EP0210132A1 - 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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Publication number
EP0210132A1
EP0210132A1 EP86810313A EP86810313A EP0210132A1 EP 0210132 A1 EP0210132 A1 EP 0210132A1 EP 86810313 A EP86810313 A EP 86810313A EP 86810313 A EP86810313 A EP 86810313A EP 0210132 A1 EP0210132 A1 EP 0210132A1
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Prior art keywords
component
composition according
formula
alkyl
hydrogen
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EP86810313A
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German (de)
English (en)
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EP0210132B2 (fr
EP0210132B1 (fr
Inventor
Albert Stehlin
Christian Guth
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Novartis AG
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Ciba Geigy 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
    • C11D3/16—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, alkaline, silicate-containing compositions of a monomeric to oligomeric phosphonic acid ester, a polyhydroxy compound, a magneaium salt or magnesium oxide and an anionic dispersant, and their use for bleaching cellulosic fiber materials in the presence of e.g. Hydrogen peroxide.
  • U.S. Patent 4,515,597 discloses an alkaline, peroxide-containing, optionally silicate-containing composition of an oligomeric phosphonic acid ester, a magnesium salt, a polyhydroxy compound and optionally a non-ionic or anionic wetting agent or dispersant, e.g. an alkyl, aryl or alkaryl monosulfonate, which are used for bleaching cellulosic fiber materials.
  • a non-ionic or anionic wetting agent or dispersant e.g. an alkyl, aryl or alkaryl monosulfonate
  • compositions which may contain an alkyl, aryl or alkaryl monosulfonate, have one at high pH values of ⁇ 14 and in particular at higher alkali concentrations (for example from 9 percent caustic potash and / or caustic soda, based on the total weight of the composition) insufficient storage stability.
  • the monomeric compounds generally correspond to the formula wherein Y 1 is hydrogen or -CO-T I and R 1 and T 1 independently of one another each represent alkyl having 1 to 4 carbon atoms.
  • Preferred monomeric compounds correspond to the formula wherein Y 2 is hydrogen or -CO-R 1 and R 1 is alkyl having 1 to 4 carbon atoms and Rz is methyl or ethyl and in particular of the formula wherein R 2 has the meaning given.
  • the monomeric compounds of the formula are of particular importance correspond in which Y 3 is hydrogen or acetyl.
  • preferred oligomeric compounds of the formula correspond wherein Y 1 is hydrogen or -CO-T 1 , R 1 , X 1 and T 1 independently of one another are each alkyl with 1 to 4 carbon atoms and n l 1 to 16, preferably of the formula wherein Y 2 is hydrogen or -CO-R 1 , R 1 is alkyl having 1 to 4 carbon atoms and n 2 is 1 to 14 and in particular of the formula wherein Rz is methyl or ethyl and n 3 is 1 to 12.
  • Such oligomeric phosphonic acid esters of the formula (6) and their preferred embodiments of the formulas (7) and (8) are described, for example, in US Pat. No. 4,515,597.
  • oligomeric compounds of the formula are of particular importance correspond in which Y 3 is hydrogen or acetyl and n 4 is 1 to 3, especially 2.
  • Preferred mixtures of monomeric and oligomeric compounds which are used as component (a) of the composition according to the invention correspond to the formula wherein Y 2 is hydrogen or -CO-R 1 , R 1 is alkyl having 1 to 4 carbon atoms and m z 1 to 15 and in particular of the formula wherein R z is methyl or ethyl and m 3 is 1 to 13.
  • component (a) a mixture of monomeric and oligomeric compounds is of primary interest, that of the formula correspond in which Y 3 is hydrogen or acetyl and m 4 is 1 to 4, especially 1 and 3.
  • mixtures of the monomeric and oligomeric compounds of the type indicated are known per se and are prepared by known methods.
  • 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 in the aqueous composition according to the invention in the presence of an alkali metal hydroxide as component (d) to give the corresponding monomeric compounds.
  • 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. 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.
  • Hydroxycarboxylic acids of the formula are further preferred
  • M and q have the meanings given, or a lactone of these hydroxycarboxylic acids.
  • hydroxycarboxylic acids are, for example, gluconic acid and its alkali metal salts, preferably the potassium or in particular sodium salt and also the y-lactone of gluconic acid.
  • Component (b) is also described in U.S. Patent 4,515,597.
  • Component (b) also acts as a complexing agent in bleaching liquors for pretreating cellulose-containing fiber materials. This complex formation is also ensured in bleaching liquors with pH values above 11.
  • Component (b) is generally used as a solid substance.
  • the alkali metal silicates as component (c) are generally water-soluble. Above all, sodium water glass comes into consideration, which has a preferred SiO z 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 silicate are used in particular as component (c).
  • Component (c) enables longer treatment times in bleaching liquors for the pretreatment of cellulose-containing fiber materials.
  • Potassium hydroxide or, in particular, the less expensive sodium hydroxide are particularly suitable as alkali metal hydroxide for component (d).
  • Mixtures of potassium hydroxide and sodium hydroxide are particularly suitable with regard to the homogeneity of the composition to be used as component (d).
  • Component (d) is preferably used in the undiluted state and in amounts of not less than 9%, based on the total weight of the composition. Accordingly, solid caustic potash, especially solid caustic soda and very particularly a mixture of solid caustic potash and solid caustic soda, is of primary interest for component (d), the weight ratio (caustic soda): (caustic potash) generally being 1: 0.01 to 1 : 2, especially 1: 0.05 to 1: 0.25.
