Detergent for strengthening textile structure
Alpha-substituted compounds in detergents improve tensile strength and shape retention of textiles by stabilizing fibers during washing, addressing the loss of strength in fabrics and enhancing their durability.
Patent Information
- Application Number
- EP2025173439
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-06-10
- Filing Date
- 2025-04-30
- Publication Date
- 2025-12-17
AI Technical Summary
Textile fabrics experience a loss of tensile strength during washing due to mechanical and chemical stresses, leading to potential damage and reduced lifespan, necessitating a solution that enhances fiber strength without altering the washing process.
Incorporation of alpha-substituted compounds in detergents, specifically those following the general formula R2-C(O)-CH(X)-R1, where R1 or R2 represents a straight-chain or branched alkyl group with 1 to 15 carbon atoms, and X is a functional group, to improve fiber and textile properties.
The detergents significantly enhance the tensile strength and shape retention of washed textiles, particularly wool and cotton fibers, thereby extending the lifespan of clothing and reducing environmental impact.
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Abstract
Description
[0001] The invention relates to detergents comprising specific alpha-substituted compounds.
[0002] The invention further relates to the use of the detergent to improve the fiber properties of textile fabrics washed with it, in particular to reduce the loss of tensile strength of textile fabrics, such as wool and / or cotton fibers, during the washing process, as well as a method for reducing the loss of tensile strength of textile fabrics during the washing process, in which washing is carried out with a detergent containing specific alpha-substituted compounds.
[0003] In the dynamic world of fast fashion, the demand for sustainable practices has become indispensable. Washing clothes affects the lifespan of textiles and not only influences the individual consumer experience but must also be evaluated from an environmental perspective.
[0004] Textile fabrics lose fiber strength over their lifespan. This can occur through wear, for example due to friction, stretching, abrasion, and repeated stress, as well as through environmental influences. Textile fabrics can also be stressed during the washing process by factors such as mechanical forces or chemical influences.
[0005] In extreme cases, a loss of fiber or tensile strength can result in damage to the textiles.
[0006] Washing textiles less frequently can reduce the loss of tensile strength. However, a solution for strengthening textile fibers that does not interfere with or significantly alter the necessary washing process is desirable.
[0007] The search for a way to increase or stabilize the fiber strength or tensile strength of textile fabrics is therefore of crucial importance when it comes to extending the lifespan of clothing and thus reducing environmental impact and increasing consumer satisfaction.
[0008] International patent application WO 03 / 083204 discloses the use of polycarboxylic acids or their derivatives, catalysts and thermoplastic elastomers in fabric softener formulations to improve the dimensional stability of textile fabrics.
[0009] Surprisingly, it was found that detergents based on specific alpha-substituted compounds lead to a significant improvement in fiber and textile properties during a washing process.
[0010] The present invention therefore relates in a first embodiment to a detergent which contains - based on its total weight - 0.000001 - 2.0 wt.% of at least one alpha-substituted compound of the general formula (I) R 2-< C(O)-CH(X)-R 1< (I) , wherein one of the residues R 1< or R 2< represents H and the other represents a straight-chain or branched, saturated or unsaturated alkyl group with 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH 2 , -Cl, -Br, -I or the following groups: -O-(CH 2 ) n -CH 3 , where n represents the numbers 1, 2, 3 or 4, and -O-(CH 2 ) m -OH , where m represents the numbers 1, 2 or 3.
[0011] Detergents according to the first subject matter of the invention give washed textiles significantly improved fiber and textile properties, in particular improved tensile strength and shape retention.
[0012] The subject matter of the invention and preferred embodiments are characterized by the following statements: 1. Detergent containing - based on its total weight - 0.000001 - 2.0 wt% of at least one alpha-substituted compound of the general formula (I) R 2< -C(O)-CH(X)-R 1< (I), wherein one of the substituents R 1< or R 2< represents H and the other represents a straight-chain or branched, saturated or unsaturated alkyl group having 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH 2 , -Cl, -Br, -I or the following groups: -O-(CH 2 ) n -CH 3 , wherein n represents the numbers 1, 2, 3 or 4, and -O-(CH 2 ) m -OH , wherein m represents the numbers 1, 2 or 3. 2. Detergent according to statement 1, wherein in formula (I) one of the residues R1< or R2< represents H or a group -(CH2)o-CH3, where o represents the numbers 3, 4, 5, 6, 7, 8, 9 or 10, and X represents a hydroxyl group. 3.Detergent according to any of the preceding statements, containing as an alpha-substituted compound of formula (I) alpha-hydroxyoctanal, alpha-hydroxyoctanone, or mixtures thereof. 4. Detergent according to any of the preceding statements, containing at least one surfactant in an amount of 1 to 40% by weight, based on the total weight of the detergent. 5. Detergent according to any of the preceding statements, containing at least one anionic surfactant. 6. Detergent according to any of the preceding statements, containing at least one anionic surfactant selected from the group consisting of linear or branched alkylbenzenesulfonates (i) and / or alkyl ether sulfates (ii) and / or alpha-olefin sulfonates (iii). 7. Detergent according to any of the preceding statements, containing at least one linear or branched alkylbenzenesulfonate and at least one alkyl ether sulfate. 8.Detergent according to any of the preceding statements, containing at least one anionic surfactant in an amount of 1 to 15% by weight, based on the total weight of the detergent. 9. Detergent according to any of the preceding statements, containing at least one non-ionic surfactant. 10. Detergent according to any of the preceding statements, containing at least one non-ionic surfactant selected from the group consisting of alkoxylated fatty alcohols, alkoxylated fatty acid alkyl esters, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ethers, amine oxides, alkyl polyglucosides, and mixtures thereof. 11. Detergent according to any of the preceding statements, containing at least one non-ionic surfactant selected from the group consisting of fatty alcohol ethoxylates. 12. Detergent according to any of the preceding statements, containing at least one non-ionic surfactant selected from C12-18 alcohol ethoxylates with 2, 3, 4, 5, 6, or 7 EO units. 13.Detergent according to one of the preceding statements, containing at least one non-ionic surfactant in an amount of 0.1 to 30% by weight, based on the total weight of the detergent. 14.Detergents according to any of the preceding statements, containing at least one further ingredient, wherein the at least one further ingredient is selected from builders, bleaching agents, bleaching catalysts, bleaching activators, enzymes, electrolytes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, silicone oils, soil-release polymers, anti-graying agents, anti-shrinkage agents, anti-crease agents, antimicrobial agents, non-aqueous solvents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, phobic and impregnating agents, skin conditioning agents, swelling and slip-resistant agents, plasticizing components, UV absorbers, and mixtures thereof; and wherein the further ingredient is present in an amount of 0.0001 to 30% by weight, based on the total weight of the detergent. 15.Detergent according to any one of the preceding statements, wherein the agent is in solid, liquid, or gel form, preferably in liquid, aqueous form, and / or in unit dose form. 16. Use of a detergent according to any one of statements 1 to 15 for improving the fiber properties of textile fabrics washed therewith. 17. Use of a detergent according to any one of claims 1 to 15 for reducing the loss of tensile strength of textile fabrics during the washing process. 18. Use of a detergent according to any one of claims 1 to 15 for reducing the loss of tensile strength of wool and / or cotton fibers during the washing process. 19.Use of compounds according to the general formula (I) R 2< -C(O)-CH(X)-R 1< (I), wherein one of the substituents R 1< or R 2< represents H and the other represents a straight-chain or branched, saturated or unsaturated alkyl group having 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH 2 , -Cl, -Br, -I or the following groups: -O-(CH 2 ) n -CH 3 , where n represents the numbers 1, 2, 3 or 4, and -O-(CH 2 ) m -OH , where m represents the numbers 1, 2 or 3, for reducing the loss of tensile strength of textile fabrics during the washing process. 20.Method for reducing the tensile strength loss of textile fabrics during the washing process, wherein the textiles are washed with a detergent containing at least one alpha-substituted compound of the general formula (I) R 2< -C(O)-CH(X)-R 1< (I), wherein one of the substituents R 1< or R 2< represents H and the other represents a straight-chain or branched, saturated or unsaturated alkyl group having 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH 2 , -Cl, -Br, -I or the following groups: -O-(CH 2 ) n -CH 3 , wherein n represents the numbers 1, 2, 3 or 4, and -O-(CH 2 ) m -OH , wherein m represents the numbers 1, 2 or 3.
