US3412044A - Diamine soap as dispersant in magnetic tape formulations - Google Patents
Diamine soap as dispersant in magnetic tape formulations Download PDFInfo
- Publication number
- US3412044A US3412044A US461170A US46117065A US3412044A US 3412044 A US3412044 A US 3412044A US 461170 A US461170 A US 461170A US 46117065 A US46117065 A US 46117065A US 3412044 A US3412044 A US 3412044A
- Authority
- US
- United States
- Prior art keywords
- soap
- diamine
- dispersant
- magnetic tape
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000344 soap Substances 0.000 title description 14
- 239000002270 dispersing agent Substances 0.000 title description 11
- 150000004985 diamines Chemical class 0.000 title description 10
- 239000000203 mixture Substances 0.000 title description 9
- 238000009472 formulation Methods 0.000 title 1
- 239000006185 dispersion Substances 0.000 description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 8
- 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 7
- 239000000787 lecithin Substances 0.000 description 7
- 229940067606 lecithin Drugs 0.000 description 7
- 235000010445 lecithin Nutrition 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 235000013980 iron oxide Nutrition 0.000 description 6
- 150000004665 fatty acids Chemical class 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000000417 fungicide Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 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
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 240000005020 Acaciella glauca Species 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 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
- 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
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- -1 fatty acid diamine Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000003499 redwood Nutrition 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/7013—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dispersing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
-
- 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
Definitions
- This invention relates to magnetic recording tapes and, more particularly, relates to magnetic recording tapes wherein a novel fatty acid soap of a long chain diamine is used as a dispersing agent informing a dispersion of the magnetic iron oxide utilized in making the recording tape.
- the dispersant mixture contains at least 50% of the diamine soap in order to secure effective results.
- the novel dispersant was employed in conjunction with a polyurethane resin system.
- the particular polyurethane employed is sold under the trade name of Estane 5701 by B. F. Goodrich.
- This particular polyurethane was made by reacting p-p'- diphenylmethane diisocyanate, adipic acid and butanediol- 1,4 in such proportions that all of the isocyanate groups have reacted to give a substantially unreactive polymer having the following characteristics:
- This polyurethane resin can be used either alone or in combination with other resins such as a vinyl chloridevinyl acetate copolymer.
- the particular copolymer selected is one sold under the trade name VAGH by Union Carbide and Chemical Corporation.
- This particular vinyl chloride-vinyl acetate copolymer contains approximately: 91% vinyl chloride; 3% vinyl acetate; 6% vinyl alcohol.
- This copolymer has an intrinsic viscosity in cyclohexanone at 20 C. of 0.57 c.p.s. and a specific gravity of 1.39.
- a novel fatty acid soap of a long chain diamine is employed to replace all or part of the licithin which is normally used in pre paring dispersions of magnetic iron oxides.
- One particularly suitable fatty acid soap is sold under the trade name Troykyd 98C, and this is a soap made by reacting stoichiometric amounts of a saturated fatty acid having from 12 to 18 carbon atoms and a diamine having from 12 to 18 carbon atoms in each chain.
- Troykyd 98C has a molecular weight of about 490. As the following examples show, this can be effectively combined with lecithin for use as a dispersant or it can be used along as a dispersant.
- Components 1 to 5 are dispersed in a pebble-mill using appropriate amounts of methylethyl ketone, methylisobutyl ketone and toluol for 48 hours. At the end of this grinding period a solution of the binder in similar solvents is added and grinding is continued for 24 hours. This mixture is then coated on a plastic base and dried.
- Example 3 The dispersion and coating of this example is the same as Example 1.
- the improvement consisting essentially of employing as a dispersing agent a diamine soap having a molecular weight of about 490; said soap being made from a fatty acid having 12 to 18 carbon atoms and a diamine having from 12. to 18 carbon atoms in each chain.
