Mild layered detergent compositions with reduced isethionates and palm kernel oil derived structurants

Abstract

The present invention relates to a layered detergent composition having a surfactant system with a total anionic surfactant containing less than 40% by weight of isethionate therein and an amphoteric surfactant, a zwitterionic surfactant, or both. The composition is stable and has no or a reduced amount of structuring agent derived from palm kernel oil. The composition surprisingly provides excellent organoleptic and foaming characteristics and remains stable in the lamellar phase.

Description

Technical Field

[0001] This invention relates to a layered detergent composition having a reduced amount or no palm kernel oil-derived layered structuring agent. More particularly, the detergent composition comprises an anionic surfactant containing less than 40% by weight of a hydroxyethyl sulfonate, and an amphoteric surfactant, amphoteric surfactant, or both, wherein at least 60% by weight of the amphoteric and amphoteric surfactants used are each independently free of amide alkyl bridges. The detergent compositions of the present invention are surprisingly stable and suitable for formulation substantially free of at least one of sulfates, parabens, hydantoin, isothiazolinones, dioxanes, and silicone oils. The compositions also unexpectedly provide excellent foaming and sensory properties, wherein the total surfactants in the detergent composition are at least 80% by weight of an amphoteric surfactant, amphoteric surfactant, or both, and the anionic surfactant contains less than 40% by weight of a hydroxyethyl sulfonate. Background Technology

[0002] Washing compositions are commonly used to cleanse the skin and reduce shine associated with sebum produced by specialized epithelial cells called sebaceous gland cells. They are also used to minimize bacteria on the hands and face, making washing considered one of the most effective ways to prevent the spread of germs and bacteria. In fact, experts believe that regular washing throughout the day can reduce the number of consumers catching a cold by about 50%. In addition to the skin, washing compositions are routinely used on the scalp and hair, and also for cleaning household items such as countertops, windows, and clothes.

[0003] Consumers prefer gentler compositions (especially for skin and hair), and they also require compositions that are more environmentally friendly. In particular, there is a need for compositions prepared using fewer ingredients to simplify production and thus achieve more environmentally friendly manufacturing processes.

[0004] There is a growing interest in preparing detergent compositions that are both consumer-friendly and environmentally friendly. Therefore, this invention relates to layered detergent compositions having reduced amounts or no palm kernel oil-derived layered structuring agents. More specifically, the detergent composition comprises an anionic surfactant and an amphoteric surfactant, zwitterionic surfactant, or both, containing less than 40% by weight of hydroxyethyl sulfonate, wherein at least 60% by weight of the amphoteric and zwitterionic surfactants used are each independently free of (do not contain) amide alkyl bridges. The detergent compositions of the present invention are surprisingly stable and suitable for formulation substantially free of at least one of sulfates, parabens, hydantoin, isothiazolinones, dioxanes, and silicone oils. The compositions also unexpectedly provide excellent foaming and sensory properties, wherein the total surfactant in the detergent composition is at least 80% by weight of an amphoteric surfactant, zwitterionic surfactant, or both, and the anionic surfactant comprises less than 40% by weight of hydroxyethyl sulfonate.

[0005] Additional Information Attempts to prepare detergent compositions have been disclosed. Layered compositions and aerosol barrier distribution systems are described in International Application No. WO / 03017968A2.

[0006] Other attempts to prepare detergent compositions have been described. In U.S. Patent Application Publication No. US2016 / 0186095, detergent compositions comprising amine oxides, alkylbenzene sulfonates, alkyl ether sulfates, and fatty alcohol ethoxylates are described.

[0007] Other attempts to prepare washing compositions are also described. In European Patent No. EP 3971275B1, a liquid hand-washing dishwashing composition is described, which has at least 50% by weight of an anionic surfactant as an alkyl sulfate and a co-surfactant including betaine or betaine and amine oxide, as well as polypropylene glycol.

[0008] Other attempts to prepare detergent compositions have even been described. U.S. Patent No. 5,807,816 describes a light-duty cleaning composition containing alkyl sulfates, alkyl ether sulfates, betaine, amine oxides, or mixtures thereof, and alkyl polyglucosides.

[0009] Other attempts to prepare detergent compositions have been disclosed. U.S. Patent No. 7,659,235 describes a cleaning composition comprising a fatty acyl hydroxyethyl sulfonate and a liquid crystal inducer.

[0010] No additional information is provided to describe the layered detergent composition as claimed herein, which has no or reduced amounts of hydroxyethyl sulfonate and no or reduced amounts of palm kernel oil-derived layered structuring agent. Summary of the Invention

[0011] In a first aspect, the present invention relates to a layered detergent composition comprising: a) Anionic surfactants containing less than 40% by weight of hydroxyethyl sulfonate; b) Amphoteric surfactants, zwitterionic surfactants, or both; c) 0 to 5% by weight of nonionic surfactant; d) Layered structuring agents; and e) Water, in: i) The composition has a viscosity of at least 30,000 mPa-s; ii) The pH of the composition is at least 5; iii) The composition contains no more than 3% by weight of a sulfate-containing surfactant; iv) At least 60% by weight of amphoteric surfactants and / or amphoteric surfactants, each independently free of amide alkyl bridges; v) The amphoteric surfactant is at least 80% by weight of amine oxide; vi) At least 60% by weight of the zwitterionic surfactant in the washing composition has a -N + -(R)2-(C(R 1 )2) x -COO- or -N + -(R)2-(C(R 2 )2) y The hydrophilic portion of -SO3-, where each R is independently H or C. 1-3 Alkyl; each R 1 Independently H or C 1-3 Alkyl; x is an integer from 1 to 3; each R 2 Independently H, OH or C 1-4 Alkyl group, where y is an integer from 1 to 6; and vii) The layered structuring agent contains a) 0-2% by weight of C6-C 14 (Preferred C8-C) 14 Or the optimal choice is C8-C 12 a) Carboxylic acids or alcohols or their amide derivatives or b) 0-2.85% by weight of C 16 -C 20 Lactate or both, provided that a and b cannot both be 0, and if only a or b is present, a is present at least 0.4% by weight and b is present at least 0.5% by weight.

[0012] In a second aspect, the present invention relates to a method for washing or treating surfaces such as skin with the layered washing composition of the first aspect of the invention.

[0013] In a third aspect, the present invention relates to the use of an anionic surfactant comprising less than 40% by weight of hydroxyethyl sulfonate, together with an amphoteric surfactant, an amphoteric surfactant, or a combination thereof, in the preparation of a layered detergent composition substantially free of or free of palm kernel oil-derived layered structuring agents, wherein the amphoteric surfactant and the amphoteric surfactant are each independently free of at least 60% amide alkyl bridges.

[0014] All other aspects of the invention will become more apparent from the following description and examples.

[0015] As used herein, skin refers to the skin on the arms (including the armpits), face, back, feet, neck, chest, hands, legs, buttocks, and scalp (including hair). Stability means that after preparation and storage at 45°C for at least one month, preferably at least two months, the skin maintains a viscosity of at least 30,000 mPa⁻², preferably at least 35,000 mPa⁻², most preferably 35,000–345,000 mPa⁻² (or 40,000–240,000 mPa⁻² or 43,000–138,000 mPa⁻² or 44,000–75,000 mPa⁻²), wherein the viscosity is measured at 25°C using a Discovery HR-2 rheometer with a blasting plate having a 1000-micron gap and a viscosity of 0.23 s⁻¹. -1 Shear rate measurement.

