2.
    发明专利
    未知

    公开(公告)号:DE3864618D1

    公开(公告)日:1991-10-10

    申请号:DE3864618

    申请日:1988-07-19

    Applicant: BASF AG

    Abstract: In the prodn. of thin films with a definite concn. of dyestuff/unit area, the novel features are than an oleophilic dyestuff (I), which is soluble in organic, water-immiscible solvent, and an organic polymer (II) are dissolved in an organic, water-immiscible solvent (III); spread at a water/air interface; and transferred to a solid substrate (IV) by the Langmuir-Blodgett technique after evaporating (III). (I) is pref. insol. in water and contains no structures which become aligned at the water/air interface. (II) can be polyglutamates with long-chain substits. in the gamma-position; or (co)polymers or polycondensates with lateral long-chain n-alkyl gps., opt. partly replaced by shorter n-alkyl gps., branched alkyl gps. of the same length or shorter and/or gps. with C-C multiple bond(s) of the same length or shorter, attached to the main polymer chain through polar gps., pref. -O-, -CO-, -CO-O- or -CO-NH-.

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