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    3.
    发明专利
    未知

    公开(公告)号：PT1036760E

    公开(公告)日：2005-01-31

    申请号：PT00103129

    申请日：2000-02-16

    Applicant: BASF AG

    Inventor： BECKMANN EBERHARD DR ,  KRUEGER RUDOLF DR

    IPC: C01B17/66 ,  C07C313/04

    Abstract: A novel composition (I) contains (A) at least one sulfinic acid derivative (preferably at 15-90 wt. %) and (B) potassium carbonate (preferably at 0.001-10 wt. %).

    Continuous vat dyeing of cellulosic textiles - using single bath contg. dye and reducing agent
    7.
    发明专利
    Continuous vat dyeing of cellulosic textiles - using single bath contg. dye and reducing agent 未知

    公开(公告)号：DE4115452A1

    公开(公告)日：1992-11-12

    申请号：DE4115452

    申请日：1991-05-11

    Applicant: BASF AG

    Inventor： KRUEGER RUDOLF DR ,  NAHR UWE DR ,  SCHLUETER HARALD

    IPC: D06P1/22 ,  D06P3/60

    Abstract: Process is effected by: (a) passing the material through an alkaline aq. bath contg. the dye and a reducing agent, where (i) the reducing agent and/or the bath conditions are selected so that the reducing agent does not significantly react with the dye in the bath, and (ii) the concns. of dye and reducing agent in the bath remain constant as it is entrained by the material; (b) steaming the material at a temp. sufficient to activate the reducing agent; and (c) further treating the material in conventional manner (by rinsing, oxidising and washing). ADVANTAGE - The process eliminates the intermediate drying step used in conventional two-bath processes.

    Dyeing cellulose textile with vat or sulphur dyestuff - using alpha=hydroxy carbonyl cpd. as sole reducing agent by heating side stream to dissolve ppte.
    8.
    发明专利
    Dyeing cellulose textile with vat or sulphur dyestuff - using alpha=hydroxy carbonyl cpd. as sole reducing agent by heating side stream to dissolve ppte. 未知

    公开(公告)号：DE4103639A1

    公开(公告)日：1992-08-13

    申请号：DE4103639

    申请日：1991-02-07

    Applicant: BASF AG

    Inventor： KRUEGER RUDOLF DR ,  SCHNITZER GEORG

    IPC: D06P1/22 ,  D06P1/30 ,  D06P1/651 ,  D06P3/60

    Abstract: Dyeing textile materials of cellulose fibres, opt. mixed with synthetic fibres, with vat or S. dyestuffs (I) is carried out in aq. dyebaths (II) in the presence of alpha-hydroxycarbonyl cpds. (III) as reducing agent for (I) and alkali, followed by fixing of the reduced (I) to the textile by oxidn. and after-treatment. The novel features are that (a) a fraction (IV) comprising up to 10 (wt.)% of the aq. liquor is taken from (II) contg. (I) in the reduced form and pptd. (I); (b) (IV) is heated to a temp. at least 15 deg. C above that of the (II) and kept at this temp. unitl the pptd. (I) present has re-dissolved; and (c) (IV) is cooled to the temp. of (II) and returned to (II). Only (III) is needed as reducing agent, instead of the usual mixt. The depth of colour, fastness to rubbing and brilliance correspond to those obtd. with caustic alkali and hydrosulphite. The process is useful for dyeing natural and regenerated cellulose fibres, e.g. staple rayon or polynosic fibres, and mixts. e.g. with polyesters, polyamides or polyacrylonitrile, pref. in the form of yarn, fabric or ne

    9.
    发明专利
    未知

    公开(公告)号：AT275094T

    公开(公告)日：2004-09-15

    申请号：AT00103129

    申请日：2000-02-16

    Applicant: BASF AG

    Inventor： BECKMANN EBERHARD DR ,  KRUEGER RUDOLF DR

    IPC: C01B17/66 ,  C07C313/04

    Abstract: A novel composition (I) contains (A) at least one sulfinic acid derivative (preferably at 15-90 wt. %) and (B) potassium carbonate (preferably at 0.001-10 wt. %).

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