[0013] Suitable alpha-substituted compounds according to general formula (I) are preferably those compounds in which one of the residues R 1< , R 2< represents H and the other represents a saturated alkyl group with 1 to 15 carbon atoms.
[0014] Particularly preferred are alpha-substituted compounds of formula (I) in which one of the residues R 1< , R 2< stands for H and the other for a group -(CH 2 ) o -CH 3 , where o means the numbers 3, 4, 5, 6, 7, 8, 9 or 10.
[0015] Particularly preferred is one of the residues R 1< or R 2< representing H and the other residue representing a butyl, pentyl, hexyl, heptyl or octyl group.
[0016] In particular, one of the residues R 1< or R 2< preferably represents H and the other residue represents a hexyl group.
[0017] Alpha-substituted compounds of formula (I) in which the substituent X represents a hydroxyl or an amino group are still preferred.
[0018] In particular, X preferably represents a hydroxyl group.
[0019] According to a preferred embodiment, detergents according to the invention contain alpha-substituted compounds of the general formula (I), in which one of the residues R 1< , R 2< stands for H or for a group -(CH 2 ) o -CH 3 , where o stands for the numbers 3, 4, 5, 6, 7, 8, 9 or 10, and X represents a hydroxyl group.
[0020] Within this embodiment, alpha-substituted compounds of general formula (I) are particularly preferred, selected from alpha-hydroxybutanal, alpha-hydroxypentanal, alpha-hydroxyhexanal, alpha-hydroxyheptanal, alpha-hydroxyoctanal, alpha-hydroxybutanone, alpha-hydroxypentanone, alpha-hydroxyhexanone, alpha-hydroxyheptanone, alpha-hydroxyoctanone or mixtures thereof.
[0021] Detergents containing alpha-hydroxyoctanal, alpha-hydroxyoctanone or mixtures thereof are particularly preferred.
[0022] The detergents according to the invention contain compounds according to the general formula (I) in a weight fraction of 0.000001 - 2.0 wt.%, more preferably 0.00001 - 1.5 wt.%, particularly preferably 0.0001 - 1 wt.% and in particular 0.0005 - 0.8 wt.% of the total weight of the detergent.
[0023] Particularly preferably, detergents according to the invention contain alpha-hydroxyoctanal, alpha-hydroxyoctanone or mixtures thereof in the aforementioned amounts.
[0024] Within the scope of this invention, the term "detergents" encompasses pre-treatment agents, detergents, and conditioning agents for textiles, such as delicate detergents and post-treatment agents, as well as fabric softeners. Conditioning refers to the revitalizing treatment of textiles, fabrics, yarns, and woven materials. Conditioning is intended to impart positive properties to the textiles, such as improved softness, increased luster and color brilliance, and a reduction in wrinkling and static electricity.
[0025] The detergents according to the invention can be in solid form, for example as powder, granules, extrudate, pressed and / or melted molded body such as tablet, or in liquid form, for example as dispersion, suspension, emulsion, solution, microemulsion, gel or paste.
[0026] In a preferred embodiment of the invention, the detergents are liquid and, in particular, water-based and / or in unit dose form and contain the active ingredient(s) a) in solution. The solubility of the active ingredient(s) according to formula (I) can be further improved by the presence of surfactants.
[0027] Detergents according to the invention therefore preferably contain further components commonly found in detergents, which do not interact negatively with the aforementioned active ingredients in an unacceptable manner during storage and use.
[0028] In a preferred embodiment, detergents according to the invention contain at least surfactant in an amount of 1 to 40% by weight of the total weight of the detergent.
[0029] In a further preferred embodiment, detergents according to the invention contain at least one anionic surfactant.
[0030] The use of anionic surfactants increases the dirt removal behavior of the agents according to the invention during the washing process, without impairing the effect of the active ingredient according to formula (I).
[0031] Suitable anionic surfactants within the meaning of the present invention are, for example, those of the sulfonate and sulfate type.
[0032] Suitable surfactants of the sulfonate type include preferably C9-13 alkylbenzenesulfonates, olefin sulfonates (i.e., mixtures of alkene and hydroxyalkane sulfonates), and disulfonates, such as those obtained, for example, from C12-18 monoolefins with terminal or central double bonds by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acidic hydrolysis of the sulfonation products. Alkane sulfonates obtained from C12-18 alkanes, for example, by sulfochlorination or sulfoxidation followed by hydrolysis or neutralization, are also suitable. Likewise, esters of α-sulfofaticial acids (ester sulfonates), such as the α-sulfonated methyl esters of hydrogenated coconut, palm kernel, or tallow fatty acids, are also suitable.
[0033] Other suitable anionic surfactants are sulfated fatty acid glycerol esters. Fatty acid glycerol esters include mono-, di-, and triesters, as well as mixtures thereof, obtained by esterification of a monoglycerol with 1 to 3 moles of fatty acid or by transesterification of triglycerides with 0.3 to 2 moles of glycerol. Preferred sulfated fatty acid glycerol esters are the sulfate products of saturated fatty acids with 6 to 22 carbon atoms, such as caproic acid, caprylic acid, capric acid, myristic acid, lauric acid, palmitic acid, stearic acid, or behenic acid.
[0034] The alkali and, in particular, the sodium salts of the sulfuric acid half-esters of C12-C18 fatty alcohols, for example, from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl, or stearyl alcohol, or the C10-C20 oxo alcohols, and those half-esters of secondary alcohols of these chain lengths are preferred as alk(en)yl sulfates. Also preferred are alk(en)yl sulfates of the aforementioned chain lengths which contain a synthetic, petrochemically produced, straight-chain alkyl group and which exhibit analogous degradation behavior to the corresponding compounds based on fatty chemical raw materials. For detergent applications, the C12-C16 alkyl sulfates, C12-C15 alkyl sulfates, and C14-C15 alkyl sulfates are preferred. 2,3-Alkyl sulfates, which can be obtained, for example, as trading products from the Shell Oil Company under the name DAN®, are also suitable anionic surfactants.
