Classifications

• • 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
  • D06L4/60—Optical bleaching or brightening
  • D06L4/664—Preparations of optical brighteners; Optical brighteners in aerosol form; Physical treatment of optical brighteners

Definitions

• the present invention relates to a stable preparation of a treatment agent for textile substrates.
• it relates to a new, stable, concentrated or diluted, acid-containing liquid formulation of an optical brightener for brightening fiber materials, in particular finished products, such as e.g. Underwear and especially curtains made of synthetic fiber materials, preferably polyester fibers.
• the procedure is usually such that in water.
• Slightly soluble optical brighteners are applied to the textile material by means of a pull-out process or, in particular, by a padding process, and the material is then heat-set at temperatures of over 100 ° C.
• the problem specified for lightening made-up textile materials also applies to the dyeing or finishing of these materials with e.g. Antimicrobials, softening agents, UV adsorbers, pigments, plasticizers or dirt-repellent agents.
• the object of the invention is therefore to provide a new application system find that allows finished textile goods to be finished, dyed or, in particular, brightened at room temperature.
• Components (a), (b), (c), (d), (e) and (f) can be present as individual compounds or as mixtures.
• Preferred preparations contain components (a), (b), (c), (d) and (e) - or in particular all the components (a), (b), (c), (d), (e) and ( f).
• the organic solvents which can be considered as component (a) are preferably those which are volatile, water-insoluble or only water-soluble to a limited extent and at the same time can form an organophilic or organic liquid phase.
• Restricted water solubility means one that can reach up to 15% by weight. However, water solubility of less than 1.0% and especially 0.1% is preferred, i.e. at room temperature at most 10 or 1 gram of solvent should dissolve in one liter of water.
• solvents which form a second phase in water are: alcohols with at least 4 carbon atoms, such as, for example, n-butanol, isobutanol, secondary butanol, pentanols, hexanols, trimethylhexanol, heptanols, octanols, benzyl alcohol, phenetol, phenoxyethanol, chlorophenoxyethanol, phenylglycol , Cyclopentanol, cyclohexanol; aromatic aldehydes, such as benzaldehyde or furfural; Ethers such as diisopropyl ether, ethylene glycol dibutyl ether or diethylene glycol diethyl ether; Esters of an aliphatic or aromatic carboxylic acid, such as, for example, acetic acid esters, such as 2-ethylhexyl acetate, isopropyl acetate, methyl iso
• solvents with a flash point above 40 ° C, preferably above 50 ° C which are non-toxic and do not smell strongly or at least have a pleasant smell and which can be easily and completely removed, such as e.g. aliphatic hydrocarbons; Alkylbenzenes, e.g. Trimethylbenzene, methylethylbenzene or ethylbenzene; Hexanols, 2-ethylhexanol, oleyl alcohol, benzyl alcohol, phenoxyethanol, acetic acid esters, e.g.
• Ethyl butyl ketone diisobutyl ketone, methyl isoamyl ketone or isobutyl heptyl ketone; Ethylene glycol dibutyl ether, e.g. Ethylene glycol n-butyl tert-butyl ether or ethylene glycol di-tert-butyl ether, perchlorethylene or mixtures thereof.
• Ethylene glycol dibutyl ether e.g. Ethylene glycol n-butyl tert-butyl ether or ethylene glycol di-tert-butyl ether, perchlorethylene or mixtures thereof.
• Preferred solvents (a) are aliphatic hydrocarbons (flash point above 50 ° C., boiling point 175-260 ° C.), perchlorethylene, diethyl malonate, diethyl succinate, benzyl alcohol, phenoxyethanol, butyl benzoate or mixtures thereof.
• the solvents that dissolve the carrier medium which usually form a second phase in water, are only necessary for the even application of the carrier to the lipophilic substrate. After application, they are rather superfluous and should either evaporate or remain in the rinse water.
• the carrier medium (b) can be liquid or solid or can also consist of a combination of solid and liquid carrier substances.
• Under liquid carrier media are organic, lipophilic liquids with extremely low vapor pressure ( ⁇ 1 mm at 150 ° C), e.g. so-called plasticizers or plasticizers.
