公开(公告)号：DE3068158D1

公开(公告)日：1984-07-19

申请号：DE3068158

申请日：1980-03-12

Applicant: BASF AG

Inventor： KNELLER ECKHART DR ,  KOENIG ROLAND DR ,  KOESTER EBERHARD DR ,  GRAU WERNER DR ,  MAYER DIETER DR

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/65 ,  G11B5/706 ,  G11B5/73 ,  G11B5/85 ,  H01F1/20 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F41/20

Abstract: A magnetic recording medium comprising a non-magnetic base which is dimensionally stable at up to 300 DEG C., and an 0.03-0.4 mu m thick magnetically hard recording layer of an Sm-Co alloy, vacuum-deposited thereon, which layer possesses uniaxial magnetic anisotropy in the plane of the layer, and a process for the manufacture of this recording medium.

公开(公告)号：DE3774969D1

公开(公告)日：1992-01-16

申请号：DE3774969

申请日：1987-08-22

Applicant: BASF AG

Inventor： RICHTER JUERGEN DR ,  GRAU WERNER DR ,  MAURER GERD PROF DR ,  DOMAS FRIEDRICH ,  LOESER WERNER DR ,  BENDER RAINER DR ,  SCHULZE AXEL-RUEDIGER DR ,  DOERR KURT DR

IPC: G11B5/73 ,  G11B5/84 ,  G11B5/704

Abstract: Method of surface treating Ni-coated Al substrates to produce a polished and texture surface of roughness depth Rt of 0.04-0.1um, a average roughness depth R2 of 0.04-0.1um and an average roughness value Ra of 0.0065-0.0095, consists of lap-polishing both sides of the substrate with a polishing material to remove 2-4um of the surface layer and produce an average roughness value of 0.04-0.06um. Without removing the substrate from the polishing machine, a second process using a polishing material having 3-10 times the grain size is effected to produce an essentially paddle wheel structured texture.

公开(公告)号：DE3769111D1

公开(公告)日：1991-05-08

申请号：DE3769111

申请日：1987-12-19

Applicant: BASF AG

Inventor： HITZFELD MICHAEL DR ,  NOWAK UWE DR ,  GRAU WERNER DR ,  KOCH VOLKER DR ,  KOENIG ROLAND DR

IPC: G11B5/72 ,  C10M105/02 ,  C10N40/18 ,  G11B5/71 ,  G11B5/725 ,  G11B5/82 ,  G11B5/84

Abstract: The discs comprise a non-magnetic base material, a magnetic layer applied thereto on at least one side, based on a magnetic material finely distributed in an organic binder matrix, and a friction-reducing carbon layer, situated on the surface of the magnetic layer.

公开(公告)号：DE3675989D1

公开(公告)日：1991-01-17

申请号：DE3675989

申请日：1986-06-19

Applicant: BASF AG

Inventor： GRAU WERNER DR ,  KOHL ALBERT ,  KOVACS JENOE DR ,  BALZ WERNER DR ,  MUENZNER WULF DR

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B5/72 ,  G11B5/84

Abstract: Magnetic recording media, consisting of a non-magnetic base and a magnetic layer firmly bonded thereto, exhibit improved properties in sustained operation if, in the course of their production, a dispersion of inorganic particles in a solvent is applied to the magnetic layer, and the solvent is then removed.

公开(公告)号：DE3842635A1

公开(公告)日：1990-06-21

申请号：DE3842635

申请日：1988-12-17

Applicant: BASF AG

Inventor： HIBST HARTMUT DR ,  WERNER AREND DR ,  HACK JOACHIM ,  MANNSPERGER HEINRICH DR ,  HITZFELD MICHAEL DR ,  GRAU WERNER DR ,  HEIL GUENTER DR ,  HOLL NORBERT

IPC: G11B23/03 ,  C10M105/34 ,  C10N20/06 ,  C10N40/18 ,  G11B5/64 ,  G11B5/66 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73 ,  G11B5/84 ,  G11B23/033

Abstract: The invention relates to magnetic recording media in disc form, essentially composed of a flexible base material, a ferromagnetic thin metal layer applied on at least one side, and a protective and gliding layer, essentially composed of carbon, located on this metal layer, a process for producing these recording media and information memory containing these recording media.

公开(公告)号：DE3800196A1

公开(公告)日：1989-07-20

申请号：DE3800196

申请日：1988-01-07

Applicant: BASF AG

Inventor： SCHNEIDER NORBERT ,  KREIMES NORBERT ,  BETTINGER GUENTER ,  BOEHM UDO ,  KREITNER LUDWIG DR ,  LEHNER AUGUST ,  LENZ WERNER DR ,  NERSCHBACH GERHARD ,  GRAU WERNER DR ,  NIEDERBERGER WERNER ,  STRANSKY REINHARD

IPC: B24B7/13 ,  B24B21/00 ,  B24B21/04 ,  G11B5/84

公开(公告)号：DE3465389D1

公开(公告)日：1987-09-17

申请号：DE3465389

申请日：1984-09-06

Applicant: BASF AG

Inventor： HEIL GUENTER DR ,  SPOOR HERBERT DR ,  LENZ WERNER DR ,  KOVACS JENOE DR ,  GRAU WERNER DR ,  BALZ WERNER DR ,  LEHNER AUGUST

IPC: C08F2/46 ,  C08F283/04 ,  C08G18/67 ,  C08L75/04 ,  C09D5/23 ,  C09D163/00 ,  C09D171/00 ,  C09D171/12 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702

Abstract: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 50 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 0 to 50% by weight of an acrylate and/or an acrylate prepolymer and/or an N-vinyl monomer and/or an N-vinyl prepolymer.

公开(公告)号：DE3522681A1

公开(公告)日：1987-01-08

申请号：DE3522681

申请日：1985-06-25

Applicant: BASF AG

Inventor： GRAU WERNER DR ,  KOHL ALBERT ,  KOVACS JENOE DR ,  BALZ WERNER DR ,  MUENZNER WULF DR

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B5/72 ,  G11B5/84 ,  G11B5/71 ,  B05D5/12

Abstract: Magnetic recording media, consisting of a non-magnetic base and a magnetic layer firmly bonded thereto, exhibit improved properties in sustained operation if, in the course of their production, a dispersion of inorganic particles in a solvent is applied to the magnetic layer, and the solvent is then removed.

公开(公告)号：DE3347532A1

公开(公告)日：1985-07-11

申请号：DE3347532

申请日：1983-12-30

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  KOHL ALBERT ,  BALZ WERNER DR ,  SOMMERMANN FRIEDRICH DR ,  VELIC MILAN DR ,  GRAU WERNER DR ,  BAUR REINHOLD DR

IPC: C09D5/23 ,  C09D7/12 ,  C10M105/24 ,  C10N10/04 ,  C10N40/18 ,  G11B5/71 ,  G11B5/72 ,  G11B5/68 ,  H01F10/28 ,  C09D3/727 ,  B05D5/12

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 further conventional additives, wherein the lubricant used is zinc stearate which has been rendered hydrophilic.

公开(公告)号：DE3325556A1

公开(公告)日：1985-01-24

申请号：DE3325556

申请日：1983-07-15

Applicant: BASF AG

Inventor： ROLLER HERMANN ,  LEHNER AUGUST ,  HACK JOACHIM ,  GRAU WERNER DR ,  BALZ WERNER DR ,  BAUR REINHOLD DR

IPC: G11B5/842 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  G11B5/702 ,  G11B5/73 ,  G11B5/735 ,  G11B5/84 ,  G11B5/68 ,  C09D3/16 ,  C09D3/72 ,  B05D5/12

Abstract: Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.