Lessening pigment migration
    12.
    发明专利

    公开(公告)号:GB1080237A

    公开(公告)日:1967-08-23

    申请号:GB5025664

    申请日:1964-12-10

    Applicant: BASF AG

    Abstract: Pigment dyeing fibres of cotton, viscose, wool, silk, cellulose acetate, polyamide, polyester, polyacrylonitrile, asbestos and glass is effected by applying a liquor containing a pigment, a binder, polyvinylcaprolactam or a copolymer thereof both of which polymers being soluble in the dye liquor and, optionally, dyeing auxiliaries and drying the material thus treated. Specified comonomers are vinylimidazole, vinyl pyrrolidone, methacrylamide, acrylic acid, ethyl acrylate and vinyl acetate. The binder may be any known cross-linkable copolymers, e.g. as aqueous dispersions, or curable precondensates (many listed). Specified auxiliaries are plasticisers, emulsifiers, thickeners, protective colloids, fillers as well as acid or alkaline catalysts. The dye liquors may be applied by padding, the fibres may then be dried at 50-100 DEG C. and cured at 100-200 DEG C. Examples are given.

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