[0035] Sulfuric acid monoesters of straight-chain or branched C7-21 alcohols ethoxylated with 1 to 6 moles of ethylene oxide, such as 2-methyl-branched C9-11 alcohols with an average of 3.5 moles of ethylene oxide (EO) or C12-18 fatty alcohols with 1 to 4 moles of EO, which are referred to as fatty alcohol ether sulfates, are also suitable and, within the scope of this invention, particularly preferred anionic surfactants. Other suitable anionic surfactants include the salts of alkylsulfosuccinic acid, also referred to as sulfosuccinates or sulfosuccinic acid esters, which are monoesters and / or diesters of sulfosuccinic acid with alcohols, preferably fatty alcohols and, in particular, ethoxylated fatty alcohols. Preferred sulfosuccinates contain C8-18 fatty alcohol residues or mixtures thereof. In particular, preferred sulfosuccinates contain a fatty alcohol residue derived from ethoxylated fatty alcohols, which are non-ionic surfactants when considered individually.Sulfosuccinates, whose fatty alcohol residues are derived from ethoxylated fatty alcohols with a narrowed homolog distribution, are particularly preferred. It is also possible to use alk(en)yl succinic acid with preferably 8 to 18 carbon atoms in the alk(en)yl chain or its salts.
[0036] Other suitable anionic surfactants include soaps. For example, saturated fatty acid soaps such as the salts of lauric acid, myristic acid, palmitic acid, stearic acid, hydrogenated erucic acid, and behenic acid are appropriate, as are soap mixtures derived from natural fatty acids, e.g., coconut, palm kernel, or tallow fatty acids. The anionic surfactants, including soaps, can be in the form of their sodium, potassium, or ammonium salts, as well as soluble salts of organic bases such as mono-, di-, or triethanolamine. Preferably, the anionic surfactants are in the form of their sodium or potassium salts, particularly the sodium salts. However, for the non-aqueous liquid detergents according to the invention, ammonium salts, especially salts of organic bases such as isopropylamine, are preferred.
[0037] Another class of anionic surfactants is the class of ethercarboxylic acids, accessible by reacting fatty alcohol ethoxylates with sodium chloroacetate in the presence of basic catalysts. They have the general formula: R10 < O-(CH2-CH2-O)p-CH2-COOH, where R10 < = C1-C18 and p = 0, 1 to 20. Ethercarboxylic acids are insensitive to water hardness and exhibit excellent surfactant properties.
[0038] In a preferred embodiment, the detergents according to the invention contain anionic surfactants from the group consisting of fatty alcohol sulfates and / or fatty alcohol ether sulfates and / or linear or branched alkylbenzene sulfonates and / or alpha-olefin sulfonates and / or soaps. They particularly preferably contain linear or branched alkylbenzene sulfonates i) and / or alkyl ether sulfates ii) and / or an alpha-olefin sulfonate iii), and especially preferably fatty alcohol ether sulfates as well as linear or branched alkylbenzene sulfonates.
[0039] The at least one anionic surfactant can preferably be contained in the detergents according to the invention in a weight fraction of 1 to 15 wt.%, more preferably 2 to 15 wt.% and in particular 3 to 15 wt.% of the total weight of the detergent.
[0040] In a further preferred embodiment, detergents according to the invention contain at least one non-ionic surfactant.
[0041] Preferably alkoxylated, advantageously ethoxylated and / or propoxylated, in particular primary alcohols with preferably 8 to 18 C atoms and an average of 1 to 12 mol of ethylene oxide (EO) and / or 1 to 10 mol of propylene oxide (PO) per mol of alcohol are used as non-ionic surfactants. Particularly preferred are C8-C16 alcohol alkoxylates, advantageously ethoxylated and / or propoxylated C10-C15 alcohol alkoxylates, especially C12-C14 alcohol alkoxylates, with a degree of ethoxylation between 2 and 10, preferably between 3 and 8, and / or a degree of propoxylation between 1 and 6, preferably between 1.5 and 5. The alcohol residue can preferably be linear or, more preferably, methyl-branched at the 2-position, or contain linear and methyl-branched residues in the mixture, as are commonly found in oxo alcohol residues. In particular, however, alcohol ethoxylates with linear residues from alcohols of native origin with 12 to 18 carbon atoms, e.g.,from coconut, palm, tallow, or oleyl alcohol, and preferably with an average of 2 to 8 EO per mole of alcohol. Preferred ethoxylated alcohols include, for example, C12-14 alcohols with 3 or 4 EO, C9-11 alcohols with 7 EO, C13-15 alcohols with 3, 5, 7, or 8 EO, C12-18 alcohols with 3, 5, or 7 EO, and mixtures thereof, such as mixtures of C12-14 alcohol with 3 EO and C12-18 alcohol with 5 EO. The stated degrees of ethoxylation and propoxylation represent statistical averages, which may be whole numbers or fractions for a particular product. Preferred alcohol ethoxylates and propoxylates exhibit a narrow range of homologs (NRE / NRP). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohols with 14 EO, 25 EO, 30 EO, or 40 EO.
[0042] Also suitable are alkoxylated amines, advantageously ethoxylated and / or propoxylated, in particular primary and secondary amines with preferably 1 to 18 C atoms per alkyl chain and on average 1 to 12 mol ethylene oxide (EO) and / or 1 to 10 mol propylene oxide (PO) per mol amine.
[0043] The end-capped alkoxylated fatty amines and fatty alcohols have proven to be particularly advantageous, especially for use in non-aqueous formulations according to the invention. In the end-capped fatty alcohol alkoxylates and fatty amine alkoxylates, the terminal hydroxyl groups are etherified by C1-C20 alkyl groups, preferably methyl or ethyl groups.
[0044] Furthermore, alkyl glycosides of the general formula RO(G) x can also be used as nonionic surfactants, e.g., as compounds, especially with anionic surfactants, where R represents a primary straight-chain or methyl-branched, particularly 2-position methyl-branched, aliphatic residue with 8 to 22, preferably 12 to 18 carbon atoms, and G is the symbol representing a glucose unit with 5 or 6 carbon atoms, preferably glucose. The degree of oligomerization x, which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; preferably, x is between 1.2 and 1.4.
[0045] Another class of preferred nonionic surfactants, used either as the sole nonionic surfactant or in combination with other nonionic surfactants, are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated fatty acid alkyl esters, preferably with 1 to 4 carbon atoms in the alkyl chain, in particular fatty acid methyl esters. So-called gemini surfactants are also suitable. These are generally understood to be compounds that possess two hydrophilic groups and two hydrophobic groups per molecule. These groups are usually separated from each other by a so-called "spacer." This spacer is typically a carbon chain that should be long enough to allow the hydrophilic groups sufficient distance to act independently of each other.Such surfactants are generally characterized by an unusually low critical micelle concentration and the ability to significantly reduce the surface tension of water. In exceptional cases, however, the term gemini surfactants is used to refer not only to dimeric but also to trimeric surfactants.
[0046] Suitable gemini surfactants include, for example, sulfated hydroxy mixed ethers or dimer alcohol bis- and trimer alcohol tris-sulfates and ether sulfates. End-capped dimer and trimer mixed ethers are particularly characterized by their bi- and multifunctionality. These end-capped surfactants possess good wetting properties and are low-foaming, making them especially suitable for use in machine washing or cleaning processes. Gemini polyhydroxy fatty acid amides or poly-polyhydroxy fatty acid amides can also be used.
[0047] Other suitable surfactants are polyhydroxy fatty acid amides of the following formula, In the formula, R 4< CO represents an aliphatic acyl group with 6 to 22 carbon atoms, R 3< represents hydrogen, an alkyl or hydroxyalkyl group with 1 to 4 carbon atoms, and [Z] represents a linear or branched polyhydroxyalkyl group with 3 to 10 carbon atoms and 3 to 10 hydroxyl groups. Polyhydroxy fatty acid amides are well-known substances that can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine, or an alkanolamine, followed by acylation with a fatty acid, a fatty acid alkyl ester, or a fatty acid chloride.
