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    New monoazo dyestuffs and the production of the same
    1.
    发明专利
    New monoazo dyestuffs and the production of the same 未知

    公开(公告)号：GB877678A

    公开(公告)日：1961-09-20

    申请号：GB148159

    申请日：1959-01-15

    Applicant: BASF AG

    Inventor： ROHLAND WERNER ,  STOECKL ERICH

    IPC: C09B62/527

    Abstract: The invention comprises dyes of formula:- X-(NHSO2-A-SO2NH-D-Z)n where X is an n valent radical of a monoazo dye, A is an arylene radical which may be substituted, D is an alkylene radical, preferably of 2-4 C atoms, Z is Hlg and n 1 or 2. The dyes are made by treating an arylsulphonic acid halogenalkylamide sulphonic acid halide with a monoazo dye containing at least one primary amino group or from appropriate diazo and coupling components. Indicated arylsulphonic acid halogen alkylamide sulphonic acid halides are those derived from benzene-, diphenyl- or naphthalenedisulphonic acids and they may contain substituents in the aryl residue such as alkyl, aryl, aralkyl, hydroxyalkyl, alkoxy, aroxy, sulphonic acid, sulphonamide, sulphon-halogenalkylamide, sulphon-hydroxyalkylamide, nitro and halogen groups. Specified diazo components include 1, 3-diaminobenzene- 4-sulphonic acid and 1, 4-diaminobenzene and its 3-nitro derivative. Indicated coupling components are aminophenols, di- and poly-aminobenzenes, aminonaphthols, di- and poly-aminonaphthalenes, and aminophenylmethyl-pyrazolones and their sulphonic acids, sulphonamides and sulphones. The dyes dye and print materials such as wool, silk and linear polyamides but are especially of use for natural or regenerated cellulose in the presence of an acid-binding agent. Numerous examples are provided of the preparation of the dyes and their use in colouring cotton in red and yellow shades and 1-naphthylamine- 5-sulphonic acid is amongst the diazo components used. Specification 868,745 is referred to.

    Production of low-viscosity dye pastes
    6.
    发明专利
    Production of low-viscosity dye pastes 未知

    公开(公告)号：GB973851A

    公开(公告)日：1964-10-28

    申请号：GB3148663

    申请日：1963-08-09

    Applicant: BASF AG

    Inventor： DAUBACH EWALD ,  STOECKL ERICH

    IPC: C09B67/00 ,  C09B67/10

    Abstract: Pastes of water-insoluble dyestuffs having low viscosity are prepared by a process wherein the pressed product of the dye is heated to temperatures of 80-100 DEG C. whilst stirring at atmospheric pressure or to temperatures of 100-200 DEG C. whilst stirring at superatmospheric pressure, followed by a conventional milling process. A dispersing agent may be added to the pressed product before heating or after heating. The pressed product is a p water-containing cake of dyestuff obtained from the filter press after the dye manufacture or a purification process. Dyes referred to are vat and dispersed dyes and figments. Specification 496,652 is referred to.

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