  • the addition of component (d) gives strongly alkaline compositions which have a pH of 2 14.
  • the alkalinity of the composition when adding higher amounts of component (d) is determined by the concentration of alkali hydroxide.
  • Magnesium salts which are preferred as component (s) of the composition according to the invention are, for example, the acetate, especially the sulfate or its heptahydrate and in particular the chloride or its hexahydrate.
  • Component (e) is generally used as a solid, with solid magnesium chloride hexahydrate being of primary interest. As indicated in US Pat. No. 4,515,597, component (e) with component (a) forms a water-soluble magnesium complex which acts as a bleach stabilizer works.
  • the presence of the magnesium complex of components (a) and (e) has the effect of maintaining it over a long period of time, or at least only a reduced decrease in the original content of per compound, for example hydrogen peroxide, in the bleaching liquors which contain the composition according to the invention.
  • Suitable anionic dispersants for component (f) are, in particular, the potassium or, in particular, sodium salts of an alkyl disulfonic acid, aryl disulfonic acid or alkaryldieulfonic acid, which in the undiluted state e.g. is used as a powder or paste or as an aqueous, at least 40 percent by weight, preferably 40 to 95 percent by weight solution.
  • the alkyl radical of the 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.
  • Aryl disulfonic acid is primarily a derivative of naphthalene monosulfonic acid, which is preferably present as a reaction product with formaldehyde, 2 or 3 moles of naphthalenesulfonic acid being generally used per 1 or 2 moles of formaldehyde.
  • An example is methylene-bls (2,2'-naphthalene-7,7'-sodium sulfonate) in the form of its aqueous, 80 to 95 percent by weight solution.
  • the u.a. Suitable alkaryl disulfonic acids 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. 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. a 1-benzyl-2-heptadecyl-benzimidazole-disulfonic acid disodium salt, which is mainly used in powder form.
  • the alkali metal salts of the disulfonic acids mentioned as component (f) are anionic dispersants which increase the storage stability of the concentrated compositions according to the invention in the high pH values of from 2: 14, in particular the higher alkali concentrations (for example from 9 percent potassium hydroxide and / or hydrate, based on the total weight of the composition) ensure.
  • the preparation of the composition according to the invention is generally carried out by adding half of the total amount of component (d) to an aqueous solution (A) of components (c) and (f), then adding an aqueous solution to solution (A) Solution (B), which contains components (a), (b) and (e) and finally the mixture of solutions (A) and (B) with the remaining amount of component (d).
  • the compounds of the formulas (2) to (9) or their mixtures of the formulas (1), (10), (11) or (12) as component (a) of the solution (B) are replaced by the remaining amount of the component ( d) in the corresponding alkali metal salts, for example the potassium and / or sodium salts transferred.
  • the temperature of the reaction mixture increases automatically, if necessary, e.g. must be cooled from outside at temperatures above 80 ° C.
  • the procedure is preferably such that mixing solution (A) with the first half of component (d) and then with solution (B) and finally with the second half of component (d ) at a temperature of at most 80 ° C, preferably 60 to 70 ° C.
  • the procedure described has the essential advantage that the addition of component (d) in two portions does not result in any undesired precipitation during the production process.
  • the solution (A) from components (c) and (f) and solution (B) from components (a), (b) and (e), which are generally present as aqueous solutions can be kept in stock thanks to their excellent storage stability and can be processed at any time into the compositions according to the invention by adding component (d) in the manner described.
  • 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, alkali metal peroxysulphates or, above all, alkali metal peroxysulphates, the potassium and in particular sodium peroxysulphate or peroxysulphate being preferred.
  • Sodium peroxysulfate (Na 2 S 2 O 8 ) is particularly preferred, which is generally used as a solid, ie 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 agents or deaerating 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 suitable as wetting agents or detergents.
  • Preferred anionic surfactants are, for example, alkaryl monosulfonates, fatty acid condensation products, protein cleavage products or their salts and especially alkyl monosulfate salts and alkyl benzene monoeulfonic acids with 12 to 22 Koh Oil atoms in the alkyl radical.
  • Preferred nonionic surfactants are, for example, adducts of alkylene oxides, especially propylene and especially ethylene oxide and alkylphenols with, for example, 4 to 12 carbon atoms in the alkyl radical, especially fatty acid amides and especially fatty alcohols, with adducts of ethylene oxide and fatty alcohols being particularly preferred and as a mixture with the The focus of interest is on alkyl monosulfates of the stated type. Silicone surfactants or silicone oils are suitable as further components in these mixtures.
  • 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. higher alcohols, in particular 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 treatment materials generally belong to the styryl and stilbene series, such as Distyrylarylenes, diaminostilbenes, ditriazolylstilbenes, phenylbenzoxazolylstilbenes, stilbene naphthotriazoles and dibenzoxazolylstilbenes.
  • Optical brighteners of the distyrylbiphenyl or bistriazinylaminostilbene type which contain sulfonic acid groups, e.g.
  • Sulfonated distyrylbiphenyl and bistriazinyl derivatives in particular the bis (phenylamino-morpholino-s-triazinyl) -stilbene disulfonic acids present as alkali metal salts, especially as potassium or preferably as sodium salts.