• Glycerol triesters such as triacetin, phosphoric acid esters are particularly advantageous; acyclic (aliphatic) dicarboxylic acid esters, e.g. higher adipates, such as dioctyl adipate, mono- or diesters of phthalate, furthermore fatty acid esters or epoxy plasticizers.
• the ester fraction of the phthalic acid esters is preferably derived from aliphatic alcohols having 1 to 22 carbon atoms.
• Dimethyl phthalate, diethyl phthalate, dibutyl phthalate or di-2-ethylhexyl phthalate, di-3,5,5-trimethylhexyl phthalate, dioctyl phthalate or diisononyl phthalate are particularly suitable.
• Particularly preferred among these are the diesters of phthalic acid with alkanols having 1 to 9 carbon atoms.
• Suitable phthalic esters of fatty alcohols having 6 to 22 carbon atoms especially stearyl alcohol or C S -C 22 alfolene, and alkylene glycols or alkylene glycol monoalkyl ethers are also very advantageous.
• the Alfolen are linear primary alkanols.
• Phthalic diesters of the formula are preferred in which R is an aliphatic hydrocarbon radical having 6 to 22 carbon atoms, advantageously alkyl or alkenyl each having 6 to 22 Carbon atoms, preferably 12 to 18 carbon atoms, of V and V 2 of a hydrogen or methyl and the other hydrogen, Z is hydrogen or alkyl having 1 to 4 carbon atoms, in particular methyl or ethyl and n is 1 to 4, preferably 2 or 3.
• the ester group COOR can be in the o-, m- or p-position. It is preferably in the o-position and thus forms the o-phthalic diester.
• R preferably denotes alkyl having 8 to 22 carbon atoms, in particular 12 to 18 carbon atoms and V and V each being hydrogen.
• Z is primarily hydrogen.
• the amounts of phthalic diesters used are advantageously between 2 and 30 percent by weight, preferably 3 to 20 percent by weight, based on the weight of the preparation.
• the carrier material is preferably solid and lipophilic. It should expediently dissolve the treatment agent (c) or, if (c) is insoluble, be able to hold it in fine dispersion.
• the carrier medium preferably dissolves component (c) used according to the invention and is itself dissolved in solvent (a).
• a suitable carrier medium is selected in accordance with the type of treatment agent to be used and in accordance with the intended use of the preparation according to the invention.
• the carrier medium (b) used in the preparation according to the invention generally serves as a solid solution medium and, in particular if the treatment material (c) is not soluble in (a) and (b) as a binder for the treatment material, furthermore, if appropriate, simultaneously as a finishing agent (softening agent, dirt-repellent agent, finishing agent) for the textile material to be treated.
• a finishing agent softening agent, dirt-repellent agent, finishing agent
• Organosoluble synthetic resins such as e.g. Petroleum hydrocarbon resins, polyterpene resins, ester diol alkoxylates, ketone resins, polyamide resins, sulfonamide resins, silicone resins, isobutyraldehyde-formaldehyde resins, melamine-formaldehyde resins; Homopolymers and copolymers of acrylic acid, methacrylic acid, acrylic acid esters, methacrylic acid esters, acrylamide, methacrylamide, ethylene, vinyl butyral, vinyl chloride, vinylidene chloride, vinyl alcohol, vinyl toluene, styrene, a-methyl styrene, vinyl acetate, vinyl acetate / vinyl laurate, furthermore vinyl acetal / vinyl acetate / vinyl alcohol terpolymers Polyolefins, polyepoxides, polyamides, polyaminoamides, polyurethanes, polyhy
• the amounts of synthetic resins used are advantageously between 0.5 and 40 percent by weight, preferably 5 and 25 percent by weight, based on the weight of the preparation.
• phthalic acid monoesters which are obtained by esterification of o-phthalic acid with a fatty alcohol of preferably 10 to 22 carbon atoms are also particularly suitable as component (b).
• Preferred phthalic acid monoesters have a softening point of at least 50 ° C.
• carboxylic acid esters are phthalic acid monostearyl esters, phthalic acid monobehenyl esters and monoesters of phthalic acid and a C 10 -C 14 fatty alcohol mixture, such as, for example, the alfols.
• the phthalic acid monoesters are preferably also used in combination with component (e) and in particular with stearic acid.
