METHOD FOR MARKING LIQUIDS WITH AT LEAST TWO MARKER SUBSTANCES AND METHOD FOR DETECTING THEM

    公开(公告)号:HU0102734A2

    公开(公告)日:2001-12-28

    申请号:HU0102734

    申请日:1999-04-12

    Applicant: BASF AG

    Abstract: The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the absorption range of at least one marker overlaps with the absorption range of at least one other marker.The present invention further relates to a method for detecting markers in liquids marked by the method of the invention, which comprises using light sources which emit radiation in the absorption ranges of said markers and detecting the fluorescent light reemitted by said markers, at least one of said light sources emitting radiation in the overlapping absorption range of at least one marker with that of at least one other marker and the number of light sources being less than or equal to the number of markers.The present invention further relates to liquids marked by the method of the invention.

    METHOD FOR MARKING LIQUIDS WITH AT LEAST TWO MARKER SUBSTANCES AND METHOD FOR DETECTING THEM

    公开(公告)号:PL344017A1

    公开(公告)日:2001-09-24

    申请号:PL34401799

    申请日:1999-04-12

    Applicant: BASF AG

    Abstract: The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the absorption range of at least one marker overlaps with the absorption range of at least one other marker.The present invention further relates to a method for detecting markers in liquids marked by the method of the invention, which comprises using light sources which emit radiation in the absorption ranges of said markers and detecting the fluorescent light reemitted by said markers, at least one of said light sources emitting radiation in the overlapping absorption range of at least one marker with that of at least one other marker and the number of light sources being less than or equal to the number of markers.The present invention further relates to liquids marked by the method of the invention.

    23.
    发明专利
    未知

    公开(公告)号:NO20005280D0

    公开(公告)日:2000-10-20

    申请号:NO20005280

    申请日:2000-10-20

    Applicant: BASF AG

    Abstract: The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the absorption range of at least one marker overlaps with the absorption range of at least one other marker.The present invention further relates to a method for detecting markers in liquids marked by the method of the invention, which comprises using light sources which emit radiation in the absorption ranges of said markers and detecting the fluorescent light reemitted by said markers, at least one of said light sources emitting radiation in the overlapping absorption range of at least one marker with that of at least one other marker and the number of light sources being less than or equal to the number of markers.The present invention further relates to liquids marked by the method of the invention.

    USE OF COMPOSITIONS CONTAINING BISAZO COMPOUNDS FOR DETECTING FISSURES

    公开(公告)号:CA2347780A1

    公开(公告)日:2000-06-02

    申请号:CA2347780

    申请日:1999-11-20

    Applicant: BASF AG

    Abstract: The invention relates to the use of compositions which contain as components : A) at least one bisazo compound selected from the group consisting of the compounds of general formula (Ia), and general formula (Ib) wherein R1 is C1 - C8 alkyl, R2 is C2-C8 alkyl, R3, R3' is C2-C21 alkyl, wherein up to four CH2 groups of the carbon chain can be substituted by oxygen in the ether functio n, R4 is hydrogen or may independently of R3 have the meaning of R3, R4' is hydrogen or may independently of R3' have the meaning of R3'; B) at least on e solvent in which component A) is soluble and optionally C) at least one surface-active substance. Said compositions are used as fissure-detection agent for detecting surface fissures or other defects in work pieces to be examined. The invention further relates to compositions containing the above - mentioned components A), B) and C).

    26.
    发明专利
    未知

    公开(公告)号:DE19854677A1

    公开(公告)日:2000-05-31

    申请号:DE19854677

    申请日:1998-11-26

    Applicant: BASF AG

    Abstract: The invention relates to the use of compositions which contain as components: A) at least one bisazo compound selected from the group consisting of the compounds of general formula (Ia), and general formula (Ib) wherein R is C1-C8 alkyl, R is C2-C8 alkyl, R , R is C2-C21 alkyl, wherein up to four CH2 groups of the carbon chain can be substituted by oxygen in the ether function, R is hydrogen or may independently of R have the meaning of R , R is hydrogen or may independently of R have the meaning of R ; B) at least one solvent in which component A) is soluble and optionally C) at least one surface-active substance. Said compositions are used as fissure-detection agent for detecting surface fissures or other defects in work pieces to be examined. The invention further relates to compositions containing the above-mentioned components A), B) and C).

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