[0016] A layered structuring agent derived from palm kernel oil refers to a component having a fatty portion, comprising at least 75-100% by weight (or 80-100% by weight, 90-100% by weight, 95-100% by weight, or 100% by weight) of C8-C from palm kernel oil. 14 The hydrophobic chain of the saturated hydrocarbon includes components such as lauric acid and myristic acid or their alcohol or amide derivatives. As used herein, lamellar means a layer having a surfactant arrangement in which polar head groups are aligned with water to shield fatty acid acyl chains from water, such that more than 85% (or 90 to 100% or 100%) of the total surfactant in the composition is arranged as a micelle or layer, resulting in a translucent or opaque composition, wherein the surfactant arrangement is induced by the surfactant itself, and as selected in this invention, resulting in a creamy (e.g., velvety) washing composition. As used herein, amide alkyl bridge means a group represented as -(C=O)-N(R)-Z-, where R is as previously defined, and Z is a straight-chain, branched, or cyclic alkyl group, but typically straight-chain and C... 1-8 Alkyl groups, and more typically C10. 1-4 Or C 1-3The alkyl group, and most commonly propyl, connects the polar head and hydrophobic tail of the surfactant. Furthermore, at least 60% by weight of both the amphoteric and zwitterionic surfactants used are independently free of amide alkyl bridges, preferably at least 65% by weight, and most preferably at least 70% by weight (or 77.5 to 96% by weight, 78 to 86.5% by weight, 77 to 94% by weight, 79.5 to 100% by weight, 95 to 100% by weight, 97 to 100% by weight, or 100% by weight) are independently free of such bridges.

[0017] In this invention, it has been unexpectedly discovered that anionic surfactants and amphoteric surfactants and / or amphoteric surfactants (containing at least 60% by weight of hydroxyethyl sulfonate free of amide alkyl bridges) can be used to induce or prepare stable layered detergent compositions with reduced or even no palm kernel oil-derived structuring agents. Therefore, the surfactant system and structuring agents used in this invention surprisingly produce layered detergent compositions with excellent sensory and foaming properties, and this surfactant system and structuring agent mimic the structuring of the detergent composition, which is typically observed with conventional palm kernel oil-based structuring agents at levels exceeding 4% by weight of the detergent composition. In embodiments of this invention, the detergent composition contains 0-2% by weight of C6-C 14 (Preferred C8-C) 14 Or the optimal choice is C8-C 12 a) Carboxylic acids or alcohols or their amide derivatives or b) 0-2.85% by weight of C 16 -C 20 Lactate or both, provided that a and b cannot both be 0, and if only one is present, a is present at least 0.4% by weight and b is present at least 0.4% by weight.

[0018] The layered detergent composition of the present invention is suitable for wiping or rinsing, preferably rinsing with water. Such compositions can be household care cleaning compositions (e.g., for tabletops, glass, toilets, tableware, upholstery, or laundry), but are preferably shampoos, lotions, facial cleansers, hand soaps, or personal care liquids such as liquid shower gels. In embodiments of the invention, when the layered detergent composition is used for hand applications, the composition preferably has a viscosity not exceeding 185,000 mPa⁻², or not exceeding 170,000 mPa⁻², and preferably 30,000-125,000 mPa⁻², and most preferably 30,000-115,000 mPa⁻².

[0019] The layered cleansing compositions of the present invention may optionally contain pharmaceutical or therapeutic agents, but are preferably non-therapeutic washes for cosmetic use and formulated to remove dirt, oil, etc., from surfaces including skin and hair. In a preferred embodiment, the layered cleansing composition is a personal cleansing composition, and thus a liquid shower gel for use during showering or bathing. The layered cleansing compositions of the present invention may optionally contain skin-beneficial ingredients incorporated therein, such as emollients, vitamins and / or their derivatives, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, antibacterial agents, mixtures thereof, etc. Such skin-beneficial ingredients (or agents) may be water-soluble and / or oil-soluble. If used, oil-soluble skin-beneficial agents typically constitute 2.0% by weight of the layered cleansing composition, while water-soluble skin-beneficial agents may optionally constitute 15% by weight of the cleansing composition of the present invention. Layered washing compositions typically have a pH of at least 5, or 5-8.2, or 5.65-8, or 5.7-7.75, or 5.75-7.5, or 5.8-7.25, or 6-7, or 6.15-6.85, or 6.2-6.65.

[0020] As used herein, when referring to sulfates, "substantially sulfate-free" means less than 3.0% by weight of the layered detergent composition, preferably less than 2.5% by weight, most preferably less than 2% by weight or less than 1% by weight, and even more preferably less than 0.75% by weight (or less than 0.5% by weight). In embodiments of the invention, "substantially sulfate-free" includes a detergent composition having 0.0% by weight (i.e., none) of sulfate-containing ingredients (including sulfate-based surfactants). Regarding non-sulfate-based ingredients (i.e., ingredients that are not, for example, anionic surfactants containing sulfates, such as hydantoin), "substantially sulfate-free" means less than 0.7% by weight of the detergent composition, and preferably less than 0.4% by weight, and most preferably less than 0.3% by weight (or less than 0.2% by weight, less than 0.1% by weight, or less than 0.05% by weight). As for non-sulfate-based ingredients, "substantially sulfate-free" also includes 0.0% by weight (i.e., none) of the ingredients in the detergent composition. All ingredients that can be substantially sulfate-free in the detergent compositions of the present invention, including 0.001-0.05% by weight of such ingredients, are within the scope of the invention. In yet another preferred embodiment, based on the total dioxane content in the washing composition, the washing composition of the present invention contains less than 35 ppm, preferably less than 25 ppm, most preferably less than 15 ppm of dioxane, or less than 2 ppm, or less than 1 ppm of dioxane, or 0.0 ppm of dioxane. In another embodiment, the washing composition of the present invention may contain 0.00001-0.00005% by weight of dioxane, such as 1,4-dioxane, or 0.0% by weight of 1,4-dioxane.

[0021] The term "comprising" is intended to encompass the terms "consistently composed of" and "composed of". For the avoidance of doubt and for illustrative purposes, the detergent compositions of the present invention comprising surfactants and active substances are intended to include compositions substantially composed of and composed of. All scopes defined herein are intended to include all scopes contained herein. Except in comparative operational examples, or where otherwise expressly indicated, all figures in this specification representing amounts or ratios of materials or conditions and / or physical properties and / or uses of materials should be understood to be modified by the word "about". As found herein, this disclosure is intended to cover all embodiments as multiple dependents of each other in the claims, regardless of the fact that claims may exist without multiple dependents or redundancy. Detailed Implementation

[0022] Regarding the suitable amphoteric surfactant, it comprises at least 80% by weight, preferably at least 85% by weight, and most preferably at least 90% by weight (or 90 to 100% by weight, or 94 to 100% by weight, or 94 to 98% by weight, or 100% by weight) of amine oxide, wherein at least 60% by weight of the amine oxide does not have (i.e. does not contain) the defined amide alkyl bridge, and has the following formula: R 3 -N + (R 4 )2-O-, where R 3 It is C 8-20 Alkyl, preferably C 10-18 Alkyl group, C is the most preferred. 12-18 Alkyl (or C) 12-16 alkyl), and R 4 Is it H or C? 1-6 Alkyl or C 1-4 Alkyl or C 1-3 Alkyl or C 1-2 Alkyl or -CH3. In embodiments of the invention, the amine oxide is cocoyl amine oxide, lauryl amine oxide, myristyl amine oxide, palmityl amine oxide, stearyl amine oxide, oleyl amine oxide, or a mixture thereof.

[0023] In addition to the amine oxides mentioned above, suitable amine oxides for optional use include those having amide alkyl bridges, such as cocamidopropylamine oxide, laurylamidopropylamine oxide, myristylamidopropylamine oxide, palmitylamidopropylamine oxide, stearylamidopropylamine oxide, oleamide propylamine oxide, or mixtures thereof. Similarly, when using amine oxides, at least 60% by weight of the amine oxide must not have amide alkyl bridges.

[0024] Other suitable amphoteric surfactants (i.e., non-oxidizing amines) include imidazoline, sodium acylamphoacetate, sodium acylamphopropionate, disodium acylamphodiacetate, and disodium acylamphodiapropionate, wherein the acyl group (i.e., alkyl acyl group) may contain C7-C.18 Alkyl moiety. Illustrative examples of suitable amphoteric surfactants include sodium lauroylamphoacetate, sodium cocoamphoacetate, sodium lauroylamphoacetate, sodium cocoamphoacetate, cocoamphopropionate, or mixtures thereof.

[0025] When used, the amphoteric surfactant accounts for 1.5-15% or 3.5-15% by weight of the layered detergent composition, preferably 4-13% by weight, and most preferably 4.5-12% by weight, 4.75-11% by weight, or 4.8-10.5% by weight.

