EP0557730B1 - Composition de régulation de blanchiment et procédé d'applications - Google Patents

Composition de régulation de blanchiment et procédé d'applications Download PDF

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Publication number
EP0557730B1
EP0557730B1 EP93101290A EP93101290A EP0557730B1 EP 0557730 B1 EP0557730 B1 EP 0557730B1 EP 93101290 A EP93101290 A EP 93101290A EP 93101290 A EP93101290 A EP 93101290A EP 0557730 B1 EP0557730 B1 EP 0557730B1
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EP
European Patent Office
Prior art keywords
weight
parts
bleaching
compositions according
amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93101290A
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German (de)
English (en)
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EP0557730A1 (fr
Inventor
Wolfgang Raimann
Josef Dipl.-Ing. Pfeiffer
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Bayer AG
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Bayer AG
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • C11D3/394—Organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives

Definitions

  • the invention relates to bleach regulator (stabilizer) compositions for bleaching with H 2 O 2 containing gluconic acid, nitrilotriacetic acid and magnesium in ionic form, to which a content of citric acid also occurs.
  • bleach regulators are used in aqueous, alkaline solution.
  • Natural vegetable fibers such as cotton, sisal, jute, etc. contain raw waxes, fats and other plant components that cause a yellowish-brown coloring of the fibers. This means that not all of the desired colors are possible; Colorings are also uneven.
  • a treatment of these fibers is therefore carried out in which bleaching and washing are combined.
  • Such treatment can be applied to the fibers of the named origin, to yarns made therefrom and to Woven, knitted or non-woven of such fibers. This treatment can also be applied to mixtures of such fibers with synthetic fibers and products made therefrom.
  • So-called bleaching liquors which contain water, hydrogen peroxide, wetting / washing and emulsifying agents, alkali for adjusting the pH and H 2 O 2 regulators (stabilizers) are used for carrying out the combined treatment mentioned.
  • Na silicate and inorganic phosphates for example, have long been used as regulators. Because of the over-fertilization of the waste water, the inorganic phosphates were later replaced by (poly) -phosphonates. However, these phosphonates are difficult or not at all degradable and thus pollute the wastewater again in a different way.
  • EDTA biodegradable ethylenediamine tetraacetic acid
  • JP 50/157 667 (cited from CA 84 , 123 349 n) describes the bleaching of cotton, rayon or polyester / cotton in the presence of Mg ++ ions and aminoacetic acid derivatives and sugar acids.
  • Mg ++ ions and aminoacetic acid derivatives and sugar acids.
  • H 2 O 2 , sodium silicate, a nonionic surfactant, nitrilotriacetic acid-Na 3 salt, Na-D-mannonate and Mg ++ ions are used in a mixture. The aim of this process is to maintain the tear strength of the fabric through the presence of nitrilotriacetic acid.
  • Ingredient a) is preferably present in an amount of 0.1 to 10 parts by weight, particularly preferably 0.1 to 8 parts by weight.
  • component b) is present in an amount of 10 to 150 parts by weight, particularly preferably 15 to 120 parts by weight.
  • component c) is present in an amount of 4 to 12 parts by weight, particularly preferably 4 to 8 parts by weight.
  • component d) is present in an amount of 4 to 30 parts by weight, particularly preferably 5 to 25 parts by weight.
  • the bleach regulator compositions according to the invention are used in aqueous, alkaline solution.
  • the components a), b), c) and d) are present together in an amount of 10 to 60% by weight, preferably 25 to 40% by weight, based on the total aqueous, alkaline solution.
  • an alkali hydroxide is added until a pH of 7.5 to 14 is reached.
  • Such a wide pH range up to a strongly alkaline setting is fundamentally possible, because in the bleaching liquor to which the bleach regulator compositions according to the invention are added, alkali must be added anyway.
  • a lower pH has proven to be more favorable.
  • a pH of 7.5 to 12.5, particularly preferably 7.5 to 12, is therefore preferably carried out.
  • sodium hydroxide is preferred as the alkali hydroxide, although in principle KOH or LiOH are also possible; it can be used both in solid form and in the easy-to-handle aqueous solution with, for example, 10 to 60% by weight.
