GB1147518A - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number
GB1147518A
GB1147518A GB31867/66A GB3186766A GB1147518A GB 1147518 A GB1147518 A GB 1147518A GB 31867/66 A GB31867/66 A GB 31867/66A GB 3186766 A GB3186766 A GB 3186766A GB 1147518 A GB1147518 A GB 1147518A
Authority
GB
United Kingdom
Prior art keywords
particles
magnetic
july
compound
magnetic recording
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
Application number
GB31867/66A
Inventor
Georg Schnell
Job-Werner Hartmann
Eckhard Bonitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1147518A publication Critical patent/GB1147518A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • G11B5/7021—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 a polyurethane or a polyisocyanate
    • G11B5/7022—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 a polyurethane or a polyisocyanate containing mixtures of polyurethanes or polyisocyanates with other polymers
    • 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

Abstract

1147518 Magnetic compositions BADISCHE ANILIN- & SODA-FABRIK A G 15 July 1966 [17 July 1965] 31867/66 Index C3R 3 R22 R32 L4H C24 C13X C10 C11 C12 C25 C6X C5B2 C8P L5A L6G L4D C14A C16 L5X A magnetic recording medium comprises a flexible non-magnetic support with a coating thereon containing magnetic particles dispersed in a thermoplastic resinous binder togehter with 0À5-26% (b. w. of the particles) of a compound of formula R n SiX 4-n , where n is 1-3, R is a saturated or unsaturated aliphatic or aromatic hydrocarbon radical, and X is a halogen atom, or alkoxy, hydroxyl, or amine radical. Numerous examples are given where R is Me, Et, Pr, Bu, Ph, naphthyl, vinyl, dodecyl, octadecyl, octyl and mixtures thereof, and X is C1, (OBu), (OEt), (OH) and (NH 2 ). The compound may be added before, during, or after dispersion of the particles. The binder may be P.V.C., cellulose ester, polyurethane, polyamide, or polyester (examples given). The magnetic particles may be acicular γ-Fe 2 O 3 , and a layer 10Á thick may be produced, containing 0À5-5% of the particles.
GB31867/66A 1965-07-17 1966-07-15 Magnetic recording media Expired GB1147518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0082887 1965-07-17

Publications (1)

Publication Number Publication Date
GB1147518A true GB1147518A (en) 1969-04-02

Family

ID=6981702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31867/66A Expired GB1147518A (en) 1965-07-17 1966-07-15 Magnetic recording media

Country Status (1)

Country Link
GB (1) GB1147518A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996407A (en) 1973-12-28 1976-12-07 Basf Aktiengesellschaft Magnetic recording media
US4169912A (en) * 1975-10-02 1979-10-02 Dynamit Nobel Aktiengesellschaft Iron oxide magnetic pigments for the production of magnetic coatings
US4271234A (en) * 1975-10-02 1981-06-02 Dynamit Nobel Aktiengesellschaft Iron oxide magnetic pigments for the production of magnetic coatings
EP0111323A1 (en) * 1982-12-08 1984-06-20 Toray Silicone Company Limited Magnetic recording medium and composition and method therefor
US4500669A (en) * 1977-10-27 1985-02-19 Swedlow, Inc. Transparent, abrasion resistant coating compositions
GB2159731A (en) * 1984-06-08 1985-12-11 Tdk Corp Magnetic recording medium for image recording

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996407A (en) 1973-12-28 1976-12-07 Basf Aktiengesellschaft Magnetic recording media
US4169912A (en) * 1975-10-02 1979-10-02 Dynamit Nobel Aktiengesellschaft Iron oxide magnetic pigments for the production of magnetic coatings
US4271234A (en) * 1975-10-02 1981-06-02 Dynamit Nobel Aktiengesellschaft Iron oxide magnetic pigments for the production of magnetic coatings
US4500669A (en) * 1977-10-27 1985-02-19 Swedlow, Inc. Transparent, abrasion resistant coating compositions
EP0111323A1 (en) * 1982-12-08 1984-06-20 Toray Silicone Company Limited Magnetic recording medium and composition and method therefor
GB2159731A (en) * 1984-06-08 1985-12-11 Tdk Corp Magnetic recording medium for image recording

Also Published As

Publication number Publication date
DE1447985A1 (en) 1969-01-09
DE1447985B2 (en) 1975-06-05

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