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    At least two markers that absorb in the 600-1200 nm spectrum region and re-emit fluorescent light for marking liquids
    4.
    发明专利
    At least two markers that absorb in the 600-1200 nm spectrum region and re-emit fluorescent light for marking liquids 未知

    公开(公告)号：NZ508195A

    公开(公告)日：2002-07-26

    申请号：NZ50819599

    申请日：1999-04-12

    Applicant: BASF AG

    Inventor： WAGENBLAST GERHARD ,  BECK KARIN HEIDRUM ,  VAMVAKARIS CHRISTOS ,  MEYER FRANK

    IPC: G01N33/28 ,  C10L1/00 ,  C10L1/10 ,  G01N21/64

    Abstract: Described is a method for marking liquids with at least two marker substances. The marker substances are absorbent in the spectral range of 600 to 1200 nm and emit fluorescence radiation as a result. The absorption range of at least one marker substance overlaps the absorption range of at least one other marker substance. Also described is a method for detecting marker substances in liquids which have been marked by the above method. This method is characterised in that the sources of radiation used emit radiation in the absorption ranges of the marker substances, so that the fluorescence radiation emitted by the marker substances can then be detected. At least one of the radiation sources emits radiation in the absorption range in which at least one marker substance overlaps with at least one other marker substance, and the number of sources of radiation used is smaller than, or the same as, the number of marker substances. Also described are liquids which have been marked by the above method.

    5.
    发明专利
    未知

    公开(公告)号：BR9508401A

    公开(公告)日：1998-05-19

    申请号：BR9508401

    申请日：1995-07-03

    Applicant: BASF AG

    Inventor： KRAH CLAUDIA ,  SCHLOSSER ULRIKE ,  MAYER UDO ,  BECK KARIN HEIDRUM

    IPC: C10L1/04 ,  C10L1/00 ,  C10L1/14 ,  C10L1/16 ,  C10L1/18 ,  C10L1/185 ,  C10L1/188 ,  C10L1/19 ,  C10L1/22 ,  C10L1/222 ,  C10L1/223 ,  C10L1/232 ,  C10L1/233 ,  C10M171/00 ,  G01N33/28 ,  G01N31/22

    Abstract: The invention relates to the use of benzaldehydes of the formula (I), in which ring A can be benzo-anellated and R , R and R are hydrogen, hydroxy, C1-C15 alkyl, C1-C15 alkoxy, cyano, nitro or a radical of the formula NR R or COOR , in which R is hydrogen or possibly substituted C1-C15 alkyl, R is possibly substituted C1-C15 alkyl or a radical of the formula L-NX X , in which L is C2-C8 alkylene and X and X are mutually independently C1-C6 alkyl or, together with the nitrogen atom bonding them, a heterocyclic radical, and R is hydrogen, possibly substituted C1-C15 alkyl or a radical of the formula L-NX X , in which L, X and X have the above meanings, as marking agents for hydrocarbons, a process for detecting these benzaldehydes in hydrocarbons and hydrocarbons containing the above benzaldehydes.

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