EP0210132B2 - Composition aqueuse alcaline contenant des silicates pour le blanchiment de matières fibreuses cellulosiques en présence de composés "per" - Google Patents

Composition aqueuse alcaline contenant des silicates pour le blanchiment de matières fibreuses cellulosiques en présence de composés "per" Download PDF

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EP0210132B2
EP0210132B2 EP86810313A EP86810313A EP0210132B2 EP 0210132 B2 EP0210132 B2 EP 0210132B2 EP 86810313 A EP86810313 A EP 86810313A EP 86810313 A EP86810313 A EP 86810313A EP 0210132 B2 EP0210132 B2 EP 0210132B2
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composition according
formula
component
alkali metal
compound
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EP0210132A1 (fr
EP0210132B1 (fr
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Albert Stehlin
Christian Guth
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Novartis AG
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Ciba Geigy AG
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    • 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
    • C11D3/16—Organic compounds
    • C11D3/36—Organic compounds containing phosphorus
    • C11D3/361—Phosphonates, phosphinates or phosphonites
    • 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
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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 aqueous compositions of a phosphonic acid ester, a polyhydroxy compound, an alkali metal silicate, an alkali metal hydroxide, a magnesium salt and a surfactant, from the group of alkyl, aryl or alkarylsulfonates and a process for their preparation, their use as bleach activator and bleach stabilizer in per compounds Fleets, a process for bleaching cellulosic fiber materials, an aqueous liquor containing the composition.
  • EP-A-0 112 801 discloses an alkaline, peroxide-containing bleaching liquor which contains an alkali metal hydroxide, hydrogen peroxide, a magnesium complex of a phosphonic acid ester and a polyhydroxy compound.
  • the disclosed bleaching liquor can also contain a peroxydisulfonate, a nonionic or anionic wetting agent, an alkali metal silicate, the alkali metal salts of bis (phenylamino-dialkylamino-s-triazinyl) -stilbene-disulfonic acids or of bis (phenylamino-morpholino-s- triazinyl) -stilbene disulfonic acids as optical brighteners and other components.
  • Anionic surfactants such as alkyl, aryl or alkaryl sulfonates are preferably used as wetting agents.
  • Such bleaching liquors however, have inadequate storage stability at high pH values of -14 and particularly high alkali metal concentrations.
  • the monomeric compounds of the formula are of particular importance correspond in which Y 3 is hydrogen or acetyl.
  • Such oligomeric phosphonic acid esters of formula (6) and their preferred embodiments of formulas (7) and (8) are e.g. B. described in U.S. Patent 4,515,597.
  • mixtures of the monomeric and oligomeric compounds of the type indicated are known per se and are prepared by known methods.
  • So z. B. the mixture of formula (12) is preferably prepared by reacting phosphorus trichloride, acetic acid and optionally acetic anhydride in an aqueous medium.
  • component (a) of the composition according to the invention also includes oligomeric compounds of one of the formulas (6) to (9), which form an essential constituent of the mixtures of monomeric and oligomeric compounds.
  • oligomeric compounds are used as component (a)
  • they are at least partially hydrolyzed to the corresponding monomeric compounds in the aqueous composition according to the invention in the presence of an alkali metal hydroxide.
  • component (a) of the compositions according to the invention are also, above all, monomeric compounds of one of the formulas (2) to (5).
  • Component (a) acts as a complexing agent for alkaline earth and heavy metals in aqueous liquors which contain a per-compound, e.g. B. contain hydrogen peroxide, during pretreatment, especially bleaching cellulosic fiber materials.
  • component (a) in the bleaching liquor suppresses the decomposition of the per-compound by free, i.e. heavy metals which are not present as a complex and which may be present in process water.
  • Component (a) is preferably used as 35 to 90, preferably 40 to 85, in particular 40 to 60 percent by weight, aqueous solution in the composition according to the invention.
  • the aqueous solutions of component (a) may possibly contain phosphorous acid and acetic acid or their anhydride.
  • gluconic acid and its alkali metal salts preferably the potassium or in particular sodium salt and also the y-lactone of gluconic acid.
