JPS63103416A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS63103416A JPS63103416A JP24839286A JP24839286A JPS63103416A JP S63103416 A JPS63103416 A JP S63103416A JP 24839286 A JP24839286 A JP 24839286A JP 24839286 A JP24839286 A JP 24839286A JP S63103416 A JPS63103416 A JP S63103416A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- resin
- binder resin
- amino group
- polyurethane resin
- 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
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 26
- 239000006249 magnetic particle Substances 0.000 claims abstract description 17
- 125000003277 amino group Chemical group 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920005862 polyol Polymers 0.000 abstract description 14
- 150000003077 polyols Chemical class 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 10
- 229920001228 polyisocyanate Polymers 0.000 abstract description 6
- 239000005056 polyisocyanate Substances 0.000 abstract description 6
- 125000001302 tertiary amino group Chemical group 0.000 abstract description 3
- 239000004970 Chain extender Substances 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 18
- 239000003973 paint Substances 0.000 description 15
- -1 polyethylene adipate Polymers 0.000 description 14
- 238000000576 coating method Methods 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 125000005442 diisocyanate group Chemical group 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical group NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 3
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium dioxide Chemical compound O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 2
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- ZKSBDEFDWSDNPW-UHFFFAOYSA-N 1-butoxy-2,4-diisocyanatobenzene Chemical compound CCCCOC1=CC=C(N=C=O)C=C1N=C=O ZKSBDEFDWSDNPW-UHFFFAOYSA-N 0.000 description 1
- SZBXTBGNJLZMHB-UHFFFAOYSA-N 1-chloro-2,4-diisocyanatobenzene Chemical compound ClC1=CC=C(N=C=O)C=C1N=C=O SZBXTBGNJLZMHB-UHFFFAOYSA-N 0.000 description 1
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
- DZDVHNPXFWWDRM-UHFFFAOYSA-N 2,4-diisocyanato-1-methoxybenzene Chemical compound COC1=CC=C(N=C=O)C=C1N=C=O DZDVHNPXFWWDRM-UHFFFAOYSA-N 0.000 description 1
- VXQILLTWRZPRQF-UHFFFAOYSA-N 2,4-diisocyanato-1-propan-2-ylbenzene Chemical compound CC(C)C1=CC=C(N=C=O)C=C1N=C=O VXQILLTWRZPRQF-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- 229940105325 3-dimethylaminopropylamine Drugs 0.000 description 1
- HMNAAVUZNWPXDC-UHFFFAOYSA-N 3-n,3-n-dimethylbutane-1,3-diamine Chemical compound CN(C)C(C)CCN HMNAAVUZNWPXDC-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AEZZSRCTSQADDX-UHFFFAOYSA-N N=C=O.N=C=O.CC1=CC(C)=CC(C)=C1 Chemical compound N=C=O.N=C=O.CC1=CC(C)=CC(C)=C1 AEZZSRCTSQADDX-UHFFFAOYSA-N 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 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
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 238000010296 bead milling Methods 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical class OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- KQWGXHWJMSMDJJ-UHFFFAOYSA-N cyclohexyl isocyanate Chemical compound O=C=NC1CCCCC1 KQWGXHWJMSMDJJ-UHFFFAOYSA-N 0.000 description 1
- YQLZOAVZWJBZSY-UHFFFAOYSA-N decane-1,10-diamine Chemical compound NCCCCCCCCCCN YQLZOAVZWJBZSY-UHFFFAOYSA-N 0.000 description 1
- IUNMPGNGSSIWFP-UHFFFAOYSA-N dimethylaminopropylamine Chemical compound CN(C)CCCN IUNMPGNGSSIWFP-UHFFFAOYSA-N 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- QOHMWDJIBGVPIF-UHFFFAOYSA-N n',n'-diethylpropane-1,3-diamine Chemical compound CCN(CC)CCCN QOHMWDJIBGVPIF-UHFFFAOYSA-N 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical group 0.000 description 1
- 229940100684 pentylamine Drugs 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000921 polyethylene adipate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
- 229910006297 γ-Fe2O3 Inorganic materials 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、磁気テープ、磁気シート、磁気ディスク等の
磁気記録媒体に関し、更に詳しくは、その磁性層の表面
平滑性、耐久性および磁気特性等に優れた高性能な磁気
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 such as magnetic tapes, magnetic sheets, and magnetic disks. The present invention relates to a high-performance magnetic recording medium with excellent performance.
(従来の技術)
従来、オーディオ機器、ビデオR器、コンピューター等
に用いる磁気記録媒体は、ポリエステルフィルム等の如
き一1磁性の支持体上に、磁性粒Y・、バインダー樹脂
および打機溶剤からなる磁性塗料から磁性層を形成して
得られる。(Prior Art) Conventionally, magnetic recording media used in audio equipment, video recorders, computers, etc. are composed of magnetic particles Y, a binder resin, and a press solvent on a magnetic support such as a polyester film. Obtained by forming a magnetic layer from magnetic paint.
このような磁性層の形成は、磁性粒Yを、バインダー樹
脂を含む11機溶剤中に分散させた磁性塗料を非磁性支
持体に塗布したり、あるいは転写したりすることことに
よって形成されている。Such a magnetic layer is formed by applying or transferring a magnetic paint in which magnetic particles Y are dispersed in a solvent containing a binder resin to a non-magnetic support. .
