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公开(公告)号:DE1447985A1
公开(公告)日:1969-01-09
申请号:DE1447985
申请日:1965-07-17
Applicant: BASF AG
Inventor: GEORG SCHNELL DR , JOB-WERNER HARTMANN DR , ECKHARD BONITZ DR
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.
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公开(公告)号:DE1524816A1
公开(公告)日:1970-12-17
申请号:DE1524816
申请日:1967-08-29
Applicant: BASF AG
Inventor: GEORG SCHNELL DR , JOB-WERNER HARTMANN DR , ERNST KOEHNLEIN DR , HAMMON FRITZ
IPC: G03B21/32 , G11B23/037
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公开(公告)号:DE1546847A1
公开(公告)日:1970-10-22
申请号:DE1546847
申请日:1965-07-08
Applicant: BASF AG
Inventor: GERHARD FLORUS DR , MATTHIAS MARX DR , JOB-WERNER HARTMANN DR , HANS WILHELM DR
IPC: C08L61/04 , C09D5/44 , C09D133/06
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公开(公告)号:DE1519044A1
公开(公告)日:1969-04-17
申请号:DE1519044
申请日:1951-01-28
Applicant: BASF AG
Inventor: GERHARD FLORUS DR , MATTHIAS MARX DR , JOB-WERNER HARTMANN DR , HANS WILHELM DR
IPC: C09D5/44 , C09D133/06
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