  • Such compounds are also described in U.S. Patent 4,515,597. They also act as complexing agents in bleaching liquors for pretreating cellulosic fiber materials. This complex formation is also ensured in bleaching liquors with pH values above 11. These compounds are usually used as a solid substance.
  • the alkali metal silicates are generally water-soluble. Above all, sodium water glass comes into consideration, which has a preferred SiO 2 content of about 24 to 28 percent by weight as a commercial product. Commercial, aqueous, approximately 30 to 40 percent by weight solutions of sodium water glass are used in particular. These silicates enable longer treatment times in bleaching liquors to pretreat cellulosic fiber materials.
  • potassium hydroxide or in particular the less expensive sodium hydroxide are suitable as alkali metal hydroxides.
  • Mixtures of potassium hydroxide and sodium hydroxide are particularly suitable for use in view of the homogeneity of the composition. They are preferably used in the undiluted state and in amounts of not less than 9% based on the total weight of the composition.
  • solid caustic potash especially solid caustic soda and very particularly a mixture of solid caustic potash and solid caustic soda, is of primary interest, the weight ratio (caustic soda): (caustic potash) generally being 1: 0.01 to 1: 2, especially 1 : 0.05 to 1: 0.25.
  • the alkalinity of the composition when adding higher amounts of caustic potash is determined by the concentration of alkali hydroxide.
  • magnesium salts come preferably z. B. the acetate, especially the sulfate or its heptahydrate and especially the chloride or its hexahydrate.
  • This component is generally used as a solid, with solid magnesium chloride hexahydrate being of primary interest.
  • this component forms with component (a) a water-soluble magnesium complex which acts as a bleach stabilizer.
  • the presence of the magnesium complex causes it to be maintained over a longer period of time, or at least only a reduced decrease in the original content of per-compound, e.g. B. of hydrogen peroxide in the bleaching liquors which contain the composition according to the invention.
  • Suitable anionic dispersants for component (b) are, in particular, the potassium or, in particular, sodium salts of an alkyl disulfonic acid, aryl disulfonic acid or alkaryl disulfonic acid, which in the undiluted state, for. B. is used as a powder or paste or as an aqueous, at least 40 weight percent, preferably 40 to 95 weight percent solution.
  • the alkyl radical of alkyl disulfonic acid generally has 8 to 20 carbon atoms.
  • An example is the disodium salt of pentadecane-1,8-disulfonic acid, in the form of an aqueous 40 to 60 percent by weight solution.
  • the aryl disulfonic acid is primarily a derivative of naphthalene monosulfonic acid, which is preferably present as a reaction product with formaldehyde, generally 2 or 3 moles of naphthalenesulfonic acid per 1 or 2 moles Formaldehyde can be used.
  • An example is methylene bis (2,2'-naphthalene-7,7'-sodium sulfonate) in the form of its aqueous, 80 to 95 percent by weight solution.
  • the alkaryldisulfonic acids which are considered, inter alia, have straight-chain or branched alkyl chains with at least 4, preferably 4 to 22, in particular 4 to 18 carbon atoms.
  • alkaryl disulfonic acids are e.g. B. dodecylbenzene disulfonic acids or 3,7-diisobutylnaphthalenedisulfonic acids or especially disulfonated benzyl-alkyl-benzimidazoles, which preferably have 8 to 22 carbon atoms in the alkyl radical.
  • the focus of interest is e.g. B. a 1-benzyl-2-heptadecylbenzimidazole disulfonic acid disodium salt, which is mainly used in powder form.
  • the alkali metal salts of the disulfonic acids mentioned as component (b) are anionic dispersants which relate to the storage stability of the concentrated compositions according to the invention at the high pH values of -14, in particular the higher alkali concentrations (e.g. from 9 percent caustic potash and / or caustic soda) on the total weight of the composition).
  • the preparation of the composition according to the invention is generally carried out by adding an aqueous solution (A) of components (b) and an alkali metal silicate to half the total amount of the alkali metal hydroxide, then adding an aqueous solution (B) to solution (A) there, which contains component (a), a polyhydroxy compound and a magnesium salt and finally the mixture of solutions (A) and (B) with the remaining amount of the alkali metal hydroxide.
  • the temperature of the reaction mixture increases by itself, if necessary, for. B. must be cooled from outside at temperatures above 80 ° C.