• the amounts of the phthalic acid monoesters used are advantageously between 2 and 20 percent by weight, preferably 3 and 15 percent by weight, based on the weight of the entire preparation.
• the phthalic acid monoesters are not only used as component (b), but they also serve to improve the washability, for example by alkaline washing, of the equipment applied according to the invention.
• optical brighteners (white toners) and dyes come as treatment agents (component (c)) which are sparingly soluble or insoluble in water.
• these treatment agents can be used individually or in combination. Poor to insoluble is to be understood as a solubility of less than 0.05% at room temperature.
• Treatment agents which are particularly preferred according to the invention are optical brighteners which are sparingly soluble in water and which are preferably used for synthetic fibers, e.g. Polyamide fibers, polyacrylonitrile fibers and especially polyester fibers are used.
• the optical brighteners can belong to any brightener class.
• they are coumarins, triazolcoumarins, benzocoumarins, oxazines, pyrazines, pyrazolines, diphenylpyrazolines, stilbenes, styrylstilbenes, triazolylstilbenes, bisbenzoxazolylethylenes, stilbenes-bis-benzoxazoles, phenylstilbenzoxazoles, thiophene-bis-benzoxazole, benzophenazazolines, benzophenazinazoles, benzophenazazoles, , Furan-bis-benzimidazoles and naphthalimides.
• optical brighteners or of optical brighteners with suitable blue to violet-colored shading dyes can also be used according to the invention.
• the optical brighteners can also be used in combination with lipophilized white pigments, the white pigments being used in thermoplastics, e.g. Polyester or polyamide are embedded and present in finely divided form.
• antimicrobials such as e.g. halogenated hydroxydiphenyl ether and moth protection agents, e.g. based on urea or especially 5-phenylcarbamoyl barbituric acid compounds and / or pyrethroids such as permethrin or cypermethrin.
• Component (d) is water-soluble and preferably also soluble in solvent (a). However, it can also only be dispersed in the solvent medium (a).
• water-soluble acids with a pK value of 1 to 6 are particularly preferred as component (d).
• Examples are aliphatic monocarboxylic acids having 1 to 5 carbon atoms such as formic acid, acetic acid, propionic acid, butyric acid, acrylic acid, methacrylic acid, dimethacrylic acid, halogenated acetic acid such as monochloroacetic acid, dichloroacetic acid or trifluoroacetic acid, hydroxyacetic acid, glycolic acid or "lactic acid; cycloaliphatic monocarboxylic acids such as cyclohexane carboxylic acid; araliphatic carboxylic acids such as phenylacetic acid; aromatic monocarboxylic acids such as benzoic acid, p Na htoeklare, salicylic acid, m- or p-hydroxybenzoic acid or nicotinic acid; aliphatic di- or tricarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, citric acid, malic acid, maleic acid,
• the acids mentioned can also be mixed with acid or acid hydrolyzing salts of such acids, e.g. the corresponding ammonium salts or the corresponding alkali metal salts and also with other water-soluble acidic or neutral inorganic salts, such as e.g. Potassium hydrosulfate, sodium hydrosulfate, ammonium bisulfate, diammonium sulfate, diammonium phosphate, disodium hydrophosphate, sodium dihydrophosphate or potassium dihydrophosphate can be used.
• the acid or acid hydrolyzing salts can be used instead of the free acids. It is particularly advantageous to use the stronger of the aliphatic carboxylic acids as component (d), i.e.
• Mono- or dicarboxylic acids with at most 6 carbon atoms such as formic acid, acetic acid, mono- or dichloroacetic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid or mixtures thereof.
• the preferred acids are formic acid, acetic acid or the dicarboxylic acid mixture of succinic acid, glutaric acid and adipic acid.
• Acidic phosphoric acid esters such as e.g. the above-mentioned phosphoric acid mono- and / or dialkyl esters.
• the amount of acid used as component (d) generally depends on the strength of the acid, ie the degree of dissociation of the acid. In general, amounts of 3 to 15 percent by weight, preferably 5 to 10 percent by weight, based on the overall preparation, have proven successful.
• the acid (d) serves above all to adjust the pH of the aqueous liquors produced using the preparations according to the invention, the pH of these liquors generally being 2 to 6 and preferably 3.0 to 5.5.
