ）で表される分岐
鎖を有するカルボン酸とを含有することを特徴とする磁
気記録媒体を提供するものである。That is, the present invention provides a magnetic recording medium comprising a magnetic layer coated on a non-magnetic support, in which the surface of the magnetic layer is treated with treating agents (1) and (If) selected from the following compound group. The present invention provides a magnetic recording medium characterized by containing a ferromagnetic powder and a carboxylic acid having a branched chain represented by the following chemical formula (III).
処理剤（Ｉ）；
一分子中に加水分解性アルコキシシラン基を有する有機
シラン化合物及び一分子中に加水分解性チタン基を有す
る有機チタン化合物からなる群より選ばれる一種又は二
種以上の加水分解性化合物。Treatment agent (I): one or more hydrolyzable agents selected from the group consisting of organic silane compounds having a hydrolyzable alkoxysilane group in one molecule and organic titanium compounds having a hydrolyzable titanium group in one molecule sexual compound.
処理剤（ＩＩ）；
下記一般式（１）で表されるリン酸エステル、−般式（
２）で表される無水アルケニルコハク酸、及び一般式（
３）で表されるアルケニルコハク酸又はその塩からなる
群より選ばれる一種又は二種以上の化合物。Treatment agent (II); Phosphate ester represented by the following general formula (1), - general formula (
2), and alkenylsuccinic anhydride represented by the general formula (
3) One or more compounds selected from the group consisting of alkenylsuccinic acids or salts thereof.
（ＲＯ（八〇）ｎ） ＊ＰＯ（ＯＨｈ−ｔ −（１）
分岐鎖を有するカルボン酸（■）；
本発明に用いられる有機シラン化合物は一分子中に加水
分解性アルコキシシラン基を有するものであれば特に限
定されず、反応性官能基を有するもの、有しないものい
ずれでもよい。これらの化合物を例示すると、（ＣＨｉ
） ｚｓｉ （ＯＣＨｉ） ｔ＋Ｃ＋ｄｈｔＳｉ（ＯＣ
ｚＨｓ）ｓｌＣＨｚ＝ＣＨＳｉ （ＯＣＪｓ）３１Ｃｔ
ｈ＝Ｃ（ＣＨｉ）−ＣＯＯＣＪｂＳｉ（ＯＣＨ３）３゜
Ｈ，ＮＣ，Ｈ，ＮＨＣ，Ｈ６Ｓｉ （ＯＣＨ３） ｓ
ｔ ＨｚＮｌ、ＨＪＨＣＪｂＳｉ （ＣＩり （ＯＣＩ
ｈ） ｚ ＋ＨＪＣ３Ｈ６Ｓｉ （ＯＣ２Ｈｓ） ｌ
ＨＪＣＯＮＨＣ３Ｈ６Ｓｉ （ＯＣＪｓ） １フエニル
又はアルキルトリアルコキシシラン１モルと長鎖脂肪酸
１〜２モルとの反応生成物、等をあげることができる。(RO(80)n) *PO(OHh-t −(1)
Carboxylic acid having a branched chain (■); The organosilane compound used in the present invention is not particularly limited as long as it has a hydrolyzable alkoxysilane group in one molecule, and may or may not have a reactive functional group. Any item is fine. Examples of these compounds include (CHi
) zsi (OCHi) t+C+dhtSi(OC
zHs)slCHz=CHSi (OCJs)31Ct
h=C(CHi)-COOCJbSi(OCH3)3゜H,NC,H,NHC,H6Si (OCH3) s
t HzNl, HJHCJbSi (CIri (OCI
h) z +HJC3H6Si (OC2Hs) l
Examples include HJCONHC3H6Si (OCJs), a reaction product of 1 mole of phenyl or alkyltrialkoxysilane and 1 to 2 moles of a long-chain fatty acid.
本発明に用いられる有機チタン化合物としては、一分子
中に加水分解性チタン基を有するものであれば特に限定
されず、これらの化合物を例示すると、ＣＩ （ＣＨ３
） ｔ−０−Ｔｉ（ＯＯＣ−Ｃ？ＨＩ ｓ） ２１ＣＩ
。The organic titanium compound used in the present invention is not particularly limited as long as it has a hydrolyzable titanium group in one molecule. Examples of these compounds include CI (CH3
) t-0-Ti(OOC-C?HI s) 21CI
.
（Ｃ２Ｈ３Ｏ）！ＳｉＣ！Ｈ＆ＮＨＣＯＮＨＣ＆Ｈ１！
ＮＣＯ１（ＣＨｓＯ）：＋５ｉＣＪＪＨＣＪＪＨＣＯＮ
ＨＣｈＨ＋ｔＮＣＯ１（ＣＨ＋０）ｚｓｉ−ＣＪａＮＨ
ＣＪＪＨＣＯＮＨＣｉＨ＋ＪＣ０。(C2H3O)! SiC! H&NHCONHC&H1!
NCO1 (CHsO): +5iCJJHCJJHCON
HChH+tNCO1(CH+0)zsi-CJaNH
CJJHCONHCiH+JC0.
ＣＨ。CH.
ＣＨ（Ｃ）ｌｉ）ｚ−ＯＴｉ＋０ＣＪＪＨＣＪＪＨｚ）
ｓ 。CH(C)li)z-OTi+0CJJHCJJHz)
s.
