公开(公告)号：DE59304266D1

公开(公告)日：1996-11-28

申请号：DE59304266

申请日：1993-08-10

Applicant: BASF MAGNETICS GMBH

Inventor： LEHNER AUGUST ,  SCHNEIDER NORBERT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  LENZ WERNER DR ,  KOHL ALBERT

IPC: C09D183/04 ,  C09D5/23 ,  C10M107/04 ,  C10M107/06 ,  C10M107/50 ,  C10N40/18 ,  G11B5/708 ,  G11B5/71

Abstract: The invention relates to magnetic recording media obtained by preparing a dispersion of an anisotropic magnetic material and conventional additives in a solution of a polymer binder in an organic solvent, coating the dispersion onto a non-magnetisable support material, subsequently aligning the anisotropic magnetic material in a magnetic field and solidifying the applied magnetic coating, where the magnetic coating contains finely divided organic hydrophobic supporting pigments and a high-viscosity polysiloxane.

公开(公告)号：DE4238174A1

公开(公告)日：1994-05-19

申请号：DE4238174

申请日：1992-11-12

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  BRODT GREGOR DR ,  ROLLER HERMANN

IPC: G11B5/72 ,  C09D5/23 ,  C09D175/14 ,  G11B5/73 ,  G11B5/735 ,  G11B5/84

Abstract: The invention relates to flexible, magnetic recording carriers essentially comprising a web-form (sheet-form) nonmagnetic substrate, a magnetic layer applied to the principal side of the web-form substrate, and a back layer (backing) formed on the opposite principal side of the substrate from a polymeric binder and nonmagnetic fillers and supporting pigments.

公开(公告)号：DE4141838A1

公开(公告)日：1993-06-24

申请号：DE4141838

申请日：1991-12-18

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  LEHNER AUGUST ,  ROLLER HERMANN ,  SUETTINGER RUDOLF DR ,  KRESS RIA DR ,  SCHNEIDER NORBERT ,  LENZ WERNER DR ,  ENGELHARDT PETER ,  RUDOLF PETER DR ,  BRODT GREGOR DR

IPC: C08G18/10 ,  C08G18/62 ,  G11B5/702

Abstract: The material has magnetisable layer(s) on a nonmagnetic carrier, and contains a binder mixt. of a polyurethane urea (meth)acrylate (1) and polyurethane elastomer, a high MW OH- gp. contg. polyurethane urea and/or a low MW OH- contg. polyurethane urea. (1) is made by reaction of a poly(meth)acrylate with up to 2 OH-end gps. and a MW 200-50000 and a mixt. aliphatic polyisocyanates with an NCO- functionality of 3-6 per mole. The polyisocyanates contain 0.1-10 wt.% of diisocyanates, 20-80 wt.% triisocyanates and 20-60 wt.% of isocyanates with a functionality of 4-10. There are 1.2-3 NCO gps. per OH gp., and the remaining NCO gps are converted to urea gps. with ammonia or with prim. or sec. amines.

公开(公告)号：DE59304159D1

公开(公告)日：1996-11-21

申请号：DE59304159

申请日：1993-05-13

Applicant: BASF MAGNETICS GMBH

Inventor： ROLLER HERMANN ,  ENGELHARDT PETER ,  BAUR REINHOLD DR ,  BOBRICH MICHAEL DR ,  LATZEL WERNER DR ,  LENZ WERNER DR ,  SUETTINGER RUDOLF DR

IPC: G11B5/66 ,  G11B5/73 ,  G11B5/733 ,  G11B5/735 ,  G11B5/704

Abstract: The invention relates to flexible magnetic recording carriers essentially comprising a sheet-like (web-like) nonmagnetic substrate, a magnetic layer applied to the first main side of the sheet-like substrate, and a backing layer formed on the opposite main side of the substrate from a polymeric binder and nonmagnetic fillers and supporting pigments, where the backing layer contains a precipitation silicic acid (silica) coated on the surface with a phosphate group-containing polyurethane.

公开(公告)号：DE59205483D1

公开(公告)日：1996-04-04

申请号：DE59205483

申请日：1992-12-02

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  LEHNER AUGUST ,  ROLLER HERMANN ,  SUETTINGER RUDOLF DR ,  KRESS RIA DR ,  SCHNEIDER NORBERT ,  LENZ WERNER DR ,  ENGELHARDT PETER ,  RUDOLF PETER DR ,  BRODT GREGOR DR ,  BALZ WERNER DR ,  KOHL ALBERT

IPC: C09D175/16 ,  C08G18/10 ,  C08G18/62 ,  C09D4/02 ,  C09D5/23 ,  C09D175/14 ,  G11B5/702

Abstract: The invention relates to magnetic recording media comprising a non-magnetic carrier material and at least one magnetizable layer, applied adherently thereto, based on a magnetic material dispersed in at least one polyurethane and a polyurethane urea (meth)acrylate, where the polyurethane urea (meth)acrylate is obtained by reacting a hydroxyl-containing poly(meth)acrylate with a mixture of diisocyanates and polyisocyanates and converting the NCO groups which remain into urea groups by means of ammonia or primary or secondary amines.