  • the procedure is preferably such that the mixing of solution (A) with the first half of the alkali metal hydroxide and then with solution (B) and finally with the second half of the alkali metal hydroxide at a temperature of at most 80 ° C., preferably 60 to 70 ° C performed.
  • the procedure described has the essential advantage that the addition of the alkali metal hydroxide in two portions does not result in any undesired precipitation during the production process.
  • the solution (A) from components (b) and the silicate and solution (B) from component (a), the polyhydroxy compound and the magnesium salt, which are generally in the form of aqueous solutions can be kept in stock and at any time thanks to their excellent storage stability Addition of the alkali metal hydroxide in the procedure described can be processed if necessary to give the compositions according to the invention.
  • the aqueous bleaching liquors mentioned at the outset for carrying out the application process in which the composition according to the invention is used contain, for example, B. alkali metal peroxysulfates or especially alkali metal peroxysulfates.
  • the potassium and in particular the sodium peroxydisutate or peroxysutate are preferred.
  • sodium peroxysulfate (Na 2 S 2 0 8 ) is particularly preferred, which is usually tel quel. ie used as a solid.
  • the per compound is hydrogen peroxide (H 2 0 2 ) in the foreground of interest, which is generally used as a concentrated, approximately 30 to 60 percent by weight solution because of its higher stability.
  • the bleaching liquors optionally contain wetting agents or detergents. Defoaming or venting agents and / or optical brighteners.
  • Wetting agents or detergents are generally used as an optional component of the bleaching liquors, provided that the cellulose in the cellulose-containing fiber material to be treated is in the raw state or in particular consists of raw cotton.
  • Anionic or non-ionic surfactants are used as wetting or washing agents. but especially their mixtures.
  • Preferred non-ionic surfactants are e.g. B. adducts of alkylene oxides, especially propylene and especially ethylene oxide and alkylphenols with z. B.
  • Defoamers or deaerating agents are required as optional components of the bleaching liquor, especially if a wetting or washing agent is present in the bleaching liquor. This is e.g. B. to higher alcohols, especially isooctanol, but above all defoaming and / or deaerating agents based on silicone, in particular silicone oil emulsions.
  • optical brighteners used as an optional component of the bleaching liquors to achieve a particularly high degree of whiteness of the treating materials generally belong to the styryl and stilbene series, such as, for. B. distyrylarylenes, diaminostilbenes, ditriazolylstilbenes, phenylbenzoxazolylstilbenes, stilbene naphthotriazoles and dibenzoxazolylstilbenes.
  • Optical brighteners of the distyrylbiphenyl or bistriazinylaminostilbene type which contain sulfonic acid groups, e.g. B.
  • sulfonated distyrylbiphenyl and bistriazinyl derivatives especially those present as alkali metal salts, especially as potassium or preferably as sodium salts of bis (phenylamino-morpholino-s-triazinyl) -stilbene-disulfonic acids.
  • alkali metal salts especially as potassium or preferably as sodium salts of bis (phenylamino-morpholino-s-triazinyl) -stilbene-disulfonic acids.
  • the bleaching liquor s an alkali metal hydroxide, especially potassium or especially sodium hydroxide, preferably as a concentrated, about Add 30 percent by weight solution or as a solid caustic potash or especially caustic soda.
  • the application process for bleaching cellulose-containing fiber materials using the compositions according to the invention is generally carried out in such a way that the bleaching liquor is first applied to the fiber material, as a rule, for. B. by immersion, padding and preferably by padding at z. B. 10 to 60 ° C, but preferably at room temperature (15 to 25 ° C), the liquor pickup after squeezing is about 50 to 120, preferably 90 to 110 weight percent.
  • the fiber material is usually subjected to a so-called wet storage process in the wet state, in which the material in the rolled-up state, optionally in an airtight packaging, and z. B. at 80 to 90 ° C for about 1 to 5 hours or in particular at room temperature for about 10 to 30 hours.
  • the treatment of the fiber materials can also in so-called long liquors with a liquor ratio of z. B. 1: 3 to 1: 100, preferably 1: 8 to 1:25 and at 20 to 100, preferably 80 to 98 ° C for about 1/4 to 3 hours under normal conditions, i.e. under atmospheric pressure in conventional equipment, e.g. B. a jigger or a reel run. If necessary, however, the treatment can also be carried out up to 150.degree. C., preferably 105 to 140.degree. C., under pressure in so-called high-temperature apparatus (HT apparatus).