ＣＩ。C.I.
等をあげることができる。etc. can be given.
本発明に用いられる前記一般式（１）で表わされるリン
酸エステルは、リン酸と炭素数２〜２８の炭化水素基を
有するヒドロキシ化合物あるいはその低級アルキレンオ
キサイド付加物から誘導されるリン酸モノエステル、リ
ン酸ジエステル又はリン酸セスキエステル、或いはリン
酸と炭素数２〜２８の脂肪酸又はその低級アルキレンオ
キサイド付加物から誘導されるリン酸モノエステル、リ
ン酸ジエステル又はリン酸セスキエステルが例示される
。具体的な化合物としては、モノドデシルホスフェート
、モノベンジルホスフェート、ジドデシルホスフェート
、セスキドデシルホスフェート、セスキベンジルホスフ
ェート、セスキプロピルホスフェート、セスキオクチル
ホスフェート、セスキオレイルホスフェート、モノベヘ
ニルホスフェート、モノへキシルホスフェート、ジドデ
シルホスフェート、モノオレイルホスフェート、セスキ
ドデシルポリオキシエチレン（３）ホスフェート、セス
キドデシルポリオキシエチレン（９ンホスフエート、セ
スキノニルフェニルポリオキシエチレン（３）ホスフェ
ート、セスキノニルフェニルポリオキシエチレン００）
ホスフェート、モノドデシルポリオキシエチレン（２）
ホスフェート、モノドデシルポリオキシエチレン（５）
ホスフェート、モノオクタデシルポリオキシエチレン（
５）ホスフェート、セスキオクタデシルポリオキシエチ
レンａωホスフェート、セスキオクチルフェニルポリオ
キシエチレン００）ホスフェート、ジオクチルポリオキ
シエチレン（６）ホスフェート、セスキドデシルポリオ
キシプロピレン（９）ホスフェート、モノオクチルポリ
オキシエチレン０２）ホスフェート、ジノニルフェニル
ポリオキシプロピレン（３）ホスフェート、モノオクタ
デセニルポリオキシプロピレン（８）ホスフェート、
（Ｃｒ ＋ＨｚｓＣＯＯ（ＣＨｚＣＨｚＯ） ＋６）
１．５ＰＯ（Ｏｌｌ） １．５１Ｃ１’ＪＨ３コＣ０
０（ＣＨ２ＣＨ２Ｏ）３ＰＯ（ＯＨ）２、Ｃｒ、Ｈｘｓ
ＣＯＯＣＣｌｈＣＨｔＯ）＋５ＰＯ（ＯＨ）ｔ 。The phosphoric acid ester represented by the general formula (1) used in the present invention is a phosphoric acid monoester derived from phosphoric acid and a hydroxy compound having a hydrocarbon group having 2 to 28 carbon atoms or a lower alkylene oxide adduct thereof. , phosphoric acid diesters or phosphoric acid sesquiesters, or phosphoric acid monoesters, phosphoric acid diesters or phosphoric acid sesquiesters derived from phosphoric acid and fatty acids having 2 to 28 carbon atoms or lower alkylene oxide adducts thereof. Specific compounds include monododecyl phosphate, monobenzyl phosphate, didodecyl phosphate, sesquidodecyl phosphate, sesquibenzyl phosphate, sesquipropyl phosphate, sesquioctyl phosphate, sesquioleyl phosphate, monobehenyl phosphate, monohexyl phosphate, didodecyl. Phosphate, monooleyl phosphate, sesquidodecyl polyoxyethylene (3) phosphate, sesquidodecyl polyoxyethylene (9-phosphate, sesquinonylphenyl polyoxyethylene (3) phosphate, sesquinonylphenyl polyoxyethylene 00)
Phosphate, monododecyl polyoxyethylene (2)
Phosphate, monododecyl polyoxyethylene (5)
Phosphate, monooctadecyl polyoxyethylene (
5) phosphate, sesquioctadecylpolyoxyethylene aω phosphate, sesquioctylphenylpolyoxyethylene 00) phosphate, dioctylpolyoxyethylene (6) phosphate, sesquidodecylpolyoxypropylene (9) phosphate, monooctylpolyoxyethylene 02) phosphate, dinonylphenylpolyoxypropylene (3) phosphate, monooctadecenylpolyoxypropylene (8) phosphate,
(Cr +HzsCOO(CHzCHzO) +6)
1.5PO(Oll) 1.51C1'JH3koC0
0(CH2CH2O)3PO(OH)2, Cr, Hxs
COOCClhCHtO)+5PO(OH)t.
（ＣｓＨ＋＋ＣＯＯ（ＣＣ００（ＣＨｚＣＨｚＰＯ（Ｏ
）Ｉ）等を例示することができる。(CsH++COO(CC00(CHzCHzPO(O
) I) etc. can be exemplified.
本発明に用いられる前記一般式（２）で表わされる無水
アルケニルコハク酸及び一般式（３）で表わされるアル
ケニルコハク酸又はその塩としては、Ｒ゛で示されるア
ルケニル基がブテニル基、ペンテニル基、ヘキセニル基
、オクテニル基、デセニル基、ドデセニル基、ヘキサデ
セニル基、オクタデセニル基であるものなどが挙げられ
る。In the alkenylsuccinic anhydride represented by the general formula (2) and the alkenylsuccinic acid represented by the general formula (3) or a salt thereof used in the present invention, the alkenyl group represented by R is a butenyl group, a pentenyl group, Examples include hexenyl group, octenyl group, decenyl group, dodecenyl group, hexadecenyl group, and octadecenyl group.
