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    Continuous dyeing of cotton warp with indigo, vat or sulphur dyestuff or mixt. - in rope or slasher appts., with partial drying in absence of air before oxidn. in fresh air to enhanced build-up in layers
    1.
    发明专利
    Continuous dyeing of cotton warp with indigo, vat or sulphur dyestuff or mixt. - in rope or slasher appts., with partial drying in absence of air before oxidn. in fresh air to enhanced build-up in layers 未知

    公开(公告)号：DE4227507A1

    公开(公告)日：1994-02-24

    申请号：DE4227507

    申请日：1992-08-20

    Applicant: BASF AG

    Inventor： SUETSCH FRANZ ,  RUETTIGER WILHELM DR

    IPC: D06B21/00 ,  D06P1/22 ,  D06P1/30 ,  D06P3/60

    Abstract: In continuous dyeing of cotton warp yarn (I) with indigo and/or vat or sulphur dyestuff's in the presence of alkali and usual reducing agent (II) in rope or slasher appts., (I) impregnated with dyebath is partly dried in the absence of air, then oxidn. is carried out by admitting fresh air, with further drying and cooling. Pref. the total pick-up is 50-100% w.r.t. dry (I). The amt. of water removed in partial drying is at least 10, pref. at least 30% w.r.t. dry (I). Partial drying is carried out in steam for 2-20 ss, then the amt. and/or temp. of the fresh air is adjusted so that it near or pref. above the dew point. After the last impregnation and partial drying, oxidn. is carried out with H2O2 in the rinsing bath(s) instead of with fresh air. the amt. of (II) used is 1.3-1.9 times the theoretical amt. ADVANTAGE - The dyeing is improved considerably, since the dyestuff is built up in layers by impregnating partly dried (I) from a very small vol. of dyebath (addn. impregnation) and partly dried (migration) before oxidn. There is no risk of the dyebath overflowing. The vol. of bath lost when changed in 100 times smaller than usual and yarn loss and damage are reduced. The amt. of conc. dyebath needing regeneration by ultrafiltration is reduced, whilst the plant is smaller. (II) consumption is reduced, which compensates for the cost of energy for partial drying and also reduced environmental pollution. The need for separate predyeing for coloured resin (e.g. with orange for black denim) is eliminated and any hue can be produced by adding other vat dyestuffs to the indigo.

