35.
    发明专利
    未知

    公开(公告)号:DE1802863B1

    公开(公告)日:1970-07-30

    申请号:DE1802863

    申请日:1968-10-12

    Applicant: BASF AG

    Abstract: 1275778 Dyeing polyamides BADISCHEANILIN- & SODA-FABRIK AG 10 Oct 1969 [12 Oct 1968] 49775/69 Heading D1B [Also in Division C4] Natural and synthetic polyamide materials are dyed with dyes of formula I in which R is a hydrogen atom or an alkyl group of 1 to 4 carbon atoms which may be substituted by alkoxy, chloro, bromo, carboxyl, amido, carbalkoxy or acetoxy group, or a cyclohexyl group, benzyl group or phenylethyl group, R 1 is a hydrogen atom or alkyl group of 1 to 4 carbon atoms which may be substituted by alkoxy, chloro, bromo, carboxyl, carbalkoxy, amido or acetoxy group, or R and R 1 together with the nitrogen atom denote the radical of a five- or six-membered heterocyclic ring, R 2 is a hydrogen atom or a methyl, or ethyl group, and R 3 is a hydrogen, chlorine or bromine atom or a methyl, ethyl, methoxy or ethoxy group. The dyes may be employed in the form of alkali metal or ammonium salts and give greenish yellow fluorescent dyeings on nylon 6 and nylon 66.

    Azo dyestuffs esterified with sulphuric acid

    公开(公告)号:DE1802864A1

    公开(公告)日:1970-07-23

    申请号:DE1802864

    申请日:1968-10-12

    Applicant: BASF AG

    Abstract: Azo dyestuffs which dye natural or synthetic fibres particularly nylon-6 and 6,6 yellow to red shades of excellent light and wet-handling fastness have general formula (where A is a 1-6 C alkylene group or a phenylene group, and B is the radical from a compound of the hydroxynaphthalene, aminonaphthalene, aminopyrazole or indole series). The compounds are prepared by either esterification of the corresponding hydroxyl compound with sulphuric acid or by coupling the diazo derivative of the sulphuric ester amine with the compound B.

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