  • the invention further relates to a method for bleaching natural vegetable fibers or their mixtures with synthetic fibers or of yarns, fabrics, knitted fabrics or nonwovens made from such fibers or their mixtures in bleaching liquors, the water, alkali, hydrogen peroxide, wetting, washing and emulsifying agents as well as bleach regulators, which is characterized in that compositions of the type described above are used as bleach regulators.
  • the process according to the invention can be carried out in a number of different embodiments, all of which are known to the person skilled in the art as prior art: bleaching in a long liquor (discontinuous or continuous); Block Cold Dwell Process (KKV); Pad steam process; Pad roll process and others.
  • Natural vegetable fibers for example cotton, jute, linen or regenerated cellulose, as well as animal fibers, such as silk and wool, and their mixtures with synthetics can be bleached according to the invention.
  • Vegetable fibers are preferred, particularly preferably cotton and mixtures thereof.
  • a bleach regulator composition according to the invention is used in addition to water, alkali hydroxide, wetting agents, detergents and emulsifiers and hydrogen peroxide.
  • hydrogen peroxide is present in an amount of 0.5-100 ml / l.
  • the alkali metal hydroxide is added in an amount and added so that a pH of 7.5 to 14 is maintained in the bleaching liquor becomes.
  • Wetting, washing and emulsifying agents are those which are known to the person skilled in the art in this field.
  • anionic, cationic or non-ionic surfactants are individual substances or mixtures of the known anionic, cationic or non-ionic surfactants; it is preferably anionic or non-ionic surfactants, such as fatty acids and their salts, fatty acid alkyl esters, fatty alcohols, fatty alcohol polyglycol ethers, glycerols, alkyl aromatic sulfonic acids and others
  • these surfactants are selected and put together in such a way that the undesired accompanying substances of the natural vegetable fibers, such as fats, waxes and other plant components (e.g. residues of seed capsules etc.) are removed.
  • Demineralized water or a customary made-up water which has a different degree of hardness depending on the occurrence, can be used as water.
  • the bleach regulator compositions serve as stabilizers for the hydrogen peroxide. It regulates the release of oxygen to bleach the fibers.
  • Gluconic acid, nitrilotriacetic acid and citric acid are used for the complexation and "masking" of alkaline earth metals, in particular the disruptive Ca ions and heavy metals.
  • Gluconic acid and nitrilotriacetic acid can be used both as free acids and as an alkali salt (preferably as a sodium salt).
  • Citric acid can also be used as the alkali metal salt or as the free acid.
  • citric acid is used as the technically available citric acid monohydrate.
  • Magnesium ions and calcium ions as an example of alkaline earth ions and iron as an example of heavy metal ions that are to be complexed are natural components of the commonly available process water. Alkaline earth metal ions and heavy metal ions can also be introduced as impurities in the natural vegetable fibers to be bleached.
  • deionized water both the calcium to be complexed and the magnesium desired as a co-stabilizer are missing, while the constituents brought in by impurities in the natural vegetable fibers must still be taken into account.
  • bleach regulator compositions according to the invention are able to cover the entire range of applications described.
  • the phosphonates used earlier or still today and considered to be irreplaceable are not biodegradable and pollute the waste water.
  • the EDTA which is also not degradable, also pollutes the water because of the risk of remobilization of the heavy metal ions.
  • a typical bleach regulator composition is obtained by combining 28% by weight of an aqueous sodium gluconate solution (60%), 5% by weight of nitrilotriacetic acid trisodium salt, 8% by weight of citric acid monohydrate and 2% by weight of magnesium oxide and 6% by weight 50% sodium hydroxide solution. The rest (51% by weight) is demineralized water. The composition had a pH of 7.5.
  • Typical bleaching liquors consist of
  • the composition has a pH of 7.5.
  • the composition has a pH of 11.2.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Paper (AREA)