従来、バインダー樹脂としては、ポリエステル系樹脂、
セルロース系樹脂、ポリウレタン系樹脂、フェノール系
樹脂、エポキシ系樹脂、ポリアミド系樹脂あるいはアク
リル酸エステル、メタクリル酸エステル、スチレン、ア
クリロニトリル、ブタジェン、ビニルエステル、塩化ビ
ニル、塩化ビニリデン、アクリルアミド、メタクリルア
ミド等の重合体または共重合体が用いられてきたが、充
分な表面ゝY平滑性分散性、耐久性、磁気特性を存する
磁性層は得られなかった。Conventionally, binder resins include polyester resins,
Cellulose resins, polyurethane resins, phenolic resins, epoxy resins, polyamide resins, acrylic esters, methacrylic esters, styrene, acrylonitrile, butadiene, vinyl esters, vinyl chloride, vinylidene chloride, acrylamide, methacrylamide, etc. Although polymers or copolymers have been used, a magnetic layer with sufficient surface smoothness, dispersibility, durability, and magnetic properties has not been obtained.
特に、ポリウレタン系樹脂は高耐久性であるが、it′
1′、粒子との相〃作用が弱く、充分な分散性、表面平
滑性を得ることか難しかった。それはこれらの磁性粒子
−が有機溶剤中において強大な凝集性を有するため、そ
のままでは安定な磁性塗料、ひいては磁気記録媒体を得
ることができないためである。In particular, polyurethane resins are highly durable, but
1', the interaction with the particles was weak, making it difficult to obtain sufficient dispersibility and surface smoothness. This is because these magnetic particles have a strong cohesive property in an organic solvent, and therefore it is impossible to obtain a stable magnetic paint or a magnetic recording medium as is.
そのために従来は、磁性粒子−の分散安定性を図るため
に各種の分散剤が提案され、江つ使用されている。For this purpose, various dispersants have been proposed and used in order to improve the dispersion stability of magnetic particles.
(発明か解決しようとしている問題点)しかしながら、
従来の分散剤では、電性粒子−の強大な凝集力に打ち勝
つことができず、一旦分散した磁性粒子−が短時間内で
再凝集するため、磁性塗料の調製後直ちに使用しなけれ
ばならないという問題があり、磁性塗料および磁気記録
媒体の生Il性の点で種々の欠点がある。(The invention or the problem the problem is being solved) However,
Conventional dispersants cannot overcome the strong cohesive force of electrical particles, and once dispersed magnetic particles re-agglomerate within a short period of time, so they must be used immediately after preparing the magnetic paint. There are various drawbacks in terms of the quality of magnetic coatings and magnetic recording media.
史に、このようにしても、従来の分散剤は、使用したバ
インダー樹脂と本Tτ的に異なる小〜中程度の分子−9
の有機化合物であるため、磁性層の形成後にその表面に
移行し、記録ヘッドを損なう専科々の問題を生じるもの
であった。Historically, even with this method, conventional dispersants contain small to medium molecules -9 that differ in terms of Tτ from the binder resin used.
Because it is an organic compound, it migrates to the surface of the magnetic layer after it is formed, causing problems that damage the recording head.
従って、F記の如き問題を生じる多量の分散剤を使用す
ることなく、磁性粒子の強大な凝集力を打破して安定な
磁性塗料ひいては磁気記録媒体を提供し得るバインダー
樹脂が強く要望されている。Therefore, there is a strong demand for a binder resin that can overcome the strong cohesive force of magnetic particles and provide a stable magnetic paint and eventually a magnetic recording medium without using large amounts of dispersants that cause problems such as those described in F. .
本発明者は、上述の如き従来技術の欠点を解決し、L記
の如き要望に応えるべく鋭意研究の結果、磁気記録媒体
の製造にあたり、使用する磁性塗料に特定のバインダー
樹脂を使用するときは、種々の問題を生じる分散剤を実
質上使用することなく、上述の如き従来技術の欠点が解
決されることを知見して本発明を完成した。As a result of intensive research in order to solve the drawbacks of the prior art as described above and to meet the demands as described in L., the present inventor has discovered that when using a specific binder resin in the magnetic paint used in the production of magnetic recording media, The present invention was completed based on the finding that the above-mentioned drawbacks of the prior art can be solved without substantially using dispersants that cause various problems.
(問題点を解決するための手段)
すなわち、本発明は、非磁性支持体上に、@性粒子−を
バインダー樹脂中に分散せしめた磁性層を設けてなる磁
気記録媒体において、上記バインダー樹脂がt鎖および
/または側鎖にアミノ基を有するポリウレタン系樹脂単
独または他のバインダー樹脂との混合物からなることを
特徴とする磁気記録媒体である。(Means for Solving the Problems) That is, the present invention provides a magnetic recording medium in which a magnetic layer in which @ particles are dispersed in a binder resin is provided on a non-magnetic support. The present invention is a magnetic recording medium characterized by being made of a polyurethane resin having amino groups in the t-chain and/or side chain, alone or in a mixture with other binder resins.
本発明を更に詳細に説明すると、本発明で使用し、本発
明を第1に特徴づけるバインダー樹脂はt鎖および/ま
たは側鎖にアミノ基を有するポリウレタン系樹脂である
。To explain the present invention in more detail, the binder resin used in the present invention and which primarily characterizes the present invention is a polyurethane resin having an amino group in the t-chain and/or side chain.