  • alkali metal salts especially as potassium or preferably as sodium salts.
  • These are preferably used as commercially available aqueous, about 20 to 30 percent by weight liquid formulations, if appropriate.
  • the bleaching liquors contain an alkali metal hydroxide, especially potassium or in particular sodium hydroxide, preferably as a concentrated, about 30 percent by weight solution or as a solid caustic potash or especially caustic soda.
  • the aqueous bleaching liquors contain 0.5 to 15.0, preferably 1 to 12.5% of the aqueous composition according to the invention, 0.2 to 5, preferably 0.7 to 3.5 percent of the per compound, 0 to 1 or 0 , 1 to 1, preferably 0.1 to 0.5 percent of the wetting agent or detergent, 0 to 0.5 or 0.05 to 0.5 percent of the defoaming or deaerating agent, 0 to 0.1 or 0, 01 to 0.1 percent of the optical brightener and 0 to 1 or 0.1 to 1, preferably 0.2 to 0.7 percent of an alkali metal hydroxide, based on the total weight of the bleaching liquor.
  • the application process for bleaching cellulose-containing fiber materials using the compositions according to the invention is generally carried out by first applying the bleaching liquor to the fiber material, as a rule, for example by immersion, padding and preferably by padding in e.g. 10 to 60 ° C, but preferably at room temperature (15 to 25 ° C), the liquor absorption after squeezing is about 50 to 120, preferably 90 to 110 percent by weight.
  • the fiber material is usually subjected to a so-called nasal bearing process in the wet state, in which the material is rolled up in an airtight manner, if necessary in a plastic film, and e.g. is stored 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 be carried out in so-called long liquors at a liquor ratio of, for example, 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, ie take place under atmospheric pressure in conventional apparatus, for example a jigger or a reel runner.
  • the treatment up to 150 ° C, preferably 105 to 140 ° C under pressure in so-called high-temperature equipment (HT equipment) can be carried out.
  • 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 e.g. 2.5 bar at higher temperatures, e.g. up to 150 ° C, if the treatment time is kept so short that fiber damage is excluded.
  • the fiber materials are then generally rinsed thoroughly with hot water at around 90 to 98 ° C and then with warm and finally with cold water, if necessary with e.g. Neutralized acetic acid and then dehydrated and dried preferably at elevated temperatures (e.g. up to 150 ° C).
  • the cellulosic material to be treated can be in a wide variety of processing stages, e.g. as loose material, yarn, woven 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. those made from regenerated cellulose, e.g. Cellulose and viscose, those made from native cellulose, e.g. Hemp, linen, jute and especially cotton and as synthetic fibers those made of polyacrylonitrile and especially polyester and polyamide.
  • regenerated cellulose e.g. Cellulose and viscose
  • native cellulose e.g. Hemp, linen, jute and especially cotton
  • synthetic fibers those 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 for being treated according to the invention, with cotton fabrics and knitted fabrics being of primary interest. With e.g. 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 notable for their shell freedom, their good rewettability, their low ash content and, above all, their high degree of whiteness.
  • the cellulose or the cellulose portion of the bleached material also shows no damage or no significant degradation in the degree of cellulose polymer dissipation (DP grade, DP - average polymerization).
  • DP grade, DP - average polymerization degree of cellulose polymer dissipation
  • component (c) silicates, especially water glass
  • the 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.
  • a raw cotton fabric is impregnated in the padding process with an aqueous bleaching liquor containing 25 g of the aqueous composition according to Example 1, 1.6 g of pentadecane-1-sulfonic acid sodium salt per liter, 0.5 g of an adduct of 4 parts of ethylene oxide and 1 mole of a mixture contains from decyl and lauryl alcohol and 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 tissue is shell-free and has an excellent rewettability of 2.5 s / 1 cm geemäsa AIN 53924.
  • the increase in the degree of bleached fabric compared to 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)). You get -38 as the value of the raw fabric compared to +58 as the value of the bleached fabric.
  • 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 components (a) and (e)
  • the hydrogen peroxide contained in the liquor largely decomposes. In this case, the residual peroxide content after the bleaching process is only 2%.
  • a raw cotton fabric is treated in a pull-out process at a 1:40 liquor ratio for 15 minutes at 90 ° C. in an aqueous bleaching liquor containing 12 g of the aqueous composition according to Example 1, 2 g of sodium hydroxide 0.3 g of pentadecane-1 in 1 liter sulfonic acid sodium salt contains 0.1 g of an adduct of 4 moles of ethylene oxide and 1 mole of a mixture of decyl and lauryl alcohol and 20 ml of an aqueous, 35% hydrogen peroxide solution.
  • the fabric is then rinsed, neutralized, dewatered and dried as indicated in Example 10.
  • 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%.
  • a raw cotton fabric is impregnated by padding with an aqueous bleaching liquor containing 25 g per liter of the composition according to Example 1,
  • the bleached fabric is achalen-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 whiteness of the treated blended fabric is increased by the bleaching process from 0 to 55 CIBA-GEIGY white degrees.
  • the hydrogen peroxide content of the steamed fabric is still 58% of the original value after the treatment.
  • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (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)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
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
CH314285 1985-07-19
CH3142/85 1985-07-19
CH1143/86 1986-03-21
CH114386 1986-03-21