• the addition rate of the acid component (d) to the preparation according to the invention markedly increases the rate of extraction of these new formulations.
• higher degrees of whiteness are obtained as a result of intense fluorescence.
• component (d) is added separately to the aqueous application bath instead of the preparation according to the invention.
• the water-insoluble carboxylic acids which are possible as optional components (e) are, in particular, fatty acids which advantageously have 8 to 24, preferably 12 to 22 carbon atoms and can be unsaturated or preferably saturated, such as, for example, the caprylic, pelargon, Caprin, laurin, myristine, palmitin, stearin, arachine, coconut fat (C 10 -C 16 ), tallow fat, behen, lignocerin, decene, dodecene, tetradecene, hexadecene, oil , Linoleic, Linolenic, Ricinolic, Eicosenic, Docosenic, Hiragonic, Eläostearic acid, Licanic, Parinaric, Arachidonic or Clupanodonic acid.
• fatty acids which advantageously have 8 to 24, preferably 12 to 22 carbon atoms and can be unsaturated or preferably saturated, such as, for example, the caprylic,
• component (s) water-insoluble carboxylic acids which can be used as component (s) according to the invention are abietic acid, anisic acid, gallic acid, cinnamic acid, phthalic acid or trimellitic acid. In the foreground of interest are component (s) lauric acid, palmitic acid, behenic acid or in particular stearic acid or stearin.
• Component (e) is preferably used in combination with the neutral resins used as component (b). In certain cases you can the carboxylic acids of component (e) are also suitable as carrier medium (b).
• Component (e) like the phthalic acid monoesters, serves in particular to improve the washability by alkaline washing of the equipment applied according to the invention.
• the amounts of the water-difficultly soluble carboxylic acids (component (s)) are expediently between 2 and 20% by weight, preferably 4 to 12% by weight, based on the total weight of the preparation.
• the preparations according to the invention may contain water as a polar solvent (f) or a water-miscible organic solvent.
• a polar solvent f
• a water-miscible organic solvent Such an addition serves to improve the distribution of the preparation when used in aqueous media, that is to say to distribute the droplets of the organic phase which are formed more finely, so that they do not coalesce too quickly.
• water-miscible organic solvents are aliphatic C 1 -C 3 alcohols, such as methanol, ethanol or the propanols; Alkylene glycols, such as ethylene glycol or propylene glycol; Monoalkyl ethers of glycols, such as, for example, ethylene glycol monomethyl, ethyl or butyl ether and diethylene glycol monomethyl or ethyl ether; Ketones such as acetone and diacetone alcohol; Ethers, such as diisopropyl ether, diphenyl oxide, dioxane, tetrahydrofuran, also tetrahydrofurfuryl alcohol, pyridine, acetonitrile, N-methylpyrrolidone, y-butyrolactone, N, N-dimethylformamide, N, N-dimethylacetamide, tetramethylurea or tetramethylene sulfone. Mixtures of the solvents mentioned can also
• Acid phosphoric acid esters such as e.g. Phosphoric acid mono- or dialkyl esters, the alkyl constituents of which contain 1 to 12, preferably 3 to 8, carbon atoms.
• the preparation according to the invention can additionally contain sequestering agents and / or small amounts of anionic, cationic, amphoteric or nonionic surfactants.
• Suitable sequestering agents or chelating compounds are inorganic complex-forming compounds, such as, for example, water-soluble polyphosphates, polymetaphosphates or pyrophosphates and preferably their alkali metal salts or magnesium salts, and organic complex-forming compounds such as basic nitrogen compounds which contain at least two nitrogen-bonded, optionally further substituted phosphonymethyl or carboxymethyl groups contain.
• nitrogen compounds are aminoalkylene acetic acids, aminocycloalkylene acetic acids and aminoalkylene phosphonic acids, N-sulfoalkanaminophosphonic acids, such as, for example, nitrilotriacetic acid, ethylenediaminotetraacetic acid, ⁇ -hydroxyethyl-ethylenediaminotriesiacetic acid, cyclohexylenediamine triethyl acid, 1-diphosphonic acid, N-sulfoethane-1-amino-ethane-1,1-diphosphonic acid, 1-hydroxy-3- amino-propane-1,1-diphosphonic acid, ethylenediamino-tetra (methylene-phosphonic acid), diethylene-triamino-penta (methylene-phosphonic acid), hexamethylenediamino-tetra (methylene-phosphonic acid) and the water-soluble salts, for example sodium salts or magnesium salts of these acids.
