FINELY DIVIDED GEL-LIKE CROSSLINKED POLYMERS

    公开(公告)号:AU6414786A

    公开(公告)日:1987-04-30

    申请号:AU6414786

    申请日:1986-10-17

    Applicant: BASF AG

    Abstract: Finely divided, gel-like crosslinked polymers are prepared by a continuous method in which a monomer mixture which contains, per 100 parts by weight of acrylic acid or methacrylic acid, from 50 to 100 mol % of which in each case are neutralized, acrylamide, methacrylamide or N-vinylpyrrolidone, from 0 to 30 parts by weight of other water-soluble monoethylenically unsaturated monomers and from 0 to 20 parts by weight of water-insoluble monoethylenically unsaturated monomers is copolymerized with from 0.01 to 5 parts by weight of a crosslinking agent, in 20-65% strength by weight aqueous solution in the presence of an initiator at from 45 DEG to 95 DEG C. in a single-screw cylindrical mixer whose stirrer shaft possesses disk segments which have, at the outer end, mixing bars which are arranged in a manner such that the substances fed in at the entrance of the mixer are conveyed in the axial direction to the exit of the mixer, the aqueous monomer solution in the mixer is polymerized under from 100 to 800 mbar, and some of the water is removed during the polymerization, so that a crumb-like gel having a solids content of from 30 to 70% by weight is discharged.

    FTALOCIANINAS SUSTITUIDAS CON ARILO O ALQUILOXI COMO MARCADORES DE LIQUIDOS

    公开(公告)号:PE20071287A1

    公开(公告)日:2008-02-11

    申请号:PE2007000279

    申请日:2007-03-14

    Applicant: BASF AG

    Abstract: DE FORMULA (I) DONDE: M ES DOS VECES H, DOS VECES Li, Mg, Zn, Cu, Ni, VO, TiO, AlCl, AlOCOCH3, AlOCOCF3, SiCl2 o Si(OH)2; m ES 1, 2, 3 o 4; n Y r SON IGUALES O DIFERENTES A 0, 1, 2, 3 o 4; m+r ES 1, 2, 3 o 4; n+r ES 0, 1, 2, 3 o 4; R ES CUALQUIERA DE LOS 7 COMPUESTOS DE FORMULA (II), DONDE: R1 ES IGUAL O DIFERENTE A H, HALOGENO o R2; R2 ES IGUAL O DIFERENTE A ALQULO C1-C18, CICLOALQUILO C4-C8, ALQUENILO C2-C12, ARILO C6-C10, ARALQUILO C7-C20 o ALQUINILO C2-C12, ESTANDO LOS RADICALES ARILO SUSTITUIDOS O NO CON AL MENOS UNO DE HALOGENO, CIANO, NITRO, HIDROXILO, AMINO, ALQUILO C1-C20 OPCIONALMENTE INTERRUMPIDO POR 1 A 4 ATOMOS DE OXIGENO EN FUNCION ETER, ALCOXI C1-C20, ALQUIL C1-C20-AMINO O DIALQUIL C1-C20-AMINO; R3 ES IGUAL O DIFERENTE A R1, O DOS RADICALES R3 O UN RADICAL R1 Y UN RADICAL R3 FORMAN JUNTOS OTRO SISTEMA DE ANILLOS; R4, R5 Y R6 SON IGUALES O DIFERENTES A H, HALOGENO, CH3 o C2H5; Y1, Y2, Y3, Y4, Y5, Y6 SON IGUALES O DIFERENTES A ALQUILENO (C1-C4) SUSTITUIDO O NO CON UNO O MAS ATOMOS DE HALOGENO; s ES 0, 1, 2, 3, 4, 5 o 6; Y, t ES 0, 1, 2 o 3. EL LIQUIDO ES UN ACEITE MINERAL. UNA CANTIDAD SUFICIENTE DE DICHAS FTALOCIANINAS SE EMPLEA PARA IDENTIFICAR LIQUIDOS AL INDUCIR FLUORESCENCIA DETECTABLE CON IRRADIACION CON UNA LONGITUD DE ONDA ENTRE 600 Y 800 nm, DETECTANDOSE LA RADIACION CON UN DISPOSITIVO QUE LA DETECTA EN LA REGION DE LONGITUD DE ONDA LARGA VISIBLE O EN LA REGION INFRARRO CERCANA

