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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
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公开(公告)号：DE3622138A1
公开(公告)日：1988-01-07
申请号：DE3622138
申请日：1986-07-02
Applicant: BASF AG
Inventor： DUST MATTHIAS DR , NEUMANN PETER DR
IPC: B41M5/26 , G11B7/24 , G11B7/244 , G11B7/247 , G11B7/2472 , G11B7/253 , G11B7/2534 , G11B7/254 , G11B7/2542 , G11B7/258 , G11B7/2585 , G11B7/26
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公开(公告)号：ES2098596T3
公开(公告)日：1997-05-01
申请号：ES93110227
申请日：1993-06-26
Applicant: BASF AG
Inventor： DUST MATTHIAS DR , BERGMANN UDO DR , SCHWANTJE GERD DR
IPC: C07C253/00 , C07C253/16 , C07C255/58 , C07C303/02 , C07C303/04 , C07C309/38 , C07C309/53 , C09B1/22 , C09B1/24
Abstract: 1,4-Diaminoanthraquinone-2,3-disulfonic acid (I) is prepared by reacting 1,4-diamino-2,3-dihaloanthraquinone (II) with boric acid in an inert organic solvent and further reacting the resulting reaction product (IIa) with an aqueous sulfite solution, by a method in which the inert organic solvent used is a nonpolar solvent having a boiling point of >/=130 DEG C. and a density of
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公开(公告)号：DE3866522D1
公开(公告)日：1992-01-09
申请号：DE3866522
申请日：1988-11-11
Applicant: BASF AG
Inventor： DUST MATTHIAS DR , NEUMANN PETER DR , ACKER MICHAEL DR , BENTHACK-THOMS HEIDI DR , SCHOMANN KLAUS-DIETER DR , KUPPELMAIER HARALD
IPC: B41M5/26 , C09B23/01 , C09B57/06 , G11B7/20 , G11B7/247 , G11B7/253 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2536 , G11B7/254 , G11B7/2542 , G11B7/258 , G11B7/2585 , G11B7/2595
Abstract: New naphtholactam trimethin dyestuffs are of formula (I);R1-4 independently = (substd.) 1-22C alkyl, opt. with O atom(s) or imino or 1-4C alkylimino gp(s). in the chain, (substd.) 5-7C cycloalkyl or (substd.) phenyl; rings A, B, C and D may be substd. and/or benzoanellated.
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公开(公告)号：DE3810642A1
公开(公告)日：1989-10-12
申请号：DE3810642
申请日：1988-03-29
Applicant: BASF AG
Inventor： ACKER MICHAEL DR , DUST MATTHIAS DR , NEUMANN PETER DR , BROSIUS SIBYLLE DR , SCHOMANN KLAUS DIETER DR , KUPPELMAIER HARALD DR
IPC: B41M5/26 , C09B23/00 , C09B23/01 , C09B23/08 , G11B7/24 , G11B7/2472 , G11B7/253 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2536 , G11B7/258 , G11B7/2585 , G11B7/2595
Abstract: Methine dyes of the formula where R1, R2, R3, R4, X, Y and the rings A and B each have specific meanings, and methine dyes obtainable by reacting an organic mono- or polyisocyanate with such a methine dye of the abovementioned formal where only the radicals R1 and/and R4 have a group reacting with an organic mono- or polyisocyanate are useful in optical recording media.
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Patent Agency Ranking
公开(公告)号：DE3783982D1
公开(公告)日：1993-03-18
申请号：DE3783982
申请日：1987-09-17
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
Abstract: New naphtholactam-quadratic acid dyestuffs are 2,4-bis(benz(cd)indol-2-yl) methenyl-quadratic acid betaines of formula (I). R1 and R2 independently = opt. substd. 3-22C alkyl, opt. with O atoms in the chain, 1-4C aralky, 5-7C cycloalkyl or phenyl gps.; rings A, B, C and D can be substd. or benzo-anellated.