Claims (10)

  1. Compositions régulatrices de blanchiment qu'on utilise en solution aqueuse réglée alcaline et qui consistent, à l'état anhydre et exempt d'alcali, en
    a) 0,1 à 20 parties en poids d'ions magnésium, exprimé en MgO,
    b) 3 à 200 parties en poids d'acide gluconique, exprimé en acide libre,
    c) 3 à 25 parties en poids d'acide nitrilotriacétique, exprimé en acide libre et
    d) 4 à 40 parties en poids d'acide citrique, exprimé en acide citrique monohydraté.
  2. Compositions selon la revendication 1, caractérisées en ce que le composant a) est présent en quantité de 0,1 à 10 parties en poids, de préférence de 0,1 à 8 parties en poids.
  3. Compositions selon la revendication 1, caractérisées en ce que le composant b) est présent en quantité de 10 à 150 parties en poids, de préférence de 15 à 120 parties en poids.
  4. Compositions selon la revendication 1, caractérisées en ce que le composant c) est présent en quantité de 4 à 12 parties en poids, de préférence de 4 à 8 parties en poids.
  5. Compositions selon la revendication 1, caractérisées en ce que le composant d) est présent en quantité de 4 à 30 parties en poids, de préférence de 5 à 25 parties en poids.
  6. Compositions régulatrices de blanchiment à l'état de solutions aqueuses réglées alcalines, caractérisées en ce que les composants a), b), c) et d) selon la revendication représentent au total de 10 à 60 %, de préférence de 25 à 40 % du poids total de la solution aqueuse réglée alcaline et en ce que, pour le réglage alcalin, on a ajouté un hydroxyde alcalin jusqu'à un pH de 7,5 à 14.
  7. Compositions selon la revendication 6, caractérisées en ce que l'hydroxyde alcalin utilisé est l'hydroxyde de sodium à l'état solide ou à l'état de solution à une concentration de 10 à 60 % en poids.
  8. Compositions selon la revendication 6, caractérisées en ce que l'on a réglé alcalin jusqu'à un pH de 7,5 à 12,5, de préférence de 7,5 à 12.
  9. Procédé pour le blanchiment de fibres végétales naturelles à base de cellulose, de la cellulose régénérée, de la soie, de la laine ou de leurs mélanges avec des fibres synthétiques ou de filés, tissus, tricots ou nappes consistant en ces fibres ou leurs mélanges, dans des bains de blanchiment contenant de l'eau, un alcali, du peroxyde d'hydrogène, des agents mouillants, détergents et émulsionnants et des régulateurs de blanchiment, caractérisé en ce que l'on utilise des régulateurs de blanchiment selon la revendication 1.
  10. Procédé selon la revendication 9, caractérisé en ce que les fibres qu'on soumet au blanchiment sont des fibres de cellulose, de cellulose régénérée, de laine, de soie, de mélanges avec des fibres synthétiques, telles quelles ou sous forme confectionnée.
EP93101290A 1992-02-10 1993-01-28 Composition de régulation de blanchiment et procédé d'applications Expired - Lifetime EP0557730B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4203797A DE4203797A1 (de) 1992-02-10 1992-02-10 Bleichregulator-zusammensetzungen und bleichverfahren damit
DE4203797 1992-02-10

Publications (2)

Publication Number Publication Date
EP0557730A1 EP0557730A1 (fr) 1993-09-01
EP0557730B1 true EP0557730B1 (fr) 1997-07-16

Family

ID=6451317

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EP93101290A Expired - Lifetime EP0557730B1 (fr) 1992-02-10 1993-01-28 Composition de régulation de blanchiment et procédé d'applications

Country Status (6)