このような特定のポリウレタン系樹脂はいずれの方法に
よって調製してもよいが、好ましい製造方法は、常法に
従ってポリオールと有機ポリイソシアネート化合物から
、必要に応じて3n伸長剤を用いてポリウレタン系樹脂
を製造するに際して、第1級〜第3級アミノ基または4
級化されたアミノ基を有するポリオールを用いることに
よって製造することができる。このようなアミノ基を有
するポリオールとして、特に本発明において好ましいも
のは、例えば下記−・般式(1)または(2)で表され
るものが挙げられる。Such a specific polyurethane resin may be prepared by any method, but a preferred manufacturing method is to prepare a polyurethane resin from a polyol and an organic polyisocyanate compound according to a conventional method, using a 3N extender as necessary. During production, primary to tertiary amino groups or
It can be produced by using a polyol having graded amino groups. Particularly preferred polyols having such an amino group in the present invention include those represented by the following general formula (1) or (2).
R−r−N−R6
上記式中のR,、R2およびR4は−((:ll□トま
たは−((:lI□Cl1R70) n−(nは1〜3
0の数値であり、R7は水素原子またはメチル基である
)であり、R3,R5およびR6はC3〜C2゜のアル
キル基である。R-r-N-R6 R,, R2 and R4 in the above formula are -((:ll□to or -((:lI□Cl1R70) n-(n is 1 to 3
0 and R7 is a hydrogen atom or a methyl group), and R3, R5 and R6 are C3 to C2° alkyl groups.
上記(1)で示されるような構造をもつものとして、 N−メチルジェタノールアミン、 N−エチルジェタノールアミン、 N−プロピルジブロバノールアミン。As having the structure shown in (1) above, N-methyljetanolamine, N-ethyljetanolamine, N-propyldibrobanolamine.
N−ブチルジブロバノールアミン、
N−ベンチルジブタノールアミン、
N−シクロへキシルジェタノールアミン等、あるいはこ
れらのエチレンオキサイド、プロピレンオキサイド等の
アルキレンオキサイドやε−カプロラクトン等のカプロ
ラクトンを付加させたもの、更にはメチルアミン、エチ
ルアミン、プロピルアミン、ブチルアミン、ペンチルア
ミン、ヘキシルアミン等に上記の如きアルキレンオキサ
イドやカプロラクトンを付加させたもの等が挙げられる
。N-butyldibrobanolamine, N-bentyldibutanolamine, N-cyclohexylgetanolamine, etc., or those to which alkylene oxides such as ethylene oxide and propylene oxide or caprolactones such as ε-caprolactone are added, Further examples include those obtained by adding the above alkylene oxide or caprolactone to methylamine, ethylamine, propylamine, butylamine, pentylamine, hexylamine, etc.
ト記(2)で示されるような構造をもつものとしては、
3−ジメチルアミノプロピルアミン、
3−ジメチルアミノブチルアミン、
3−ジエチルアミノプロピルアミン、
4−シブロビルアミノデトラメチレンアミン、6−シブ
チルアミノへキサメチレンジアミン等の1級および3級
アミノ基を有する物にエチレンオキサイド、プロピレン
オキサイド等のアルキレンオキサイド、ε−カプロラク
トンの様なカプロラクトンを付加して得られるものが挙
げられる。Those having the structure shown in (2) include 3-dimethylaminopropylamine, 3-dimethylaminobutylamine, 3-diethylaminopropylamine, 4-sibrobylaminodetramethyleneamine, 6-sibutylamino Examples include those obtained by adding alkylene oxides such as ethylene oxide and propylene oxide, and caprolactones such as ε-caprolactone to substances having primary and tertiary amino groups such as hexamethylene diamine.
1−記のアミノ基金イ「ポリオールは中、独で使用して
もよく、また従来公知の一般的なポリオールと併用して
もよく、併用する場合には、アミノ基含有ポリオールは
ポリオール全体の1重量%以l二を占めるのがよい。こ
のような他のポリオールとして好ましいものとしては、
例えば、分子量が300〜4.000の
ポリエチレンアジペート、
ポリエヂレンプロピレンアジベート、
ポリエチレン・ブチレンアジペート、
ポリジエチレンアシベート、
ポリブチレンアジペート、
ポリエチレンサクシネート、
ポリブチレンサクシネート、
ポリエチレンセバケート、
ポリブチレンセバケート、
ポリテトラメチレンエーテルグリコール、ポリ−ε−カ
プロラクトンジオール、
ポリへキサメチレンアジペート、
カーボネートポリオール、
ポリプロピレングリコール等が挙げられる。1-The amino group-containing polyol may be used alone or in combination with conventionally known general polyols, and when used in combination, the amino group-containing polyol accounts for 1% of the entire polyol. It is preferable that the polyol accounts for at least 1% by weight.As such other polyols, preferable examples include
For example, polyethylene adipate, polyethylene propylene adipate, polyethylene butylene adipate, polydiethylene acybate, polybutylene adipate, polyethylene succinate, polybutylene succinate, polyethylene sebacate, polybutylene sebacate, with a molecular weight of 300 to 4,000. carbonate, polytetramethylene ether glycol, poly-ε-caprolactone diol, polyhexamethylene adipate, carbonate polyol, polypropylene glycol, and the like.