[0026] Regarding applicable zwitterionic surfactants, at least 60% by weight of the surfactant used does not have (i.e., does not contain) the defined amide alkyl bridge, and includes those expressed as R 3 -N + -(R)2-(C(R 1 )2) x -COO- or -N + -(R)2-(C(R 2 )2) y Those of -SO3- or mixtures thereof, wherein x, y, R, R 1 R 2 and R 3 As previously defined, illustrative examples of suitable zwitterionic surfactants include lauryl betaine, myristyl betaine, palmityl betaine, stearyl betaine, oleyl betaine, lauryl hydroxysulfonyl betaine, myristyl hydroxysulfonyl betaine, palmityl hydroxysulfonyl betaine, stearyl hydroxysulfonyl betaine, oleyl hydroxysulfonyl betaine, or mixtures thereof. In embodiments of the invention, the zwitterionic surfactant is lauryl betaine, myristyl betaine, palmityl betaine, or mixtures thereof, or lauryl betaine, myristyl betaine, or mixtures thereof, or lauryl betaine.

[0027] When used, the amphoteric surfactant (60% free of amide alkyl groups) constitutes 1.5-9.5% by weight, preferably 2.5-8.5% by weight, most preferably 3.5-7.5% by weight, or 4.5-7% by weight of the layered detergent composition. In embodiments of the invention, the total amount of amphoteric and amphoteric surfactants used is 5-20% by weight, preferably 6-18% by weight, most preferably 7-16% by weight, 7-13% by weight, 7.5-12% by weight, or 7.3-11% by weight of the layered detergent composition.

[0028] In another embodiment of the invention, the amphoteric surfactant and the zwitterionic surfactant are included in a weight ratio of 1:4 to 4:1, or 1:3 to 3:1, or 1:2 to 2:1, or 1:1.5 to 1.5:1, or 1:1.2 to 1.2:1, or 1:1. In yet another embodiment, laurylamine oxide is used in combination with cocoyl betaine, lauryl betaine, lauryl hydroxysulfobetaine, or both, preferably, laurylamine oxide is used in combination with cocoyl betaine and / or lauryl betaine. In even another embodiment, only amphoteric surfactants or only zwitterionic surfactants, such as laurylamine oxide or lauryl betaine, are used.

[0029] Based on the total weight of the anionic surfactants used, the anionic surfactants used in this invention are less than 40% by weight of hydroxyethyl sulfonate (i.e., acyl hydroxyethyl sulfonate). Other anionic surfactants suitable for optional use in the detergent compositions of this invention include aliphatic sulfonates, such as primary alkanes (e.g., C8-C4). 22 ) sulfonates, primary alkanes (e.g., C8-C 22 disulfonates, C8-C 22 Olefin sulfonates, C8-C 22 Hydroxyalkyl sulfonates or alkyl glycerol ether sulfonates (AGS); or aromatic sulfonates such as alkylbenzene sulfonates. Anionic surfactants may also include alkyl sulfates as described herein (e.g., C14). 12 -C 18 Alkyl sulfates or alkyl ether sulfates (including alkyl glycerol ether sulfates). Alkyl ether sulfates include those having the following formula: R 4 O(CH2CH2O) n SO3M Where R 4 It is an alkyl or alkenyl group having 8 to 18 carbons, preferably 12 to 18 carbons, n having at least 1.0, preferably less than 5, and most preferably an average value of 1 to 4, and M is a solubilizing cation such as sodium, potassium, ammonium, or substituted ammonium.

[0030] Anionic surfactants may also optionally include alkyl sulfonyl succinates (including monoalkyl and dialkyl, such as C6-C). 22 sulfosuccinates); alkyl and acyl taurates (usually methyl taurate), alkyl and acyl sarcosinates, sulfoacetates, C8-C 22 Alkyl phosphates and phosphonates, alkyl phosphates and alkoxyalkyl phosphates, acyl lactates, C8-C 22 Monoalkyl succinates and maleates, sulfoacetates, alkyl glucosides and acyl hydroxyethyl sulfonates, etc.

[0031] Sulfosuccinates can be monoalkyl sulfosuccinates having the following formula: R 5 O2CCH2CH(SO3M)CO2M; And the following amide-MEA sulfosuccinate: R 5 CONHCH2CH2O2CCH2CH(SO3M)CO2M, where R 5 The range is C8-C 22 alkyl.

[0032] Sarcosine salts are generally represented by the following formula: R 6 CON(CH3)CH2CO2M, where R 6 The range is C8-C 20 alkyl.

[0033] Taurine salts are generally determined by the following formula: R 6 CONR 7 CH2CH2SO3M Where R 6 As mentioned above, and R 7 It is a C1-C4 alkyl group.

[0034] M is a solubilizing cation as described above.

[0035] The hydroxyethyl sulfonate comprising less than 40% by weight of the anionic surfactant used in the layered detergent compositions of the present invention includes C8-C. 18 Acyl hydroxyethyl sulfonates (including those with substituted head groups such as C) 1-4 Alkyl-substituted, preferably methyl-substituted. These surfactant esters are prepared by reacting an alkali metal hydroxyethyl sulfonate with a mixture of aliphatic fatty acids having 6-18 carbon atoms and an iodine value of less than 20. Typically, at least 75% of the mixed fatty acids have 12-18 carbon atoms, and up to 25% have 6-10 carbon atoms.

[0036] Suitable acylhydroxyethyl sulfonates can be alkoxylated hydroxyethyl sulfonates, for example, described in U.S. Patent No. 5,393,466 to Ilardi et al., issued February 28, 1995, entitled "Fatty Acid Esters of Polyalkoxylated Isethonic Acid," which is incorporated herein by reference. The compound has the following general formula: R 8 CO(O)-C(X)HC(Y)H-(OCH2-CH2) m -SO3M Where R8 It is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons, and M is a solubilizing cation as described above.

[0037] Other anionic surfactants suitable for optional use in the layered detergent compositions of the present invention are acylglycinate and acylglutamate salts or mixtures thereof. These include anionic surfactants such as sodium lauroylglycinate, sodium cocoylglycinate, potassium lauroylglycinate, potassium cocoylglycinate, sodium lauroylglutamate, sodium cocoylglutamate, potassium lauroylglutamate, potassium cocoylglutamate, or mixtures thereof.

[0038] Exemplary hydroxyethyl sulfonates include sodium lauroyl hydroxyethyl sulfonate, sodium methyl lauroyl hydroxyethyl sulfonate, and sodium cocoyl hydroxyethyl sulfonate, and exemplary taurines include sodium methyl lauroyl taurate, sodium methyl cocoyl taurate, or any mixture thereof. Such anionic surfactants are commercially available. Sodium cocoyl hydroxyethyl sulfonate, sodium methyl lauroyl taurate, sodium lauroyl glycinate, sodium lauroyl glutamate, sodium methyl lauroyl hydroxyethyl sulfonate, or mixtures thereof are preferred anionic surfactants suitable for use. In embodiments of the invention, in addition to hydroxyethyl sulfonates, the anionic surfactant used is at least one of sodium lauroyl glycinate and / or sodium methyl lauroyl taurate. In a preferred embodiment, the anionic surfactant used in the detergent composition of the invention is sodium lauroyl hydroxyethyl sulfonate with sodium lauroyl glycinate, sodium lauroyl taurate, sodium methyl lauroyl taurate, or mixtures thereof. In yet another preferred embodiment, the anionic surfactant is hydroxyethyl sulfonate and taurine, preferably sodium lauroyl hydroxyethyl sulfonate and sodium methyl lauroyl taurate. In even another embodiment of the invention, the anionic surfactant used is sodium methyl lauroyl taurate or sodium lauroyl glycinate or both (i.e., 100% of one or both). When both sodium methyl lauroyl taurate and sodium lauroyl glycinate are used, they are present in a weight ratio of 1:4-4:1 or 1:3-3:1 or 1:2-2:1 or 1:1.5-1.5:1. In one embodiment of the invention, the anionic surfactant is 90-100% by weight or 95-100% by weight or 100% by weight of taurine and / or glycinate.