[0048] The group of polyhydroxy fatty acid amides also includes compounds of the following formula, In R5<, R6< represents a linear or branched alkyl or alkenyl group with 7 to 12 carbon atoms, R6< represents a linear, branched, or cyclic alkyl group or an aryl group with 2 to 8 carbon atoms, and R7< represents a linear, branched, or cyclic alkyl group or an aryl group or an oxy-alkyl group with 1 to 8 carbon atoms, wherein C1-4 alkyl or phenyl groups are preferred, and [Z] represents a linear polyhydroxyalkyl group whose alkyl chain is substituted with at least two hydroxyl groups, or alkoxylated, preferably ethoxylated or propoxylated derivatives of this group. [Z] is preferably obtained by reductive amination of a reduced sugar, for example glucose, fructose, maltose, lactose, galactose, mannose, or xylose.The N-alkoxy- or N-aryloxy-substituted compounds can then be converted into the desired polyhydroxy fatty acid amides, for example, by reaction with fatty acid methyl esters in the presence of an alkoxide as a catalyst.
[0049] For the detergents according to the invention, it has proven advantageous to use non-ionic surfactants selected from the group of alkoxylated fatty alcohols and / or alkyl glycosides.
[0050] A content of non-ionic surfactants from the group of alkoxylated fatty alcohols (fatty alcohol ethoxylates), preferably the C 12-18 alcohol ethoxylates with 2, 3, 4, 5, 6 or 7 EO units and in particular with 7 EO units, is particularly preferred within the scope of the present invention.
[0051] In a preferred embodiment, the detergents according to the invention contain non-ionic surfactants in amounts of 0.1 to 30 wt.%, more preferably 0.5 to 20 wt.%, and particularly preferably 1 to 15 wt.%, in each case based on the total product.
[0052] In a preferred embodiment of the present invention, the detergents according to the invention contain at least one further component (additive) in addition to the active ingredients already defined.
[0053] Preferably, the at least one additive is selected from the group consisting of builders, bleaching agents, bleaching catalysts, bleaching activators, enzymes, electrolytes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, silicone oils, soil-release polymers, anti-graying agents, shrinkage inhibitors, anti-crease agents, antimicrobial agents, non-aqueous solvents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, antiphobing and impregnating agents, skin conditioning agents, swelling and slip-resistant agents, plasticizing components, and UV absorbers and mixtures thereof. Further preferably, the at least one additive is present in 0.0001 to 30 wt.%, preferably 0.1 to 20 wt.%, based on the total weight of the agent.
[0054] The building materials that may be included in the detergent according to the invention include, in particular, silicates, aluminium silicates (especially zeolites), carbonates, salts of organic di- and polycarboxylic acids and mixtures of these substances.
[0055] Suitable crystalline, layered sodium silicates have the general formula NaMSi x O 2x+1 ·H 2 O, where M represents sodium or hydrogen, x is a number from 1.9 to 4, and y is a number from 0 to 20, with preferred values for x being 2, 3, or 4. Preferred crystalline layered silicates of the given formula are those in which M represents sodium and x takes the values 2 or 3. In particular, both β- and δ-sodium disilicates Na 2Si 2 O 5 • yH 2 O are preferred.
[0056] Amorphous sodium silicates with a Na₂O:SiO₂ modulus of 1:2 to 1:3.3, preferably 1:2 to 1:2.8, and particularly 1:2 to 1:2.6, which exhibit delayed dissolution and secondary washing properties, can also be used. The delayed dissolution compared to conventional amorphous sodium silicates can be achieved in various ways, for example, by surface treatment, compounding, compaction / densification, or superdrying. Within the scope of this invention, the term "amorphous" is also understood to mean "X-ray amorphous." This means that the silicates do not produce sharp X-ray reflections in X-ray diffraction experiments, as is typical for crystalline substances, but at most one or more maxima of the scattered X-rays, which have a width of several units of the diffraction angle.However, particularly good builder properties can indeed result if the silicate particles exhibit diffuse or even sharp diffraction maxima in electron diffraction experiments. This can be interpreted as the products possessing microcrystalline regions ranging in size from 10 to several hundred nm, with values up to a maximum of 50 nm and especially up to a maximum of 20 nm being preferred. Particularly preferred are densified / compacted amorphous silicates, compounded amorphous silicates, and superdried X-ray amorphous silicates.
[0057] The fine-crystalline, synthetic zeolite, which contains bound water, is preferably zeolite A and / or P. Zeolite X and mixtures of A, X and / or P are also suitable. For example, a co-crystallise of zeolite X and zeolite A (approx. 80 wt.% zeolite X), which is commercially available and preferably usable within the scope of the present invention, is also available commercially and can be preferably used within the scope of the present invention. nNa 2 O · (1 - n)K 2 O · Al 2 O 3 · (2 - 2.5)SiO 2 · (3.5 - 5.5) H 2 O n = 0.90 - 1.0 Zeolite can be described as follows: It can be used as a spray-dried powder or as an undried, stabilized suspension that is still moist from its production. If the zeolite is used as a suspension, it may contain small additions of nonionic surfactants as stabilizers, for example, 1 to 3 wt%, based on zeolite, of ethoxylated C12-C18 fatty alcohols with 2 to 5 ethylene oxide groups, C12-C14 fatty alcohols with 4 to 5 ethylene oxide groups, or ethoxylated isotridecanols. Suitable zeolites have a mean particle size of less than 10 µm (volume distribution; measurement method: Coulter counter) and preferably contain 18 to 22 wt%, and in particular 20 to 22 wt%, of bound water.
[0058] Of course, the use of commonly known phosphates as building blocks is also possible, unless such use should be avoided for ecological reasons. The sodium salts of orthophosphates, pyrophosphates, and especially tripolyphosphates are particularly suitable.
[0059] Organic building blocks that may be present in the detergent include, for example, polycarboxylic acids, which can be used in the form of their sodium salts. Polycarboxylic acids are defined as carboxylic acids that possess more than one acid function. Examples include citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, amino acids, nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), and their derivatives, as well as mixtures thereof. Preferred salts are the salts of polycarboxylic acids such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids, and mixtures thereof.
[0060] Acids themselves can also be used. Besides their builder properties, acids typically also possess acidifying properties and thus serve to adjust the pH of detergents or cleaning agents to a lower and milder value. Citric acid, succinic acid, glutaric acid, adipic acid, gluconic acid, and any mixtures thereof are particularly noteworthy in this regard. Other well-known pH regulators include sodium bicarbonate and sodium hydrogen sulfate.
[0061] Polymeric polycarboxylates are also suitable as framework materials. These include, for example, the alkali metal salts of polyacrylic acid or polymethacrylic acid, such as those with a weight-average molecular weight of 500 to 70,000 g / mol.
[0062] The molar masses given for polymeric polycarboxylates in this document are weight-average molar masses Mw of the respective acid form, which were generally determined by gel permeation chromatography (GPC) using a UV detector. The measurement was performed against an external polyacrylic acid standard, which, due to its structural similarity to the polymers under investigation, provides realistic molar mass values. Suitable polymers are, in particular, polyacrylates, preferably with a molecular mass of 2 to 20,000 g / mol. Due to their superior solubility, short-chain polyacrylates from this group, with molar masses of 2,000 to 10,000 g / mol, and especially preferably 3,000 to 5,000 g / mol, are particularly preferred.
[0063] Suitable polymers may also include substances that consist partly or entirely of units of vinyl alcohol or its derivatives.
