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    Oil-soluble phenylazoaniline dyes
    73.
    发明专利
    Oil-soluble phenylazoaniline dyes 未知

    公开(公告)号：IE920555A1

    公开(公告)日：1992-08-26

    申请号：IE920555

    申请日：1992-02-21

    Applicant: BASF AG

    Inventor： REICHELT HELMUT ,  VAMVAKARIS CHRISTOS ,  ZEIDLER GEORG

    IPC: C09B29/08 ,  C10L1/00 ,  C10L1/22 ,  C09B29/085 ,  C10L1/226 ,  C10L10/12

    Abstract: Azo dyes of the formula in which R and R are each hydrogen, C1-C4-alkyl or C1-C4-alkoxy, R is hydrogen or C1-C8-alkyl which is optionally substituted by hydroxyl and can be interrupted by 1 to 3 oxygen atoms, R is C1-C8-alkyl which is optionally substituted by hydroxyl and can be interrupted by 1 to 3 oxygen atoms, and X is cyano or optionally substituted C1-C8-alkoxycarbonyl, with the proviso that at least one hydroxyalkyl radical is present in the molecule, mineral oils containing one or more of the novel dyes, and the use of the novel dyes for labelling mineral oils.

    PREPARATION OF A BEAD POLYMER
    76.
    发明专利
    PREPARATION OF A BEAD POLYMER 未知

    公开(公告)号：AU591269B2

    公开(公告)日：1989-11-30

    申请号：AU7174087

    申请日：1987-04-16

    Applicant: BASF AG

    Inventor： HEIDE WILFRIED ,  HARTMANN HEINRICH ,  VAMVAKARIS CHRISTOS

    IPC: C08F2/32 ,  C08F20/56 ,  C08F20/06 ,  C08F20/18 ,  C08F20/44

    Abstract: Bead polymers are prepared by reverse suspension polymerization by a process in which an aqueous solution of water-soluble ethylenically unsaturated monomers are polymerized in an aliphatic hydrocarbon using an inorganic suspending agent based on a modified finely divided mineral and, in addition, from 0.1 to 5% by weight, based on the monomers used, of a nonionic surfactant, in the presence of a polymerization initiator, with the formation of a water-in-oil polymer suspension.

    78.
    发明专利
    未知

    公开(公告)号：BRPI0513585A

    公开(公告)日：2008-05-13

    申请号：BRPI0513585

    申请日：2005-07-19

    Applicant: BASF AG

    Inventor： SENS RUEDIGER ,  VAMVAKARIS CHRISTOS ,  EBERT SOPHIA ,  THIEL ERWIN

    IPC: G01N33/28 ,  G01N21/35

    Abstract: The present invention relates to a method for determining the identity or non-identity of at least one chemical compound V' homogeneous y distributed in a medium, by a) exposing the medium containing at least one homogeneously distributed chemical compound V' to analysis radiation with a variable wavelength lambda, and b) determining the spectral measurement function I'(lambda) with the aid of the absorbed, reflected, emitted and/or scattered radiation, wherein a correlation function K(deltalambda,c',c) is determined according to Equation I K ⁡ ( delta ⁢ ⁢ lambda , c ' , c ) = 1 / N . ∫ - ∞ + ∞ ⁢ I ' ⁡ ( lambda , c ' ) . I ⁡ ( lambda + delta ⁢ ⁢ lambda , c ) ⁢ ⁢ ⅆ lambda ( I ) in which K(deltalambda,c',c) denotes the correlation depending on the relative shift deltalambda of the functions I'(lambda,c') and I(lambda,c) and the concentrations c' and c of the at least one chemical compound V' and V, c' denotes the concentration of the at least one chemical compound V' homogeneously distributed in the medium, with a known or suspected identity, c denotes the concentration of the at least one chemical compound V homogeneously distributed in the medium, with a known identity, I'(lambda,c') denotes the measurement function of the at least one homogeneously distributed chemical compound V' in a medium containing the concentration c', I(lambda,c) denotes the comparison function of the at least one homogeneously distributed chemical compound V in a medium containing the concentration c, and N denotes a normalization factor and identity or non-identity between the compounds V and V' is determined with the aid of the correlation function K(deltalambda,c',c).

    79.
    发明专利
    未知

    公开(公告)号：DE59914509D1

    公开(公告)日：2007-10-31

    申请号：DE59914509

    申请日：1999-04-12

    Applicant: BASF AG

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

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

    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.

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