• organic complex-forming substances are e.g. Polycarboxylic acids containing hydroxyl groups such as citric or gluconic acid and water-soluble homopolymers of acrylic acid or maleic acid, especially polymaleic anhydride and copolymers of acrylic acid with methacrylic acid, methacrylonitrile, acrylic acid esters, methacrylic acid esters and copolymers of maleic acid and styrene, maleic acid and a vinyl ether or maleic acid and preferably a vinyl ester or maleic acid their water-soluble alkali metal or ammonium salts.
• Polycarboxylic acids containing hydroxyl groups such as citric or gluconic acid and water-soluble homopolymers of acrylic acid or maleic acid, especially polymaleic anhydride and copolymers of acrylic acid with methacrylic acid, methacrylonitrile, acrylic acid esters, methacrylic acid esters and copolymers of maleic acid and styrene, maleic acid and a vinyl ether
• sequestrants are nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, gluconic acid and their salts.
• Preferred sequestrants are alkali metal hexametaphosphates and especially sodium hexametaphosphate.
• the amounts used in which the sequestering agents are added to improve the stabilization of the preparation are advantageously between 1 and 10 percent by weight, preferably 2 to 6 percent by weight, based on the weight of the preparation.
• Preferred surfactants are nonionic or cationic surfactants.
• the non-ionic surfactants are primarily used to unstably emulsify the organic phase.
• the anionic surfactants are preferably acidic derivatives of alkylene oxide adducts, for example containing acidic ether groups or preferably ester groups of organic or inorganic acids, preferably sulfated addition products of alkylene oxides, especially ethylene oxide and / or propylene oxide or styrene oxide onto aliphatic hydrocarbon radicals with a total of at least 4, preferably at least 12 Organic hydroxyl, carboxyl, amino and / or amido compounds having carbon atoms, such as, for example higher fatty alcohols, fatty acids, fatty amines, fatty acid amides or alkylphenols or mixtures of these substances.
• the acidic ethers or esters can be used as free acids or salts, e.g. Alkali metal, alkaline earth metal, ammonium or amine salts are present.
• Preferred anionic surfactants are alkyl aryl sulfonates with a straight or branched alkyl chain with at least 6 carbon atoms in the alkyl part, e.g. Nonyl or dodecylbenzenesulfonates or diisobutylnaphthalenesulfonates such as sulfonates of dicarboxylic acid esters, e.g. Dioctyl sulfosuccinate.
• the cationic surfactants can contain, for example, amino, imino, quaternary ammonium or immonium, tertiary phosphino, quaternary phosphonium or sulfonium groups, furthermore thioronium or guanidinium groups as basic substituents.
• Preferred basic substituents are tertiary amino groups and especially quaternary ammonium groups. These preferably contain aliphatic, cycloaliphatic or araliphatic groups as N-substituents. The N-substituents can also form five- to eight-membered, especially six-membered nitrogen heterocycles.
• Lower alkyl generally represents those groups or group components which have 1 to 5, in particular 1 to 3, carbon atoms, such as, for example, Methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl or amyl.
• Particularly preferred quaternary ammonium compounds are n-dodecyloxymethyl-trimethylammonium chloride, n-dodecyl-trimethylammonium chloride and especially N-cocosyl-N, N-dimethyl-N-benzylammonium chloride or N-cocosyl-N, N-di-2-hydroxyethyl-N-benzylammonium chloride.
• cationic surfactants are quaternary polyammonium polymers, as described in German Offenlegungsschriften 2,657,582, 2,824,743, 2,840,785 and 2,857,180.
• cationic surfactants are monoamines or polyamines with 2 or more basic nitrogen atoms, preferably 2 to 5, which amines have at least one polyglycol ether chain and at least one lipophilic substituent (for example alkenyl or alkyl each having 8 to 22 carbon atoms) and can be partially or completely quaternized.