本発明において、処理剤（Ｉ）の使用量は、磁性粉１０
０ ｍｕ部に対して０．２〜８重量部、好ましくは０．
５〜５重量部であり、処理剤（ＩＩ）の使用量は磁性粉
１００重量部に対して０．２〜１２重量部、好ましくは
０．２〜１０！！！量部である。In the present invention, the amount of processing agent (I) used is 10
0.2 to 8 parts by weight, preferably 0.0 mu parts.
The amount of processing agent (II) used is 0.2 to 12 parts by weight, preferably 0.2 to 10 parts by weight, per 100 parts by weight of the magnetic powder. ! ! It is a quantity part.
本発明において、上記処理剤ＣＩ）及び（ＩＩ）を用い
て、磁性粉を処理する方法としては、ベンゼン、トルエ
ン、キシレン、メチルエチルケトン等の不活性有機溶媒
中に磁性粉と、処理剤（１）及び（ＩＩ）とを−括に添
加し、室温又は加熱しつつ撹拌する方法等が例示できる
。In the present invention, a method of treating magnetic powder using the above-mentioned processing agents CI) and (II) includes adding the processing agent (1) to the magnetic powder in an inert organic solvent such as benzene, toluene, xylene, or methyl ethyl ketone. An example of such a method is to add and (II) in batches and stir at room temperature or while heating.
本発明に用いられる磁性粉としては針状形の微細なＴ
ＦｅｔＯｚ 、ＦｅｚＯａ 、Ｃｒａｇのような金属
酸化物、またＣｏ被着Ｔ −ＦｅｚＯ３、Ｃｏドープγ
−Ｆｅ、Ｏ，のような加工処理を施したγ−Ｆｅｚ０２
、鉄メタル粉、微小板状のバリウムフェライト及びその
Ｆｅ原子の一部がＴｉ、 Ｃｏ、 Ｚｎ、 Ｖ、 Ｎｂ
等の１種又は２種以上で置換された磁性粉、Ｃｏ、 Ｆ
ｅ−ｃｏ、 Ｆｅ−Ｎｉ等の金属又は合金の超微粉な
どが挙げられる。これらのうち鉄メタル粉は特に化学的
安定性が悪いからこの改良のためニッケル、コバルト、
チタン、ケイ素、アルミニウムなどを金属原子、塩及び
酸化物の形で少量加えたり表面処理されることがあるが
、これらを用いることもできる。鉄メタル粉は又その安
定化のため弱い酸化性雰囲気の中で表面に薄い酸化皮膜
を作らせることがあるが、このように処理されたメタル
粉を用いることもできる。The magnetic powder used in the present invention is fine needle-shaped T.
Metal oxides such as FetOz, FezOa, Crag, as well as Co-coated T-FezO3, Co-doped γ
-γ-Fez02 processed like Fe, O,
, iron metal powder, platelet-like barium ferrite and some of its Fe atoms are Ti, Co, Zn, V, Nb
Magnetic powder substituted with one or more of Co, F, etc.
Examples include ultrafine powder of metals or alloys such as e-co and Fe-Ni. Among these, iron metal powder has particularly poor chemical stability, so in order to improve this, nickel, cobalt,
Titanium, silicon, aluminum, etc. may be added in small amounts or surface treated in the form of metal atoms, salts, and oxides, and these may also be used. In order to stabilize iron metal powder, a thin oxide film may be formed on the surface in a weakly oxidizing atmosphere, and metal powder treated in this manner may also be used.
本発明で用いられる式（■）で表される分岐鎖を有する
脂肪酸は、Ｇ、 １． Ｎ１ｋｉｓｈｉｒｌ （Ｉｚｖ
。The fatty acid having a branched chain represented by the formula (■) used in the present invention is G, 1. N1kishirl (Izv
.
Ａｋａｄ、 Ｎａｕｋ、 ５ＳＳＲ，１９６１，１４８
７）の方法に従い、脂肪酸とオレフィンとの付加反応に
よって容易に製造することが出来る。Akad, Nauk, 5SSR, 1961, 148
According to method 7), it can be easily produced by an addition reaction between a fatty acid and an olefin.
ここで用いられる脂肪酸としては炭素数６〜２６の脂肪
酸であり、例えばカプロン酸、カプリル酸、ラウリン酸
、ミリスチン酸、パルミチン酸、ステアリン酸等が挙げ
られる。またオレフィンとしては炭素数６〜３２のオレ
フィンであり、好ましくは炭素数８〜２８のα−オレフ
ィンが挙げられる。The fatty acid used here is a fatty acid having 6 to 26 carbon atoms, and examples thereof include caproic acid, caprylic acid, lauric acid, myristic acid, palmitic acid, and stearic acid. Further, the olefin includes an olefin having 6 to 32 carbon atoms, preferably an α-olefin having 8 to 28 carbon atoms.
