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    PROCESS FOR THE PURIFICATION OF CRUDE ORGANIC PIGMENTS
    11.
    发明专利
    PROCESS FOR THE PURIFICATION OF CRUDE ORGANIC PIGMENTS 未知

    公开(公告)号：DE3275735D1

    公开(公告)日：1987-04-23

    申请号：DE3275735

    申请日：1982-04-08

    Applicant: BASF AG

    Inventor： FABIAN WOLFGANG DR ,  POLSTER RUDOLF DR

    IPC: C09B67/10 ,  C09B67/54

    Abstract: A process for purifying crude organic pigments, wherein the crude pigment is suspended in a mixture of two organic liquids which are partially or completely immiscible with one another, the suspension is mixed at 50 DEG -180 DEG C. until equilibrium has been reached, the phases are allowed to separate, the phase containing the impurities (i.e. the first liquid) is separated off and the purified pigment is isolated from the other phase (i.e. the second liquid). Finely divided crude pigments can, directly after purification, be converted, while in the second liquid, into pigmentary forms. The process gives pigments of high purity, which after conversion into pigmentary forms give deep, brilliant colorations.

    18.
    发明专利
    未知

    公开(公告)号：CH622545A5

    公开(公告)日：1981-04-15

    申请号：CH1507576

    申请日：1976-11-30

    Applicant: BASF AG

    Inventor： KRANZ JOACHIM DR ,  JETTMAR WERNER DR ,  POLSTER RUDOLF DR

    IPC: C09B67/20 ,  C09B47/12 ,  C09B47/26 ,  C09B67/22 ,  C09B67/12

    Abstract: A process for converting crude copper phthalocyanine to a pigmentary form, wherein finely divided and heavily agglomerated crude copper phthalocyanine which exhibits disturbed crystallization and which has a primary particle size of less than 0.1 mu um is introduced into an organic or aqueous organic medium together with from 0.5 to 7% by weight, based on the crude copper phthalocyanine, of a basic copper phthalocyanine of the formula (I) or (II) or of mixtures thereof (where CuPc is an n-valent copper phthalocyanine radical, R1 is H or alkyl of 1 to 4 carbon atoms, A is linear or branched alkylene, R2 is alkyl of 1 to 20 carbon atoms, alkoxyalkyl of 3 to 12 carbon atoms or cycloalkyl of 6 to 8 carbon atoms, R3 is H, alkyl of 1 to 4 carbon atoms or cycloalkyl of 6 to 8 carbon atoms or is a saturated heterocyclic 5-membered, 6-membered or 7-membered ring, and n is an integer from 1 to 6), and the suspension is heated at from room temperature to 180 DEG C until the pigment exhibits optimum tinctorial strength. Pigments of high tinctorial strength, which give colorations having a pure hue, are obtained.

    19.
    发明专利
    未知

    公开(公告)号：DE2132546A1

    公开(公告)日：1973-01-18

    申请号：DE2132546

    申请日：1971-06-30

    Applicant: BASF AG

    Inventor： SCHREMPP KLAUS DR ,  JETTMAR WERNER DR ,  POLSTER RUDOLF DR ,  HARTMANN EDUARD

    IPC: C09B67/00

    Abstract: A method for the production of high tinctorial strength pigment pastes for printing inks or paints from finely ground crude pigments. Printing inks and varnish paints prepared from the pigment paste exhibit not only high tinting strength but also a particularly high brilliance.

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