• amphoteric surfactants are Monamines or polyamines with 2 or more basic nitrogen atoms, preferably 2 to 5, which amines have at least one acidic, etherified or esterified polyglycol ether chain corresponding to each basic nitrogen atom and at least one lipophilic substituent and may also be partially or completely quaternized.
• amphoteric surfactants are the monosulfuric esters of addition products of 2 to 15 moles of ethylene oxide with 1 mole of fatty amine or fatty amine mixtures, e.g. Tallow fatty amine, particularly preferred.
• the nonionic surfactants are expediently alkylene oxide addition products of 1 to 50 mol of alkylene oxide, for example ethylene oxide and / or propylene oxide, on 1 mol of an aliphatic monoalcohol having at least 6 carbon atoms, preferably 8 to 22 carbon atoms, of a trihydric to hexavalentic aliphatic alcohol having 3 up to 6 carbon atoms, a phenol optionally substituted by alkyl, benzyl or phenyl or a fatty acid with 8 to 22 carbon atoms.
• Block polymers of ethylene oxide and propylene oxide are also preferably used. These block polymers preferably correspond to the formulas or and can have a molecular weight of 2,000 to 10,000.
• the ethylene oxide content ( ml + m 2 or m) is 10 to 85 weight percent and the propylene oxide content (y or y 1 + y 2 ) is 15-90 weight percent.
• nonionic surfactants the addition products of 2 to 15 moles of ethylene oxide with 1 mole of fatty alcohol or fatty acid (each with 8 to 18 carbon atoms) or alkylphenols with 4 to 12 carbon atoms in the alkyl part are particularly preferred as emulsifiers.
• the anionic, amphoteric and nonionic surfactants are preferably used in an amount of 0.1 to 1 wt .-%, based on the entire preparation, while the cationic surfactants up to 15 wt .-%, but preferably up to a maximum of 3 wt. -% can be present.
• lipophilized pigments which are unreactive or not very reactive can also be used as auxiliaries with or without surfactants.
• examples of such pigments are: talc, titanium dioxide, zinc oxide, aluminum hydroxide, barium sulfate, sodium aluminum silicate, zinc sulfide, chalk; Clays such as kaolin; as well as organic pigments, e.g. Urea-formaldehyde or melamine-formaldehyde condensation products.
• white pigments which are obtained by coating with a polymer containing a brightener, e.g. Polyester, lipophilized and at the same time tinted white.
• the preparations according to the invention can be prepared by simple stirring, if appropriate with gentle heating of the components (a), (b), (c) and (d) mentioned and if appropriate (e), (f) and / or surfactants, homogeneous mixtures being obtained be that are stable in storage at room temperature.
• preparations according to the invention expediently represent stable liquid formulations which, depending on the form of application, can be used undiluted or diluted in the form of solutions, components (a) and (f) being suitable as solvents. Pre-blended with water or water-soluble organic or inorganic acids, they can be used as a two-phase liquid system.
• the new formulations can be used for the optical brightening of a wide variety of synthetic semisynthetic or natural organic fiber materials, which may be in the form of shaped articles such as threads, fibers, flakes or nonwovens.
• the preparations according to the invention are preferably suitable for treatment, in particular for optically brightening organic fiber material and, above all, synthetic fiber material, as a result of which an improved whiteness is achieved thanks to the addition of acid.
• the fiber material which can be optically brightened with the preparations according to the invention are, for example Chemical fibers from natural polymers (i) of vegetable origin, e.g. cellulose fibers such as viscose, acetate and triacetate fibers and vegetable protein fibers and (ii) animal origin such as animal protein fibers.
• vegetable origin e.g. cellulose fibers such as viscose, acetate and triacetate fibers and vegetable protein fibers
• animal origin such as animal protein fibers.
• synthetic fibers made from synthetically derived polymers such as polycondensate fibers (polyester, polyurea and polyamide fibers), polymer fibers (polyamide, polyacrylonitrile, modacrylic, polypropylene, polyvinyl acetal, polyvinyl chloride, polyvinylidene chloride, polyfluoroethylene fibers), polyaddition fibers (such as polyurethane) .