[0064] Suitable options also include copolymeric polycarboxylates, particularly those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid. Copolymers of acrylic acid with maleic acid containing 50 to 90 wt% acrylic acid and 50 to 10 wt% maleic acid have proven especially suitable. Their weight-average molecular weight, based on free acids, is generally 2000 to 70000 g / mol, preferably 20000 to 50000 g / mol, and particularly 30000 to 40000 g / mol. The (co)polymeric polycarboxylates can be used either as aqueous solutions or, preferably, as powders.
[0065] To improve water solubility, the polymers can also contain allylsulfonic acids, such as allyloxybenzenesulfonic acid and methallylsulfonic acid, as monomers.
[0066] Particularly preferred are biodegradable polymers consisting of more than two different monomer units, for example those containing as monomers salts of acrylic acid and maleic acid as well as vinyl alcohol or vinyl alcohol derivatives, or as monomers salts of acrylic acid and 2-alkylallylsulfonic acid as well as sugar derivatives.
[0067] Other preferred copolymers are those which preferably contain acrolein and acrylic acid / acrylic acid salts or acrolein and vinyl acetate as monomers.
[0068] Other preferred structural materials include polymeric aminodicarboxylic acids, their salts, or their precursor substances. Polyaspartic acids or their salts and derivatives are particularly preferred, as they exhibit not only builder properties but also a bleach-stabilizing effect.
[0069] Other suitable framework materials are polyacetals, which can be obtained by reacting dialdehydes with polyol carboxylic acids having 5 to 7 carbon atoms and at least 3 hydroxyl groups. Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde, and mixtures thereof, and from polyol carboxylic acids such as gluconic acid and / or glucoheptonic acid.
[0070] Other suitable organic framework materials are dextrins, for example, oligomers or polymers of carbohydrates, which can be obtained by partial hydrolysis of starches. The hydrolysis can be carried out using conventional methods, such as acid- or enzyme-catalyzed processes. Preferably, the hydrolysis products have weight-average molecular weights in the range of 400 to 500,000 g / mol. A polysaccharide with a dextrose equivalent (DE) in the range of 0.5 to 40, particularly 2 to 30, is preferred, where DE is a common measure of the reducing effect of a polysaccharide compared to dextrose, which has a DE of 100. Suitable options include maltodextrins with a DE between 3 and 20, dried glucose syrups with a DE between 20 and 37, as well as so-called yellow dextrins and white dextrins with higher weight-average molecular weights in the range of 2000 to 30000 g / mol.
[0071] The oxidized derivatives of such dextrins are their reaction products with oxidizing agents capable of oxidizing at least one alcohol group of the saccharide ring to a carboxylic acid group. An oxidized oligosaccharide is also suitable. A product oxidized at C6 of the saccharide ring can be particularly advantageous.
[0072] Oxydisuccinates and other derivatives of disuccinates, preferably ethylenediamine disuccinate, are also suitable structural materials. Ethylenediamine N,N'-disuccinate (EDDS), preferably in the form of its sodium or magnesium salts, is used. Glycerol disuccinates and glycerol trisuccinates are also preferred in this context.
[0073] Other useful organic framework materials include, for example, acetylated hydroxycarboxylic acids or their salts, which may also be in lactone form and which contain at least 4 carbon atoms and at least one hydroxy group and a maximum of two acid groups.
[0074] For aesthetic reasons, however, soluble, organic building blocks, such as citric acid, are preferably used in aqueous washing or cleaning agents.
[0075] Among the compounds used as bleaching agents that yield H₂O₂ in water, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance. Other useful bleaching agents include, for example, sodium percarbonate, peroxypyrophosphates, citrate perhydrates, and H₂O₂-yielding peric acid salts or organic peracids, such as perbenzoates, peroxophthalates, diperazelaic acid, diperdodecanedioic acid, 4-phthalimidoperoxobutanoic acid, 5-phthalimidoperoxopentanoic acid, 6-phthalimidoperoxohexanoic acid, 7-phthalimidoperoxoheptanic acid, N,N'-terephthaloyl-di-6-aminoperoxohexanoic acid, and mixtures thereof. The preferred peracids include the phthalimidoperoxoalkanoic acids, especially 6-phthalimidoperoxohexanoic acid (PAP). The bleaching agent may – if present – have been formulated in particle form using inert carrier materials in a known manner; preferably, it is used in coated form.It is important that the encapsulating material releases the encapsulated bleach under the application conditions of the detergent (at higher temperatures, with a changing pH value due to dilution with water, or similar conditions). A preferred encapsulating material is one that consists at least partially of saturated fatty acids.
[0076] The amount of bleach is preferably between 0.5 and 20% by weight based on the total washing or cleaning agent.
[0077] To achieve improved bleaching effectiveness when washing at temperatures of 60 °C and below, bleach activators can be incorporated into detergents. Compounds that yield aliphatic peroxocarboxylic acids under perhydrolysis conditions can be used as bleach activators. Preferred are multiply acylated alkylenediamines, in particular tetraacetylethylenediamine (TAED), acylated triazine derivatives, in particular 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DADHT), acylated glycolurils, in particular tetraacetylglycoluril (TAGU), N-acylides, in particular N-nonanoylsuccinimide (NOSI), acylated phenolsulfonates, in particular n-nonanoyl- or isononanoyloxybenzenesulfonate (n- or iso-NOBS), carboxylic anhydrides, in particular phthalic anhydride, acylated polyhydric alcohols, in particular triacetin, ethylene glycol diacetate and 2,5-diacetoxy-2,5-dihydrofuran.
[0078] In addition to or instead of conventional bleach activators, so-called bleach catalysts can also be incorporated into liquid detergents. These substances are bleach-enhancing transition metal salts or transition metal complexes such as Mn, Fe, Co, Ru, or Mo salen complexes or carbonyl complexes. Mn, Fe, Co, Ru, Mo, Ti, V, and Cu complexes with nitrogen-containing tripod ligands, as well as Co, Fe, Cu, and Ru ammine complexes, can also be used as bleach catalysts.
[0079] If the detergent, preferably liquid, contains a bleaching agent, a bleach activator, and / or a bleaching catalyst, it is particularly advantageous that these are present in encapsulated form within the detergent. However, it is preferred that the detergent does not contain any of these ingredients.
[0080] The detergent, preferably liquid, may also contain an enzyme or a mixture of enzymes. Enzymes from the classes of hydrolases, such as proteases, (poly)esterases, lipases or lipolytic enzymes, amylases, cellulases or other glycosyl hydrolases, hemicellulase, cutinases, β-glucanases, oxidases, peroxidases, mannanases, perhydrolases, oxyreductases, and / or laccases, are particularly suitable. Within the scope of the present invention, proteases, amylases, lipases, cellulases, mannanases, laccases, tannanases, and esterases / polyesterases, as well as mixtures of two or more of these enzymes, are preferably used.
[0081] Hydrolases contribute to the removal of stains during washing, such as protein, fat, or starch stains and graying. Cellulases and other glycosyl hydrolases can also help preserve color and increase the softness of the fabric by removing pilling and microfibrils. Cellobiohydrolases, endoglucanases, and β-glucosidases (also called cellobiases), or mixtures thereof, are preferred cellulases. Since different cellulase types vary in their CMCase and avicelae activities, the desired activities can be achieved through targeted cellulase mixtures.