Country Link
US (1) US5510055A (fr)
EP (1) EP0557730B1 (fr)
JP (1) JPH061998A (fr)
CA (1) CA2088952A1 (fr)
DE (2) DE4203797A1 (fr)
ZA (1) ZA93886B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5670082A (en) * 1993-06-11 1997-09-23 Ciba-Geigy Corporation Bleaching auxiliary
ES2157966T3 (es) * 1993-06-11 2001-09-01 Ciba Sc Holding Ag Agente auxiliar de blanqueo.
DE4344029A1 (de) * 1993-12-23 1995-06-29 Grillo Werke Ag Copolymerisate ungesättigter Carbonsäuren, Verfahren zur Herstellung und ihre Verwendung
DE4428360A1 (de) * 1994-08-10 1996-02-15 Woellner Werke Stabilisierungsmittel-Konzentrat für wäßrige Bleichlösungen auf Basis von Wasserstoffperoxid und/oder anderen anorganischen und/oder organischen Peroxoverbindungen
DE19809359A1 (de) * 1998-03-05 1999-09-09 Bayer Ag Gleichzeitiges Waschen und Bleichen nativer Fasern und textiler Erzeugnisse daraus
DE19810885A1 (de) * 1998-03-13 1999-10-07 Henkel Kgaa Verfahren zur schonenden Bleiche von textilen Flächengebilden
AU2007257276B2 (en) 2006-06-08 2011-04-28 National Research Council Of Canada Extraction of hemp fibers
US8603802B2 (en) 2009-01-13 2013-12-10 National Research Council Of Canada Enzymatic preparation of plant fibers
JP2014037476A (ja) * 2012-08-14 2014-02-27 Kinboshi Inc 洗浄剤組成物
EP3409265A1 (fr) * 2017-05-29 2018-12-05 Basf Se Procédé de fabrication de disels de couleur claire

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Publication number Priority date Publication date Assignee Title
US2927082A (en) * 1956-01-19 1960-03-01 Du Pont Peroxide bleaching compositions and their use
US3345303A (en) * 1964-12-08 1967-10-03 Shell Oil Co Bleaching composition
US3795625A (en) * 1971-06-03 1974-03-05 Monsanto Co Bleaching compositions
BE795085A (fr) * 1972-03-10 1973-05-29 Benckiser Knapsack Gmbh Procede de blanchiment de fibres cellulosiques seules ou en melange avec des fibres synthetiques
FR2323631A1 (fr) * 1975-09-15 1977-04-08 Ugine Kuhlmann Persels mixtes stables en melange lixiviel
DE3545909A1 (de) * 1985-12-23 1987-06-25 Henkel Kgaa Silikat- und magnesiumfreie wirkstoffgemische
DE4208106B4 (de) * 1991-03-20 2006-10-05 Clariant Finance (Bvi) Ltd. Vorbehandlung von Textilfasermaterial
US5362412A (en) * 1991-04-17 1994-11-08 Hampshire Chemical Corp. Biodegradable bleach stabilizers for detergents

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 78, no. 12, 26. März 1973, Columbus, Ohio, US; abstract no. 73587, KAKINUMA, KAZUMI ET AL. 'Bleaching of cellulose fiber textiles with hydrogen peroxide and hydroxycarboxylic acid' & JP-A-47 025 485 *
CHEMICAL ABSTRACTS, vol. 84, no. 18, 3. Mai 1976, Columbus, Ohio, US; abstract no. 123349, YOTSUYA, MINORU ET AL. 'Bleaching of textiles' & JP-A-50 157 667 *

Also Published As

Publication number Publication date
CA2088952A1 (fr) 1993-08-11
JPH061998A (ja) 1994-01-11
EP0557730A1 (fr) 1993-09-01
US5510055A (en) 1996-04-23
DE59306905D1 (de) 1997-08-21
ZA93886B (en) 1993-09-23
DE4203797A1 (de) 1993-08-12

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