[0039] In yet another embodiment of the invention, the suitable anionic surfactant may optionally include α-olefin sulfonates (Na or KC). 14 -C 18 C is preferred 14 -C 16Even other anionic surfactants include ethylene oxide sulfonates (EOS) or mixtures of α-olefin sulfonates and ethylene oxide sulfonates in a weight ratio of 2:8 or 8:2, or 3:7 to 7:3, or 4:6 to 6:4.

[0040] Anionic surfactants typically constitute at least 1.5-15% by weight (or 2-14% by weight) of the layered detergent composition, preferably 2.5-13% by weight, most preferably 2.7-12% by weight, 2.8-10% by weight, or 2.85-8% by weight. In another embodiment of the invention, the anionic surfactant constitutes 2.9-7.6% by weight or 2.9-7.2% by weight of the layered detergent composition.

[0041] Furthermore, regarding the anionic surfactant, less than 40% by weight of the total anionic surfactant in the layered detergent composition is hydroxyethyl sulfonate, and more preferably, less than 35% by weight and most preferably 0.0-35% by weight, or 0.1-20% by weight, or 0.2-15% by weight, or 0.5-12% by weight, or 1-10% by weight, or 2-6% by weight, or 0.0% by weight (i.e., none) of the total anionic surfactant in the layered detergent composition is 40-100% by weight, or 55-100% by weight, or 70-100% by weight, or 75-99% by weight, or 82-97.5% by weight, or 88-95% by weight of taurine, glycinate, or both, including sodium methyllauroyl taurate or sodium lauroyl glycinate. In yet another embodiment, when less than 1.2% by weight, less than 0.9% by weight, 0 to 0.65% by weight, or 0.01 to 0.55% by weight of a nonionic surfactant is used in the washing composition, the anionic surfactant used in this invention is 100% by weight (based on the total weight of the anionic surfactant) of taurine or glycine salt.

[0042] The surfactant system used in this invention can be used with conventional palm kernel oil-derived layered structuring agents or, as described herein, without palm kernel oil-derived structuring agents (i.e., less than 2% by weight of the detergent composition contains a palm kernel oil structuring agent). Therefore, structuring agents (or structuring reagents) such as C6-C may be included. 14 Acids, alcohols, and / or amides (i.e., hydroxylated or amide derivatives of their acids), and such structuring agents again constitute less than 2% by weight of the total weight of the layered washing composition, preferably less than 1.75% by weight, most preferably less than 1.5% by weight or 0.0-1.4% by weight (or 0-1.8% by weight or 0.01-1.4% by weight or 0.5-1.45% by weight or 0.25-0.75% by weight), provided that no C is used as a C 16 -C 20In the case of lactate-based structuring agents, if such conventional palm kernel oil-derived structuring agents are used, the conventional palm kernel oil-derived structuring agents are present in at least 0.4% by weight of the layered washing composition.

[0043] Regarding the palm kernel oil-derived structuring agents applicable to the present invention, such conventional palm kernel oil-derived structuring agents include hexanoic acid, caprylic acid, capric acid, lauric acid and / or myristic acid, and any alcohol or amide derivatives thereof.

[0044] Other suitable structuring agents (alone or in combination with the palm kernel oil structuring agents described herein) include those generally classified as lactates such as C 16 -C 20 Those lactates. In embodiments of the invention, the preferred lactate is C. 16 -C 18 lactate, more preferably C 16 -C 18 Lactates, such as palmitoyl-1-lactate, stearoyl-1-lactate, or mixtures thereof. Polylactic acids (typically numbered from 2 to 3 lactyl groups) are also suitable, such as palmitoyl-2-lactate, stearoyl-2-lactate, or mixtures thereof. In another embodiment of the invention, the lactate is a mixture of palmitoyl-1-lactate and palmitoyl-2-lactate, or stearoyl-1-lactate, stearoyl-2-lactate, or mixtures thereof. In yet another embodiment of the invention, the lactate is sodium stearoyl-1-lactate and sodium stearoyl-2-lactate, wherein sodium stearoyl-2-lactate constitutes 30-80% by weight, 40-70% by weight, or 55-65% by weight of the lactate mixture. Counterions other than sodium are also suitable, such as ammonium and potassium cations.

[0045] If used, lactate comprises 2.85% by weight of the laminar detergent composition, or 0.01-2.65% by weight, or 0.02-2.3% by weight, or 0.03-1.8% by weight, or 0.4-1.7% by weight, or 0.5-1.65% by weight of the laminar detergent composition, provided that if lactate is the only structuring agent used, it is present in the laminar detergent composition at a concentration of at least 0.5% by weight.

[0046] The fatty acid sources of the structuring agents and amphoteric and zwitterionic surfactants suitable for use in this invention may include, for example, vegetables, soybeans, nuts, fruits (e.g., mangoes, papayas, cranberries, coconuts) and / or palm oil. In embodiments of this invention, the fatty acid source of the structuring agents, amphoteric and / or zwitterionic surfactants used comprises less than 95% by weight, preferably less than 90% by weight, and most preferably less than 85% by weight, a hydrophobic chain derived from palm kernel oil or palm kernel oil or both.

[0047] In even another embodiment, the structuring agent, zwitterion, and zwitterionic surfactant used in this invention may optionally contain 1 to 15% by weight, or 1 to 12% by weight, or 2 to 11% by weight, or 2 to 6% by weight, or 0.00005 to 1.5% by weight, or 0.0001 to 1.0% by weight, or 0.001 to 0.5% by weight of carbon recovered from carbon capture (e.g., purple carbon).

[0048] Thickeners such as polymeric carbohydrate thickeners are suitable for use in this invention and may include unmodified starch granules, typically such as potato starch, waxy corn starch, and simple corn starch, i.e., starch that gels at about 75°C. Pure-Gel® starch from GrainProcessing Corporation is a chemically modified corn starch granule having a gelation temperature of about 53°C and is generally preferred for use. Modified and / or unmodified starch granules having a gelation temperature of 30°C to 85°C, preferably 30°C to 80°C, and most preferably 35°C to 75°C, are suitable for inclusion as polymeric carbohydrate thickeners in the layered washing compositions of this invention. While starch is typically chosen for use, it is generally preferred that, when used in the final layered washing composition, the selected polymeric carbohydrate particles swell in the layered washing composition by at least 200% by volume, preferably at least 400% by volume, more preferably at least 600% by volume, and most preferably at least 800% by volume, to form swollen starch gel particles with a size in the range of 2-300 micrometers, or preferably 3-275 micrometers, and most preferably 4-245 micrometers. Examples of suitable and generally preferred Pure-Gel® starches are Pure Gel B990, Pure Gel B992, Pure Gel B980, and Pure Dent starch, which are commercially available from Grain Processing Corporation. Other suitable polymeric carbohydrates (i.e., starch particles) are National... TM 1545, Amioca corn starch, Clearjel, National 1333, Colflo 67, Novation 1600, Novation 2700, or Purity 420 are available from Ingredion. Chemically modified starch granules are also suitable. Typically, starch granules modified with nonionic hydrophilic groups such as hydroxyethyl or hydroxypropyl and / or ionic groups such as phosphate, carboxylate, sulfate, sulfonate, and dialkyl / trialkylamino or quaternary ammonium ions are preferred.

[0049] Suitable and other polymeric carbohydrates include water-soluble starches such as Ultra-Sperse®, cassava and waxy corn starch, and National 1215 pregelatinized unmodified corn starch or mixtures thereof. Others include Structure® ZEA, hydroxypropyl-modified corn starch, or Structure® XL, cross-linked pregelatinized hydroxypropyl starch phosphate, or mixtures thereof, which are also commercially available from Nouryon.

[0050] Other useful thickeners that can be used include gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose, hydroxymethyl or carboxymethyl cellulose, methyl cellulose, ethyl cellulose, guar gum, ebony gum, tragacanth gum, gum arabic, acacia gum, agar, xanthan gum, and mixtures thereof; modified and unmodified starch granules typically have a gelling temperature between 30 and 85°C.

