1.
    发明专利
    未知

    公开(公告)号:DE4110808A1

    公开(公告)日:1992-10-08

    申请号:DE4110808

    申请日:1991-04-04

    Applicant: BASF AG

    Abstract: Indolicin trimethine dyes of general formula (I) in which the meanings of the variables are: R represents C1-C22 alkyl groups which may carry the following substituents: halogen, hydroxy, C1-C6 alkoxy, benzyloxy, C1-C6 alkanoyl, C1-C6 alkoxycarbonyl or phenyl; C3-C7 cycloalkyl groups which may carry the following substituents: halogen, C1-C4 alkyl or C1-C4 alkoxy; phenyl groups which may carry the following substituents: halogen, hydroxy, cyano, C1-C6 alkyl, C1-C6 alkoxy, carboxy, C1-C6 alkoxycarbonyl or hydroxysulphonyl; R represents one of the radicals R , where the C chain of the C1-C22 alkyl groups may be interrupted into ether function by one to five oxygen atoms; R represents hydrogen, halogen or C1-C6 alkyl; Z represents -O- or -NH-; AN represents the equivalent of an acid anion; and optical recording media for the recording and reproduction of information by means of laser beams having an indolicin trimethine dye I in the light-sensitive layer.

    10.
    发明专利
    未知

    公开(公告)号:DE19632204A1

    公开(公告)日:1998-02-12

    申请号:DE19632204

    申请日:1996-08-09

    Applicant: BASF AG

    Abstract: Production of N,N'-di-C1-C4-alkyl perylene-3,4,9,10-tetracarboxylic acid diimides (I) by the reaction of perylene-3,4,9,10-tetracarboxylic acid diimide (II) with a C1-C4-alkyl halogenide, said reaction being effected in a dipolar-aprotic organic solvent in the presence of an anorganic base.

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