また、オレフィンを脂肪酸に付加させる際には、有機過
酸化物をラジカル発生剤として使用することが必要であ
り、この有機過酸化物としては、ジアルキルパーオキサ
イド、ハイドロパーオキサイド、ケトンパーオキサイド
、パーオキシエステル、ジアシルパーオキサイド、バー
オキシジカーボネイト類等が挙げられる。具体的にはジ
ターシ中リープチルパーオキサイド、ジクミルパーオキ
サイド、ターシャリ−ブチルハイドロパーオキサイドな
どが挙げられる。有機過酸化物の使用量としては、オレ
フィンの使用量に対して０．０１〜５モル倍が通常用い
られる。In addition, when adding olefins to fatty acids, it is necessary to use organic peroxides as radical generators, and examples of organic peroxides include dialkyl peroxides, hydroperoxides, ketone peroxides, Examples include oxyesters, diacyl peroxides, peroxydicarbonates, and the like. Specific examples include diteric acid, Liebtyl peroxide, dicumyl peroxide, and tert-butyl hydroperoxide. The amount of organic peroxide used is usually 0.01 to 5 times the amount of olefin used by mole.
脂肪酸にオレフィンを付加させる反応の条件としては一
般的には５０〜２５０℃に加熱された脂肪酸にオレフィ
ンと有機過酸化物を添加するのが通常であるが、この方
法に限定されるものではない。The reaction conditions for adding an olefin to a fatty acid are generally to add an olefin and an organic peroxide to a fatty acid heated to 50 to 250°C, but the method is not limited to this method. .
上記反応によって本発明で用いられる式（ＩＩＩ）で表
される分岐鎖を有するカルボン酸が生成する反応経路を
下記式（ＩＶ）に示すが、実際には、複雑な副反応を伴
い生成する化合物は複数となる。該カルボン酸は上記反
応生成物から蒸留等の方法で精製し、単離することが出
来る。本発明では、該カルボン酸は精製して用いる場合
もあるが、反応生成物の混合状態のまま使用しても本発
明の効果が失われるものではない。The reaction route in which the branched carboxylic acid represented by the formula (III) used in the present invention is produced by the above reaction is shown in the following formula (IV), but in reality, the compound produced involves complicated side reactions. is plural. The carboxylic acid can be purified and isolated from the reaction product by a method such as distillation. In the present invention, the carboxylic acid may be used after being purified, but the effects of the present invention will not be lost even if the reaction product is used in a mixed state.
反応経路式（ＩＶ）
ＲｔＣＨｔＣＯＯＨ＋ ｍ ＣＨｚ＝ＣＨＲ冨（ＩＩＩ
）
本発明に用いられる式（ＩＩＩ）で表されるカルボン酸
は分岐構造により高分子量化（不揮発化）しながらも液
体であるため、潤滑効果が高い。Reaction route formula (IV) RtCHtCOOH+ m CHz=CHR
) The carboxylic acid represented by formula (III) used in the present invention has a high molecular weight (non-volatile) due to its branched structure and is liquid, so it has a high lubricating effect.
この式（ＩＩＩ）で表されるカルボン酸の配合量は、磁
性粉１００重量部に対し、０．２〜１２重量部、好まし
くは０．５〜８重量部である。また通常潤滑剤として使
用されている脂肪酸エステルを併用することもできる。The amount of the carboxylic acid represented by formula (III) is 0.2 to 12 parts by weight, preferably 0.5 to 8 parts by weight, based on 100 parts by weight of the magnetic powder. Furthermore, fatty acid esters commonly used as lubricants can also be used together.
本発明の磁性層に用いることができるバインダーの例と
しては、ポリウレタン、ポリエステル、ポリ塩化ビニル
、塩化ビニル／酢酸ビニル共重合体、ポリアクリロニト
リル、ニトリルゴム、エポキシ樹脂、アルキッド樹脂、
ポリアミド、ポリアクリル酸エステル、ポリメタクリル
酸エステル、ポリ酢酸ビニル、ポリビニルブチラール、
ポリ塩化ビニリデン、硝化綿、マレイン酸変性塩化ビニ
ル／酢酸ビニル共重合体、エチルセルロースなどが挙げ
られる。これらは単独で用いてもよいが、通常２種類以
上混合して用いられる。また、樹脂の硬さを調節するた
め可塑剤や硬化剤を加えて使用することもできる。Examples of binders that can be used in the magnetic layer of the present invention include polyurethane, polyester, polyvinyl chloride, vinyl chloride/vinyl acetate copolymer, polyacrylonitrile, nitrile rubber, epoxy resin, alkyd resin,
Polyamide, polyacrylic ester, polymethacrylic ester, polyvinyl acetate, polyvinyl butyral,
Examples include polyvinylidene chloride, nitrified cotton, maleic acid-modified vinyl chloride/vinyl acetate copolymer, and ethyl cellulose. Although these may be used alone, two or more types are usually used in combination. Furthermore, a plasticizer or a hardening agent may be added to adjust the hardness of the resin.
また、バインダーの配合量は一般に磁性粉１００重量部
に対して１５〜６０重量部である。最も大きな結合力を
有するバインダーであっても１５重量部より少ないとき
は磁性塗膜の強度が弱く、また基板と磁性塗膜の接着力
が不足となる。また６０重量部より多いときには磁性塗
膜中の磁性粉濃度が小さくなって再生出力が低下して不
利である。また塗膜特性が低下することもある。Further, the amount of the binder blended is generally 15 to 60 parts by weight per 100 parts by weight of the magnetic powder. Even if the binder has the highest binding strength, if the amount is less than 15 parts by weight, the strength of the magnetic coating will be weak and the adhesive strength between the substrate and the magnetic coating will be insufficient. On the other hand, if the amount is more than 60 parts by weight, the concentration of magnetic powder in the magnetic coating film becomes small, which is disadvantageous because the reproduction output decreases. Furthermore, the properties of the coating film may deteriorate.