  • HT apparatus high-temperature apparatus
  • Treatment temperatures of 98 ° C are advantageously not exceeded in order to prevent any fiber damage.
  • the fiber materials can also be used in industrial continuous processes under pressure up to z. B. 2.5 bar at higher temperatures, e.g. B. up to 150 ° C, if the treatment time is kept so short that fiber damage is excluded.
  • the fiber materials are generally rinsed thoroughly with hot water at about 90 to 98 ° C and then with warm and finally with cold water, if necessary with z. B. neutralized acetic acid and then preferably dehydrated and dried at elevated temperatures (z. B. to 150 ° C).
  • the material to be treated with collulose can be present in a wide variety of processing stages, e.g. B. as loose material, yarn, fabric or knitted fabric. As a rule, these are always textile fiber materials which are produced from pure textile cellulose fibers or from mixtures of textile cellulose fibers with textile synthetic fibers.
  • cellulosic fibers come e.g. B. those made of regenerated cellulose, such as. B. cellulose and viscose, such as native cellulose, such as. B. hemp, linen, jute and especially cotton and as a synthetic Fa
  • regenerated cellulose such as. B. cellulose and viscose, such as native cellulose, such as. B. hemp, linen, jute and especially cotton and as a synthetic Fa
  • native cellulose such as. B. hemp, linen, jute and especially cotton and as a synthetic Fa
  • These are made of polyacrylonitrile and especially polyester and polyamide.
  • Fabrics made of cotton or regenerated cellulose or blended fabrics made of cotton and polyester and made of cotton and polyamide are particularly well suited to being treated according to the invention, with cotton fabrics and knitted fabrics being of primary interest.
  • Surfactants prewashed materials are also suitable. It is also possible to bleach sized cotton fibers, bleaching after or before desizing.
  • the fiber materials treated using the composition according to the invention are distinguished by their shell freedom, their good rewettability, their low ash content and, above all, their high degree of whiteness.
  • compositions according to the invention when used, cause little or no incrustation of the bleaching apparatus and no incrustation on the treated fiber material.
  • compositions according to the invention are their particularly high storage stability over several months.
  • Example 1 The procedure described in Example 1 is followed, except that 10% of an aqueous solution is used in solution (B) which, in addition to phosphorous acid and acetic acid, contains 44% of a mixture of monomeric and oligomeric compounds obtained from phosphorus trichloride and acetic acid in an aqueous medium, which Correspond to formula (12) in which Y 3 represents hydrogen.
  • solution (B) which, in addition to phosphorous acid and acetic acid, contains 44% of a mixture of monomeric and oligomeric compounds obtained from phosphorus trichloride and acetic acid in an aqueous medium, which Correspond to formula (12) in which Y 3 represents hydrogen.
  • Example 2 The procedure described in Example 1 is followed, except that 10% of an aqueous solution is used in solution (B) which, in addition to phosphorous acid and acetic anhydride, contains 83% of a mixture of monomeric and oligomeric compounds obtained from phosphorus trichloride, acetic acid and acetic anhydride and having the formula (12) where Y 3 is acetyl.
  • solution (B) which, in addition to phosphorous acid and acetic anhydride, contains 83% of a mixture of monomeric and oligomeric compounds obtained from phosphorus trichloride, acetic acid and acetic anhydride and having the formula (12) where Y 3 is acetyl.
  • aqueous, 35% hydrogen peroxide solution Contains 20 ml of an aqueous, 35% hydrogen peroxide solution and brought to a liquor absorption of 100% by squeezing.
  • the tissue is then steamed at around 100 ° C for 10 minutes and then immediately rinsed first with hot water (90 to 98 ° C), then with warm and finally with cold water.
  • the tissue is then neutralized by washing with an aqueous, dilute acetic acid solution and then dewatered and finally dried at 100 ° C.
  • the treated fabric is shell-free and has an excellent rewettability of 2.5 s / I cm according to DIN 53924.
