公开(公告)号：DE59101674D1

公开(公告)日：1994-06-23

申请号：DE59101674

申请日：1991-11-29

Applicant: BASF MAGNETICS GMBH

Inventor： KEPPELER UWE DR ,  DIKOW HERMANN DR ,  AUWETER HELMUT DR ,  BOBRICH MICHAEL DR ,  RUDOLPH JOCHEN DR ,  BRODT GREGOR DR ,  KOHL ALBERT ,  LENZ WERNER DR ,  SUETTINGER RUDOLF DR

IPC: C08G18/65 ,  C08G18/08 ,  C08G18/12 ,  C09D5/00 ,  C09D5/23 ,  C09D175/04 ,  G11B5/02 ,  G11B5/702

Abstract: In magnetic recording materials composed of a nonmagnetic backing material and at least one magnetisable layer adhesively applied thereto and based on a polyurethane binder, at least 50% by weight of the binder is composed of a branched polyurethane elastomer which contains sulphonate groups and has urea groups at the chain ends.

公开(公告)号：DE4039749A1

公开(公告)日：1992-06-17

申请号：DE4039749

申请日：1990-12-13

Applicant: BASF MAGNETICS GMBH

Inventor： KEPPLER UWE DR ,  DIKOW HERMANN DR ,  AUWETER HELMUT DR ,  RUDOLPH JOCHEN DR ,  BRODT GREGOR DR ,  KOHL ALBERT ,  LENZ WERNER DR ,  SUETTINGER RUDOLF DR

IPC: C08G18/65 ,  C08G18/08 ,  C08G18/12 ,  C09D5/00 ,  C09D5/23 ,  C09D175/04 ,  G11B5/02 ,  G11B5/702

Abstract: In magnetic recording materials composed of a nonmagnetic backing material and at least one magnetisable layer adhesively applied thereto and based on a polyurethane binder, at least 50% by weight of the binder is composed of a branched polyurethane elastomer which contains sulphonate groups and has urea groups at the chain ends.

公开(公告)号：DE19602541A1

公开(公告)日：1997-07-31

申请号：DE19602541

申请日：1996-01-25

Applicant: BASF MAGNETICS GMBH

Inventor： WEINGART FRANZ DR ,  PAULUS WOLFGANG DR ,  BAUER STEPHAN DR ,  KOHL ALBERT

IPC: G11B5/702

Abstract: The invention concerns a magnetic recording medium comprising at least one magnetic recording layer containing magnetic pigments provided with a polymer I which is suitable as a dispersing resin and is obtained by reacting: A) a polymer II, obtained by reacting at least one ester, vinyl chloride, styrene or vinyl benzene in the presence of a compound containing an N-oxyl radical function, with: B) at least one compound X comprising: a) between 50 and 100 wt %, relative to X, of at least one compound XI selected from the group comprising an ester, an amide, an N-vinyl compound, styrene sulphonic acid or a vinyl benzene sulphonic acid; and b) between 0 and 50 wt %, relative to X, of at least one compound XIX selected from the group comprising an ester, vinyl chloride, styrene or vinyl benzenes, in the presence of a compound containing an N-oxyl radical function, the portion by weight of II in polymer I being between 10 and 90 wt % and the portion by weight of the total amount of X being between 10 and 90 wt % in polymer I.

公开(公告)号：DE19531313A1

公开(公告)日：1997-02-27

申请号：DE19531313

申请日：1995-08-25

Applicant: BASF MAGNETICS GMBH

Inventor： KOHL ALBERT ,  ROEMER KARL-HEINZ ,  LATZEL WERNER DR ,  HEILMANN PETER DR ,  HITZFELD MICHEAL DR

IPC: B29C65/50 ,  C09J7/02 ,  G11B5/627 ,  G11B5/73 ,  G11B5/738 ,  B32B27/08 ,  B32B27/18 ,  G11B5/72

Abstract: A heat sealing sheet comprises a flexible substrate and heat sealing layer of organic polymers. In this novel combination, the coating layer (1,2) contains at least two incompatible thermoplastic binders. An amorphous binder (2), consisting of finely-divided spheres, is surrounded by a layer (1) of thermoplastic binder of higher crystallinity with a narrow range of softening temperature. Considering the spherical component (2), its glass transition temperature Tg is greater than that of the higher crystallinity (1) component but less than its m.pt. Tm. The spherical component (2) forms dome-shaped projections on the open surfaces of the coating (1, 2). Also claimed is a magnetic transfer band or tape. This consists of a flexible layer substrate (4) with at least one separable magnetic recording layer (3) and a covering layer (1, 2), pref. formed by a heat sealed layer formed as described.