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公开(公告)号：DE3580536D1
公开(公告)日：1990-12-20
申请号：DE3580536
申请日：1985-08-02
Applicant: BASF AG
Inventor： ETZBACH KARL-HEINZ DR , NEUMANN PETER DR , DUST MATTHIAS DR , RINGSDORF HELMUT PROF DR , SCHMIDT HANS-WERNER , BAUR GUENTER , WINDSCHEID FRIEDRICH , KIEFER RUDOLF
IPC: B41M5/26 , C09K19/38 , C09K19/40 , G02F1/13 , G11B7/24 , G11B7/244 , G11B7/245 , G11B7/248 , G11B7/25
Abstract: An optical recording medium contains, on a base, one or more dyes and a polymer which forms liquid-crystalline phases. The information is written into the uniformly oriented liquid-crystalline polymer layer, for example by means of a laser. During this procedure, the polymer heats up locally to above a phase transition temperature. By cooling, the resulting change is frozen in the glass state. The information can be erased by applying an electric field and/or heating. The recording material permits high-contrast storage and possesses high sensitivity, good resolution and excellent stability.
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公开(公告)号：DE3835520A1
公开(公告)日：1990-04-26
申请号：DE3835520
申请日：1988-10-19
Applicant: BASF AG
Inventor： LEYRER REINHOLD J DR , NEUMANN PETER DR , DUST MATTHIAS DR
Abstract: A description is given of a novel panchromatic electrophotographic recording element, which exhibits an electrically conductive base and at least one photoconductive coating. In this case, the photoconductive coating contains at least one binder, compounds or sensitisers generating a plurality of charge carriers, at least one compound (photoconductor) transporting charge carriers as well as, where appropriate, additives. The sensitisers themselves are Victoria Blue FB (C.I. 44045), Crystal Violet FN (C.I. 42555), Rhodamin FB (C.I. 45170), Astrazon Orange R (C.I. 48040) and/or Astrazon Orange G (C.I. 48035), which are used together with naphtholactam dyes and/or isoindolenine dyes. In this case, the naphtholactam dyes exhibit within the molecule at least one chromophor of the general basic structure and the isoindolenine dyes exhibit within the molecule at least one chromophor of the general basic structure
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公开(公告)号：DE58906871D1
公开(公告)日：1994-03-17
申请号：DE58906871
申请日：1989-07-22
Applicant: BASF AG
Inventor： PATSCH MANFRED DR , NAHR UWE DR , WIRSING FRIEDRICH DR , JESSEN JOERG L DR , PANDL KLAUS DR , MARSCHNER CLAUS DR , DUST MATTHIAS DR
IPC: C07D251/44 , C07C317/00 , C07C317/14 , C07C317/18 , C07C317/32 , C07C323/00 , C07C323/12 , C07C323/36 , C07C323/65 , C07D213/76 , C07D213/82 , C07D231/46 , C07D237/14 , C07D239/30 , C07D239/42 , C07D239/50 , C07D239/62 , C07D251/40 , C07D251/50 , C07D327/06 , C07D401/12 , C07D403/12 , C07D498/04 , C09B62/02 , C09B62/022 , C09B62/44 , C09B62/503 , C09B62/505 , C09B62/51 , C09B62/513 , C09B62/517
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公开(公告)号：DE4222302A1
公开(公告)日：1994-01-13
申请号：DE4222302
申请日：1992-07-08
Applicant: BASF AG
Inventor： DUST MATTHIAS DR , BERGMANN UDO DR , SCHWANTJE GERD DR
IPC: C07C253/00 , C07C253/16 , C07C255/58 , C07C303/02 , C07C303/04 , C07C309/38 , C07C309/53 , C09B1/22 , C09B1/24
Abstract: 1,4-Diaminoanthraquinone-2,3-disulfonic acid (I) is prepared by reacting 1,4-diamino-2,3-dihaloanthraquinone (II) with boric acid in an inert organic solvent and further reacting the resulting reaction product (IIa) with an aqueous sulfite solution, by a method in which the inert organic solvent used is a nonpolar solvent having a boiling point of >/=130 DEG C. and a density of
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