本発明の磁気記録媒体の磁性層には以上の成分の他、こ
の分野で通常使用される研磨剤、帯電防止剤等の添加剤
を加えることができる。In addition to the above-mentioned components, additives such as abrasives and antistatic agents commonly used in this field can be added to the magnetic layer of the magnetic recording medium of the present invention.
また本発明においては、磁気記録媒体の非磁性支持体の
裏面（磁性層とは反対側）にバックコート層を設けるこ
ともできる。このバックコート層に用いられるバインダ
ーとしては、前記の各種バインダーを用いることができ
るが、その中でも特にポリウレタン樹脂と硝化綿を併用
し、さらに硬化剤としてのポリイソシアネートと単一平
均粒体が０．０１−０．５μのカーボンブラツクを用い
るのが好ましい。バックコート層におけるバインダー／
カーボンブラックの重量比は４０／６０〜８０／２０と
するのがよい。In the present invention, a back coat layer can also be provided on the back surface (opposite side to the magnetic layer) of the nonmagnetic support of the magnetic recording medium. As the binder used for this back coat layer, the various binders described above can be used, but among them, polyurethane resin and nitrified cotton are particularly used in combination, polyisocyanate as a hardening agent, and single average particles of 0. Preferably, 0.01-0.5 micron carbon black is used. Binder in back coat layer/
The weight ratio of carbon black is preferably 40/60 to 80/20.
本発明の磁気記録媒体を製造する際に用いられる非磁性
支持体としては、ポリエチレンテレフタレートのような
ポリエステル；ポリエチレン、ポリプロピレン等のポリ
オレフィン；セルローストリアセテート、セルロースジ
アセテート等のセルロース誘導体；ポリカーボネート；
ポリ塩化ビニル；ポリイミド；芳香族ポリアミド等のプ
ラスチック；Ａｌ、ＣＬＩ等の金属；紙等が使用される
。形態はフィルム、テープ、シート、ディスク、カード
、ドラム等いずれでもよい。Non-magnetic supports used in producing the magnetic recording medium of the present invention include polyesters such as polyethylene terephthalate; polyolefins such as polyethylene and polypropylene; cellulose derivatives such as cellulose triacetate and cellulose diacetate; polycarbonate;
Polyvinyl chloride; polyimide; plastics such as aromatic polyamide; metals such as Al and CLI; paper, etc. are used. The form may be a film, tape, sheet, disk, card, drum, etc.
また支持体表面はコロナ放電、放射線、紫外線等で処理
されていても、あるいは適当な樹脂でプレコートされて
いてもよい。Further, the surface of the support may be treated with corona discharge, radiation, ultraviolet light, etc., or may be precoated with a suitable resin.
以下、゛実施例により本発明を更に詳細に説明するが、
本発明はこれらの実施例に限定されるものではない。Hereinafter, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to these examples.
尚、例中の部及び％は特記しない限り重量基準である。In addition, parts and percentages in the examples are based on weight unless otherwise specified.
実施例１
〈磁性粉の表面処理〉
反応容器に、窒素雰囲気下でＦｅ−Ｎｉ合金粉末（表面
積５０ｍ！／ｇ、 Ｐｅ ： Ｎ１＝９５ ： ５ 、
Ｈｃ １４８００ｅ）１００重量部、処理剤としてＣ
＋ｏＨｚｔＳｉ （ＯＣＪｓ）＋を１．５重量部、（Ｃ
Ｉ ２Ｈｚ ｓｏ （Ｃ１ｌ□ＣＨｚＯ）ｔ） ＰＯ（
Ｏｆ（）ｚを４重量部、トルエンを３００重量部入れ、
室温で一時間撹拌後更に８０°Ｃで一時間撹拌した。反
応熟成後、冷却し、上澄を傾斜法にて除去し、ロータリ
ーエバポレーターにより減圧下でトルエンを留去して、
処理磁性粉を得た。Example 1 <Surface treatment of magnetic powder> Fe-Ni alloy powder (surface area 50 m!/g, Pe:N1=95:5,
Hc 14800e) 100 parts by weight, C as a processing agent
1.5 parts by weight of +oHztSi (OCJs)+, (C
I 2Hz so (C1l□CHzO)t) PO(
Add 4 parts by weight of Of()z and 300 parts by weight toluene,
After stirring at room temperature for one hour, the mixture was further stirred at 80°C for one hour. After the reaction was aged, it was cooled, the supernatant was removed by decanting, and the toluene was distilled off under reduced pressure using a rotary evaporator.
A treated magnetic powder was obtained.
く磁性層の形成〉
次にこの処理磁性粉を用いた下記塗料配合物を五十嵐機
械製造■製の６筒式サンドグラインダーで４時間混合後
、混合物にコロネー） Ｌ（商品名１日本ポリウレタン
工業■製のトリメチロールプロパントリイソシアナート
）４重量部を添加し、更に１５分間混合を行った後、濾
過してガラスピーズを分離し、磁性塗料を調製した。Formation of magnetic layer> Next, the following paint formulation using this treated magnetic powder was mixed for 4 hours in a 6-tube sand grinder manufactured by Igarashi Kikai Seisakusho, and then the mixture was coronet) L (Product name 1 Nippon Polyurethane Industries) After adding 4 parts by weight of trimethylolpropane triisocyanate) and mixing for an additional 15 minutes, the glass beads were separated by filtration to prepare a magnetic coating material.