本発明において使用する有機ポリイソシアネートとは、
脂肪族あるいは万古族化合物中に少なくとも2個のイソ
シアネート個を有する化合物であって、従来からポリウ
レタン系樹脂の合成原料として広く使用されている。The organic polyisocyanate used in the present invention is
It is a compound having at least two isocyanate groups in an aliphatic or aliphatic compound, and has been widely used as a synthetic raw material for polyurethane resins.
これらの公知の有機ポリイソシアネートはいずれも本発
明において有用である。特に好ましい有機ポリイソシア
ネートを挙げねば以下の通りであトルエン−2,4−ジ
イソシアネート、4−メトキシ−1,3−フェニレンジ
イソシアネート、
4−イソプロピル−1,3−フェニレンジイソシアネー
ト、
4−クロル−1,3−フェニレンジイソシアネート、
4−ブトキシ−1,3−フェニレンジイソシアネート、
2.4−ジイソシアネート−ジフェニルエーテル。Any of these known organic polyisocyanates are useful in the present invention. Particularly preferred organic polyisocyanates are as follows: toluene-2,4-diisocyanate, 4-methoxy-1,3-phenylene diisocyanate, 4-isopropyl-1,3-phenylene diisocyanate, 4-chloro-1,3 -phenylene diisocyanate, 4-butoxy-1,3-phenylene diisocyanate, 2,4-diisocyanate-diphenyl ether.
メシチレンジイソシアネート、
4.4−メチレンビス(フェニルイソシアネート)、
シュリレンジイソシアネート、
1.5−ナフタレンジイソシアネート、ヘンジジンジイ
ソシアネート、
0−ニトロベンジジンジイソシアネート、4.4−ジイ
ソシアネートジベンジル、1.4−テトラメチレンジイ
ソシアネート、1.6−テトラメチレンジイソシアネー
ト、1.10−デカメチレンジイソシアネート、1.4
−シクロヘキシレンジイソシアネート、キシリレンジイ
ソシアネート、
4.4−メチレンビス(シクロヘキシルイソシアネート
)、
1.5−デトラヒドロナフタレンシイソシアネート、
更に、これらの41機ポリイソシアネートと他の化合物
との付加体等も使用できる。Mesitylene diisocyanate, 4.4-methylenebis(phenylisocyanate), shrylene diisocyanate, 1.5-naphthalene diisocyanate, henzidine diisocyanate, 0-nitrobenzidine diisocyanate, 4.4-dibenzyl diisocyanate, 1.4-tetramethylene diisocyanate, 1.6-tetramethylene diisocyanate, 1.10-decamethylene diisocyanate, 1.4
- Cyclohexylene diisocyanate, xylylene diisocyanate, 4.4-methylenebis(cyclohexylisocyanate), 1.5-detrahydronaphthalene diisocyanate, and adducts of these 41 polyisocyanates with other compounds can also be used. .
鎖伸長剤としては、 エチレングリコール、 プロピレングリコール、 ジエチレングリコール、 1.4−ブタンジオール、 1.6−ヘキサンジオール、 エチレンジアミン、 1.2−プロピレンジアミン、 トリメチレンジアミン、 テトラメチレンジアミン、 ヘキサメチレンジアミン、 デカメチレンジアミン、 イソホロンジアミン、 m−キシリレンジアミン、 ヒドラジン、水等が挙げられる。As a chain extender, ethylene glycol, Propylene glycol, diethylene glycol, 1.4-butanediol, 1.6-hexanediol, ethylenediamine, 1.2-propylene diamine, trimethylenediamine, tetramethylenediamine, hexamethylene diamine, decamethylene diamine, isophoronediamine, m-xylylenediamine, Examples include hydrazine and water.
本発明の磁気記録媒体は、磁性層を形成するためのバイ
ンダー樹脂として1.上記の如き特定のバインダー樹脂
を使用することをしたる特徴とするものであり、特に好
ましいものは分子量が約3万〜50万程度のものである
。また本発明においては、上記特定のバインダー樹脂の
使用に際し、従来公知のバインダー樹脂を任意の割合で
併用することができる。The magnetic recording medium of the present invention uses 1. as a binder resin for forming a magnetic layer. A special feature is the use of a specific binder resin as described above, and a particularly preferred one has a molecular weight of approximately 30,000 to 500,000. Furthermore, in the present invention, when using the above-mentioned specific binder resin, conventionally known binder resins can be used in combination in any proportion.
併用できるバインダー樹脂としては1例えば、塩化ビニ
ル系樹脂、
塩化ビニリデン系樹脂。Examples of binder resins that can be used in combination include vinyl chloride resins and vinylidene chloride resins.
塩化ビニル/酢酸ビニル/ビニルアルコール共重合系樹
脂、
アルキッド系樹脂。Vinyl chloride/vinyl acetate/vinyl alcohol copolymer resin, alkyd resin.
エポキシ系樹脂、
アクリロニトリル−ブタジェン系樹脂、ポリウレタン−
V−樹脂、
ポリウレア系樹脂、
ニトロセルロース系樹脂、
ポリブチラール系樹脂、
ポリエステル系樹脂、
シリコーン系樹脂、
メラミン系樹脂。Epoxy resin, acrylonitrile-butadiene resin, polyurethane
V-resin, polyurea resin, nitrocellulose resin, polybutyral resin, polyester resin, silicone resin, melamine resin.