Publications (3)

Publication Number Publication Date
EP0210132A1 true EP0210132A1 (fr) 1987-01-28
EP0210132B1 EP0210132B1 (fr) 1989-12-27
EP0210132B2 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584710A3 (fr) * 1992-08-22 1995-02-01 Hoechst Ag Procédé de blanchiment de textiles.
WO2020064270A1 (fr) * 2018-09-24 2020-04-02 Henkel Ag & Co. Kgaa Endommagement réduit des cheveux pendant la décoloration au moyen d'un agent complexant biodégradable

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* 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
US5616280A (en) * 1993-08-25 1997-04-01 Burlington Chemical Co., Inc. Bleaching composition
US5464563A (en) * 1993-08-25 1995-11-07 Burlington Chemical Co., Inc. Bleaching composition
ATE213012T1 (de) * 1994-11-29 2002-02-15 Johnson & Son Inc S C Lacton/peroxid-bleichlösung, ein bleichsystem zur bildung dieser lösung, sowie ein verfahren zur bereitung und verwendung dieser lösung
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
EP3334582B1 (fr) 2015-08-14 2022-05-18 Stratasys Ltd. Formulation de matériau de support et procédés de fabrication additive utilisant celle-ci

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082823A1 (fr) * 1981-12-23 1983-06-29 Ciba-Geigy Ag Procédé de blanchiment de matières fibreuses au moyen d'oligomères d'esters d'acides phosphoniques comme stabilisants dans des bains de blanchiment alcalins contenant des peroxydes
EP0112801A1 (fr) * 1982-12-10 1984-07-04 Ciba-Geigy Ag Complexes de magnésium d'acides phosphoniques oligomères, leur procédé de préparation et leur utilisation comme stabilisants dans des bains de blanchiment contenant des péroxydes alcalins

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082823A1 (fr) * 1981-12-23 1983-06-29 Ciba-Geigy Ag Procédé de blanchiment de matières fibreuses au moyen d'oligomères d'esters d'acides phosphoniques comme stabilisants dans des bains de blanchiment alcalins contenant des peroxydes
EP0112801A1 (fr) * 1982-12-10 1984-07-04 Ciba-Geigy Ag Complexes de magnésium d'acides phosphoniques oligomères, leur procédé de préparation et leur utilisation comme stabilisants dans des bains de blanchiment contenant des péroxydes alcalins

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584710A3 (fr) * 1992-08-22 1995-02-01 Hoechst Ag Procédé de blanchiment de textiles.
WO2020064270A1 (fr) * 2018-09-24 2020-04-02 Henkel Ag & Co. Kgaa Endommagement réduit des cheveux pendant la décoloration au moyen d'un agent complexant biodégradable
CN112739317A (zh) * 2018-09-24 2021-04-30 汉高股份有限及两合公司 通过使用生物可降解络合剂在漂白期间毛发损伤的降低
US11583482B2 (en) 2018-09-24 2023-02-21 Henkel Ag & Co. Kgaa Reduced hair damage during blonding through use of a biodegradable complex former

Also Published As

Publication number Publication date
EP0210132B2 (fr) 1993-04-07
EP0210132B1 (fr) 1989-12-27
US4751023A (en) 1988-06-14
DE3667806D1 (de) 1990-02-01

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