[0082] subtilisin-type proteases, and especially those derived from Bacillus lentus, are preferred. Enzyme mixtures are of particular interest, such as protease and amylase, protease and lipase, lipolytic enzymes, protease and cellulase, cellulase and lipase, lipolytic enzymes, protease, amylase and lipase, lipolytic enzymes, protease, lipase, lipolytic enzymes and cellulase. Mixtures containing protease and / or lipase, or mixtures containing lipolytic enzymes, are especially desirable. Examples of such lipolytic enzymes include the well-known cutinases. Suitable amylases include, in particular, α-amylases, iso-amylases, pullulanases, and pectinases.
[0083] The amount of enzyme(s) is 0.01 to 10 wt%, preferably 0.12 to about 3 wt%, based on the total weight of the agent. The enzymes are preferably used in liquid agents as enzyme liquid formulation(s). If the washing or cleaning agent contains a mixture of enzymes, at least one enzyme may be in the form of granules, encapsulated, or adsorbed onto a carrier. Highly preferred washing or cleaning agents contain cellulase; cellulase and protease; cellulase, protease, and amylase; cellulase, protease, amylase, and lipase; or cellulase, protease, amylase, lipase, and (poly)esterase.
[0084] To stabilize the enzymes, the detergents according to the invention can contain stabilizing agents such as boric acid or borates, boric acid derivatives or amino alcohols.
[0085] A wide variety of inorganic salts can be used as electrolytes. Preferred cations are the alkali and alkaline earth metals, and preferred anions are the halides and sulfates. The electrolyte content in the detergent is typically 0.1 to 5% by weight, based on the total weight of the product.
[0086] In liquid products, in addition to water as the main solvent, one or more non-aqueous solvents may also be present. Non-aqueous solvents that can be used in washing or cleaning agents include, for example, monohydric or polyhydric alcohols, alkanolamines, or glycol ethers, provided they are miscible with water within the specified concentration range.Solvents may be used that are selected from ethanol, n- or i-propanol, butanols, glycol, propane or butanediol, glycerin, diglycol, propyl or butyl diglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, dipropylene glycol monomethyl or ethyl ether, di-isopropylene glycol monomethyl or ethyl ether, methoxy, ethoxy or butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, di-n-octyl ether, and mixtures of these solvents. Non-aqueous solvents can be used in the liquid detergent in amounts between 0.5 and 30 wt.%, but preferably below 20 wt.% and particularly below 15 wt.%.
[0087] It is preferred, however, that the liquid detergent contains a polyol as a non-aqueous solvent. The polyol may, in particular, comprise glycerin, 1,2-propanediol, 1,3-propanediol, ethylene glycol, diethylene glycol, and / or dipropylene glycol. Particularly preferred is a mixture of at least two polyols in the liquid detergent. Mixtures of 1,2-propanediol and dipropylene glycol, 1,2-propanediol and diethylene glycol, or glycerin and diethylene glycol are preferred.
[0088] To bring the pH value of the liquid detergent into the neutral range, the use of pH adjusters may be advisable. All known acids or alkalis can be used for this purpose, provided their use is not prohibited for application-related, environmental, or consumer protection reasons. The amount of these adjusters typically does not exceed 10% by weight of the total formulation.
[0089] A liquid detergent or cleaning agent may contain a thickening agent. This thickening agent can include, for example, polyacrylate thickeners, xanthan gum, gellan gum, guar gum, alginate, carrageenan, carboxymethylcellulose, bentonite, Wellan gum, locust bean gum, agar-agar, tragacanth, gum arabic, pectins, polyoses, starch, dextrins, gelatin, and casein. Modified natural substances such as modified starches and celluloses, for example, carboxymethylcellulose and other cellulose ethers, hydroxyethyl and hydroxypropyl cellulose, and bean gum ethers, can also be used as thickening agents.
[0090] Examples of polyacrylic and polymethacrylic thickeners include high-molecular-weight homopolymers of acrylic acid (INCI name according to the "International Dictionary of Cosmetic Ingredients" of the "The Cosmetic, Toiletry and Fragrance Association (CTFA)": carbomer), which are cross-linked with a polyalkenyl polyether, in particular an allyl ether of sucrose, pentaerythritol, or propylene and are also known as carboxyvinyl polymers. Such polyacrylic acids include, among others... Available from 3V Sigma under the trade name Polygel ®< , e.g. Polygel DA, and from Noveon under the trade name Carbopol ®< , e.g. Carbopol ®< 940 (molecular weight approx. 4,000,000 g / mol), Carbopol ®< 941 (molecular weight approx. 1,250,000 g / mol) or Carbopol ®< 934 (molecular weight approx. 3,000,000 g / mol).Furthermore, the following acrylic acid copolymers are included: (i) copolymers of two or more monomers from the group consisting of acrylic acid, methacrylic acid and their simple esters, preferably formed with C 1-4 alkanols (INCI Acrylates Copolymer), which include, for example, the copolymers of methacrylic acid, butyl acrylate and methyl methacrylate (CAS designation according to Chemical Abstracts Service: 25035-69-2) or of butyl acrylate and methyl methacrylate (CAS 25852-37-3) and which are available, for example, from Evonik under the trade name Tego® Polymer; (ii) crosslinked high molecular weight acrylic acid copolymers, which include, for example, copolymers of C10-C30 alkyl acrylates with one or more monomers from the group consisting of acrylic acid, methacrylic acid and their simple esters formed preferably with C1-C4 alkanols (INCI Acrylates / C10-30 Alkyl Acrylate Crosspolymer) crosslinked with an allyl ether of sucrose or pentaerythritol.Other suitable thickeners based on (meth)acrylic acid (co)polymers include Carbopol ® Aqua 30 (ex Noveon) or polyacrylate thickeners, which are marketed by BASF under the trade name Sokalan ®.
[0091] The liquid washing or cleaning agents preferably have viscosities in the range of 200 to 5000 mPas, with values between 300 and 2000 mPas and especially between 400 and 1000 mPas being particularly preferred. Viscosity was determined using a Brookfield viscometer LVT-II at 20 rpm and 20°C, spindle 3.
[0092] In a preferred embodiment, the detergent contains one or more perfumes in an amount of typically up to 15 wt.%, preferably 0.01 to 5 wt.%, in particular 0.3 to 3 wt.%.
[0093] Individual odor compounds, such as synthetic products like esters, ethers, aldehydes, ketones, alcohols, and hydrocarbons, can be used as perfume oils or fragrances. However, mixtures of different odorants are preferred, as they combine to create an appealing scent. Such perfume oils can also contain natural odorant mixtures, such as those derived from plant sources.
[0094] To improve the aesthetic appearance of the detergent, it can be colored with suitable dyes. Preferred dyes, the selection of which poses no difficulty for the expert, possess high storage stability and insensitivity to the other ingredients of the detergent or cleaning agent, as well as to light, and do not exhibit significant substantivity towards textile fibers, so as not to stain them.
[0095] Examples of foam inhibitors that can be used in detergents include soaps, paraffins or silicone compounds, especially silicone oils, which may be present as emulsions.
[0096] Suitable soil-release polymers, also known as "anti-reposition agents," include, for example, non-ionic cellulose ethers such as methylcellulose and methylhydroxypropylcellulose with a methoxy group content of 15 to 30 wt.% and a hydroxypropyl group content of 1 to 15 wt.%, based on the non-ionic cellulose ether, as well as polymers of phthalic acid and / or terephthalic acid or their derivatives known from the prior art, in particular polymers of ethylene terephthalates and / or polyethylene and / or polypropylene glycol terephthalates or anionically and / or nonionically modified derivatives thereof. Suitable derivatives include the sulfonated derivatives of phthalic acid and terephthalic acid polymers.