  • the increase in whiteness of the bleached fabric in comparison with the raw fabric before bleaching is assessed using the CIBA-GEIGY white scale (cf. R. Griesser, "Tenside Detergents", Volume 12, No. 2, pages 93 to 100 (1975)).
  • the degree of DP of the unbleached fabric is only slightly reduced by the bleaching. According to SNV 195 558 it is 2550 before bleaching and 2380 after bleaching. After the treatment, the residual peroxide content is still 29%.
  • This bleaching liquor can be used for further bleaching processes; it usually becomes unusable when the concentration of hydrogen peroxide has dropped below about 20%.
  • a composition is used in the bleaching liquor which does not contain any magnesium complex from component (a) and the magnesium salt, the hydrogen peroxide contained in the liquor largely decomposes. In this case, the residual peroxide content after the bleaching process is only 2%.
  • the bleached fabric is shell-free.
  • the whiteness of the fabric is increased from -40 before bleaching to +69 after bleaching. After bleaching, the residual peroxide content in the bleaching liquor is 46%.
  • the bleached fabric is shell-free.
  • the whiteness of the fabric is increased from -77 before bleaching to +53 after bleaching. After bleaching, the residual peroxide content in the bleaching liquor is 53%.
  • the bleaching process increases the whiteness of the treated blended fabric from 0 to 55 CIBA-GEIGY whiteness units.
  • the hydrogen peroxide content of the damped fabric after treatment is still 58% of the original value.
  • the bleached fabric has practically not been damaged by the bleaching process: the DP level is 2760 before bleaching and 2690 after bleaching.

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Claims (28)

1. Composition aqueuse renfermant (a) 0,1 à 2 % d'un mélange de composés monomères et oligomères, qui répondent à la formule :
Figure imgb0043
où Y1 représente l'hydrogène ou -CO-T1, R1, X1 et T1 représentent chacun, indépendamment, un groupe alkyle comportant de 1 à 4 atomes de carbone, et m1 vaut de 1 à 17, 0,4 à 8 % d'un composé polyhydroxylé, 9,0 à 21,0 % d'un hydroxyde de métal alcalin, 0,05 à 2,0 % d'un sel de magnésium, 44,0 à 84,95 % d'eau, et un tensioactif du groupe des alkyl-, aryl- ou alkylarylsulfonates, caractérisée en ce qu'elle contient 5,0 à 20 % d'un silicate de métal alcalin, et (b) un dispersant anionique du groupe des sels de métal alcalin d'un acide alkyl-, aryl- ou alkylaryldisulfonique, et en ce qu'elle est exempte de composés du type peroxyde.
2. Composition selon la revendication 1, caractérisée en ce que, comme composant (a), elle contient un mélange de composés monomères et oligomères, qui répondent à la formule
Figure imgb0044
où Y2 représente l'hydrogène ou -CO-R1, R1 représente un groupe alkyle comportant de 1 à 4 atomes de carbone et m2 vaut de 1 à 15.
3. Composition selon la revendication 2, caractérisée en ce que, comme composant (a), elle contient un mélange de composés monomères et oligomères, qui répondent à la formule
Figure imgb0045
où R2 représente un groupe méthyle ou éthyle et m3 vaut de 1 à 13.
4. Composition selon la revendication 2, caractérisée en ce que, comme composant (a), elle contient un mélange de composés monomères et oligomères qui répondent à la formule
Figure imgb0046
où Y3 représente l'hydrogène ou un groupe acétyle, et m4 vaut de 1 à 4.
5. Composition selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, comme composant (a), elle contient un composé oligomère de formule
Figure imgb0047
où Y1 représente l'hydrogène ou -CO-T1, R1, X1 et T1 représentent chacun, indépendamment, un groupe alkyle de 1 à 4 atomes de carbone, et n1 vaut de 1 à 16.
6. Composition selon la revendication 5, caractérisée en ce que, comme composant (a), elle contient un composé oligomère de formule
Figure imgb0048
où Y2 représente l'hydrogène ou -CO-R1, R1 représente un groupe alkyle comportant de 1 à 4 atomes de carbone et n2 vaut de 1 à 14.