    METHOD FOR MARKING HYDROCARBONS AND HYDROCARBON MIXTURES WITH AT LEAST TWO MARKER SUBSTANCES AND METHOD FOR DETECTING THEM

    公开(公告)号:BG65287B1

    公开(公告)日:2007-11-30

    申请号:BG10495100

    申请日:2000-11-15

    Applicant: BASF AG

    Abstract: The method for marking hydrocarbons and hydrocarbon mixtures with at least two marker substances consists in that the marker substances are absorbent in the spectral range of 600 to 1200 nm and emit fluorescence radiation. The absorption range of at least one marker substance overlaps the absorption range of at least one other marker substance. The invention relates also to a method for detecting marker substances and liquids, using radiation sources which emit in the absorption ranges of such substances the fluorescence radiation emitted by the marker substances. At least one of the radiation sources emits radiation in the overlapping absorption range of at least one marker substance with at least one other marker substance, and the number of radiation sources is smaller than or the same as the number of the marker substances. The invention relates also to liquids marked according to the inventive method.

    METODO PARA DETERMINAR LA IDENTIDAD O NO IDENTIDAD Y LA CONCENTRACION DE UN COMPUESTO QUIMICO EN UN MEDIO

    公开(公告)号:PE09362007A1

    公开(公告)日:2007-09-21

    申请号:PE0017122006

    申请日:2006-12-28

    Applicant: BASF AG

    Abstract: QUE COMPRENDE: a)ETAPA DE VERIFICACION PARA DETERMINAR SI UN COMPUESTO V ESTA CONTENIDO EN EL MEDIO, QUE INCLUYE: a1)EXPONER EL MEDIO A UNA 1ERA RADIACION DE ANALISIS CON UNA LONGITUD DE ONDA L VARIABLE QUE ASUME AL MENOS 2 VALORES DIFERENTES; a2)GENERAR AL MENOS UNA FUNCION DE RESPUESTA ESPECTRAL A(L) CON AYUDA DE LA RADIACION ABSORBIDA Y/O EMITIDA Y/O REFLEJADA Y/O DISPERSADA POR EL MEDIO EN RESPUESTA A LA 1ERA RADIACION; a3)FORMAR AL MENOS UNA FUNCION DE CORRELACION ESPECTRAL K(dL) POR COMPARACION ESPECTRAL DE LA FUNCION DE RESPUESTA CON AL MENOS UNA FUNCION MODELO R(L+dL), DONDE LA FUNCION DE PATRON R(L) REPRESENTA UNA FUNCION DE MEDICION ESPECTRAL DE UN MEDIO QUE CONTIENE EL COMPUESTO QUIMICO V Y dL ES UNA VARIACION COORDINADA; Y, a4)EXAMINAR LA FUNCION DE CORRELACION EN UNA ETAPA DE RECONOCIMIENTO DE MODELO, Y CONCLUIR SOBRE SI EL COMPUESTO QUIMICO V ESTA CONTENIDO EN EL MEDIO; Y, b)ETAPA DE ANALISIS, PARA DETERMINAR UNA CONCENTRACION c DEL COMPUESTO, QUE INCLUYE: b1)EXPONER EL MEDIO A UNA 2DA RADIACION DE ANALISIS QUE TIENE AL MENOS UNA LONGITUD DE ONDA DE EXCITACION LEX; Y, b2)GENERAR AL MENOS UNA FUNCION DE ANALISIS ESPECTRAL B(LEX,LRES) CON AYUDA DE LA RADIACION DE LA LONGITUD DE ONDA DE RESPUESTA LRES ABSORBIDA Y/O EMITIDA Y/O REFLEJADA Y/O DISPERSADA POR EL MEDIO EN RESPUESTA A LA 2DA RADIACION, Y DEDUCIR LA CONCENTRACION c. K(dL) ES (1) o (3), N ES (2), N* ES (4), c ES (5) o (6), B(t,LEX,LRES) ES (7) DONDE t ES UNA CONSTANTE DE TIEMPO Y K1 Y K2 SON CONSTANTES

