11.
    发明专利
    未知

    公开(公告)号:DE2311130B1

    公开(公告)日:1974-08-01

    申请号:DE2311130

    申请日:1973-03-07

    Applicant: BASF AG

    Abstract: 1453130 Dyeing natural polyamides BASF AG 6 March 1974 [7 March 1973] 9993/74 Heading D1B Natural polyamide fibres are dyed in brilliant pastel shades with a dye which is absorbed from an acid medium using the padbatch method the impregnation liquor containing up to 7% by weight (based on the fibres to be dyed) of hydrogen peroxide or the equivalent amount of performic acid. Preferably the dwell time is 10 to 24 hours and the dwell temperature is about 20‹C. The hydrogen peroxide may be in the form of an adduct of urea and hydrogen peroxide but is preferably a 30 to 50% aqueous solution. Metal-free acid dyes may be used to dye wool, silk and animal hair.

    17.
    发明专利
    未知

    公开(公告)号:DE2243330A1

    公开(公告)日:1974-03-28

    申请号:DE2243330

    申请日:1972-09-02

    Applicant: BASF AG

    Abstract: Reductive bleaching agents which contain alkali metal sulfites and zinc oxide or soluble zinc salts.

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