この塗料を１０ｊｍ厚のＰＥＴフィルム上に乾燥膜厚が
３−になるように塗布し、塗膜を５０００ガウスにて磁
場配向処理し乾燥して、ＰＥＴフィルム上に磁性層を形
成した０次いで、磁性層にカレンダー処理を施した。This paint was applied onto a PET film with a thickness of 10 m so that the dry film thickness was 3 mm, and the paint film was magnetically aligned at 5000 Gauss and dried to form a magnetic layer on the PET film. The magnetic layer was calendered.
・磁性層塗料配合
処理磁性粉 １００ 部カーボ
ンブラック（平均粒子径２５ｒ＋ｍ） ３α−ＡｈＯ
ｓ （平均粒子径０．３陣） １０ＶＡＧＨ”
１３ニツポラン２３０４
” １０潤滑剤
表１参照メチルエチルケトン
１００トルエン ５０シク
ロヘキサノン １００（注）
＄１ ：ユニオンカーバイド社製の塩化ビニル／酢酸ビ
ニル／ポリビニルアルコ
ール共重合体
傘２ ：日本ポリウレタン工業■製のポリウレタン樹脂
〈バックコート層の形成〉
下記バックコート塗料配合の配合物をボールミルで９６
時間混合後、混合物にコロネー）Ｌ２０重量部を添加し
、更に３０分間混合を行い、バックコート塗料を調製し
た。この塗料を前記磁性層の形成されたＰＥＴフィルム
の裏面に乾燥膜厚が０．５−になるように塗布し、塗膜
を乾燥してバックコート層を形成した。・Magnetic layer paint blended magnetic powder 100 parts Carbon black (average particle size 25r+m) 3α-AhO
s (average particle size 0.3 groups) 10VAGH”
13 Nituporan 2304
”10 Lubricant
See Table 1 Methyl ethyl ketone
100 Toluene 50 Cyclohexanone 100 (Note) $1: Vinyl chloride/vinyl acetate/polyvinyl alcohol copolymer umbrella manufactured by Union Carbide Company 2: Polyurethane resin manufactured by Nippon Polyurethane Industries (Formation of back coat layer) The following back coat paint formulation 96 in a ball mill.
After mixing for a period of time, 20 parts by weight of Coronet) L was added to the mixture, and the mixture was further mixed for 30 minutes to prepare a back coat paint. This coating material was applied to the back surface of the PET film on which the magnetic layer was formed so that the dry film thickness was 0.5 -, and the coating film was dried to form a back coat layer.
然る後、磁性層及びバンクコート層の形成されたＰＥＴ
フィルムを８１幅にスリットし、８ミリビデオ力セント
に装填し、評価用カセットとした。After that, the magnetic layer and bank coat layer were formed on the PET.
The film was slit to a width of 81 mm and loaded into an 8 mm video outlet to form a cassette for evaluation.
・バックコート塗料配合
カーボンブラック（平均粒子径２０ｎｍ） １００部ニ
トロセルロース ５０ニツポラン２
３０４ ５０レシチン
２メチルエチルケトン
４００トルエン ２００実
施例２〜５
表１に示す表面処理磁性粉を用い、磁性塗料配合のうち
の潤滑剤を同じ表１に示す化合物・添加量にした他は実
施例１と同様にして８ｍｍビデオテープを作成した。・Back coat paint blended carbon black (average particle size 20 nm) 100 parts Nitrocellulose 50 Nitsuporan 2
304 50 lecithin
2 methyl ethyl ketone
400 toluene 200 Examples 2 to 5 An 8 mm video tape was prepared in the same manner as in Example 1, except that the surface-treated magnetic powder shown in Table 1 was used, and the lubricant in the magnetic paint formulation was changed to the compound and amount added shown in Table 1. I made a tape.
比較例１〜２
磁性塗料配合のうち潤滑剤を表１に示す化合物・添加量
にした他は実施例１と同様にして８ｍｒａビデオテープ
を作成した。Comparative Examples 1-2 An 8 mra videotape was prepared in the same manner as in Example 1, except that the lubricant in the magnetic paint formulation was changed to the compound and amount shown in Table 1.
比較例３
磁性粉の表面処理を省略し、磁性塗料配合のうち潤滑剤
を表１に示す化合物・添加量にし、レシチン３重量部を
追加した他は、実施例１と同様にして８ｍｍビデオテー
プを作成した。Comparative Example 3 An 8 mm videotape was produced in the same manner as in Example 1, except that the surface treatment of the magnetic powder was omitted, the lubricant in the magnetic paint formulation was changed to the compound and amount shown in Table 1, and 3 parts by weight of lecithin was added. It was created.