[0051] Other thickeners that can also be used include Versathix. TM (PEG-150 pentaerythritol tetrastearate (and) PPG-2 hydroxyethyl cocoamide and water), Aristoflex AVC (ammonium acryloyl dimethyl taurate / VP copolymer), carbomers such as Carbopol 980 (crosslinked polyacrylic acid), Carbopol® Ultrez 10 and 20 (hydrophobically modified crosslinked polyacrylic acid); alkali-soluble emulsion polymers such as Aculyn 28, Acuyln 22 or Carbopol Aqua SF1; cationic polymers, such as modified polysaccharides, including cationic guar gum available from Aventis under the trade names Jaguar C13S, Jaguar C14S, Jaguar C17 or Jaguar C16; cationic modified cellulose, such as UCARE polymers JR 30 or JR40 from Amerchol; N-Hance 3000, N-Hance 3196, N-Hance GPX 215 or N-Hance from Ashland, Inc. GPX 196; synthetic cationic polymers such as MerQuat 100, MerQuat 280, Merquat 281 and Merquat 550 supplied by Nalco; cationic starches such as StaLok® 100, 200, 300 and 400 prepared by the Galactasol 800 series supplied by Henkel, Inc.; Quadrosoft Um-200; polyquaternium-67 and polyquaternium-24.

[0052] The thickener used in the layered washing compositions of the present invention preferably comprises at least 75% by weight (or at least 85% by weight, or 90-100% by weight, or 100% by weight) of a polymeric carbohydrate. In another embodiment, the polymeric carbohydrate is at least 50% by weight, or 55-100% by weight, or 65-95% by weight, or 75-90% by weight, or 80-90% by weight, or 90-98% by weight, or at least 95% by weight, or 100% by weight of starch, wherein starch is defined as a plant-derived polymer comprising D-glucose and 1,4 and / or 1,6 α-glycosidic bonds or links thereof, preferably both.

[0053] In yet another embodiment, when a thickener that is not a polymeric carbohydrate is used, the selected thickener typically accounts for less than 25% by weight of the total weight of the thickener used in the layered washing composition, preferably less than 15% by weight, and most preferably 0.0-6% by weight (or 0.001-3% by weight or 0.0001-2% by weight).

[0054] The total amount of thickener used is typically 2-12% by weight of the washing composition, preferably 2.25-10% by weight, and most preferably 2.5-9.5% by weight (or 2.75-9% by weight, or 2.85-8.25% by weight, or 2.85-6.2% by weight).

[0055] In another embodiment of the invention, less than 1% by weight, preferably less than 0.5% by weight, most preferably less than 0.25% by weight or 0.0% by weight of the thickener used in the layered washing composition is acrylate-based.

[0056] As for oils suitable for use in the layered cleansing compositions of the present invention, they include any oil suitable for topical application by means of the cleansing composition, preferably natural and sustainable oils suitable for contact with the skin. Exemplary examples of such oils include silicone oils and / or mineral oils, but those of natural origin and sustainability are preferred, such as peanut oil, castor oil, coconut oil, corn oil, cottonseed oil, olive oil, rapeseed oil, safflower oil, sesame oil, soybean oil, avocado oil, macadamia oil, argan oil, pomegranate oil, argan oil, blueberry oil, raspberry oil, walnut oil, pecan oil, peanut oil, laurel oil, mango seed oil, jojoba oil, hydrolyzed jojoba oil, and mixtures thereof. If silicone oil is used optionally, it may include, for example, PEG-3 polydimethylsiloxane, PEG-8 polydimethylsiloxane, PEG-9 polydimethylsiloxane, PEG-10 polydimethylsiloxane, PEG-11 methyl ether polydimethylsiloxane, PEG-12 polydimethylsiloxane, PEG-14 polydimethylsiloxane, PEG-17 polydimethylsiloxane, PEG-32 polydimethylsiloxane, and mixtures thereof.

[0057] In embodiments of the invention, the layered detergent composition of the present invention comprises 0.5-5% by weight of oil, preferably 1.0-4.5% by weight, and most preferably 1.5-4.0% by weight (or 1.75-3.5% by weight or 2.0-3.0% by weight) of oil, based on the total weight of oil in the detergent composition. In another embodiment, when used, the oil used is at least 70% by weight, or 80% by weight, or 90-100% by weight, or 100% by weight of soybean oil. In yet another embodiment, the layered detergent composition of the present invention comprises less than 0.2% by weight of oil or contains no oil (0.0% by weight). In yet another embodiment, when using oil, less than 0.5% by weight or 0.0% by weight of the total weight of oil used is silicone oil.

[0058] Amphoteric surfactants with amide-alkyl bridges, as described herein, can be used, constituting no more than 40% by weight of the zwitterionic surfactant in the detergent compositions of the present invention. Such surfactants comprise at least one acid group, and the acid group may be a carboxylic acid group or a sulfonic acid group. Such zwitterionic surfactants typically comprise quaternary nitrogen, and therefore may be quaternary amino acids. They should also typically comprise an alkyl or alkenyl group with 7 to 18 carbon atoms, which generally conforms to the overall structural formula: R 9 -[-C(O)-NH(CH2) q -] r -N + -(R 10 -)(R 11 )AB, where R 9 It is an alkyl or alkenyl group having 7 to 18 carbon atoms; R 10 and R 11 Each is independently an alkyl, hydroxyalkyl, or carboxyl group having 1 to 3 carbon atoms; q is 2 to 4; r is 0 to 1; A is an alkylene group of 1 to 3 carbon atoms optionally substituted with a hydroxyl group, and B is -CO2- or -SO3-.

[0059] Therefore, in an optional embodiment of the invention, an amphoteric surfactant, R, may be optionally used as an amide-betaine of the following formula: 9 -CONH(CH2) t -N + -(R 10 (R) 11 CH2CO2 - Where t is 2 or 3. In embodiments of the invention, the layered washing composition of the invention uses less than 3.5% or less than 3% or less than 2.5% or less than 2% or less than 1.5% or 0.01-1.25% or 0.0% of betaine and / or sulfobetaine with amide alkyl bridges.

[0060] In both equations, R 9 R 10 and R 11 As previously defined. R 9 In particular, it can be C derived from coconut oil. 12 and C 14 A mixture of alkyl groups, such that at least half, preferably at least three-quarters, of the R group is present. 9 The group has 10-14 carbon atoms. R 10 and R 11 Methyl is preferred.

[0061] Another possibility is that the zwitterionic surfactant is sulfobetaine of the following formula: R 9 -CONH(CH2) u -N + -(R 10 (R) 11 (CH2)3SO3 - Where u is 2 or 3, or a variant of these, where -(CH2)3SO3 - -CH2C(OH)(H)CH2SO3 - Replacement.

[0062] In these formulas, R 9 R 10 and R 11 As previously defined.

[0063] Exemplary examples of suitable zwitterionic surfactants having an amide alkyl group include betaines, such as cocamidopropyl betaine, cocamidopropyl betaine, and laurylamidopropyl betaine. Other suitable zwitterionic surfactants include cocamidopropyl hydroxysulfonate betaine. Such surfactants are commercially available from suppliers such as Stepan, and the use of mixtures of the above surfactants is within the scope of this invention. In a preferred embodiment, when used, the zwitterionic surfactant having an amide alkyl group is cocamidopropyl betaine.

[0064] In embodiments of the invention, less than 3.5% or less than 3% or less than 2.5% or less than 2% or less than 1.5% or 0.01-1.25% or 0.0% of betaine and / or sulfobetaine with amide alkyl bridges are used in the layered washing composition of the invention.

[0065] In another embodiment, when an amphoteric surfactant that is not an amine oxide is used, such surfactant should not exceed the amount of amine oxide used. Preferably, when present, the amount of the non-amine oxide amphoteric surfactant is less than 20% by weight or less than 18% by weight or 0.5-15% by weight of the total weight of amine oxide used in the layered detergent composition. In even another embodiment, the amount of the non-amine oxide amphoteric surfactant used is 0.5-10% by weight of the total weight of amine oxide in the layered detergent composition. In yet another embodiment, no non-amine oxide amphoteric surfactant is used.