    Procedure for the confirmation of the presence of a chemical compound contained in a medium for identification of a mineral oil, comprises determining the chemical compound contained in the medium by verification step

    公开(公告)号:DE102005062910A1

    公开(公告)日:2007-07-05

    申请号:DE102005062910

    申请日:2005-12-29

    Applicant: BASF AG

    Abstract: The procedure for the confirmation of the presence of a chemical compound contained in a medium (312) for identification of a mineral oil and/or for the examination of the authenticity of a commodity, comprises determining the chemical compound contained in the medium by verification step and determining the concentration of the chemical compound by analysis step. The verification step comprises exposing the medium to a first analysis radiation (316) of a variable wavelength, which assumes two different values, and generating a spectral response function. The procedure for the confirmation of the presence of a chemical compound contained in a medium (312) for identification of a mineral oil and/or for the examination of the authenticity of a commodity, comprises determining the chemical compound contained in the medium by verification step and determining the concentration of the chemical compound by analysis step. The verification step comprises exposing the medium to a first analysis radiation (316) of a variable wavelength, which assumes two different values, generating a spectral response function such as a transmission function and an emission function on the basis of the radiation and forming a spectral correlation function by spectral comparison of the spectral response function with a sample function. The analysis step comprises exposing the medium to the second analysis radiation with an excitation wavelength and generating a spectral analysis function on the basis of the radiation of the response wavelength that is absorbed and/or emitted and/or reflected and/or scattered from the medium as response to the first and second analysis radiations of the wavelength. The sample function represents a spectral measuring function of the medium. The spectral correlation function is a coordinate shift. In a sample recognition step, the spectral correlation function is examined and concluded whether the chemical compound is contained in the medium. The analysis step is accomplished only if it is confirmed in the verification step. The spectral correlation function is formed from the spectral response functions and the sample functions. In the spectral response function-generating step, a raw response function is determined and subsequently transformed as follows into the spectral response function. A wavelength shift is empirically determined by a spectral response function of the medium containing the compound, which is compared with a spectral response function of the reference medium and/or with a reference response function. The spectral response medium is formed from a spectral shift. The spectral correlation function is formed by the comparison of the spectral response function of the compound in another medium and/or with a standard response function. The wavelength shift is determined from a shift of a maximum of a maximum of the spectral correlation function. A spectral background function is empirically determined by a spectral response function of the medium containing the compound that is compared with a spectral response function of the medium not containing the compound and/or with a reference response function. A spectral background function is determined from a deviation in such a manner that a first spectral correlation function is formed by a spectral comparison of the spectral response function with the sample function in accordance with the spectral response function generation step, which is adapted to a second spectral correlation function formed by a spectral self-comparison of the sample function. The emission function and spectral analysis function exhibit a fluorescence function. The spectral background function and/or the wavelength shift are taken from a database, which is sorted according to the media. The excitation wavelength of the second analysis radiation assumes two different values. The spectral analysis function is determined integrally over a wavelength range of the response wavelength, in which the excitation wavelength is not contained in this wavelength range. A lock-in procedure is used in the analysis step, in which a second analysis radiation of the excitation wavelength is periodically modulated with a frequency. The spectral analysis function is determined integrally over a wavelength range of a response wavelength in a time-solved manner. An independent claim is included for a device for confirmation of the presence of a chemical compound contained in a medium.

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