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    New azulene quadratic acid dyestuff and azulene cpds.
    5.
    发明专利
    New azulene quadratic acid dyestuff and azulene cpds. 未知

    公开(公告)号：DE3816187A1

    公开(公告)日：1989-11-23

    申请号：DE3816187

    申请日：1988-05-11

    Applicant: BASF AG

    Inventor： SCHROTT WOLFGANG DR ,  NEUMANN PETER DR ,  BROSIUS SIBYLLE DR ,  BARZYNSKI HELMUT DR ,  SCHOMANN KLAUS DIETER DR ,  KUPPELMAIER HARALD DR

    IPC: C09B57/00

    Abstract: New azulene quadratic acid syestuffs (I); and New 4-alkyl- and 4-di-substd. phosphonylmethyl-azulene derivs. (II) are claimed. R1 = 1-12C alkyl (opt. substd. by halogen, amino, OH, 1-12C alkoxy, (substd.) phenyl, COOH, 1-12C (halo)-alkoxycarbonyl, 1-12C phenylalkoxycarbonyl, CN, 1-12C alkanoyloxy, (substd.) benzoyloxy and/or a di-substd. phosphonyl gp. of the formula PO2(R6)(R7) with R6 and R7 each = 1-4C alkyl or Ph), COOH, 1-12C alkoxycarbonyl (opt. with one or more O atoms in the alkyl chain), carbamoyl or 1-4C mono- or dialkylcarbamoyl; R2-5 each = H or 1-12C alkyl, substd. by halogen, amino, 1-12C alkoxy, (substd.) phenyl, COOH, 1-12C alkoxycarbonyl or CN; if R5 = H, the positions of the CH2-R1 and R4 substits. in one or both azulene rings can be interchanged; and R1 can also = H of R5 = methyl or ethyl with a (substd.) phenyl substit., 3-12C alkyl or at least one of R2 and R4 = (substd.) phenyl.

    Optical recording medium, and process for the preparation thereof
    9.
    发明专利
    Optical recording medium, and process for the preparation thereof 未知

    公开(公告)号：DE3510361A1

    公开(公告)日：1985-10-03

    申请号：DE3510361

    申请日：1985-03-22

    Applicant: BASF AG

    Inventor： NEUMANN PETER DR ,  ALBERT BERNHARD DR ,  EPPLE GERHARD DR ,  FLOHR HELMUT DR ,  SCHOMANN KLAUS DIETER DR

    IPC: G11B7/244 ,  G11B7/24

    Abstract: The medium contains a carrier layer onto which a light-absorbing layer is applied which either consists of a dye of the formula or which contains this dye. In the formula, at least one X is and the other X are hydrogen, -OR , -SR and/or -NO2, A is alkyl which may be substituted, phenyl, benzyl or phenylethyl, or a group in 2, 3, position, n is 0, 1, 2, 3 or 4, the number of -NO2 groups being 2, R , R and R are hydrogen, alkyl, alkoxyalkyl, cyclohexyl, phenyl or phenylalkyl, the phenyl radicals possibly being further substituted, or are a saturated 5- or 6-membered heterocyclic ring and R is alkyl, alkoxyalkyl or C2/C3-alkylcarboalkoxy. The dyes have an absorption maximum in the range from 600 to 660 nm. The recording medium can be written and read with He-Ne lasers.

    10.
    发明专利
    未知

    公开(公告)号：DE59007128D1

    公开(公告)日：1994-10-20

    申请号：DE59007128

    申请日：1990-10-15

    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.

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