[0066] In a further embodiment, when using an amphoteric surfactant containing an amide alkyl bridge, such surfactant should not exceed the amount of the amphoteric surfactant not containing an amide alkyl bridge. Preferably, when present, an amphoteric surfactant containing an amide alkyl bridge is used in an amount less than 40% by weight, less than 30% by weight, or 0.5 to 25% by weight of the total weight of the amphoteric surfactant not containing an amide alkyl bridge used. In even another embodiment, the amount of the amphoteric surfactant containing an amide alkyl bridge is 0.5-10% by weight of the total weight of the amphoteric surfactant not containing an amide alkyl bridge in the layered detergent composition. In yet another embodiment, an amphoteric surfactant containing an amide alkyl bridge is not used.

[0067] Nonionic surfactants may optionally be used in the washing compositions of the present invention. When used, nonionic surfactants are typically used at levels as low as 0.25 wt%, 1 wt%, 1.5 wt%, or 2 wt% of the layered washing composition, and at levels as high as 3 wt%, 4 wt%, 5 wt%, or 6 wt% of the layered washing composition. The nonionic surfactants that may be used include the reaction products of compounds having hydrophobic groups and reactive hydrogen atoms (e.g., aliphatic alcohols, acids, amides, or alkylphenols) with alkyl oxides (particularly ethylene oxide alone or with propylene oxide). Specific nonionic surfactant compounds are alkyl (C6-C6) compounds. 22 ) Phenolic ethylene oxide condensate, aliphatic (C8-C) 18 Products prepared by the condensation of linear or branched primary or secondary alcohols with ethylene oxide, and by the condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine. Other nonionic surfactants include long-chain tertiary amine oxides, long-chain tertiary phosphine oxides, dialkyl sulfoxides, etc.

[0068] In embodiments of the invention, the optional nonionic surfactant may include fatty acid / alcohol ethoxylates having the following structure: a) HOCH2(CH2) s (CH2CH2O) vH or b) HOOC(CH2) c (CH2CH2O) d H; where s and v are each independently an integer of at most 18; and c and d are each independently an integer of 1 or greater. In embodiments of the invention, s and v are each independently from 6 to 18; c and d are each independently from 1 to 30. Other choices of nonionic surfactants include those having the formula HOOC(CH2). i -CH=CH-(CH2) k (CH2CH2O) z H, wherein i and k are each independently 5 to 15; and z is 5 to 50. In another embodiment of the invention, i and k are each independently 6 to 12; and z is 15 to 35.

[0069] The nonionic surfactant used may also include glycoamides, such as polyglycoamides. Specifically, the surfactant may be one of the lactobionamides described in U.S. Patent No. 5,389,279, entitled "Compositions Comprising Nonionic Glycolipid Surfactants," issued to Au et al. on February 14, 1995, which is incorporated herein by reference; or it may be one of the glycoamides described in U.S. Patent No. 5,009,814, entitled "Use of N-Poly Hydroxyalkyl Fatty Acid Amides as Thickening Agents for Liquid Aqueous Surfactant Systems," issued to Kelkenberg on April 23, 1991, which is hereby incorporated by reference.

[0070] In an embodiment of the present invention, the nonionic surfactant used is an alkyl polyglucan, which is represented as follows: R 12 -O-(S) p , where R 12 It is C6-C 20 Or C8-C 18 Or C 10 -C 16 The alkyl group is a straight or branched chain, where S is a 5- or 6-carbon sugar group, such as glucose, xylose, lactose, fructose and / or mannose, preferably glucose, and p represents the degree of polymerization, which can be 1-12 or 1-10, most preferably 1.2 to about 1.6 or 1.3-1.5.

[0071] In embodiments of the present invention, the nonionic surfactant used is cocamide monoethanolamine (cocamide MEA), and the nonionic surfactant accounts for 0.2-1% by weight, 0.25-0.85% by weight, or 0.3-0.5% by weight of the washing composition.

[0072] In yet another embodiment of the invention, a cationic surfactant may optionally be used in the washing composition of the invention.

[0073] One class of optional cationic surfactants includes heterocyclic ammonium salts, such as cetyl or stearyl pyridinium chloride, alkylamide ethylpyrrolinium methyl sulfate, and lapiroxium chloride.

[0074] Tetraalkylammonium salts are another class of useful cationic surfactants suitable for optional use. Examples include cetyl or stearyl trimethylammonium chloride or ammonium bromide; hydrogenated palmitate or tallow trimethylammonium halide; behenyl trimethylammonium halide or methyl ammonium sulfate; decyl isononyl dimethylammonium halide; ditowyl (or distearate) dimethylammonium halide and behenyl dimethylammonium chloride.

[0075] Other types of cationic surfactants that can be used include various ethoxylated quaternary ammonium and ester quaternary ammonium salts. Examples include PEG-5 stearylammonium lactate (e.g., Genamin KSL manufactured by Clariant), PEG-2 coconut oil ammonium chloride, PEG-15 hydrogenated tallow ammonium chloride, PEG15 stearylammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and stearylamidopropyl dimethyl lactate.

[0076] Suitable cationic surfactants, and even other useful ones, include quaternized hydrolysates of silk, wheat, and keratin, and mixtures of the above-mentioned cationic surfactants are also within the scope of this invention.

[0077] If used, cationic surfactants comprise no more than 1.0% by weight of the layered detergent composition. When present, they typically comprise 0.01-0.7% by weight, more typically 0.1-0.5% by weight of the detergent composition.

[0078] In embodiments of the invention, the washing composition of the invention is substantially free of polymeric quaternary ammonium compounds (including their salts). In another embodiment, the washing composition contains less than 0.1% by weight of a polymeric quaternary ammonium compound. In yet another embodiment, the washing composition contains less than 0.01% by weight of a polymeric quaternary ammonium compound. In even another embodiment, the washing composition is free of polymeric quaternary ammonium compounds (i.e., 0.0%).

[0079] Inorganic salts are optional, but generally required components, to help thicken the washing composition. Typical salts such as NaCl, KCl, MgCl2, CaCl2, and mixtures thereof can be used. Typically, the inorganic salt constitutes 0-5% by weight of the composition, preferably 0.1-4% by weight, and most preferably 0.25-2.5% by weight (or 0.5-2% by weight).

[0080] Polyols (i.e., wetting agents) are suitable for optional use in the layered washing compositions of the present invention, whereby the polyols are limited to the extent that they are suitable for use in localized washing compositions and are water-soluble. Illustrative and non-limiting examples of polyols suitable for use in the present invention include sorbitol, glycerol, mannitol, xylitol, maltitol, or mixtures thereof. In embodiments of the present invention, the polyol used is at least 50% by weight of glycerol, based on the total weight of the polyols used in the washing composition. In another embodiment of the present invention, the polyol used is entirely glycerol (100% by weight). When used, the polyol typically constitutes 1-40% by weight of the washing composition, preferably 1.5-25% by weight of the washing composition, and most preferably 2-15% by weight (or 2.5-10% by weight) of the layered washing compositions of the present invention.

[0081] Water typically constitutes 30-90% by weight of the layered washing composition, preferably 40-95% by weight, most preferably 50-85% by weight, or even 68-78% by weight of the composition.

[0082] pH adjusters suitable for altering / buffering can be used. Such pH adjusters include triethylamine, NaOH, KOH, H₂SO₄, HCl, C₆H₈O₇ (i.e., citric acid), or mixtures thereof. The pH adjuster is added in an amount sufficient to produce the desired final pH. The pH value can be assessed using a commercially available instrument such as a pH meter from Thermo Scientific®.

[0083] The optional water-soluble skin benefits suitable for the washing compositions of the present invention are limited to the extent that they can be applied topically and are suitable for dissolving in the washing composition at the desired pH.

[0084] Illustrative examples of beneficial agents suitable for inclusion in the aqueous portion of a washing composition are acids, such as amino acids like arginine, valine, or histidine. Other suitable water-soluble beneficial agents include vitamin B2, nicotinamide (vitamin B3), vitamin B5 (panthenol), vitamin B6, vitamin C, mixtures thereof, etc. Water-soluble derivatives of these vitamins may also be used. For example, vitamin C derivatives such as ascorbate tetraisopalmitate, magnesium ascorbate phosphate, and ascorbate glycosides may be used alone or in combination with each other. Other suitable water-soluble beneficial agents include 4-ethylresorcinol, extracts such as sage, aloe vera, green tea, grape seed, thyme, chamomile, yarrow, cucumber, licorice, rosemary extracts, or mixtures thereof. Water-soluble sunscreens such as ensolazole may also be used. When present in this invention, the total amount of the optional water-soluble beneficial agent (including mixtures) may be 0.0 to 15% by weight of the washing composition, preferably 0.001 to 10% by weight, and most preferably 0.01 to 8% by weight (or 1 to 6% by weight).

