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

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/725

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.

公开(公告)号：DE1471029A1

公开(公告)日：1968-11-28

申请号：DE1471029

申请日：1964-10-15

Applicant: BASF AG

Inventor： ECKHARD BONITZ DR ,  RETTIG AUGUST

IPC: C04B24/42