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公开(公告)号：DE59006663D1
公开(公告)日：1994-09-08
申请号：DE59006663
申请日：1990-04-05
Applicant: BASF AG
Inventor： PLATZ HORST , ENGELHARDT PETER , SOMMERMANN FRIEDRICH DR , KOHL ALBERT , KLAUSMANN JUERGEN , BAUR REINHOLD DR , HEILMANN PETER DR , ROLLER HERMANN
Abstract: The invention relates to a process for the production of magnetic recording media by dispersing pulverulent, magnetic material in a mixture of solvents, organic polymer binders, dispersants and further customary additives in a stirred ball mill, followed by aftertreatment in a ball mill filled with grinding media, application of the resulting dispersion as a layer on a substrate and subsequent solidification of the layer.
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公开(公告)号：DE3477079D1
公开(公告)日：1989-04-13
申请号：DE3477079
申请日：1984-11-22
Applicant: BASF AG
Inventor： GUETTNER CHRISTINE , HEILMANN PETER DR , KULLMANN UDO DR , MAYER DIETER DR , GRAU WERNER DR
Abstract: Magnetic recording media possess, on a dimensionally stable base which may or may not be provided with a non-magnetic lower layer, a thin ferromagnetic metal layer on which a protective layer consisting of a silicon monoxide/chromium dual coating is applied.
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公开(公告)号：AT253105T
公开(公告)日：2003-11-15
申请号：AT00118522
申请日：2000-08-25
Applicant: BASF AG
Inventor： PRECHTL FRANK DR , SCHNEIDER NORBERT , MEYER FRANK DR , PARKER ROBERT , RICHTER VOLKER , HEILMANN PETER DR , KOCH VOLKER DR , SCHUHMACHER PETER DR
IPC: G02B5/30 , C08F2/46 , C08F20/26 , C09B67/00 , C09B67/02 , C09B67/08 , C09B67/20 , C09D5/29 , C09D5/36 , C09D201/00 , C09K19/00 , G02F1/1335
Abstract: Cholesteric laminate material has at least one 3-dimensionally crosslinked, oriented cholesteric layer (I) showing a homogeneous interference line pattern over the entire thickness. Independent claims are also included for the following: (a) cholesteric pigment comprising layer(s) (I) with an average particle size of 5-50 mu m and thickness of 0.2-5 mu m; (b) compositions containing the pigment(s); (c) polarizers, comprising the laminate and optionally a substrate foil; (d) broad band polarizers comprising laminates with a total thickness of about 2-50 mu m (without substrate film) and 3-20 cholesteric layers with attuned reflection maxima; and (e) the production of the laminate with layer(s) (I).
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公开(公告)号：DE3742767A1
公开(公告)日：1989-06-29
申请号：DE3742767
申请日：1987-12-17
Applicant: BASF AG
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Patent Agency Ranking
公开(公告)号：DE19738368A1
公开(公告)日：1999-03-04
申请号：DE19738368
申请日：1997-09-02
Applicant: BASF AG
Inventor： SCHUHMACHER PETER DR , SCHNEIDER NORBERT , RICHTER VOLKER , KELLER HARALD DR , BETTINGER GUENTER , BLASCHKA PETER , HEILMANN PETER DR , MEYER FRANK DR
IPC: B05D7/26 , C08G59/20 , C09B67/00 , C09B67/20 , C09C1/00 , C09C1/24 , C09C1/34 , C09C1/56 , C09C3/00 , C09D5/29 , C09D5/36 , C09D17/00 , C09K19/00 , C09K19/38 , C14C11/00 , A61K7/00 , B29C41/36 , C14C9/00
Abstract: A platelet-form cholesteric multilayer pigment has layers A /B/A where A and A are cholesteric layers and B is an intermediate layer partially or wholly absorbing the light transmitted by A and A . An Independent claim relates to the preparation of the pigment by depositing the layers simultaneously or sequentially on a carrier, hardening them, removing the carrier and pulverising the layers.
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公开(公告)号：DE3912082A1
公开(公告)日：1990-10-18
申请号：DE3912082
申请日：1989-04-13
Applicant: BASF AG
Inventor： PLATZ HORST , ENGELHARDT PETER , SOMMERMANN FRIEDRICH DR , KOHL ALBERT , KLAUSMANN JUERGEN , BAUR REINHOLD DR , HEILMANN PETER DR , ROLLER HERMANN
Abstract: The invention relates to a process for the production of magnetic recording media by dispersing pulverulent, magnetic material in a mixture of solvents, organic polymer binders, dispersants and further customary additives in a stirred ball mill, followed by aftertreatment in a ball mill filled with grinding media, application of the resulting dispersion as a layer on a substrate and subsequent solidification of the layer.
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公开(公告)号：DE3343107A1
公开(公告)日：1985-06-05
申请号：DE3343107
申请日：1983-11-29
Applicant: BASF AG
Inventor： DORSCH CHRISTINE , HEILMANN PETER DR , KULLMANN UDO DR , MAYER DIETER DR , GRAU WERNER DR
Abstract: Magnetic recording media possess, on a dimensionally stable base which may or may not be provided with a non-magnetic lower layer, a thin ferromagnetic metal layer on which a protective layer consisting of a silicon monoxide/chromium dual coating is applied.
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公开(公告)号：ES2209737T3
公开(公告)日：2004-07-01
申请号：ES00118522
申请日：2000-08-25
Applicant: BASF AG
Inventor： PRECHTL FRANK DR , SCHNEIDER NORBERT , MEYER FRANK DR , PARKER ROBERT , RICHTER VOLKER , HEILMANN PETER DR
IPC: G02B5/30 , C08F2/46 , C08F20/26 , C09B67/00 , C09B67/02 , C09B67/08 , C09B67/20 , C09D5/29 , C09D5/36 , C09D201/00 , C09K19/00 , G02F1/1335
Abstract: Cholesteric laminate material has at least one 3-dimensionally crosslinked, oriented cholesteric layer (I) showing a homogeneous interference line pattern over the entire thickness. Independent claims are also included for the following: (a) cholesteric pigment comprising layer(s) (I) with an average particle size of 5-50 mu m and thickness of 0.2-5 mu m; (b) compositions containing the pigment(s); (c) polarizers, comprising the laminate and optionally a substrate foil; (d) broad band polarizers comprising laminates with a total thickness of about 2-50 mu m (without substrate film) and 3-20 cholesteric layers with attuned reflection maxima; and (e) the production of the laminate with layer(s) (I).
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公开(公告)号：DE3876414D1
公开(公告)日：1993-01-14
申请号：DE3876414
申请日：1988-12-10
Applicant: BASF AG
Inventor： NOWAK UWE DR , HOFFMANN HANS-JOACHIM DR , DOERR KURT DR , KOCH VOLKER DR , HEILMANN PETER DR , FRECHEN THOMAS DR , HITZFELD MICHAEL DR
Abstract: The recording tape or carrier consists essentially of a non-magnetic base and a thin layer of metallic and magnetic material deposited on the top, with a surface layer and a protecting layer of amorphous carbon which contains some hydrogen. This surface layer is produced in a vacuum chamber by means of a ''sputtering'' process with a carbon target.
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