実施例６
反応容器中に表面積が４０ｍ”／ｇ、保磁力６５００ｅ
のＣｏ被被着−Ｆｅ、０．を１００重量部、処理剤とし
Ｃし
て ＣＨ３−ＣＨｏ−Ｔｉ （ＯＣＪＪＨＣｚｌｌＪＨ
・ｚ） ｓ ２重量部、を６００重量部入れ、室温で１
時間、更に６０゛Ｃで１時間撹拌した。反応容器の上澄
を傾斜法で除去し、スラリー状の処理粉を減圧下で乾燥
することにより処理粉末を得た。Example 6 Surface area in reaction vessel 40 m”/g, coercive force 6500e
Co-deposition of -Fe, 0. 100 parts by weight, C as a processing agent and CH3-CHo-Ti (OCJJHCzllJH
・Z) Add 2 parts by weight of s, and 600 parts by weight, and add 1 part by weight at room temperature.
The mixture was further stirred at 60°C for 1 hour. The supernatant of the reaction vessel was removed by a decanting method, and the slurry-like treated powder was dried under reduced pressure to obtain a treated powder.
以下、実施例１の方法に準じて磁性塗料を調製し、厚さ
１４．５−のＰＥＴフィルム上に乾燥膜厚が４．５−に
なるように塗布し、１５００ガウスにて磁場配向処理し
乾燥して１／２インチ幅にスリット後、ＶＨＳカセット
に充填し評価用カセットとした。Hereinafter, a magnetic paint was prepared according to the method of Example 1, and applied onto a 14.5-thick PET film to a dry film thickness of 4.5-mm, and subjected to magnetic field orientation treatment at 1500 Gauss. After drying and slitting it into 1/2 inch width, it was filled into a VHS cassette to prepare a cassette for evaluation.
実施例７〜９
表１に示す表面処理磁性粉を用い、磁性塗料配合のうち
の潤滑剤として同じく表１に示す化合物・添加量にした
他は実施例６と同様にしてＶＨＳビデオテープを作成し
た。Examples 7 to 9 VHS video tapes were made in the same manner as in Example 6, except that the surface-treated magnetic powder shown in Table 1 was used and the compound and amount added as shown in Table 1 were used as the lubricant in the magnetic paint formulation. did.
比較例４
磁性塗料配合のうち潤滑剤を表１に示す化合物・添加量
に変更した他は実施例８と同様にしてＶＨＳビデオテー
プを作成した。Comparative Example 4 A VHS videotape was prepared in the same manner as in Example 8, except that the lubricant in the magnetic paint formulation was changed to the compound and amount added shown in Table 1.
比較例５
磁性粉の表面処理を省略し、磁性塗料配合のうち潤滑剤
を表１に示す化合物・添加量にし、レシチン３重量部を
追加した他は実施例６と同様にしてＶＨＳビデオテープ
を作成した。Comparative Example 5 A VHS videotape was produced in the same manner as in Example 6, except that the surface treatment of the magnetic powder was omitted, the lubricant in the magnetic paint formulation was changed to the compound and amount shown in Table 1, and 3 parts by weight of lecithin was added. Created.
以上の実施例１〜９及び比較例１〜５で得られた８ｍｍ
ビデオテープ又はＶＨＳビデオテープの特性を下記に示
す方法により評価した。8 mm obtained in Examples 1 to 9 and Comparative Examples 1 to 5 above
The characteristics of the videotape or VHS videotape were evaluated by the method shown below.
表２にその結果を示す。Table 2 shows the results.
尚、表２の評価で用いたビデオデツキは、実施例１〜５
及び比較例１〜３は８ ｍｍＶＴＲデツキにより、実施
例６〜９及び比較例４〜５はＶＩＩＳビデオデツキによ
った。The video decks used in the evaluation in Table 2 were those of Examples 1 to 5.
Comparative Examples 1 to 3 were conducted using an 8 mm VTR deck, and Examples 6 to 9 and Comparative Examples 4 to 5 were conducted using a VIIS video deck.
く評価方法〉
（ａ） Ｃ／Ｎ比
■シバツク製の電磁変換測定システムによった。８ Ｉ
Ｉ＋ｍＶＴＲでは５ＭＨｚ 、 ＶＨ３では４ ＭＨｚ
でそれぞれ記録した際のノイズスペクトラムを観測し、
スペクトラムよりＣハ比を求めた。Evaluation method> (a) C/N ratio ■ An electromagnetic conversion measurement system manufactured by Shibaku Co., Ltd. was used. 8 I
5MHz for I+mVTR, 4MHz for VH3
Observe the noise spectrum when recording each
The C ratio was determined from the spectrum.
８１ＩＩＩＩＩＶＴＲテは比較例３、Ｖｌ（Ｓでは比較
例５をそれぞれ基準とし、その差をｄＢで表示した。Comparative Example 3 was used as the standard for 81IIIVTR, and Comparative Example 5 was used as the standard for Vl (S), and the difference was expressed in dB.
（ｂ） スチルテスト
（ｂ＋） ヘッド汚れ
各デツキのスチルモードにて実施例１〜５及び比較例１
〜３は１時間、また実施例６〜９及び比較例４〜５は３
時間走行させたのちデツキのヘッドをエタノールを含浸
させた綿棒で拭き取り、綿棒の汚れ具合を目視で判定。(b) Still test (b+) Head dirty In still mode for each deck Examples 1 to 5 and Comparative Example 1
~3 for 1 hour, and Examples 6 to 9 and Comparative Examples 4 to 5 for 3 hours.