- the dispersant comprises a mixture of the long chain fatty acid-diamine soap and lecithin, wherein the amine soap constitutes at least one half of the dispersant.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US461170A US3412044A (en) | 1965-06-03 | 1965-06-03 | Diamine soap as dispersant in magnetic tape formulations |
| DEA52561A DE1285004B (de) | 1965-06-03 | 1966-05-18 | Verfahren zur Herstellung eines magnetisierbaren Aufzeichnungstraegers |
| GB24004/66A GB1079609A (en) | 1965-06-03 | 1966-05-27 | Improvements in or relating to magnetic iron oxide dispersions suitable for magnetic recording media |
| BE681701D BE681701A (enrdf_load_stackoverflow) | 1965-06-03 | 1966-05-27 | |
| FR63665A FR1481679A (fr) | 1965-06-03 | 1966-06-01 | Agent dispersant perfectionné pour la préparation d'une dispersion d'un oxyde de fer magnétique dans un solvant organique |
| NL6607670A NL6607670A (enrdf_load_stackoverflow) | 1965-06-03 | 1966-06-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US461170A US3412044A (en) | 1965-06-03 | 1965-06-03 | Diamine soap as dispersant in magnetic tape formulations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3412044A true US3412044A (en) | 1968-11-19 |
Family
ID=23831478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US461170A Expired - Lifetime US3412044A (en) | 1965-06-03 | 1965-06-03 | Diamine soap as dispersant in magnetic tape formulations |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3412044A (enrdf_load_stackoverflow) |
| BE (1) | BE681701A (enrdf_load_stackoverflow) |
| DE (1) | DE1285004B (enrdf_load_stackoverflow) |
| GB (1) | GB1079609A (enrdf_load_stackoverflow) |
| NL (1) | NL6607670A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431854A (en) * | 1972-04-07 | 1976-04-14 | Sony Corp | Magnetic recording media and methods of making them |
| DE3128013C1 (de) * | 1981-07-15 | 1982-11-11 | Siemens Ag | Ansteuerschaltung fuer wenigstens eine lichtemittierende Diode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149996A (en) * | 1960-11-16 | 1964-09-22 | Basf Ag | Magnetic record member |
| US3262812A (en) * | 1964-03-26 | 1966-07-26 | Gen Electric | Magnetic recording tape with magnetic layer of oxide coated iron-cobalt alloy particles in a binder |
-
1965
- 1965-06-03 US US461170A patent/US3412044A/en not_active Expired - Lifetime
-
1966
- 1966-05-18 DE DEA52561A patent/DE1285004B/de active Pending
- 1966-05-27 GB GB24004/66A patent/GB1079609A/en not_active Expired
- 1966-05-27 BE BE681701D patent/BE681701A/xx unknown
- 1966-06-02 NL NL6607670A patent/NL6607670A/xx unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149996A (en) * | 1960-11-16 | 1964-09-22 | Basf Ag | Magnetic record member |
| US3262812A (en) * | 1964-03-26 | 1966-07-26 | Gen Electric | Magnetic recording tape with magnetic layer of oxide coated iron-cobalt alloy particles in a binder |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1079609A (en) | 1967-08-16 |
| NL6607670A (enrdf_load_stackoverflow) | 1966-12-05 |
| BE681701A (enrdf_load_stackoverflow) | 1966-10-31 |
| DE1285004B (de) | 1968-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3247017A (en) | Magnetic recording tape for sound, image and pulse recording | |
| US3650828A (en) | Magnetic coating formulation for recording tape | |
| US3320090A (en) | Phenoxy-polyurethane magnetic tape binder | |
| DE3152313T1 (enrdf_load_stackoverflow) | ||
| US4544601A (en) | Magnetic recording medium | |
| US4115290A (en) | Magnetic recording medium | |
| US4234438A (en) | Magnetic recording medium | |
| US3647539A (en) | Magnetic recording tape and method for preparing the same | |
| DE3023799A1 (de) | Magnetisches aufzeichnungsmedium | |
| US3412044A (en) | Diamine soap as dispersant in magnetic tape formulations | |
| US3558353A (en) | Magnetic recording medium | |
| US4671995A (en) | Magnetic recording medium comprising an undercoating made of a mixture of thermosetting polyurethane and polyester resins | |
| US4579778A (en) | Magnetic recording medium | |
| US3681137A (en) | Magnetic recording media | |
| US4634627A (en) | Magnetic recording medium comprising a surface-treated abrasive | |
| DE3414926C2 (de) | Magnetisches Aufzeichnungsmedium | |
| EP0150005B1 (de) | Magnetisches Speichermedium | |
| US4414288A (en) | Magnetic recording medium | |
| JPH0263251B2 (enrdf_load_stackoverflow) | ||
| US4370383A (en) | Magnetic recording medium | |
| JPS5857815B2 (ja) | ジキキロクタイ | |
| EP0083011A2 (de) | Verfahren zur Herstellung magnetischer Aufzeichnungsträger | |
| DE3423014C2 (enrdf_load_stackoverflow) | ||
| DE3438431A1 (de) | Magnetaufzeichnungsmedien mit einem gehalt an feinen teilchen von organokieselgel in der magnetischen aufzeichnungsschicht | |
| KR900007013B1 (ko) | 비디오용 자기 기록 테이프 |