Water-soluble dyestuffs of the azaporphin series and their production

    公开(公告)号:GB848782A

    公开(公告)日:1960-09-21

    申请号:GB764159

    申请日:1959-03-05

    Applicant: BASF AG

    Inventor: TARTTER ARNOLD

    Abstract: Water-soluble azaporphin dyestuffs are made by treating an azaporphin containing one or more hydroxyalkylaminomethyl groups or a mixture of such azaporphins at a temperature between -10 DEG C. and +60 DEG C. with a sulphating agent. Sulphating agents specified are concentrated sulphuric acid, sulphuric acid monohydrate, up to 65% oleum and chlorsulphonic acid. The dyestuffs dye, pad or print cellulose materials in conjunction with alkaline and thermal treatments.

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