DE3007218A1 - Magnetisches aufzeichnungsmedium mit selbstvernetztem latexbinder, verfahren zu seiner herstellung und stabile dispersion des latexbinders - Google Patents
Magnetisches aufzeichnungsmedium mit selbstvernetztem latexbinder, verfahren zu seiner herstellung und stabile dispersion des latexbindersInfo
- Publication number
- DE3007218A1 DE3007218A1 DE19803007218 DE3007218A DE3007218A1 DE 3007218 A1 DE3007218 A1 DE 3007218A1 DE 19803007218 DE19803007218 DE 19803007218 DE 3007218 A DE3007218 A DE 3007218A DE 3007218 A1 DE3007218 A1 DE 3007218A1
- Authority
- DE
- Germany
- Prior art keywords
- parts
- acrylate
- group
- copolymer
- alkyl
- 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.)
- Granted
Links
- 239000004816 latex Substances 0.000 title claims description 52
- 239000006185 dispersion Substances 0.000 title claims description 23
- 239000011230 binding agent Substances 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229920000126 latex Polymers 0.000 claims description 50
- 229920001577 copolymer Polymers 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 28
- 239000000178 monomer Substances 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000004132 cross linking Methods 0.000 claims description 21
- 125000005250 alkyl acrylate group Chemical group 0.000 claims description 15
- -1 alkyl methacrylate Chemical compound 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 10
- 239000010954 inorganic particle Substances 0.000 claims description 10
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 claims description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 8
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 4
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 4
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 229940063557 methacrylate Drugs 0.000 claims 8
- 150000001875 compounds Chemical class 0.000 claims 7
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims 3
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229920002799 BoPET Polymers 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 3
- 229940001584 sodium metabisulfite Drugs 0.000 description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229960002887 deanol Drugs 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical class CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 description 1
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/068—Copolymers with monomers not covered by C09D133/06 containing glycidyl groups
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
- G11B5/7023—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1475479A | 1979-02-23 | 1979-02-23 | |
| US7309379A | 1979-09-06 | 1979-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3007218A1 true DE3007218A1 (de) | 1980-09-04 |
| DE3007218C2 DE3007218C2 (en, 2012) | 1990-07-12 |
Family
ID=26686471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803007218 Granted DE3007218A1 (de) | 1979-02-23 | 1980-02-22 | Magnetisches aufzeichnungsmedium mit selbstvernetztem latexbinder, verfahren zu seiner herstellung und stabile dispersion des latexbinders |
Country Status (5)
| Country | Link |
|---|---|
| BR (1) | BR8000887A (en, 2012) |
| DE (1) | DE3007218A1 (en, 2012) |
| FR (1) | FR2449716A1 (en, 2012) |
| GB (1) | GB2045768B (en, 2012) |
| IT (1) | IT1145355B (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0115516A4 (en) * | 1982-07-14 | 1984-10-29 | Memorex Corp | WATER-BASED MAGNETIC COATING COMPOSITION. |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188641B (en) * | 1983-04-22 | 1988-02-10 | Ici Plc | Article having magnetic properties and production thereof |
| EP0630388B1 (en) * | 1992-03-11 | 1999-06-23 | Zeneca Limited | Aqueous coating dispersions and coating processes |
| US20060205870A1 (en) * | 2005-03-11 | 2006-09-14 | Eastman Kodak Company | Multifunctional polymer particles and methods of making the same |
| WO2019240905A1 (en) | 2018-06-15 | 2019-12-19 | Sun Chemical Corporation | Film lamination inks |
| WO2023278440A1 (en) | 2021-06-30 | 2023-01-05 | Sun Chemical Corporation | Water-based washable printing inks for recycled plastics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1497658A (en) * | 1975-03-10 | 1978-01-12 | Ici Ltd | Process for coating films |
-
1980
- 1980-02-13 BR BR8000887A patent/BR8000887A/pt unknown
- 1980-02-22 DE DE19803007218 patent/DE3007218A1/de active Granted
- 1980-02-22 IT IT8047980A patent/IT1145355B/it active
- 1980-02-22 GB GB8006145A patent/GB2045768B/en not_active Expired
- 1980-02-22 FR FR8003901A patent/FR2449716A1/fr active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1497658A (en) * | 1975-03-10 | 1978-01-12 | Ici Ltd | Process for coating films |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0115516A4 (en) * | 1982-07-14 | 1984-10-29 | Memorex Corp | WATER-BASED MAGNETIC COATING COMPOSITION. |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3007218C2 (en, 2012) | 1990-07-12 |
| FR2449716B1 (en, 2012) | 1983-12-09 |
| IT8047980A0 (it) | 1980-02-22 |
| IT1145355B (it) | 1986-11-05 |
| FR2449716A1 (fr) | 1980-09-19 |
| GB2045768A (en) | 1980-11-05 |
| GB2045768B (en) | 1983-03-30 |
| BR8000887A (pt) | 1980-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0017834B1 (de) | Magnetisches Speichermedium und Verfahren zu dessen Herstellung | |
| DE3152313C2 (de) | Magnetischer Aufzeichnungsträger und Verfahren zu dessen Herstellung | |
| DE3630955C2 (en, 2012) | ||
| DE3639250A1 (de) | Magnetaufzeichnungsmedium | |
| DE3138278C2 (en, 2012) | ||
| DE69801326T2 (de) | Magnetische aufzeichnungsträger unter verwendung von oberfächenbehandelten magnetischen pigmenten | |
| DE69413598T2 (de) | Magnetischer Aufzeichnungsträger | |
| DE3007218A1 (de) | Magnetisches aufzeichnungsmedium mit selbstvernetztem latexbinder, verfahren zu seiner herstellung und stabile dispersion des latexbinders | |
| DE69102798T2 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern. | |
| DE2558973A1 (de) | Elektrostatisches aufzeichnungsmaterial und verfahren zu seiner herstellung | |
| DE3787340T2 (de) | Polyvinylchloridharze und solche Harze enthaltende Zusammensetzungen. | |
| DE69003708T2 (de) | Zusammensetzung des Bindemittels bei magnetischen Aufzeichnungsträgern. | |
| EP0134994B1 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern mit Rückschicht | |
| EP0104378B1 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern | |
| DE4441545C2 (de) | Magnetische Beschichtungszusammensetzungen für magnetische Aufzeichnungsmaterialien | |
| DE3237491A1 (de) | Trockenentwickler fuer die elektrophotographie | |
| DE3440520A1 (de) | Harz fuer eine magnetische ueberzugsmasse | |
| EP0173213B1 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern | |
| DE3886832T2 (de) | Magnetischer Aufzeichnungsträger und Methode zu seiner Herstellung. | |
| DE2526793A1 (de) | Zusammensetzung und verfahren zum ueberziehen von magnetbaendern | |
| JPH05271254A (ja) | 新規フォスフォリレート化反応生成物 | |
| DE3722291A1 (de) | Magnetisches aufzeichnungsmedium | |
| DE4441544C2 (de) | Magnetisches Aufzeichnungsmaterial | |
| EP0075204A2 (de) | Magnetischer Aufzeichnungsträger | |
| DE3413079A1 (de) | Magnetisches aufzeichnungsmaterial |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |