2.
    发明专利
    未知

    公开(公告)号:DE1900349A1

    公开(公告)日:1970-08-06

    申请号:DE1900349

    申请日:1969-01-04

    Applicant: BASF AG

    Abstract: 1286741 Optical brighteners. BADISCHE ANILIN & SODA FABRIK AG 2 Jan 1970 [4 Jan 1969] 208/70 Heading D1P [Also in Division C2] Optical brighteners for synthetic and natural polyamides, cellulose esters and acrylonitrile polymer textile materials comprise pyrazolines of the formula in which R is hydrogen, Cl, Br, methyl, methoxy, ethoxy, acetylamino, methyl sulphonylamino or acetoxy, R' is hydrogen, Cl, Br, methyl, ethyl, -COOH or ester or amide thereof, CN, SO 3 H or ester or amide thereof or sulphonyl, R 2 is hydrogen, methyl or a carboxylic ester or amide, R 3 is hydrogen or methyl, Y is hydrogen or Cl and X is hydroxy, alkoxy, aralkoxy, aryloxy, amino or substituted amino group. Specified substrates are wool, silk, nylon, cellulose acetate and triacetate. Example 86 describes the brightening of an acrylonitrile polymer cloth in an aqueous bath.

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