7. Composition selon la revendication 6, caractérisée en ce que, comme composant (a), elle contient un composé oligomère de formule
Figure imgb0049
où R2 représente un groupe méthyle ou éthyle et n3 vaut de 1 à 12.
8. Composition selon la revendication 6, caractérisée en ce que, comme composant (a), elle contient un composé oligomère de formule
Figure imgb0050
où Y3 représente l'hydrogène ou un groupe acétyle, et n4 vaut de 1 à 3.
9. Composition selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, comme composant (a), elle contient un composé monomère de formule
Figure imgb0051
où Y1 représente l'hydrogène ou -CO-T1, et R1 et T1 représentent chacun un groupe alkyle de 1 à 4 atomes de carbone.
10. Composition selon la revendication 9, caractérisée en ce que, comme composant (a), elle contient un composé monomère de formule
Figure imgb0052
où Y2 représente l'hydrogène ou -CO-R1, et R1 représente un groupe alkyle de 1 à 4 atomes de carbone et R2 représente un groupe méthyle ou éthyle.
11. Composition selon la revendication 10, caractérisée en ce que, comme composant (a), elle contient un composé monomère de formule
Figure imgb0053
où R2 représente un groupe méthyle ou éthyle.
12. Composition selon la revendication 10, caractérisée en ce que, comme composant (a), elle contient un composé monomère de formule
Figure imgb0054
où Y3 représente l'hydrogène ou un groupe acétyle.
13. Composition selon la revendication 1, caractérisée en ce que, comme composé polyhydroxylé, elle contient un composé de ce type comportant au moins deux groupes hydroxyle.
14. Composition selon la revendication 13, caractérisée en ce que, comme composé polyhydroxylé, elle contient un composé de ce type de formule
Figure imgb0055
où 01 et Q2 représentent chacun un groupe -CH2OH, CHO ou COOM, M représente l'hydrogène ou un métal alcalin, et q vaut un nombre entier de 2 à 5.
15. Composition selon la revendication 14, caractérisée en ce que, comme composé polyhydroxylé, elle contient un acide hydroxycarboxylique de formule
Figure imgb0056
où M et q ont les significations indiquées dans la revendication 14,
ou une lactone de cet acide hydroxycarboxylique.
16. Composition selon la revendication 15, caractérisée en ce que, comme composé polyhydroxylé, elle contient l'acide gluconique, ses sels de métal alcalin ou sa gamma-lactone.
17. Composition selon la revendication 1, caractérisée en ce que, comme silicate de métal alcalin, elle contient de l'orthosilicate de soude.
18. Composition selon la revendication 1, caractérisée en ce que, comme hydroxyde de métal alcalin, elle contient l'hydroxyde de potassium et/ou l'hydroxyde de sodium.
19. Composition selon la revendication 18, caractérisée en ce que, comme hydroxyde de métal alcalin, elle contient un mélange de potasse caustique et de soude caustique.
20. Composition selon la revendication 21, caractérisée en ce que, comme sel de magnésium, elle contient l'acétate, le sulfate ou le chlorure de magnésium.
21. Composition selon la revendication 1, caractérisée en ce que, comme composant (b), elle contient le sel disodique d'un acide alkyldisulfonique comportant 8 à 20 atomes de carbone.
22. Composition selon la revendication 1, caractérisée en ce que, comme composant (b), elle contient le sel de sodium d'un produit de condensation de 2 ou 3 moles d'un acide naphtalènemonosulfonique et 1 ou 2 moles de formaldéhyde.
23. Composition selon la revendication 1, caractérisée en ce que, comme composant (b), elle contient le sel disodique d'un acide benzyl-C8-C22-alkyl-benzimidazoledisulfonique.
24. Procédé pour la préparation de la composition selon l'une quelconque des revendications 1 à 23, caractérisé en ce que, dans une solution aqueuse (A) du composant (b) et d'un silicate de métal alcalin, on introduit la moitié de la quantité totale d'hydroxyde de métal alcalin, puis on ajoute à la solution (A) une solution aqueuse (B), qui contient le composant (a), un composé polyhydroxylé et un sel de magnésium, et enfin, on ajoute au mélange des solutions (A) et (B) la quantité restante de l'hydroxyde de métal alcalin.