[0097] Anti-graying agents serve to keep the dirt detached from the fiber suspended in the cleaning solution, thus preventing it from being redeposited. Water-soluble colloids, mostly of organic origin, are suitable for this purpose, such as glue, gelatin, salts of ethersulfonic acids of starch or cellulose, or salts of acidic sulfuric acid esters of cellulose or starch. Water-soluble polyamides containing acidic groups are also suitable. Furthermore, soluble starch preparations and starch products other than those mentioned above can be used, for example, degraded starch, aldehyde starches, etc. Polyvinylpyrrolidone is also usable. However, cellulose ethers such as carboxymethylcellulose (sodium salt), methylcellulose, hydroxyalkylcellulose, and mixed ethers such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylcarboxymethylcellulose, and mixtures thereof are preferred in amounts of 0.1 to 5 wt.-%, based on the total weight of the detergent, is used.
[0098] Since textile fabrics, especially those made of rayon, rayon, cotton, and their blends, can wrinkle because the individual fibers are sensitive to bending, creasing, pressing, and crushing across the fiber direction, detergents may contain synthetic wrinkle-preventing agents. These include, for example, synthetic products based on fatty acids, fatty acid esters, fatty acid amides, alkyl ol esters, alkylolamides, or fatty alcohols, which are usually reacted with ethylene oxide, or products based on lecithin or modified phosphoric acid esters.
[0099] To combat microorganisms, detergents can contain antimicrobial agents. Depending on their antimicrobial spectrum and mechanism of action, these agents are categorized as bacteriostatics and bactericides, fungistatics and fungicides, etc. Important substances from these groups include, for example, benzalkonium chlorides, alkylarylsulfonates, halogenated phenols, and phenolmercuriacetate, although the detergents according to the invention can also be formulated without these compounds altogether.
[0100] The detergents according to the invention may contain preservatives, preferably those that have no or only a low skin-sensitizing potential. Examples include sorbic acid and its salts, benzoic acid and its salts, salicylic acid and its salts, phenoxyethanol, formic acid and its salts, 3-iodo-2-propynyl butylcarbamate, sodium N-(hydroxymethyl)glycinate, biphenyl-2-ol, and mixtures thereof. Other suitable preservatives include isothiazolinones, mixtures of isothiazolinones, and mixtures of isothiazolinones with other compounds, for example, tetramethylolglycoluril.
[0101] To prevent undesirable changes to detergents and / or treated textiles caused by oxygen exposure and other oxidative processes, detergents or cleaning agents may contain antioxidants. This class of compounds includes, for example, substituted phenols, hydroquinones, catechols, and aromatic amines, as well as organic sulfides, polysulfides, dithiocarbamates, phosphites, phosphonates, and vitamin E.
[0102] Increased wearing comfort can result from the additional use of antistatic agents added to detergents. Antistatic agents increase surface conductivity, thus facilitating the dissipation of accumulated charges. External antistatic agents are generally substances with at least one hydrophilic molecular ligand and form a more or less hygroscopic film on surfaces. These mostly surface-active antistatic agents can be divided into nitrogen-containing (amines, amides, quaternary ammonium compounds), phosphorus-containing (phosphoric acid esters), and sulfur-containing (alkyl sulfonates, alkyl sulfates) antistatic agents. Lauryl (or stearyl)dimethylbenzylammonium chlorides are suitable as antistatic agents for textiles or as additives to detergents or cleaning agents, also providing a brightening effect.
[0103] To improve the rewettability of treated textiles and to facilitate ironing, silicone compounds can be used in the detergent. These also improve the rinsing properties of the detergent or cleaning agent due to their foam-inhibiting effects. Preferred silicone derivatives are, for example, polydialkyl or alkylarylsiloxanes in which the alkyl groups have one to five carbon atoms and are wholly or partially fluorinated. Preferred silicones are polydimethylsiloxanes, which may optionally be derivatized and then be amino-functionalized or quaternized, or have Si-OH, Si-H, and / or Si-Cl bonds. The viscosities of the preferred silicones at 25°C are in the range of 100 to 100,000 mPas, and the silicones can be used in amounts between 0.2 and 5% by weight, based on the total amount of detergent.
[0104] Finally, the detergent can also contain UV absorbers that adhere to the treated textile surfaces and improve the lightfastness of the fibers. Compounds exhibiting these desired properties include, for example, benzophenone compounds and derivatives with substituents in the 2- and / or 4-position that are effective through radiationless deactivation. Furthermore, substituted benzotriazoles, phenyl-substituted acrylates (cinnamic acid derivatives) with cyano groups in the 2-position, salicylates, organic nickel complexes, and natural products such as umbelliferone and the body's own urocanic acid are also suitable.
[0105] To prevent the decomposition of certain detergent ingredients catalyzed by heavy metals, substances that complex heavy metals can be used. Suitable heavy metal complexing agents include, for example, the alkali salts of ethylenediaminetetraacetic acid (EDTA) or nitrilotriacetic acid (NTA), methylglycine diacetic acid trisodium salt (MGDA), and alkali metal salts of anionic polyelectrolytes such as polymaleates and polysulfonates.
[0106] A preferred class of complexing agents are the phosphonates, which are present in the washing or cleaning agent in amounts of 0.01 to 2.5 wt.%, preferably 0.02 to 2 wt.%, and particularly 0.03 to 1.5 wt.%. These preferred compounds include, in particular, organophosphonates such as 1-hydroxyethane-1,1-diphosphonic acid (HEDP), aminotri(methylenephosphonic acid) (ATMP), diethylenetriamine-penta(methylenephosphonic acid) (DTPMP or DETPMP), and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBS-AM), which are mostly used in the form of their ammonium or alkali metal salts. Alternative complexing agents that can be used in the washing or cleaning agent are iminodisuccinates (IDS) or ethylenediamine N,N'-disuccinate (EDDS).
[0107] In the context of this invention, "aqueous" means that water is the main solvent in the detergent according to the invention. However, non-aqueous solvents may be added to it. The detergent or cleaning agent may also be in the form of an emulsion, in which solid particles can be temporarily mixed with the aqueous phase by shaking.
[0108] Preferably, the detergent according to the invention is single-phase.
[0109] The term "liquid" preferably refers to a composition that flows freely at room temperature (approx. 20 °C) and ambient pressure (approx. 1013 mbar at sea level). The terms "liquid detergent" or "liquid aqueous detergent" can also include gel-like and pasty products.
[0110] A substance, e.g., detergent, is "solid" when it exists in a solid state at room temperature (approx. 20°C) and ambient pressure (approx. 1013 mbar at sea level).
[0111] An important aspect of the invention relates to the pH value of the liquid detergent. It is essential that this value lies in the neutral range, specifically between 6 and 8.5, and preferably between 6.5 and 8. If the pH value lies outside this range, particularly at pH values greater than 8.5, the detergent can become severely cloudy, leading to phase separation.
[0112] Unless otherwise stated, where reference is made to the pH value of a product, this refers to the pH value of the washing or cleaning solution obtained with the product when dissolved in distilled water (in a weight ratio of 1:100) at 20°C.
[0113] The detergents according to the invention can be used for washing and / or cleaning textile surfaces.
[0114] Any methods known from the prior art are suitable for the production of the detergents described herein.
[0115] Washing processes, i.e., in particular processes for cleaning textiles, are generally characterized by the fact that in one or more process steps cleaning-active substances are applied to the item to be cleaned and washed off after the contact time, or that the item to be cleaned is treated in some other way with a detergent or a solution of this agent.
