35.
    发明专利
    未知

    公开(公告)号:DE3911475A1

    公开(公告)日:1990-10-11

    申请号:DE3911475

    申请日:1989-04-08

    Applicant: BASF AG

    Abstract: The invention relates to a blocking film, in particular hot blocking film, consisting of a carrier film and a transfer layer which can be removed therefrom and which has at least one magnetic layer of a dispersion of magnetisable particles based on chromium dioxide and/or iron oxide, and which may carry, on the side facing away from the carrier film, an adhesive layer which serves for fixing the transfer layer to a substrate.

    36.
    发明专利
    未知

    公开(公告)号:DE3842176A1

    公开(公告)日:1990-06-21

    申请号:DE3842176

    申请日:1988-12-15

    Applicant: BASF AG

    Abstract: The invention relates to a transfer film with a magnetic layer, consisting essentially of a carrier film, a separating layer and a transfer layer detachable therefrom and formed from at least one magnetic layer, it being the case after the detachment of the carrier film the surface-forming layer on the side of the magnetic layer pointing towards the carrier film consists of a cover layer, containing inorganic pigments in a cross-linked polymer matrix, in a thickness of 0.2 to 5.0 mu m with a surface resistance of 10 to 10 ohm/cm.

    37.
    发明专利
    未知

    公开(公告)号:DE3668250D1

    公开(公告)日:1990-02-15

    申请号:DE3668250

    申请日:1986-07-11

    Applicant: BASF AG

    Abstract: Magnetic recording media are produced by dispersing pulverulent magnetic material in a mixture of a solvent, an organic polymer binder, a dispersant and other conventional additives, with the aid of a conventional dispersing apparatus and using a particular ceramic grinding medium, applying the resulting dispersion in the form of a layer on a base and then compacting the layer.

    40.
    发明专利
    未知

    公开(公告)号:DE3427682A1

    公开(公告)日:1986-02-06

    申请号:DE3427682

    申请日:1984-07-27

    Applicant: BASF AG

    Abstract: Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.

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