25. Procédé selon la revendication 24, caractérisé en ce que le mélange de la solution (A) avec la première moitié de l'hydroxyde de métal alcalin et ensuite avec la solution (B) et enfin avec la deuxième moitié de l'hydroxyde de métal alcalin est effectué à une température d'au plus 80°C.
26. Utilisation de la composition selon l'une quelconque des revendications 1 à 23, comme activeur et stabilisant de blanchiment dans des bains aqueux qui contiennent au moins un composé peroxy, pour le pré- traitement de matières fibreuses cellulosiques.
27. Procédé de blanchiment de matières fibreuses cellulosiques, caractérisé en ce que l'on traite la matière avec un bain aqueux qui contient au moins un composé peroxy et une composition selon l'une quelconque des revendications 1 à 23.
28. Bain aqueux pour la mise en oeuvre du procédé selon la revendication 27, caractérisé en ce qu'il contient au moins un composé peroxy et une composition selon l'une quelconque des revendications 1 à 23.
EP86810313A 1985-07-19 1986-07-14 Composition aqueuse alcaline contenant des silicates pour le blanchiment de matières fibreuses cellulosiques en présence de composés "per" Expired - Lifetime EP0210132B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH3142/85 1985-07-19
CH314285 1985-07-19
CH1143/86 1986-03-21
CH114386 1986-03-21

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EP0210132A1 EP0210132A1 (fr) 1987-01-28
EP0210132B1 EP0210132B1 (fr) 1989-12-27
EP0210132B2 true EP0210132B2 (fr) 1993-04-07

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EP86810313A Expired - Lifetime EP0210132B2 (fr) 1985-07-19 1986-07-14 Composition aqueuse alcaline contenant des silicates pour le blanchiment de matières fibreuses cellulosiques en présence de composés "per"

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US (1) US4751023A (fr)
EP (1) EP0210132B2 (fr)
DE (1) DE3667806D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3739655A1 (de) * 1987-11-23 1989-06-01 Sued Chemie Ag Bleichmittelzusatz
EP0584710A3 (fr) * 1992-08-22 1995-02-01 Hoechst Ag Procédé de blanchiment de textiles.
US5464563A (en) * 1993-08-25 1995-11-07 Burlington Chemical Co., Inc. Bleaching composition
US5616280A (en) * 1993-08-25 1997-04-01 Burlington Chemical Co., Inc. Bleaching composition
AR000228A1 (es) * 1994-11-29 1997-05-28 Johnson & Son Inc S C Solución blanqueadora de lactona/peróxido un sistema blanqueador para formar la misma y método de preparación y uso de la misma
US5942481A (en) * 1997-06-12 1999-08-24 Charvid Limited Liability Co. Caustic cleaning composition having low freezing point
DE60210085T2 (de) * 2001-06-29 2006-11-09 The Procter & Gamble Company, Cincinnati Stabilitätsverstärktes persäurebleichungssystem geeignet für gewebebehandlung
WO2010025452A1 (fr) * 2008-08-29 2010-03-04 Micro Pure Solutions, Llc Procédé de traitement de fluides contenant du sulfate d’hydrogène
WO2017029657A1 (fr) 2015-08-14 2017-02-23 Stratasys Ltd. Formulation de matériau de support et procédés de fabrication additive utilisant celle-ci
DE102018123454A1 (de) * 2018-09-24 2020-03-26 Henkel Ag & Co. Kgaa Reduzierte Haarschädigung während der Blondierung durch Einsatz von einem biologisch abbaubaren Komplexbildner

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Publication number Priority date Publication date Assignee Title
US4496472A (en) * 1981-12-23 1985-01-29 Ciba-Geigy Corporation Process for bleaching cellulosic fibre materials using oligomers of phosphonic acid esters as stabilizers in alkaline, peroxide-containing bleaching liquors
US4515597A (en) * 1982-12-10 1985-05-07 Ciba Geigy Corporation Magnesium complexes of oligomeric phosphonic acid esters, a process for their preparation and their use as stabilizers in alkaline, peroxide-containing bleach liquors

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US4751023A (en) 1988-06-14
EP0210132A1 (fr) 1987-01-28
EP0210132B1 (fr) 1989-12-27
DE3667806D1 (de) 1990-02-01

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