尿素系樹脂、 アクリル系樹脂、 ポリアミド系樹脂等が挙げらる。urea resin, acrylic resin, Examples include polyamide resins.
これらの樹脂は、いずれも単独でも混合物としても使用
てき、且つ磁性層の形成にあたっては磁性塗料の形態で
使用され、有機溶剤中の溶液でも分散液でもよい。These resins can be used alone or as a mixture, and in forming the magnetic layer, they are used in the form of a magnetic paint, which may be a solution or a dispersion in an organic solvent.
有機溶剤としては、不活性な有機溶剤であればいずれで
もよく、例えば、好ましい有機溶剤としては、メチルエ
チルケトン、メチル−n−プロピルケトン、メチルイソ
ブチルケトン、ジエチルケトン、ギ酸メチル、ギ酸エチ
ル、ギ酸プロピル、酢酸メチル、酢酸エチル、酢酸ブチ
ル、アセトン、シクロヘキサン、テトラヒドロフラン、
ジオキサン、メタノール、エタノール、イソプロピルア
ルコール、ブタノール、メチルセロソルブ、ブチルセロ
ソルブ、セロソルブアセテート、ジメチルホルムアミド
、ジメチルスルホキシド、ペンタン、ヘキサン、シクロ
ヘキサン、ヘプタン、オクタン、ミネラルスピリット、
石油エーテル、ガソリン、ベンセン、トルエン、キシレ
ン、クロロホルム、四塩化炭素、クロルベンゼン、パー
クロルエチレン、トリクロルエチレン等が挙げられる。The organic solvent may be any inert organic solvent. For example, preferred organic solvents include methyl ethyl ketone, methyl-n-propyl ketone, methyl isobutyl ketone, diethyl ketone, methyl formate, ethyl formate, propyl formate, Methyl acetate, ethyl acetate, butyl acetate, acetone, cyclohexane, tetrahydrofuran,
Dioxane, methanol, ethanol, isopropyl alcohol, butanol, methyl cellosolve, butyl cellosolve, cellosolve acetate, dimethyl formamide, dimethyl sulfoxide, pentane, hexane, cyclohexane, heptane, octane, mineral spirits,
Examples include petroleum ether, gasoline, benzene, toluene, xylene, chloroform, carbon tetrachloride, chlorobenzene, perchlorethylene, trichlorethylene, and the like.
本発明で使用する磁性粒子としては、例えば、鉄、クロ
ム、ニッケル、コバルトあるいはこわらの合金または酸
化物、更にはこれらの変性物、具体的には、例えば、γ
−Fe2O3、フェライトマグネタイト、CrO2等、
コバルトドープしたγ−Fe2O3とFe、、04との
ベルトライド化合物等が挙げられる。The magnetic particles used in the present invention include, for example, iron, chromium, nickel, cobalt, alloys or oxides of iron, and modified products thereof, specifically, for example, γ
-Fe2O3, ferrite magnetite, CrO2, etc.
Examples include a bertolide compound of cobalt-doped γ-Fe2O3 and Fe, 04.
以北の如き磁性粒子は、畦なる例示であって、F記例示
以外の各種の磁性粒そも本発明において当然同様に使用
でき、■つC独でも混合物としても使用できる。The magnetic particles shown below are just examples, and various types of magnetic particles other than those exemplified in F can of course be used in the same manner in the present invention, and C can also be used as a mixture.
本発明で磁性層の形成に使用する磁性塗料は、以上の成
分を必須成分とし、それらの使用割合は、従来の磁性粒
子の磁性塗料におけると同様であり、例えば、磁性塗料
全体を100重量部とすれば、その中で占る磁性粒子は
、約10〜50市購%で、媒体は約50〜90市購%で
、バインダー樹脂は約5〜20屯量%の範囲が一般的で
ある。The magnetic paint used to form the magnetic layer in the present invention has the above-mentioned components as essential components, and the proportions used are the same as in the conventional magnetic paint of magnetic particles.For example, the total magnetic paint is 100 parts by weight. In this case, the magnetic particles account for about 10 to 50% by weight, the medium accounts for about 50 to 90% by weight, and the binder resin generally ranges from about 5 to 20% by weight. .
本発明で使用する磁性塗料は、これらの成分を必須成分
とする限り、その他上記以外の副成分、例えば、顔料、
体質顔料、可塑剤、帯電防止剤、界面活性剤、滑剤、架
橋剤、老化防止剤、安定剤、発泡剤、消泡剤等任意の添
加剤を包含し得るものである。As long as the magnetic paint used in the present invention contains these components as essential components, it may also contain other subcomponents other than those mentioned above, such as pigments,
It may contain arbitrary additives such as extender pigments, plasticizers, antistatic agents, surfactants, lubricants, crosslinking agents, anti-aging agents, stabilizers, foaming agents, and antifoaming agents.
以[二の如き必須成分および任意成分からなる本発明で
使用する磁性塗料の製造方法自体は、従来公知のいずれ
の方法でもよく、一般的には、必要成分を同時にあるい
は順次加えながら、ボールミル処理、ミキサー処理、ロ
ールミル処理、ビーズミル処理、グラベルミル処理、サ
ンドミル処理。The method for producing the magnetic paint used in the present invention, which consists of essential components and optional components as described below, may be any conventionally known method, and generally involves ball milling while adding the necessary components simultaneously or sequentially. , mixer processing, roll milling, bead milling, gravel milling, sand milling.