[0085] Optionally, oil-soluble beneficial agents (i.e., non-water-soluble agents, defined as those in which less than 1.0 g of such beneficial agent (solute) can be dissolved in 100 mL of water (solvent) at 25°C) under atmospheric pressure) are also within the scope of this invention. The only limitation of such oil-soluble beneficial agents is that they are suitable for providing beneficial effects when applied topically, especially to the skin.

[0086] Exemplary examples of oil-soluble beneficial agents that may optionally be used in the compositions of the present invention include components such as stearic acid, vitamins such as vitamins A, D, E and K (and their oil-soluble derivatives), sunscreens such as ethylhexyl methoxycinnamate, bis-ethylhexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propionic acid, cresoltrazol trisiloxane, 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate, 2-ethylhexyl 2-hydroxybenzoate, or mixtures thereof.

[0087] Other known sunscreens that are suitable include Mexory l400 (methoxypropylaminocyclohexenylethoxyethyl cyanoacetate), Mexoryl XL (cresoltrazol trisiloxane), Mexoryl SX (terephthalimide dicamphor sulfonic acid), or mixtures thereof.

[0088] Other suitable optional oil-soluble resorcinols include resorcinols such as peptido (isobutylthiazolyl resorcinol), 4-hexylresorcinol, 4-phenylethylresorcinol, 4-cyclopentylresorcinol, 4-cyclohexylresorcinol, 4-isopropylresorcinol, or mixtures thereof. Additionally, 5-substituted resorcinols such as 4-cyclohexyl-5-methylphenyl-1,3-diol, 4-isopropyl-5-methylphenyl-1,3-diol, and mixtures thereof may be used. 5-substituted resorcinols and their synthesis are described in commonly assigned U.S. Patent Application Publication No. 2016 / 0000669A1.

[0089] Applicable and even other oil-soluble active substances include ω-3 fatty acids, ω-6 fatty acids, clomiphene, farnesol, ursolic acid, myristic acid, geraniol, oil-based betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, phellandrene, conjugated linoleic acid, terpineol, thymol, and mixtures thereof.

[0090] In embodiments of the invention, the optional oil-soluble beneficial agent used is a retinoic acid precursor. In one embodiment of the invention, the retinoic acid precursor is retinol, retinaldehyde, retinyl propionate, retinyl palmitate, retinyl acetate, or a mixture thereof. Retinyl propionate, retinyl palmitate, and mixtures thereof are generally preferred.

[0091] Another suitable retinoic acid precursor is hydroxyanasatil retinoate (RITERA®), available from Molecular Design International. It can be used in combination with the oil-soluble active ingredients described herein.

[0092] When an optional oil-soluble active ingredient is used in the composition of the present invention, such active ingredient typically accounts for 0.001-2% by weight, preferably 0.001-1.5% by weight, and most preferably 0.05-1% by weight (or 0.06-0.85% by weight) of the layered detergent composition.

[0093] Conventional preservatives can be ideally incorporated into detergent compositions to prevent the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with appropriate preservatives and routinely select them to meet preservative challenge tests and provide product stability. Suitable conventional preservatives may include hydantoin derivatives, methylparaben, propylparaben, and propionate. Suitable preservatives may include iodopropynyl butylcarbamate, phenoxyethanol, hydroxyacetophenone, ethylhexylglycerin, hexanediol, imidazolidinyl urea, sodium dehydroacetate, dimethyl-dimethyl (DMDM) hydantoin, benzyl alcohol, sodium benzoate, or mixtures thereof. Other suitable preservatives include sodium dehydroacetate, chlorophenyl glycerol ether, isothiazolinone (CIT / MIT), and decanediol. The intended use of the composition and potential incompatibilities between the preservative and other components in the emulsion should be considered when selecting the preservative. The amount of preservative used is preferably in the range of 0.01% to 2.0% by weight of the total weight of the detergent composition, including all ranges contained herein. Also preferred are preservative systems containing hydroxyacetophenone alone or in combination with other preservatives. The use of conventional vicinal diols (emollients) such as 1,2-octanediol is also suitable for use with the preservatives described herein, and is typically used in amounts of 0.2 to 1.5% by weight, preferably 0.3 to 1.25% by weight, and most preferably 0.3 to 1% by weight, of the washing composition.

[0094] In embodiments of the invention, the washing composition is substantially free of hydantoin, parabens, and isothiazolinones, as described herein.

[0095] Fragrances, fixatives, chelating agents (such as sodium gluconate and / or EDTA), and exfoliants may optionally be included in the washing compositions of the present invention. Each of these substances may be in the range of about 0.03 to about 5% by weight of the total weight of the washing composition, preferably 0.1 to 3% by weight (or 0.2 to 1.2% by weight). When using exfoliants, those selected should have a sufficiently small particle size so as not to impede the performance of any packaging used to dispense the compositions of the present invention.

[0096] Conventional emulsifiers with an HLB greater than 8 may be used optionally. Illustrative examples include Tween 40, 60, 80, polysorbate 20, and mixtures thereof. Typically, the emulsifier used in aqueous continuous systems comprises 0.03-1.5% by weight of the washing composition.

[0097] The layered detergent composition of the present invention typically contains 5-25% by weight, preferably 6-22% by weight, and most preferably 7-20% by weight (or 8-18% by weight, 9-18% by weight, or 12-17.5% by weight) of total surfactant. In embodiments of the present invention, the detergent composition contains 14-18% by weight of surfactant.

[0098] In embodiments of the present invention, suitable known sunscreens include Mexoryl 400 (methoxypropylaminocyclohexene ethoxyethyl cyanoacetate), Mexoryl XL (cresoltrazol trisiloxane), Mexoryl SX (terephthalimide dicamphor sulfonic acid), or mixtures thereof.

[0099] In another embodiment of the invention, the layered wash composition of the invention comprises palmitic acid, glycerol, and peroxisome proliferator-activated receptor ligands (“PPARs”), such as 12-hydroxystearic acid, phellandrene, conjugated linoleic acid, stearic acid, and mixtures of these PPARs. When used, the weight percentages of the components (i.e., skin matrix building components) in the layered wash composition are 0.1 to 6%, 1 to 10%, and 0.1 to 3.5%, respectively.

[0100] In even another embodiment of the invention, at least one of 1,2-hexanediol, 1,2-nonanediol tetrahexyldecyl ascorbate, and magnolol, hyaluronic acid, salicylic acid, lemongrass oil, clomiphene, benzalkonium chloride, saprol, piroctone olamine, linalool, linseed oil, benzalkonium chloride, cetrimonium chloride, algicide, benzyl chloride, anisolic acid, levulinic acid, chloride, hexadecylpyridine chloride, pyruvic acid, linseed oil and / or magnolia bark extract is used in the layered detergent composition of the invention. If used, they constitute 0.001-5% by weight, or 0.01-4% by weight, or 0.01-3.5% by weight, or 0.02-2.7% by weight, or 0.02-1% by weight, individually or in mixtures, of the layered detergent composition.

[0101] When preparing the layered washing composition of the present invention, the desired components can be mixed using conventional equipment under moderate shear and atmospheric conditions, wherein the temperature is 30 to 85°C, thereby continuing shearing until the homogeneous product is recovered.

[0102] Packaging for the washing compositions is generally unrestricted, as long as the composition can be dispensed. In embodiments of the invention, the washing compositions are sold in sachets, bottles, cans, tubes, or canisters. The packaging is preferably refillable, biodegradable, and / or made from recycled materials including post-consumer resins.

[0103] Examples are provided to illustrate the invention. They are not intended to limit the scope of the claims.

[0104] All samples in the examples were prepared by mixing the components under moderate shear and at a temperature of approximately 80°C and atmospheric pressure. A Discovery HR-2 rheometer was used with a blasting plate having a 1000-micron gap and a 0.23 s⁻¹ time. -1 Shear rate measurement of viscosity (mPascals) Second).