After running for a certain amount of time, wipe the deck head with a cotton swab impregnated with ethanol, and visually check how dirty the swab is.
Ａ・・・汚れが全くないか、あっても確認が困難。A: It is difficult to check whether there is any dirt or not.
Ｂ・・・汚れは多少あるが問題のない程度である。B: There is some dirt, but it is not a problem.
Ｃ・・・汚れがかなり激しい。C: Very dirty.
（ｂ２）テープの傷付き性 ヘッドの走行跡を目視にて判定する。(b2) Scratch resistance of tape Visually judge the running trace of the head.
Ａ・・・全く傷跡がないかまたは確認が困難。A: There is no scar at all or it is difficult to see.
Ｂ・・・傷跡が明らかに存在するが問題のない程度であ
る。B: Scars are clearly present, but to a non-problematic extent.
Ｃ・・・傷跡がかなり激しい。C: The scar is quite severe.
（Ｃ） ブリードテスト
得られた磁気テープを６０°Ｃ１１２時間、−５”Ｃ，
１２時間のサイクルで７日間保存後、最後に２０°Ｃで
２時間放置後、磁性層表面を目視又は反射型光学顕微鏡
で観察し、白粉の有無にて判定した。(C) Bleed test The obtained magnetic tape was heated at 60°C for 112 hours at -5"C.
After storage for 7 days in a 12-hour cycle, and finally at 20° C. for 2 hours, the surface of the magnetic layer was observed visually or with a reflective optical microscope, and the presence or absence of white powder was determined.
Claims (1)
おいて、当該磁性層中に下記化合物群から選ばれる処理
剤（ I ）及び（II）で表面処理された強磁性粉末と、
下記化学式（III）で表される分岐鎖を有するカルボン
酸とを含有することを特徴とする磁気記録媒体。 処理剤（ I ）； 一分子中に加水分解性アルコキシシラン基を有する有機
シラン化合物及び一分子中に加水分解性チタン基を有す
る有機チタン化合物からなる群より選ばれる一種又は二
種以上の加水分解性化合物。 処理剤（II）； 下記一般式（１）で表されるリン酸エステル、一般式（
２）で表される無水アルケニルコハク酸、及び一般式（
３）で表されるアルケニルコハク酸又はその塩からなる
群より選ばれる一種又は二種以上の化合物。 〔ＲＯ（ＡＯ）＿ｎ〕＿ＬＰＯ（ＯＨ）＿３＿−＿Ｌ・
・・（１）〔式（１）中、 Ｒ：炭素数２〜２８の炭化水素基又は炭素数２〜２８の
アシル基 Ａ：炭素数２〜４のアルキレン基 ｎ：０又は１〜３０の整数 ＿Ｌ：１、１．５又は２〕 ▲数式、化学式、表等があります▼・・・（２） ▲数式、化学式、表等があります▼・・・（３） 〔式（２）、（３）中、 Ｒ’：炭素数４〜３０のアルケニル基 Ｘ、Ｙ：共にあるいは別々にＨ、Ｎａ、Ｋ又はＮＨ＿４
〕分岐鎖を有するカルボン酸（III）； ▲数式、化学式、表等があります▼・・・（III） 〔式中、 Ｒ＿１：炭素数４〜２４のアルキル基 Ｒ＿２：炭素数４〜３０のアルキル基 ｍ：２又は３〕[Scope of Claims] A magnetic recording medium comprising a magnetic layer coated on a non-magnetic support, in which the surface of the magnetic layer is treated with treatment agents (I) and (II) selected from the following compound group. ferromagnetic powder,
A magnetic recording medium characterized by containing a branched carboxylic acid represented by the following chemical formula (III). Treatment agent (I): one or more hydrolyzing agents selected from the group consisting of organic silane compounds having a hydrolyzable alkoxysilane group in one molecule and organic titanium compounds having a hydrolyzable titanium group in one molecule sexual compound. Treatment agent (II): Phosphate ester represented by the following general formula (1), general formula (
2), and alkenylsuccinic anhydride represented by the general formula (
3) One or more compounds selected from the group consisting of alkenylsuccinic acids or salts thereof. [RO(AO)_n]_LPO(OH)_3_-_L・
...(1) [In formula (1), R: hydrocarbon group having 2 to 28 carbon atoms or acyl group having 2 to 28 carbon atoms A: alkylene group having 2 to 4 carbon atoms n: 0 or 1 to 30 Integer_L: 1, 1.5 or 2] ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(2) ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(3) [Formula (2), ( 3), R': alkenyl group having 4 to 30 carbon atoms X, Y: together or separately H, Na, K or NH_4
] Carboxylic acid (III) having a branched chain; ▲ Numerical formulas, chemical formulas, tables, etc. are available ▼... (III) [In the formula, R_1: Alkyl group having 4 to 24 carbon atoms R_2: Alkyl group having 4 to 30 carbon atoms Group m: 2 or 3]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10237389A JPH02281415A (en) | 1989-04-21 | 1989-04-21 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10237389A JPH02281415A (en) | 1989-04-21 | 1989-04-21 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02281415A true JPH02281415A (en) | 1990-11-19 |
Family
ID=14325660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10237389A Pending JPH02281415A (en) | 1989-04-21 | 1989-04-21 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02281415A (en) |
-
1989
- 1989-04-21 JP JP10237389A patent/JPH02281415A/en active Pending
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