高速インペラー処理等の混合分散方法が好適である。Mixing and dispersing methods such as high speed impeller processing are preferred.
このような分散方法自体は、分散させるべき磁性17
Tの神類、サイズ、その用途等によって、条件が異なる
が、 般的には常温〜100℃の温度て、5分〜20時
間程度処理すればよい。Such a dispersion method itself requires the magnetic 17 to be dispersed.
Conditions vary depending on the type of T, size, purpose, etc., but generally it is sufficient to treat it at a temperature of room temperature to 100°C for about 5 minutes to 20 hours.
また、使用する非磁性支持体としては従来公知のものは
いずれも使用でき、例えば、厚さ5〜50μmのポリエ
ステルフィルム、ポリプロピレンフィルム、セルロース
トリアセテートフィルム、セルロースジアセテートフィ
ルム、ポリカーボネートフィルム等が任、αに使用する
ことができる。In addition, any conventionally known non-magnetic support can be used, such as polyester film, polypropylene film, cellulose triacetate film, cellulose diacetate film, polycarbonate film, etc. with a thickness of 5 to 50 μm. It can be used for.
磁性層の形成は、面記の如き磁性塗料をL記の如き支持
体の少なくとも一方の面に、その乾燥時のJ′¥さが好
ましくは約0,5〜20μmになる様に任意の方法で塗
布し、次いで乾燥させることによって形成できる。また
1)t1記の如き磁性塗料を離望紙の如き基体シートl
−に塗布および乾燥させて磁性層を形成し、次いで転写
方法によって非磁性支持体トに転写して形成させてもよ
い。これらの塗76方法、乾燥方法あるいは転W方法等
は、いずれも従来公知の方法でよい。The magnetic layer can be formed by applying a magnetic coating as shown in the figure on at least one side of the support as shown in the figure L, using any method such that the J′ when dried is preferably about 0.5 to 20 μm. It can be formed by coating and then drying. In addition, 1) Apply magnetic paint as described in t1 to a base sheet such as release paper.
The magnetic layer may be formed by coating and drying the magnetic layer on a non-magnetic support, and then transferring the magnetic layer to a non-magnetic support using a transfer method. The coating method, drying method, rolling method, etc. may be any conventionally known method.
(作用・効果)
以上の如くして得られた本発明の磁気記録媒体は、従来
技術ではみられない程度の優れた表面)滑性、電磁変換
特性および磁性層の均一分散性、史には優れた耐久性を
示すものである。(Function/Effects) The magnetic recording medium of the present invention obtained as described above has excellent surface lubricity, electromagnetic conversion characteristics, and uniform dispersion of the magnetic layer that have never been seen in the prior art. It shows excellent durability.
このような顕著な効果は、磁気記録媒体を形成するため
の本発明で使用するバインダー樹脂として1)1述の如
き主鎖および/または側鎖にアミノ基をイI−するポリ
ウレタン系樹脂を使用したことによる。Such a remarkable effect can be obtained by using a polyurethane resin having an amino group in the main chain and/or side chain as described in 1) as the binder resin used in the present invention to form a magnetic recording medium. Depends on what you did.
すなわち、従来技術においてもポリウレタン系樹脂のL
鎖に直接カルボキシル基またはスルホン酸基等の親水性
基を導入して磁性粒子−に対する親和性を向トさせ、そ
れによって磁性粒子の高い分散性を達成しようとする試
みは知られていたが、このような従来技術の変性ポリウ
レタン系樹脂では満足できる均一分散性や磁性層の優れ
た表面モ滑性等は達成し得なかった。That is, even in the conventional technology, L of polyurethane resin
Attempts have been known to improve the affinity for magnetic particles by directly introducing hydrophilic groups such as carboxyl groups or sulfonic acid groups into the chains, thereby achieving high dispersibility of the magnetic particles. Such conventional modified polyurethane resins could not achieve satisfactory uniform dispersibility or excellent surface smoothness of the magnetic layer.
また、本発明においてはこのような特定のポリウレタン
系樹脂をバインダー樹脂として使用する結果、従来技術
の如き種々の問題を生じる分散剤を実質[使用しなくて
も、磁性粒子が均一安定に分散している磁性塗料が得ら
れ、且つこの磁性塗料を用いて非磁性支持体−トに磁性
層を形成すると、従来知れていなかった程度の高い表面
平滑性、磁性粒子の均一分散性が達成され、その結果従
来技術における表面平−滑性の不足や分散剤の存在によ
る種々の問題が解決されたものである。In addition, in the present invention, as a result of using such a specific polyurethane resin as a binder resin, the magnetic particles can be uniformly and stably dispersed even without the use of a dispersant that causes various problems as in the prior art. When a magnetic coating is obtained, and a magnetic layer is formed on a non-magnetic support using this magnetic coating, a previously unknown level of high surface smoothness and uniform dispersion of magnetic particles can be achieved. As a result, various problems caused by the lack of surface smoothness and the presence of dispersants in the prior art have been solved.
次に実施例を挙げて本発明を更に具体的に説明する。尚
、文中、部または%とあるのは特に断りのない限り重M
基準である。Next, the present invention will be explained in more detail with reference to Examples. In addition, unless otherwise specified, parts or percentages in the text refer to weights.
It is a standard.
実施例1
窒素導入管、温度計、攪拌機および蒸留管を備えた2リ
ツトルのフラスコにポリカプロラクトン300部、1.