[0105] Example I In this Example I, samples of five shower gel compositions were prepared as shown in Table I. The washing compositions were prepared using the described surfactants. Hydrogenated soybean oil was present at 3% by weight of the washing composition, and non-hydrogenated soybean oil was present at 2% by weight. Polyquaternium 67 was used at 0.8% by weight of the composition, and Guar (Jaguar C14S) was used at 0.2% by weight. Caprylyl glycol was present at 0.3% by weight of the composition, and stearic acid was present at 0.25% by weight. A wetting agent was present at 1% by weight, and a chelating agent was used at 0.05% by weight. A fragrance was added to the composition at 1.15% by weight, and a pH of 6.5-7.5 was achieved using a pH adjuster. The composition contained approximately 70% by weight of water. Sodium benzoate was used to preserve the composition (0.5% by weight). 4.5% by weight of starch (Pure Gel B990) was used. The viscosity of the composition according to the invention is approximately 80,000 mPa-s.

[0106] As can be seen from the data provided in Table I, when the surfactant is selected according to the present invention, the resulting detergent composition is surprisingly stable in the layered phase and exhibits excellent sensory and foaming properties even when formulated with less than 2% by weight of a palm kernel oil-derived structuring agent. According to the present invention, less than 40% by weight of the total weight of the anionic surfactant in the composition is hydroxyethyl sulfonate, and a smooth (non-crystallizing) detergent composition is observed.

[0107] Skilled team members who used the compositions of the present invention to wash their hands and forearms concluded that the compositions foamed and rinsed off at least as well as conventional washing compositions formulated with more than 4% by weight of lauric acid (a layered structuring agent derived from palm kernel oil).

[0108] Table 1

[0109] Confirmed through visual and physical inspection of the samples: The isotropic / crystalline detergent composition is transparent with granular precipitates, and the layered form is an opaque / pearlescent, gentle and uniform detergent composition.

[0110] Example II In this Example II, the washing compositions, samples 6-9, were prepared in a manner similar to that described in Example I, but with the components shown in Table II. The washing compositions were prepared using the described surfactants. Hydrogenated soybean oil was present at 3% by weight of the composition, and non-hydrogenated soybean oil was present at 2% by weight. Polyquaternium 67 was present at 0.8% by weight of the composition, and Guar (Jaguar C14S) was present at 0.2% by weight. 0.3% by weight of octyl glycol and 0.25% by weight of stearic acid were used in the composition. A wetting agent was added at 1% by weight of the composition, and 0.05% by weight of a chelating agent was used. 1.15% by weight of a fragrance was added, and a pH of 6.5-7.5 was achieved using a pH adjuster. The washing compositions contained approximately 70% by weight of water. Sodium benzoate was used to preserve the composition (0.5% by weight). 4.5% by weight of starch (Pure Gel B990) was used. The viscosity of the compositions according to the invention is approximately 80,000 mPa-s.

[0111] As can be seen from the data in Table II, when the surfactant is selected according to the present invention, the resulting detergent composition is surprisingly stable in the layered phase and exhibits excellent sensory and foaming properties even when formulated with less than 2% by weight of a palm kernel oil-derived structuring agent. According to the present invention, less than 40% by weight of the total weight of the anionic surfactant in the composition is hydroxyethyl sulfonate, and a homogeneous (crystallization-free) detergent composition is observed.

[0112] Skilled team members who used the compositions of the present invention to wash their hands and forearms concluded that the compositions foamed and rinsed off at least as well as conventional washing compositions formulated with more than 4% by weight of lauric acid (a layered structuring agent derived from palm kernel oil).

[0113] Table II

[0114] Confirmed through visual and physical inspection of the samples: The isotropic / crystalline detergent compositions are transparent with granular precipitates, while the layered compositions are opaque / pearlescent, gentle, and uniform.

Claims

1. A layered detergent composition comprising: a) Anionic surfactants containing less than 40% by weight of hydroxyethyl sulfonate; b) Amphoteric surfactants, zwitterionic surfactants, or both; c) 0 to 5% by weight of nonionic surfactant; d) Layered structuring agents; and e) Water, in: i) The composition has a viscosity of at least 30,000 mPa-s; ii) The pH of the composition is at least 5; iii) The composition contains no more than 3% by weight of a sulfate-containing surfactant; iv) At least 60% by weight of the aforementioned amphoteric surfactant and / or zwitterionic surfactant are each independently free of amide alkyl bridges; v) The amphoteric surfactant is at least 80% by weight of amine oxide; vi) At least 60% by weight of the zwitterionic surfactant in the washing composition has a -N + -(R)2-(C(R 1 )2) x -COO- or -N + -(R)2-(C(R 2 )2) y The hydrophilic portion of -SO3-, where each R is independently H or C. 1-3 Alkyl; each R 1 Independently H or C 1-3 Alkyl; x is an integer from 1 to 3; each R 2 Independently H, OH or C 1-4 Alkyl groups where y is an integer from 1 to 6; and vii) The layered structuring agent comprises a) 0-2% by weight of C6-C 14 (Preferred C8-C) 14 Or the optimal choice is C8-C 12 a) Carboxylic acids or alcohols or their amide derivatives or b) 0-2.85% by weight of C 16 -C 20 Lactate or both, provided that a and b cannot both be 0, and if only a or b is present, a is present at least 0.4% by weight and b is present at least 0.5% by weight.

2. The layered detergent composition of claim 1, wherein the anionic surfactant in the composition comprises less than 35% by weight, preferably 0.1-20% by weight, and most preferably 0.0% by weight of hydroxyethyl sulfonate.

3. The layered detergent composition as claimed in any of the preceding claims, wherein the anionic surfactant comprises taurine, glycine, glutamate, or a mixture thereof.

4. The layered detergent composition as claimed in any of the preceding claims, wherein the composition comprises a taurine or glycinate surfactant and comprises less than 1% by weight of a sulfate-based surfactant.

5. The layered detergent composition of any of the preceding claims, wherein the zwitterionic surfactant is present and comprises lauryl betaine, myristyl betaine, palmityl betaine, stearyl betaine, oleyl betaine, lauryl hydroxysulfonyl betaine, myristyl hydroxysulfonyl betaine, palmityl hydroxysulfonyl betaine, stearyl hydroxysulfonyl betaine, oleyl hydroxysulfonyl betaine, or mixtures thereof.

6. The layered detergent composition as claimed in any of the preceding claims, wherein the amphoteric surfactant is present and comprises cocoyl amine oxide, lauryl amine oxide, myristyl amine oxide, palmityl amine oxide, stearyl amine oxide, oil-based amine oxide, or mixtures thereof.

7. The layered detergent composition as claimed in any of the preceding claims, wherein the pH of the composition is 5 to 8.2, or 5.65 to 8, or 5.7 to 7.75, or 5.75 to 7.5, or 5.8 to 7.25, or 6 to 7, or 6.15 to 6.85, or 6.2 to 6.

65.

8. The layered detergent composition as claimed in any of the preceding claims, wherein the viscosity of the composition is from 35,000 to 345,000 mPa-s, and is substantially free of or contains no at least one of parabens, hydantoin, isothiazolinone, dioxane, or silicone oil.

9. The layered detergent composition as claimed in any of the preceding claims, wherein the composition is free of sulfate-based surfactants, parabens, hydantoin, isothiazolinones, dioxanes, and silicone oils, and does indeed contain preservatives.

10. The layered detergent composition as claimed in any of the preceding claims, wherein the palm kernel oil-derived structuring agent is present as the sole structuring agent at 0.5-1.45% by weight of the composition.

11. The layered detergent composition as claimed in any of the preceding claims, wherein the C 16 -C 20 Lactate is present.

12. Use of an anionic surfactant comprising less than 40% by weight of hydroxyethyl sulfonate in combination with an amphoteric surfactant, an amphoteric surfactant, or a combination of both in the preparation of a layered detergent composition substantially free of or free of palm kernel oil-derived layered structuring agents, wherein the amphoteric surfactant and the amphoteric surfactant are each independently free of at least 60% amide-alkyl bridges.

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