    2.
    发明专利
    未知

    公开(公告)号：AT271376B

    公开(公告)日：1969-05-27

    申请号：AT1090866

    申请日：1966-11-25

    Applicant: BASF AG

    Inventor： BILLE HEINZ DR ,  RUETTIGER WILHELM DR

    IPC: D06M15/423

    Abstract: 1,141,515. Mixed aminoplast textile treating compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 25 Nov., 1966 [27 Nov., 1965; 8 June, 1966], No. 52871/66. Heading C3R. [Also in Division D1] A composition suitable for use in the treatment of cellulosic fabrics comprises (a) at least one poly-N-methylol compound which condenses at a temperature less than 140‹ C., (b) at least one poly-N-methylol compound which condenses at a temperature of at least 140‹ C. and (c) at least one acid curing catalyst which forms an acid under the conditions of condensation. The poly-N-methylol compounds contain two or more hydroxymethyl or alkoxymethyl groups having 1-5 carbon atoms in the alkoxy group which are attached to nitrogen. The compounds (a) may have the formula in which each R 1 is a hydrogen atom or when taken together the two substituents R 1 denote and the substituents R 2 which may be the same or different are hydrogen atoms or alkyl groups having 1-4 carbon atoms and the compounds (b) may have the formula or in which R 3 is a hydrogen atom or alkyl group having 1-4 carbon atoms, R 4 is R 5 is a hydrogen atom, an alkyl group having 1-4 carbon atoms or a group of the formula R 3 O-CH 2 -, R 6 is an alkylene group having 2-4 carbon atoms, R 7 is methyl or ethyl and n is 0 or 1, the compounds containing at least two R 3 O-CH 2 - groups. The acid curing catalyst may be aluminium sulphate, zinc chloride, zinc nitrate, ammonium chloride, ammonium nitrate, ammonium phosphate and salts of ethanolamine, diethanolamine, 2- hydroxy - 2 - methylpropylamine with hydrochloric acid, magnesium chloride and magnesium sulphate. The compounds (a), (b) and (c) may be applied to the fabrics from an aqueous bath which may also contain wetting agents, e.g. salts of alkylnaphthalene sulphonic acids, alkali metal salts of sulphonated dioctyl succinate and adducts of alkylene oxides with fatty alcohols, alkyl phenols or fatty amines, water repelling agents, e.g. paraffin wax emulsions containing aluminium or zirconium, silicon containing formulations and perfluorinated aliphatic compounds, softeners, e.g. ethenoxylation products of high molecular weight fatty acids, fatty alcohols or fatty amides, high molecular weight polyglycol ethers and esters thereof, high molecular weight fatty acids, fatty alcohol sulphonates, stearyl-N,N-ethyleneurea and stearylamidomethyl pyridimium chloride, finishes, e.g. cellulose ethers and esters, alginates, polyamides, ether-oxylated polyamides, polyvinyl ethers, polyvinyl alcohol, polyacrylic or methacrylic acid or esters or amides thereof, polyvinyl propionate, polyvinyl pyrrolidone, copolymers of vinyl chloride and acrylic esters, butadiene and styrene or acrylonitrile, α-dichloroethylene, #-chloroalkyl acrylic esters or vinyl-#-chloroethyl ether and acrylamide or amides of crotonic or maleic acid, or N-methylolmethacrylamide and other polymerizable compounds, or polyethylene, and optical brighteners. In examples the aminoplast mixtures are: dimethylol ethyleneurea plus (1) dimethylol glyoxal monoureine or (2) dimethylol ethyl - urethane or (4) dimethylol urea and dimethylol glyoxal monoureine; or (3) dimethylol propyleneurea plus dimethylol 4-methoxy-5: 5- dimethylpropyleneurea; or (5) dimethylol glyoxal monoureine plus dimethylol 5-isobutyl hexahydro - 1: 3: 5 - triazinone - 2. These are used in aqueous solution containing MgCl 2 or Mg(SO 4 ) 2 and optionally polyethylene emulsion and/or a copolymer of butyl acrylate/butylene diacrylate / methylol methacrylamide / acrylamide and optionally ethoxylated iso-octylphenol.

    Dyeing cellulosic textile allowing repeated use of dye-bath - by deactivating dyestuff before replenishment to reduce salt loss without impairing dyeing quality
    5.
    发明专利
    Dyeing cellulosic textile allowing repeated use of dye-bath - by deactivating dyestuff before replenishment to reduce salt loss without impairing dyeing quality 未知

    公开(公告)号：DE4010251A1

    公开(公告)日：1991-10-02

    申请号：DE4010251

    申请日：1990-03-30

    Applicant: BASF AG

    Inventor： KRUEGER RUDOLF DR ,  RUETTIGER WILHELM DR

    IPC: D06P1/00 ,  D06P3/66

    Abstract: In dyeing cellulosic textile material with reactive dyestuff (I) from aq. dyebaths an exhausted dyebath is used, in which residual (I) has been deactivated, and replenished with fresh amts. of (I) and any ancillaries needed for reactive dyeing. Residual (I) is deactivated by heating ca. 20-30 deg.C above the dyeing temp. USE/ADVANTAGE - The technique allows repeated use of the dyebath without affecting the dyeing quality and is universally applicable. It avoids increasing the salt consumption and associated costs and increases the fixing yield, i.e. saves (I). Losses and disposal costs are only ca. 5-20% of the usual levels. It is even possible e.g. to use an exhausted bath of red dyestuff for dyeing with a fresh yellow dyestuff, without impairing the quality of the yellow dyeing. 100 kg cotton yarn packages were dyed for 45 min at 45 deg.C with 1000 l aq. dyebath contg. 5 kg of the reactive dyestuff Reactive Red 2 (dichlorotriazine reactive gps.), 70 kg NaCl and 15 kg Na2CO3. 800 l exhausted dyebath were recovered and heated to 80 deg.C to deactivate the residual dyestuff.

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