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    2.
    发明专利
    未知

    公开(公告)号：BR7908405A

    公开(公告)日：1980-07-29

    申请号：BR7908405

    申请日：1979-12-20

    Applicant: BASF AG

    Inventor： LACH D ,  FEICHTMAYR F ,  STREICHER R

    IPC: D06P1/41 ,  D06P1/60 ,  D06P3/32 ,  D06P1/645

    Abstract: A process for dyeing grain leather with anionic dyes under the conventional conditions for exhaustion methods, in the presence of two specific surfactants. The combined use of the two surfactants results, in the case of cationically tanned (essentially mineral-tanned) leather, in an improvement in the levelness and dye penetration and in the case of anionically tanned (synthetics-tanned or vegetable-tanned) or retanned leather, in an increase in depth of the color. The two surfactants are (a) an aliphatic alcohol of 9 to 24 carbon atoms oxyethylated with from 3 to 120 ethylene oxide units and (b) an aliphatic amine of 8 to 20 carbon atoms oxyethylated with from 6 to 80 ethylene oxide units, and they are used in a weight ratio of a:b of from 1:4 to 4:1 and in a total amount of from 0.3 to 3%, based on shaved weight.

    3.
    发明专利
    未知

    公开(公告)号：DK123882A

    公开(公告)日：1982-09-21

    申请号：DK123882

    申请日：1982-03-19

    Applicant: BASF AG

    Inventor： ECKELL A ,  EILINGSFELD H ,  ELZER A ,  FEICHTMAYR F ,  LEYRER R J ,  NEUMANN P

    IPC: G03G5/00 ,  C07D209/44 ,  G03G5/06 ,  G03G

    Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the general formula I I where R1, R2, R3 and R4 are each hydrogen or a non-ionic substituent, X and Y are each the radical of a methylene-active compound, or of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, and Z is hydrogen, methyl or phenyl, and the production of this recording medium.

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