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    PROCESS FOR DYEING CELLULOSE FIBERS
    14.
    发明专利
    PROCESS FOR DYEING CELLULOSE FIBERS 未知

    公开(公告)号：CA1071357A

    公开(公告)日：1980-02-12

    申请号：CA234619

    申请日：1975-08-29

    Applicant: BASF AG

    Inventor： WOLF HANS ,  GERENDAS JOZSEF ,  WILHELM ERNST

    IPC: D06P1/52 ,  D06P3/60 ,  D06P3/82

    Abstract: A process for the dyeing of cellulose fibers or mixtures of cellulose fibers with synthetic fibers which comprises dyeing a textile material made of said cellulose fibers or said mixtures of fibers by the exhaustion method at ambient temperature to about 130.degree.C in an aqueous liquor containing a dye for cellulose fibers and, as dyeing assistant, from 0,05 to 2% by weight, based on the material being dyed, of a water-soluble polymer selected from the group consisting of water-soluble homopolymers of acrylic acid, water soluble copolymers of acrylic acid with up to 50% by weight of methacrylic acid, methacrylamide, acrylamide, acrylonitrile, methacrylonitrile, esters of acrylic acid and methacrylic acid, crotonic acid and itaconic acid, copolymers of maleic acid with styrene, copolymers of maleic acid with vinyl esters, copolymers of maleic acid with vinyl ethers and the alkali metal and ammonium salts of the said polymers, said polymer having a viscosity of 7,5% by weight solution of the polymer in water at a pH of 9 and a temperature of 20.degree.C of from 1 to 300 centipoises. Level dyeings are obtained and mixtures of fibers can be dyed in a single liquor.

    15.
    发明专利
    未知

    公开(公告)号：DE1917535A1

    公开(公告)日：1970-10-15

    申请号：DE1917535

    申请日：1969-04-05

    Applicant: BASF AG

    Inventor： WILHELM ERNST

    IPC: D06B15/09

    16.
    发明专利
    未知

    公开(公告)号：FR1455035A

    公开(公告)日：1966-04-01

    申请号：FR983818

    申请日：1964-07-31

    Applicant: BASF AG

    Inventor： SCHOBER ERHARD ,  JANSON ALFONS ,  SCHLUETER HARALD ,  WILHELM ERNST

    IPC: D06P1/22

    Abstract: Vat and/or sulphur dyes are reduced with a mixture of sodium dithionite with (a) a derivative of ammonia containing at least once, attached via nitrogen, the radical of an alkali metal or ammonium salt of an alkylsulphinic acid having 1-4 C atoms and/or with (b) an alkali metal or ammonium salt of a hydroxyalkylsulphinic acid having 2-4 C atoms. Compounds (a) may have the formula I wherein x is an integer 0-2, y is an integer 1-3, x and y being 3, A is H, low alkyl or low alkyl substituted by a radical of Formula III below and D is a radical of 1-4 C atoms of the formula II wherein each R is H or alkyl and Z is an ammonium or alkali metal cation, the radical designated by A having the formula III wherein p and q are integers 0-2 and p + q is 2. Textile materials, e.g. of cotton, may be bleached using the present reductive mixtures (see Example 8). The dyebaths or bleaching solutions may also contain ethylenediaminetetraacetic acid, nitrilotriacetic acid or alkali metal salts thereof. Examples of dyeing cotton and viscose fabrics are given.

    Dyeing textile material with vat and sulphur dyes
    17.
    发明专利
    Dyeing textile material with vat and sulphur dyes 未知

    公开(公告)号：GB1015626A

    公开(公告)日：1966-01-05

    申请号：GB3124664

    申请日：1964-08-04

    Applicant: BASF AG

    Inventor： SCHOBER ERHARD ,  JANSON ALFONS ,  SCHLUETER HARALD ,  WILHELM ERNST

    IPC: D06P1/22

    Abstract: Vat and/or sulphur dyes are reduced with a mixture of sodium dithionite with (a) a derivative of ammonia containing at least once, attached via nitrogen, the radical of an alkali metal or ammonium salt of an alkylsulphinic acid having 1-4 C atoms and/or with (b) an alkali metal or ammonium salt of a hydroxyalkylsulphinic acid having 2-4 C atoms. Compounds (a) may have the formula I wherein x is an integer 0-2, y is an integer 1-3, x and y being 3, A is H, low alkyl or low alkyl substituted by a radical of Formula III below and D is a radical of 1-4 C atoms of the formula II wherein each R is H or alkyl and Z is an ammonium or alkali metal cation, the radical designated by A having the formula III wherein p and q are integers 0-2 and p + q is 2. Textile materials, e.g. of cotton, may be bleached using the present reductive mixtures (see Example 8). The dyebaths or bleaching solutions may also contain ethylenediaminetetraacetic acid, nitrilotriacetic acid or alkali metal salts thereof. Examples of dyeing cotton and viscose fabrics are given.

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