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    Improvements in the washproof and boilproof fixation on textiles of cellulose of compounds capable of forming azo dyestuffs
    41.
    发明专利
    Improvements in the washproof and boilproof fixation on textiles of cellulose of compounds capable of forming azo dyestuffs 未知

    公开(公告)号：GB848776A

    公开(公告)日：1960-09-21

    申请号：GB2559

    申请日：1959-01-01

    Applicant: BASF AG

    Inventor： ROHLAND WERNER ,  MESCH WALTER ,  EISELE JULIUS ,  FEDERKIEL WILHELM

    Abstract: In the formation of azo dyestuffs on cellulose fibres, the coupling component or the diazotisable amine is first fixed on the fibre in a washproof condition by treating the fibre, in the presence of an acid-binding agent, with a compound of the formula: wherein R represents a hydrogen atom, an alkyl, aryl, aralkyl, cycloalkyl, halogenoalkyl, hydroxyalkyl or acyl group or a second radical -D-O-E, D represents a linear or branched-chain alkylene radical which may carry halogen atoms and/or further non-esterified hydroxyl groups, E represents an -SO3 radical, an -SO2-alkyl radical or an -SO2-aryl radical and A represents the residue of a coupling component or the residue of an aromatic or heterocyclic compound having a diazotisable amino group. Numerous compounds of the above formula are specified, and when the compound contains the residue of a diazotisable amine, the amine group may first be protected by acylation, the amine then being fixed on the fibre and subsequently treated with alkali to effect deacylation prior to diazotisation. Specified acid-binding agents, which may be applied before, together with or after the compound, are sodium and potassium hydroxides, carbonates, bicarbonates and acetates. Fixation may be effected at 40 DEG -200 DEG C., by heating or steaming. The process is applicable to dyeing and printing techniques.

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