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公开(公告)号：DE4241505A1
公开(公告)日：1994-06-16
申请号：DE4241505
申请日：1992-12-10
Applicant: BASF MAGNETICS GMBH
Inventor： BRODT GREGOR DR , BOBRICH MICHAEL DR , KRESS RIA DR
IPC: C08G18/65 , C08G18/38 , C09D5/23 , C09D175/04 , G11B5/702
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公开(公告)号：DE59305529D1
公开(公告)日：1997-04-03
申请号：DE59305529
申请日：1993-10-02
Applicant: BASF MAGNETICS GMBH
Inventor： BOBRICH MICHAEL DR , BRODT GREGOR DR , KRESS RIA DR , MELZER MILENA , SCHNEIDER NORBERT
Abstract: The invention relates to magnetic recording carriers (media) comprising a nonmagnetic carrier (support, base) material and at least one magnetisable layer, applied thereto in a strongly adhesive manner, based on a magnetic material dispersed in at least one polyurea-urethane and at least one polyurethane-urea (meth)acrylate, where the polyurethane-urea (meth)acrylate is obtained by reacting a polyacrylate with a mixture of diisocyanates and polyisocyanates and converting the remaining NCO groups into substituted urea groups by means of aminoalkylenetrialkoxysilanes.
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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
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.
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公开(公告)号：DE4234325A1
公开(公告)日：1994-04-14
申请号：DE4234325
申请日：1992-10-12
Applicant: BASF MAGNETICS GMBH
Inventor： BOBRICH MICHAEL DR , BRODT GREGOR DR , KRESS RIA DR , MELZER MILENA , SCHNEIDER NORBERT
Abstract: The invention relates to magnetic recording carriers (media) comprising a nonmagnetic carrier (support, base) material and at least one magnetisable layer, applied thereto in a strongly adhesive manner, based on a magnetic material dispersed in at least one polyurea-urethane and at least one polyurethane-urea (meth)acrylate, where the polyurethane-urea (meth)acrylate is obtained by reacting a polyacrylate with a mixture of diisocyanates and polyisocyanates and converting the remaining NCO groups into substituted urea groups by means of aminoalkylenetrialkoxysilanes.
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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
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.
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Patent Agency Ranking
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.
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公开(公告)号：DE4433931A1
公开(公告)日：1995-04-06
申请号：DE4433931
申请日：1994-09-23
Applicant: BASF MAGNETICS GMBH
Inventor： BRODT GREGOR DR , VASS ATTILA DR , LOCH WERNER DR , LEHNER AUGUST , LENZ WERNER DR , SCHNEIDER NORBERT
IPC: C08G18/10 , C08G18/62 , C08G18/78 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , C08G18/83
Abstract: The invention concerns magnetic recording media consisting of a nonmagnetic base material and, firmly adherent thereto, at least one magnetisable layer based on a magnetic material dispersed in a binder mixture which contains at least one hydroxyl-containing, preferably low molecular weight polyurea urethane and a polyurethane urea (meth)acrylate, characterised in that the polyurethane urea (meth)acrylate is obtained by reacting a poly(meth)acrylate having up to 2 OH end groups per mole and a molecular weight between 200 and 50000 with a mixture of aliphatic polyisocyanates having an average functionality of 3.0 to 6.0 NCO groups per mole and consisting of 0.1 to 10% by weight of a diisocyanate, 30 to 80% by weight of a triisocyanate, and 20 to 60% by weight of an isocyanate having a functionality of 4 to 10, with the proviso that 1.2 to 3.0 NCO groups are reacted per OH group and the remaining NCO groups are converted with polyfunctional amines or a mixture of various polyfunctional amines in substituted urea end groups.
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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.
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公开(公告)号：DE59102837D1
公开(公告)日：1994-10-13
申请号：DE59102837
申请日：1991-12-03
Applicant: BASF MAGNETICS GMBH
Inventor： KEPPELER UWE DR , BOBRICH MICHAEL DR , AUWETER HELMUT DR , SUETTINGER RUDOLF DR , KOHL ALBERT , DIKOW 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.
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公开(公告)号：DE4241506A1
公开(公告)日：1994-06-16
申请号：DE4241506
申请日：1992-12-10
Applicant: BASF MAGNETICS GMBH
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