3−ブタンジオール30部、ポリオキシプロピレンジメ
チルアミノプロビルアミノエーテル16部、4.4′−
ジフェニルメタンジイソシアネート130部、メチルエ
チルケトン884部を混合し、80〜85℃で8時間反
応させて、本発明で使用するアミノ基変性ポリウレタン
系樹脂(I)を得た。このポリウレタン系樹脂は分子量
が約70,000であった。Example 1 300 parts of polycaprolactone, 1.
30 parts of 3-butanediol, 16 parts of polyoxypropylene dimethylaminopropylaminoether, 4.4'-
130 parts of diphenylmethane diisocyanate and 884 parts of methyl ethyl ketone were mixed and reacted at 80 to 85°C for 8 hours to obtain the amino group-modified polyurethane resin (I) used in the present invention. This polyurethane resin had a molecular weight of about 70,000.
実施例2
窒素導入管、温度計、攪拌機および1に留管を備えた2
リツトルのフラスコにポリカーボネートポリオール30
0部、1,4−ブタンジオール30部、ジメチルアミノ
プロピルアミノポリカプロラクト220部、2.4−お
よび2,6−ドリレンジイソシアネート(80/20混
合物)90部、メチルエチルケトン817部を混合し、
80〜85℃で8時間反応させて、本発明で使用するア
ミノ基変性ポリウレタン系樹脂(II)を得た。このポ
リウレタン系樹脂は分子量か約70.000であった。Example 2 Nitrogen introduction tube, thermometer, stirrer, and 1 equipped with a distillation tube 2
Polycarbonate polyol 30 in a little flask
0 parts, 30 parts of 1,4-butanediol, 220 parts of dimethylaminopropylaminopolycaprolact, 90 parts of 2,4- and 2,6-dolylene diisocyanate (80/20 mixture), and 817 parts of methyl ethyl ketone,
The reaction was carried out at 80 to 85°C for 8 hours to obtain the amino group-modified polyurethane resin (II) used in the present invention. This polyurethane resin had a molecular weight of about 70,000.
実施例3
窒素導入管、温度計、攪拌機および蒸留管を備えた2リ
ツトルのフラスコ中ににポリカーボネートポリオール2
50部、1.3−ブタンジオール25部、N−メチルジ
ェタノールアミン7.5部、4.4′−ジフェニルメタ
ンジイソシアネート118部、メチルエチルケトン74
4部を混合し、80〜85℃で8時間反応させて、本発
明で使用するアミノ基変性ポリウレタン系樹聯(III
)を得た。このポリウレタン系樹脂は分−7′量が約7
0,000であった。Example 3 Polycarbonate polyol 2 was placed in a 2 liter flask equipped with a nitrogen inlet tube, thermometer, stirrer and distillation tube.
50 parts, 1,3-butanediol 25 parts, N-methyljetanolamine 7.5 parts, 4,4'-diphenylmethane diisocyanate 118 parts, methyl ethyl ketone 74 parts
4 parts were mixed and reacted at 80 to 85°C for 8 hours to prepare the amino group-modified polyurethane resin (III) used in the present invention.
) was obtained. This polyurethane resin has a min-7' content of approximately 7
It was 0,000.
実施例4
窒素導入管、温度計、攪拌機および蒸留管を備えた2リ
ツトルのフラスコにポリブチレンアジペート300部、
1.3−ブタンジオール30部、ポリオキシプロピレン
ジメチルアミノプロピルアミノエーテル10部、N−メ
チルジェタノールアミン2部、4.4′−ジフェニルメ
タンジイソシアネート125部、メチルエチルケトン8
67部を混合し、80〜85℃で8時間反応させて、本
発明で使用するアミノ店変性ポリウレタン系樹脂(1’
/)を得た。このポリウレタン系樹脂は分−f”lcが
約70,000であった。Example 4 300 parts of polybutylene adipate was added to a 2-liter flask equipped with a nitrogen inlet tube, a thermometer, a stirrer, and a distillation tube.
1.3-butanediol 30 parts, polyoxypropylene dimethylaminopropylamino ether 10 parts, N-methyljetanolamine 2 parts, 4,4'-diphenylmethane diisocyanate 125 parts, methyl ethyl ketone 8 parts
67 parts of the amino store-modified polyurethane resin (1'
/) was obtained. This polyurethane resin had a min-f''lc of about 70,000.
実施例5〜8
F記成分をボールミルで45時間分散処理し、更にティ
スモジュールOL3.2部を添加して3時間分散処理し
て本発明で使用する磁性塗料(I)〜(TV)を得た。Examples 5 to 8 Components F were dispersed in a ball mill for 45 hours, and 3.2 parts of Tis module OL was added and dispersed for 3 hours to obtain magnetic paints (I) to (TV) used in the present invention. Ta.
コバルトドープ7 Fe2O,3too部実施例1〜
4のポリウレタン系樹脂
(■〜■)35%溶液 71部メチルエチ
ルケトン 82部トルエン
82部シクロへキサノン
82部上記磁性塗料(I)〜(rV)を厚さ15
μmのポリエステルフィルムに塗布し、1,800ガウ
スでの磁場配向を行い、厚さ約5μmの磁性層を形成し
、本発明の磁気記録媒体(I)〜(IV)を作成した。Cobalt dope 7 Fe2O, 3too part Example 1~
4. Polyurethane resin (■~■) 35% solution 71 parts methyl ethyl ketone 82 parts toluene
82 part cyclohexanone
82 parts of the above magnetic paints (I) to (rV) to a thickness of 15
The magnetic recording media (I) to (IV) of the present invention were prepared by coating a polyester film with a thickness of 1,800 gauss and applying magnetic field orientation at 1,800 gauss to form a magnetic layer with a thickness of about 5 μm.
