公开(公告)号：DE4040906A1

公开(公告)日：1992-06-25

申请号：DE4040906

申请日：1990-12-20

Applicant: BASF AG

Inventor： SCHMITT MICHAEL DR ,  ALBERT BERNHARD DR ,  BROSIUS SIBYLLE DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: B41M5/26 ,  C09B57/00 ,  G01D15/14 ,  G11B7/244

公开(公告)号：DE4021078A1

公开(公告)日：1992-01-09

申请号：DE4021078

申请日：1990-07-03

Applicant: BASF AG

Inventor： ACKER MICHAEL DR ,  NEUMANN PETER DR ,  ALBERT BERNHARD DR ,  BROSIUS SIBYLLE DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: B41M5/26 ,  C09B23/00 ,  C09B23/01 ,  C09B23/08 ,  G11B7/24 ,  G11B7/244 ,  G11B7/2472 ,  G11B7/253 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/2595

公开(公告)号：DE3820001A1

公开(公告)日：1989-12-14

申请号：DE3820001

申请日：1988-06-11

Applicant: BASF AG

Inventor： BROSIUS SIBYLLE DR ,  BARZYNSKI HELMUT DR ,  FEUERHERD KARL-HEINZ DR ,  SCHROTT WOLFGANG DR ,  ALBERT BERNHARD DR ,  ACKER MICHAEL DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR ,  SCHMITT MICHAEL DR

IPC: B41M5/26 ,  G11B7/24 ,  G11B7/244 ,  G11B7/245

Abstract: The invention relates to an optical recording medium of a base material and a light-absorbing layer, consisting substantially of a soluble mixture of a thermoplastic binder and at least one pigment, the thermoplastic binder being a phenol-aldehyde resin which is soluble in alcohols having a boiling point of less than 200 DEG C and which has an average molecular weight greater than 300.

公开(公告)号：DE3631843A1

公开(公告)日：1988-03-24

申请号：DE3631843

申请日：1986-09-19

Applicant: BASF AG

Inventor： DUST MATTHIAS DR ,  NEUMANN PETER DR ,  HAUSER PETER DR ,  WAGENBLAST GERHARD DR ,  BENTHACK-THOMS HEIDI DR ,  BARZYNSKI HELMUT DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: C09B57/06 ,  G11B7/24 ,  G03C1/72

公开(公告)号：AT19705T

公开(公告)日：1986-05-15

申请号：AT82107882

申请日：1982-08-27

Applicant: BASF AG

Inventor： ROOS ROLAND ,  SCHOMANN KLAUS DIETER DR ,  MUENZNER WULF DR

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/087 ,  G11B23/50 ,  H05F3/00

公开(公告)号：AT16536T

公开(公告)日：1985-11-15

申请号：AT82107881

申请日：1982-08-27

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  MUENZNER WULF DR ,  SCHOMANN KLAUS DIETER DR ,  BERGER HEINZ ,  ROOS ROLAND

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/50 ,  H05F3/02

公开(公告)号：DE3246110A1

公开(公告)日：1983-06-30

申请号：DE3246110

申请日：1982-12-13

Applicant: BASF AG

Inventor： SCHOMANN KLAUS DIETER DR ,  ROOS ROLAND

IPC: G01R33/12 ,  G11B20/18 ,  G11B5/02 ,  G11B27/10

Abstract: In methods and arrangements for locating defects (DO) on a magnetic recording medium, magnetic markings are made with the aid of the read/write head or the write head or the erase head of the recorder or drive on which playback is performed, to be precise by overwriting the recording made at the same time or previously with a new, preferably long-wave recording, or by erasing the recording made at the same time or previously, beginning or ending approximately at the moment of the disturbance by a defect to be marked. In practice, several tracks are erased or overwritten.

公开(公告)号：DE3936051A1

公开(公告)日：1991-05-02

申请号：DE3936051

申请日：1989-10-28

Applicant: BASF AG

Inventor： ACKER MICHAEL DR ,  NEUMANN PETER DR ,  ALBERT BERNHARD DR ,  BROSIUS SIBYLLE DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: B41M5/26 ,  C09B23/00 ,  C09B23/01 ,  C09B23/02 ,  C09B23/08 ,  G03C1/72 ,  G11B7/24 ,  G11B7/2472 ,  G11B7/253 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534

Abstract: Quinoxalinepentamethine dyes of the formula where R1 is hydrogen, substituted or unsubstituted C1-C22-alkyl or substituted or unsubstituted C5-C7-cycloalkyl, R2 is hydrogen, chlorine, bromine or C1-C6-alkyl, Y is a radical of the formula -N=C(CH3)- or -N(R1)-CO-, where R1 is as defined above, Z1 and Z2 are each hydrogen or together are unsubstituted or substituted C2-C3-alkylene, X(-) is an anion and the rings A and B independently of each other may be substituted and/or benzofused and are useful in optical recording media.

公开(公告)号：DE3935526A1

公开(公告)日：1991-05-02

申请号：DE3935526

申请日：1989-10-25

Applicant: BASF AG

Inventor： SCHMITT MICHAEL DR ,  ALBERT BERNHARD DR ,  BROSIUS SIBYLLE DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: B41M5/26 ,  C07C233/10 ,  C09B57/00 ,  G03C1/72 ,  G11B7/24

Abstract: Azulene squaric acid dyes containing amide groups, of the formula … … in which …… L denotes C1-C12-alkylene which is optionally substituted by phenyl, … R and R independently of one another denote hydrogen, optionally substituted C1-C20-alkyl, C5-C7-cycloalkyl, optionally substituted phenyl, 2,2,6,6-tetramethylpiperidin-4-yl or cyclohexylaminocarbonyl and … R , R , R and R independently of one another denote hydrogen or optionally substituted C1-C12-alkyl, … with the proviso that if R denotes hydrogen the ring positions of the substituents CH2-L-CO-NR R and R on one or both azulene rings can also be interchanged with one another within an azulene ring, their intermediate products and an optical recording medium which contains the novel dyes.

公开(公告)号：DE3935524A1

公开(公告)日：1991-05-02

申请号：DE3935524

申请日：1989-10-25

Applicant: BASF AG

Inventor： SCHMITT MICHAEL DR ,  SCHROTT WOLFGANG DR ,  NEUMANN PETER DR ,  BROSIUS SIBYLLE DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

IPC: B41M5/26 ,  C07C69/007 ,  C07D307/68 ,  C09B57/00 ,  G03C1/72 ,  G11B7/24

Abstract: Azulene squaric acid dyes containing ester groups, of the formula in which L denotes C1-C12-alkylene which is optionally substituted by phenyl, R denotes C1-C12-alkyl, mono- or polyunsaturated C1-C12-alkenyl, which can be substituted by phenyl, C5-C7-cycloalkyl, C5-C7-cycloalkenyl, optionally substituted phenyl, pyrrolyl, furanyl, thienyl or pyridyl and R , R , R and R independently of one another denote hydrogen or optionally substituted C1-C12-alkyl, with the proviso that if R denotes hydrogen, the ring positions of the substituents CH2-L-O-CO-R and R on one or both azulene rings can also be interchanged with one another within an azulene ring, their intermediates and an optical recording medium which contains the novel dyes.