公开(公告)号：DE2350063A1

公开(公告)日：1975-04-17

申请号：DE2350063

申请日：1973-10-05

Applicant: BASF AG

Inventor： NEUMANN UTE ,  ROLLER HERMANN ,  HARTMANN JOB-WERNER DIPL-CHEM ,  HACK JOACHIM DIPL-ING ,  MOTZ HERBERT DIPL-ING DR ,  OSTERTAG WERNER DIPL-CHEM DR

IPC: C07F9/09 ,  C08K5/521 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725

Abstract: Coated magnetic recording media, especially video tapes and computer tapes, comprising a non-magnetic base carrying a magnetic coating which consists of a dispersion, essentially containing a finely divided magnetic pigment in an organic binder and at least one lubricant. A compound of the formula in which n is an integer of from 1 to 3 and R is alkyl, alkoxyalkyl or aralkyl, each of 3 to 18 carbon atoms, is used as a lubricant. The products have high abrasion resistance coupled with only little transfer of material to the magnetic heads even under fluctuating climatic conditions.

公开(公告)号：DE2162440A1

公开(公告)日：1973-07-05

申请号：DE2162440

申请日：1971-12-16

Applicant: BASF AG

Inventor： HARTMANN JOB WERNER DR ,  ROLLER HERMANN ,  HARTMANN HANS JOERG DR ,  HARTMANN HEINRICH DR ,  HACK JOACHIM DIPL ING

IPC: G11B5/70 ,  C09D5/23 ,  G11B5/702 ,  G11B5/842 ,  G11B5/68

公开(公告)号：DE58909705D1

公开(公告)日：1996-08-29

申请号：DE58909705

申请日：1989-12-19

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  SUETTINGER RUDOLF DR ,  BOBRICH MICHAEL DR ,  DIKOW HERMANN DR ,  ROLLER HERMANN ,  LENZ WERNER DR ,  KREITNER LUDWIG DR ,  LOCH WERNER DR ,  SCHNEIDER NORBERT

IPC: C09D5/23 ,  C09D129/04 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/706

公开(公告)号：DE3408000C2

公开(公告)日：1994-05-19

申请号：DE3408000

申请日：1984-03-03

Applicant: BASF AG

Inventor： GRAU WERNER DR ,  JAKUSCH HELMUT DR ,  KOVACS JENOE DR ,  OHLINGER MANFRED DR ,  RUDOLF PETER DR ,  ROLLER HERMANN

IPC: G11B5/708

公开(公告)号：DE3843442A1

公开(公告)日：1990-06-28

申请号：DE3843442

申请日：1988-12-23

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  SUETTINGER RUDOLF DR ,  BOBRICH MICHAEL DR ,  DIKOW HERMANN DR ,  ROLLER HERMANN ,  LENZ WERNER DR ,  KREITNER LUDWIG DR ,  LOCH WERNER DR ,  SCHNEIDER NORBERT

IPC: C09D5/23 ,  C09D129/04 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/706

公开(公告)号：DE3668250D1

公开(公告)日：1990-02-15

申请号：DE3668250

申请日：1986-07-11

Applicant: BASF AG

Inventor： KOVACS JENOE DR ,  ENGELHARDT PETER ,  ROLLER HERMANN ,  SCHWARZ LOTHAR ,  NAGEL PETER

IPC: G11B5/714 ,  G11B5/84 ,  G11B5/842

Abstract: Magnetic recording media are produced by dispersing pulverulent magnetic material in a mixture of a solvent, an organic polymer binder, a dispersant and other conventional additives, with the aid of a conventional dispersing apparatus and using a particular ceramic grinding medium, applying the resulting dispersion in the form of a layer on a base and then compacting the layer.

公开(公告)号：DE3707440A1

公开(公告)日：1988-09-15

申请号：DE3707440

申请日：1987-03-07

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  KOHL ALBERT ,  BOBRICH MICHAEL DR ,  ROLLER HERMANN ,  RICHTER PETER DR ,  LENZ WERNER DR ,  KREITNER LUDWIG DR ,  RUDOLF PETER DR

IPC: C08G18/12 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  C09D3/72

公开(公告)号：DE3560046D1

公开(公告)日：1987-02-12

申请号：DE3560046

申请日：1985-02-09

Applicant: BASF AG

Inventor： MELZER MILENA ,  ROLLER HERMANN ,  SCHNEIDER NORBERT ,  FITTERER HORST ,  MUENZNER WULF DR

IPC: C09D127/06 ,  C09D5/23 ,  C09D163/00 ,  G11B5/72 ,  G11B5/73 ,  G11B5/735

Abstract: A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.

公开(公告)号：DE3461231D1

公开(公告)日：1986-12-11

申请号：DE3461231

申请日：1984-12-14

Applicant: BASF AG

Inventor： LEHNER AUGUST DIPL ING ,  KOHL ALBERT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  KOESTER EBERHARD DR ,  SOMMERMANN FRIEDRICH DR

IPC: C09D5/23 ,  C09D7/12 ,  C10M105/24 ,  C10M105/68 ,  C10N10/04 ,  C10N40/18 ,  G11B5/71

Abstract: Magnetic recording media consisting of a non-magnetic base and, applied thereto, one or more firmly adhering magnetizable layers based on magnetic material finely dispersed in a polymeric binder, at least one lubricant and other conventional additives, wherein the lubricant used is a mixture of zinc stearate which has been rendered hydrophilic and stearylamide.

公开(公告)号：DE3341699A1

公开(公告)日：1985-05-30

申请号：DE3341699

申请日：1983-11-18

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  KOPKE HELMUT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  GRAU WERNER DR ,  KOESTER EBERHARD DR ,  SOMMERMANN FRIEDRICH DR

IPC: C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/02 ,  C09D175/04 ,  G11B5/702 ,  H01F10/10 ,  G11B5/68 ,  C09D3/72 ,  C09D3/76 ,  C09D3/81

Abstract: Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) a high molecular weight thermoplastic linear polyurethane, (2) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer and (3) an OH-containing polyurethane which is crosslinked with polyisocyanates.