比較例1〜3
実施例1におけるバインダー樹脂として、それぞれポリ
ウレタン系樹脂(大日精化工業製、ダイフェラミ?/
MAυ−2010) 35%溶液(V)、塩化ビニル−
酢酸ビニルコポリマー系樹脂(積木化学製、ニスレック
スA)35%溶液(vl)およびニトロセルロース系樹
脂(旭化成製、セルツバBTII%)35%溶液(VI
I)を使用し、他は実施例5〜8と同社にして比較用の
磁気記録媒体(V)〜(VII)を!!J製した。Comparative Examples 1 to 3 As the binder resin in Example 1, polyurethane resin (manufactured by Dainichiseika Kogyo Co., Ltd., Daiferami?/
MAυ-2010) 35% solution (V), vinyl chloride-
Vinyl acetate copolymer resin (Made by Miki Kagaku, Nislex A) 35% solution (vl) and nitrocellulose resin (manufactured by Asahi Kasei, Seltsuba BTII%) 35% solution (VI
I), and magnetic recording media (V) to (VII) for comparison were made by the same company as Examples 5 to 8! ! Made by J.
上記実施例5〜8および比較例1〜3で得られる各々の
磁気記録媒体の表面V−滑性<hfi性層の表面の艷)
および磁気特性を調べたところ下記第1表の通りであっ
た。Surface V of each magnetic recording medium obtained in the above Examples 5 to 8 and Comparative Examples 1 to 3 - Lubricity <Surface of HFI layer)
When the magnetic properties were investigated, the results were as shown in Table 1 below.
γ−J 1 ご、−
一艷一 −吐気背且−
U″紳°亜° 亀型北 保詩力 1エ
実施例5 96 96102 86 660 1
.500実施例6 96 97105 86 6
60 1.550実施例7 90 94 99 8
4 850 1.400実施例8 98 99104
87 655 1.550比較例1 3 10
43 75 663 1.300比較例2
Io 18 44 81 655 1.350
比較例3 27 44 96 81 663 1
.350特許出願人 大日精化工業株式会社
代理人 弁理上 吉 1)勝 広 、−1゜° 二、
゛γ-J 1 Go, - One 艷一 - Nausea back and - U'' Gen° A° Turtle-shaped north Hosei power 1E Example 5 96 96102 86 660 1
.. 500 Example 6 96 97105 86 6
60 1.550 Example 7 90 94 99 8
4 850 1.400 Example 8 98 99104
87 655 1.550 Comparative example 1 3 10
43 75 663 1.300 Comparative example 2
Io 18 44 81 655 1.350
Comparative example 3 27 44 96 81 663 1
.. 350 Patent Applicant Dainichiseika Kagyo Co., Ltd. Attorney Yoshi 1) Katsuhiro, -1°° 2.
゛
Claims (1)
に分散せしめた磁性層を設けてなる磁気記録媒体におい
て、上記バインダー樹脂が主鎖および/または側鎖にア
ミノ基を有するポリウレタン系樹脂単独または他のバイ
ンダー樹脂との混合物からなることを特徴とする磁気記
録媒体。(1) In a magnetic recording medium comprising a magnetic layer in which magnetic particles are dispersed in a binder resin on a non-magnetic support, the binder resin is a polyurethane resin having an amino group in the main chain and/or side chain. A magnetic recording medium characterized in that it consists of a single binder resin or a mixture with other binder resins.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24839286A JPS63103416A (en) | 1986-10-21 | 1986-10-21 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24839286A JPS63103416A (en) | 1986-10-21 | 1986-10-21 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63103416A true JPS63103416A (en) | 1988-05-09 |
Family
ID=17177423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24839286A Pending JPS63103416A (en) | 1986-10-21 | 1986-10-21 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63103416A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55100157A (en) * | 1979-01-19 | 1980-07-30 | Minnesota Mining & Mfg | Coating |
JPS58153230A (en) * | 1982-03-09 | 1983-09-12 | Dainippon Ink & Chem Inc | Magnetic recording medium |
JPS6072916A (en) * | 1983-09-30 | 1985-04-25 | デソト,インコーポレーテツド | Manufacture of modified polyurethane |
JPS60246017A (en) * | 1984-05-18 | 1985-12-05 | Toyobo Co Ltd | Magnetic recording medium |
-
1986
- 1986-10-21 JP JP24839286A patent/JPS63103416A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55100157A (en) * | 1979-01-19 | 1980-07-30 | Minnesota Mining & Mfg | Coating |
JPS58153230A (en) * | 1982-03-09 | 1983-09-12 | Dainippon Ink & Chem Inc | Magnetic recording medium |
JPS6072916A (en) * | 1983-09-30 | 1985-04-25 | デソト,インコーポレーテツド | Manufacture of modified polyurethane |
JPS60246017A (en) * | 1984-05-18 | 1985-12-05 | Toyobo Co Ltd | Magnetic recording medium |
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