[0116] In various embodiments of the invention, washing processes according to the invention can utilize temperatures of up to 95°C or less, 90°C or less, 60°C or less, 50°C or less, 40°C or less, 30°C or less, or 20°C or less. These temperature specifications refer to the temperatures used in the washing steps.
[0117] In further aspects, the present invention also relates to the use of the detergent according to the invention for improving the fiber properties of textile fabrics washed with it, in particular for reducing the loss of tensile strength of textile fabrics during the washing process.
[0118] Furthermore, the present invention relates to the use of the detergent according to the invention for reducing the loss of tensile strength of wool and / or cotton fibers during the washing process.
[0119] The present invention further relates to the use of one or more active ingredients a) for reducing the loss of tensile strength of textile fabrics during the washing process, and to a method for reducing the loss of tensile strength of textile fabrics during the washing process, in which the textile fabrics are washed with a detergent which a) contains at least one alpha-substituted compound of the general formula (I) i. R 2< -C(O)-CH(X)-R 1< (I), wherein one of the substituents R 1< or R 2< represents H and the other represents a straight-chain or branched, saturated or unsaturated alkyl group having 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH 2 , -Cl, -Br, -I or the following groups: -O-(CH 2 ) n -CH 3 , wherein n represents the numbers 1, 2, 3 or 4, and -O-(CH 2 ) m -OH , wherein m represents the numbers 1, 2 or 3.
[0120] All facts, objects, and embodiments described for the detergents according to the invention are also applicable to the uses and methods described above. Therefore, explicit reference is made here to the disclosure at the relevant point, with the note that this disclosure also applies to the aforementioned uses and methods according to the invention. Examples:
[0121] 1) Composition of the detergent (amounts in [wt.%]) 1 2 3 4 Sodium laureth sulfate 2,9 2,9 2,9 2,9 C12-18 alcohol + 7 EO 3,3 3,3 3,3 3,3 Dodecylbenzenesulfonate, sodium salt 2,7 2,7 2,7 2,7 C12-18 fatty acids 0,5 0,5 0,5 0,5 NaOH solution, 50% 0,5 0,5 0,5 0,5 Polyquaternium-7 0,2 - - - 1-Hydroxyoctane-2-one* - 0,5 0,05 - Possibly other active ingredients and excipients (e.g. chelating agents, preservatives, pH adjusters, enzymes) qs qs qs qs Water ad 100 ad 100 ad 100 ad 100 * EternaLock Bond ®< 2) Tensile strength measurements
[0122] Eternalock (hydroxyoctanal or 1-hydroxyoctan-2-one) was used as the alpha-substituted compound according to formula (I) in formulations 2 and 3.
[0123] In comparison formulation 1, the commercially available and well-known textile fiber care agent Polyquaternium-7 was used.
[0124] Comparative formulation 4 contains neither Eternalock nor Polyquaternium-7.
[0125] All tensile strength loss determinations were carried out according to ISO 13934-1:2013 "Tensile properties of materials - Part 1: Determination of maximum force and elongation at maximum force using the strip method".
[0126] Market textiles were used (silk, wool (cashmere), cotton and mixed textiles - see table below) to determine the tensile strength loss of different textile compositions.
[0127] The textiles were washed in a standard washing machine under the following washing conditions: Wool: Wool program; 39 min; 30°C; 1200 rpm. Cellulose fabrics and blends: Easy-care program; 1:59 h; 40°C; 1200 rpm.
[0128] The results of the washing tests can be found in the following table: → A negative TSL value indicates a decrease in fiber strength after washing compared to new textiles. → A positive TSL value indicates an increase in fiber strength after washing compared to new textiles. → The higher the TSL value, the better: If the TSL value is positive, this means that the fiber strength after washing is even better than that of a new textile. If the TSL value is "less negative" after washing with EternaLock than with a detergent without EternaLock, this means that the loss of fiber strength is less pronounced with EternaLock than when washing with a detergent that does not contain EternaLock.
[0129] It can be seen that the tensile strength of wool fibers is improved after washing with a detergent containing EternaLock compared to a new wool fabric and compared to the reference (detergent formula without EternaLock).
[0130] It can also be seen that washing cellulose fabrics and blended textiles with a detergent containing EternaLock reduces the loss of tensile strength of these fibers and helps to strengthen or maintain these fibers.
Claims
1. Detergent containing - based on its total weight - 0.000001 - 2.0 wt.% of at least one alpha-substituted compound of general formula (I) R 2 -C(O)-CH(X)-R 1 (I), wherein • one of the residues R 1 or R 2 where H represents a straight-chain or branched, saturated or unsaturated alkyl group with 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH2, -Cl, -Br, -I or the following groups: -O-(CH2) n -CH3, where n represents the numbers 1, 2, 3 or 4, and -O-(CH2) m -OH, where m represents the numbers 1, 2 or 3.
2. Detergent according to claim 1, comprising as alpha-substituted compound according to formula (I) alpha-hydroxyoctanal, alpha-hydroxyoctanone or mixtures thereof.
3. Detergent according to any of the preceding claims, comprising at least one surfactant in an amount of 1 to 40% by weight, based on the total weight of the detergent.
4. Detergent according to any of the preceding claims, comprising at least one further component, wherein the at least one further component is selected from builders, bleaching agents, bleaching catalysts, bleaching activators, electrolytes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, complexing agents, foam inhibitors, silicone oils, soil-release polymers, anti-graying agents, anti-shrinkage agents, anti-crease agents, antimicrobial agents, solvents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, antiphobing and impregnating agents, skin-conditioning agents, swelling and slip-resistant agents, plasticizing components, UV absorbers, and mixtures thereof; and wherein the further component is present in an amount of 0.0001 to 30% by weight, based on the total weight of the detergent.
5. Detergent according to any of the preceding claims, wherein the agent is in solid, liquid or gel form, preferably in liquid aqueous form, and / or in unit dose form.
6. Use of a detergent according to any one of claims 1 to 5 for improving the fiber properties of textile fabrics washed therewith.
7. Use of a detergent according to one of claims 1 to 5 for reducing the loss of tensile strength of textile fabrics during the washing process.
8. Use of a detergent according to any one of claims 1 to 5 for reducing the loss of tensile strength of wool and / or cotton fibers during the washing process.
9. Use of compounds according to the general formula (I) i. R 2 -C(O)-CH(X)-R 1 (I), wherein • one of the residues R 1 or R 2where H represents a straight-chain or branched, saturated or unsaturated alkyl group with 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH2, -Cl, -Br, -I or the following groups: -O-(CH2) n -CH3, where n represents the numbers 1, 2, 3 or 4, and -O-(CH2) m -OH, where m represents the numbers 1, 2 or 3, for reducing the loss of tensile strength of textile fabrics during the washing process.
10. Method for reducing the loss of tensile strength of textile fabrics during the washing process, wherein textile fabrics are washed with a detergent containing at least one alpha-substituted compound of the general formula (I) i. R 2 -C(O)-CH(X)-R 1 (I), contains, wherein • one of the residues R 1 or R 2where H represents a straight-chain or branched, saturated or unsaturated alkyl group with 1 to 15 carbon atoms, the carbon chain optionally being substituted with one or more hydroxyl or amino groups, and X represents -OH, -NH2, -Cl, -Br, -I or the following groups: -O-(CH2) n -CH3, where n represents the numbers 1, 2, 3 or 4, and -O-(CH2) m -OH, where m represents the numbers 1, 2 or 3.
Citation Information
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