公开(公告)号：DE59207251D1

公开(公告)日：1996-10-31

申请号：DE59207251

申请日：1992-12-09

Applicant: BASF MAGNETICS GMBH

Inventor： SCHNEIDER NORBERT ,  LEHNER AUGUST ,  KLEIN URSULA ,  LENZ WERNER DR ,  BALZ WERNER DR ,  KOHL ALBERT ,  BETTINGER GUENTER

IPC: C08K9/06 ,  C08K9/04 ,  C08L101/00 ,  C09D5/23 ,  F02B75/02 ,  G11B5/708 ,  G11B5/73

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：FR2714909A1

公开(公告)日：1995-07-13

申请号：FR9500186

申请日：1995-01-10

Applicant: BASF MAGNETICS GMBH

Inventor： WUENSCH THOMAS ,  BRODT GREGOR ,  KRESS RIA ,  SCHNEIDER NORBERT ,  KOHL ALBERT ,  LEHNER AUGUST ,  BALZ WERNER

IPC: C08G18/12 ,  C08G18/61 ,  C08G18/65 ,  C08G18/66 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  C08G18/32

Abstract: Preparation of materials (I) having an average molecular weight from 4000 to 30,000, obtainable by reacting 1) a polyurethane (II) comprising a) 1 mol of a diol (III) having an average molecular weight of from 400 to 4000, b) from 0.3 to 9 mol of an aliphatic or cycloaliphatic diol (IV) of 2 to 18 carbon atoms, c) from 0.3 to 9 mol of an aromatic diol (V) of 8 to 30 carbon atoms, d) from 0.01 to 1 mol of a trihydric alcohol (VI) of 3 to 18 carbon atoms, e) from 0.001 to 1 mol of a polyhydric alcohol (VII) of 3 to 14 carbon atoms which contains a tertiary amino group and f) an amount of a diisocyanate (VIII) of 6 to 30 carbon atoms such that the molar ratio of the isocyanate groups to the total number of hydroxyl groups in (III) to (VII) is from 1.05:1 to 1.4:1 with 2) a compound (IX) which contains one or more hydroxyl groups and one or more amino groups reactive toward isocyanate groups, the amount of (IX) being such that the number of reactive amino groups corresponds to the number of isocyanate groups in the polyurethane (II). The materials may be used as crosslinkable binder components for pigment-containing coatings, in particular for the production of magnetic recording materials.

公开(公告)号：DE4445174A1

公开(公告)日：1995-07-13

申请号：DE4445174

申请日：1994-12-17

Applicant: BASF MAGNETICS GMBH

Inventor： WUENSCH THOMAS ,  BRODT GREGOR ,  KRESS RIA ,  SCHNEIDER NORBERT ,  KOHL ALBERT ,  LEHNER AUGUST ,  BALZ WERNER

IPC: C08G18/12 ,  C08G18/61 ,  C08G18/65 ,  C08G18/66 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702

Abstract: Curable binder component (1) with a mol.wt. of 4000-30000, useful for pigmented coatings, is prepd. from a polyurethane (II) obtd. by reacting (a) 1 mole diol with a mol.wt. of 400-4000, (b) 0.3-9 mole 2-18C (cyclo)aliphatic diol, (c) 0.3-9 mole 8-30 C aromatic diol, (d) 0.01-1 mole 3-18C triol and (e) 0.001-1 mole 3-14C polyol contg. a tert. amino gp. with (f) a 6-30 C diisocyanate, using a molar ratio of NCO gps. in (f) to total OH gp. in (a-e) of (1.05-1.4):1. (I) is prepd. by reacting (II) with a cpd. (III) having OH gp(s). and also NCO-reactive amino gp(s). in such an amt. that the no. of reaction amino gps. in (III) corresponds to the no. of NCO gps. in (II). Also claimed are articles with a coating, esp. a coating contg. a magnetic pigment, and magnetic recording materials contg. (I); and the coating process.

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：DE4039748A1

公开(公告)日：1992-06-17

申请号：DE4039748

申请日：1990-12-13

Applicant: BASF MAGNETICS GMBH

Inventor： KEPPLER UWE DR ,  BOBRICH MICHAEL DR ,  AUWETER HELMUT DR ,  SUETTINGER RUDOLF DR ,  KOHL ALBERT ,  DICKOW HERMANN DR ,  LENZ WERNER DR ,  BRODT GREGOR DR

IPC: C08G18/08 ,  C08G18/12 ,  C09D5/00 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702

Abstract: In magnetic recording media consisting of a nonmagnetic substrate and one or more magnetizable layers bonded thereon and based on a polyurethane binder, the binder consists of not less than 50% by weight of an isocyanate-free, branched polyurethane which is soluble in tetrahydrofuran and has sulfonate groups along the polyurethane branches and OH-containing urea groups at the chain ends and a molecular weight of from 4,000 to 30,000.