公开(公告)号：DE59203265D1

公开(公告)日：1995-09-21

申请号：DE59203265

申请日：1992-05-13

Applicant: BASF MAGNETICS GMBH

Inventor： ROLLER HERMANN ,  HEILMANN PETER DR ,  HITZFELD MICHAEL DR ,  STOCKBURGER DIETER DR ,  LATZEL WERNER DR ,  BAUR REINHOLD DR ,  ENGELHARDT PETER ,  ROTHFUSS EDWIN ,  GRAU WERNER DR ,  LENZ WERNER DR

IPC: C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/73 ,  G11B5/735 ,  G11B5/704

Abstract: The invention relates to flexible magnetic recording supports (media) which are essentially composed of a sheet-type nonmagnetic substrate, a magnetic layer applied to one principal side of the sheet-type substrate and a back layer formed on the opposite principal side of the substrate and composed of a polymeric binder, at least one filler, at least one auxiliary pigment and polyolefin particles having a spherical shape.

公开(公告)号：DE4227870A1

公开(公告)日：1994-02-24

申请号：DE4227870

申请日：1992-08-22

Applicant: BASF MAGNETICS GMBH

Inventor： LEHNER AUGUST ,  SCHNEIDER NORBERT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  LENZ WERNER DR ,  KOHL ALBERT

IPC: C09D183/04 ,  C09D5/23 ,  C10M107/04 ,  C10M107/06 ,  C10M107/50 ,  C10N40/18 ,  G11B5/708 ,  G11B5/71 ,  G11B5/702

Abstract: The invention relates to magnetic recording media obtained by preparing a dispersion of an anisotropic magnetic material and conventional additives in a solution of a polymer binder in an organic solvent, coating the dispersion onto a non-magnetisable support material, subsequently aligning the anisotropic magnetic material in a magnetic field and solidifying the applied magnetic coating, where the magnetic coating contains finely divided organic hydrophobic supporting pigments and a high-viscosity polysiloxane.

公开(公告)号：DE59305437D1

公开(公告)日：1997-03-27

申请号：DE59305437

申请日：1993-08-27

Applicant: BASF MAGNETICS GMBH

Inventor： JAKUSCH HELMUT DR ,  SCHOMANN KLAUS DIETER DR ,  HITZFELD MICHAEL DR ,  ROLLER HERMANN ,  BAUR REINHOLD DR ,  ROTHFUSS EDWIN

IPC: C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/706 ,  G11B5/73

公开(公告)号：DE4229246A1

公开(公告)日：1994-03-03

申请号：DE4229246

申请日：1992-09-02

Applicant: BASF MAGNETICS GMBH

Inventor： JAKUSCH HELMUT DR ,  SCHOMANN KLAUS DIETER DR ,  HITZFELD MICHAEL DR ,  ROLLER HERMANN ,  BAUR REINHOLD DR ,  ROTHFUSS EDWIN

IPC: C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/706 ,  G11B5/73 ,  G11B5/714 ,  G11B5/842

公开(公告)号：DE4216847A1

公开(公告)日：1993-11-25

申请号：DE4216847

申请日：1992-05-21

Applicant: BASF MAGNETICS GMBH

Inventor： ROLLER HERMANN ,  ENGELHARDT PETER ,  BAUR REINHOLD DR ,  BOBRICH MICHAEL DR ,  LATZEL WERNER DR ,  LENZ WERNER DR ,  SUETTINGER RUDOLF DR

IPC: G11B5/66 ,  G11B5/73 ,  G11B5/733 ,  G11B5/735 ,  G11B5/72

Abstract: The invention relates to flexible magnetic recording carriers essentially comprising a sheet-like (web-like) nonmagnetic substrate, a magnetic layer applied to the first main side of the sheet-like substrate, and a backing layer formed on the opposite main side of the substrate from a polymeric binder and nonmagnetic fillers and supporting pigments, where the backing layer contains a precipitation silicic acid (silica) coated on the surface with a phosphate group-containing polyurethane.