• synthetically derived polymers such as polycondensate fibers (polyester, polyurea and polyamide fibers), polymer fibers (polyamide, polyacrylonitrile, modacrylic, polypropylene, polyvinyl acetal, polyvinyl chloride, polyvinylidene chloride, polyfluoroethylene fibers), polyaddition fibers (such as polyurethane) .
• Linear polyester fibers are to be understood as synthetic fibers which e.g. can be obtained by condensation of terephthalic acid with ethylene glycol or of isophthalic acid or terephthalic acid with 1,4-bis (hydroxymethyl) cyclohexane, and also copolymers of terephthalic and isophthalic acid and ethylene glycol.
• the substrates to be treated according to the invention can also be made from conventional natural fiber materials, such as be made from cotton, hemp, linen, jute, ramie and silk or especially wool.
• the fiber materials can also be used as a mixed fabric among themselves or with other fibers, e.g. Mixtures of polyacrylonitrile / polyester, polyamide / polyester, polyester / wool, polyester / cotton or polyester / viscose can be used.
• the cellulose component should, however, advantageously not predominate in terms of quantity.
• the textile material to be treated can be in various stages of processing.
• the following can be considered: loose material, knitwear such as knitted or woven fabrics, yarn in the form of a wrap or muff.
• Ready-made products e.g. Treated curtains or underwear.
• inventive preparations are the treatment liquors, such as brightening baths or moth repellent formulations added, moving between 1 and 40 weight percent, preferably 5 to 25 weight percent, based on the weight of the sub s t ra t it, or between 0.1 and 100 g, preferably 0.5 and 25 g per liter of treatment liquor.
• the treatment liquors can also contain other additives and auxiliary substances, e.g. Contain bleaches, oxidizers, light stabilizers, acids or acid hydrolyzing salts, antioxidants, thickeners, fillers and / or finishing agents.
• auxiliary substances e.g. Contain bleaches, oxidizers, light stabilizers, acids or acid hydrolyzing salts, antioxidants, thickeners, fillers and / or finishing agents.
• the treatments are advantageously carried out from an aqueous liquor using the exhaust process.
• the liquor ratio can accordingly be chosen within a wide range, e.g. 1: 4 to 1: 100, preferably 1:20 to 1:70.
• the application bath expediently has a pH of 2 to 6, preferably 3.0 to 5.5.
• the temperature at which the substrate is treated according to the invention is generally in the range from 10 to 96 ° C., preferably 15 to 40 ° C.
• the lightening step according to the invention can be combined with a prewash.
• the substrate is treated with an aqueous liquor containing a conventional detergent before the lightening process, and then rinsed carefully.
• the process according to the invention gives substrates which have the desired equipment.
• the curtain contains and has a pH of 4.5-5.
• the curtain is then centrifuged and air dried. A pure white curtain with a dry, slightly stiff handle is obtained. The curtain glows intensely blue and white from UV light.
• the pH values of the treatment liquors determined in Examples 2 and 3 are between 4.5 and 5.5.
• acetic acid instead of acetic acid, another acid, e.g. Formic acid, lactic acid or sulfamic acid can be used.
• Formic acid lactic acid or sulfamic acid
• polyester curtain one made of polyamide 6 or 6,6 fibers or of cellulose acetate, polyacrylonitrile, polyvinyl chloride or polypropylene fibers is treated in the same way in the aqueous washing liquor, remarkable, uniform results also result on these substrates Whiteness improvements.
• EXAMPLE 8 If the procedure is as described in Example 7, but using the same amounts of a preparation which contains 5% of the disodium salt of ethylenediaminetetraacetic acid instead of 5% sodium hexametaphosphate, a very pure curtain is likewise obtained after drying.
• EXAMPLE 11 If the procedure is as described in Example 7, but using the same amounts of a preparation which contains 7% of the dicarboxylic acid mixture instead of 5% and 3% of the sodium salt of diethylenetriaminepentaacetic acid instead of 5% sodium hexametaphosphate, a very large amount is also obtained after drying sheer curtain.

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• 1983
  • 1983-08-03 US US06/519,931 patent/US4559150A/en not_active Expired - Fee Related
  • 1983-08-05 EP EP83810349A patent/EP0103539A1/fr not_active Withdrawn

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