Composition of lamelar wash and use of an anionic surfactant

Description

1 / 35 “LAMELLAR WASHING COMPOSITION AND USE OF AN ANIONIC SURFACTANT” Field of Invention

[001] The present invention is directed to a lamellar washing composition with a reduced amount or no lamellar structuring agent derived from palm kernel oil. More specifically, the washing composition comprises an anionic surfactant comprising less than 40% by weight of isethionate and an amphoteric surfactant, a zwitterionic surfactant, or both, wherein at least 60% by weight of the amphoteric and zwitterionic surfactants used are independently free of an amidoalkyl bridge. The washing composition of the present invention is surprisingly stable and suitable for formulation substantially free of at least one sulfate, paraben, hydantoin, isothiazolinone, dioxane, and silicone oil.The composition also, and unexpectedly, provides excellent sensory and foaming characteristics, with the total surfactant in the washing composition being at least 80% by weight of amphoteric surfactant, zwitterionic surfactant or both, and anionic surfactant comprising less than 40% by weight of isethionate. Background of the Invention

[002] Washing compositions are commonly used to cleanse skin and reduce shine associated with sebum produced by specialized epithelial cells known as sebocytes. They are also used to minimize bacteria on hands and face, with washing being seen as the most effective way to prevent the spread of germs and bacteria. In fact, experts believe that periodic washing throughout the day can reduce the number of consumers who catch colds by about 50%. In addition to the skin, washing compositions are conventionally used on the scalp and hair and are also used to clean household objects such as countertops, windows, and cloths. Petition 870250095184, dated 10 / 17 / 2025, page 45 / 83 2 / 35

[003] Consumers prefer gentle formulations, especially for skin and hair, and also demand formulations that are more environmentally friendly. In particular, using fewer ingredients to make formulations is desirable to simplify formulation production, resulting in a more environmentally friendly manufacturing process.

[004] There is increasing interest in making washing compositions that are appreciated by consumers and better for the planet. The present invention, therefore, is directed to a lamellar washing composition with a reduced amount or no lamellar structuring agent derived from palm kernel oil. More specifically, the washing composition comprises anionic surfactants comprising less than 40% by weight of isethionate and an amphoteric surfactant, a zwitterionic surfactant, or both, wherein at least 60% by weight of the amphoteric and zwitterionic surfactants used are independently free of (do not comprise) an amidoalkyl bridge. The washing composition of the present invention is surprisingly stable and suitable to be formulated substantially free of at least one sulfate, paraben, hydantoin, isothiazolinone, dioxane, and silicone oil.The composition also, and unexpectedly, provides excellent sensory and foaming characteristics, with the total surfactant in the washing composition being at least 80% by weight of amphoteric surfactant, zwitterionic surfactant or both, and anionic surfactant comprising less than 40% by weight of isethionate. Additional information

[005] Efforts to prepare washing compositions have been revealed. In World Application No. WO / 03017968A2, lamellar compositions and aerosol barrier dosing systems are described.

[006] Other efforts have been described to prepare detergent compositions. In published patent application no. US 2016 / 0186095, detergent compositions with amine oxide, alkylbenzene sulfonate, alkyl ether sulfate Petition 870250095184, dated 10 / 17 / 2025, page 46 / 83 3 / 35 and fatty alcohol ethoxylate are described.

[007] Still other efforts have been described for preparing washing compositions. In European patent no. EP 3971275 B1, a liquid composition for hand dishwashing with at least 50% by weight of an anionic surfactant which is an alkyl sulfate and co-surfactant, including a betaine or betaine and amine oxide, and polypropylene glycol is described.

[008] Even other efforts have been described for the realization of washing compositions. In patent no. 5,807,816, a mild cleaning composition with alkyl sulfate, alkyl ether sulfate, betaine, amine oxide or a mixture thereof and alkyl polyglucoside is described.

[009] Further efforts have been revealed to make cleaning compositions. In Patent No. 7,659,235, cleaning compositions comprising fatty acyl isethionates and a liquid crystal inducer are described.

[010] None of the additional information describes a lamellar washing composition with or without a reduced amount of isethionate and no or a reduced amount of palm kernel oil-derived lamellar structuring agent, as claimed herein. Brief Description of the Invention

[011] In a first aspect, the present invention is directed to a lamellar washing composition comprising: a) anionic surfactant with less than 40% by weight of isethionate; b) amphoteric surfactant, zwitterionic surfactant, or both; c) 0 to 4% by weight of non-ionic surfactant; d) lamellar structure; and e) water, where: i) the composition has a viscosity of at least 30,000 mPa-s; ii) the composition has a pH of at least 5; Petition 870250095184, dated 10 / 17 / 2025, page 47 / 83 4 / 35 iii) The composition does not consist of more than 3% by weight of a surfactant sulfate; iv) At least 60% by weight of the amphoteric surfactant and / or the zwitterionic surfactant are independently free of an alkyl starch bridge; (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 hydrophilic moiety that is -N+-(R)2-(C(R1)2)xCOO- or -N+-(R)2-(C(R2)2)y-SO3- where each R is independently H or a C1-3 alkyl; each R1 is independently H or a C1-3 alkyl; x is an integer from 1 to 3; each R2 is independently H, OH or a C1-4 alkyl and y is an integer from 1 to 6; and vii) the lamellar structuring agent comprises a) 0 to 2% by weight of a C6 to C14 (preferably C8 to C14 or more preferably C8 to C12) carboxylic acid or alcohol or amide derivative or b) 0 to 2.85% by weight of a C16-C20 lactylate or both, provided that a and b cannot be simultaneously 0 and if only a or b are present, a is present at least at 0.4% by weight and b is present at least at 0.5% by weight.

[012] In a second aspect, the present invention is directed to a method for washing or treating a surface, such as leather, with the lamellar washing composition of the first aspect of the invention.

[013] In a third aspect, the invention is directed to the use of an anionic surfactant comprising less than 40% by weight of isethionate in combination with an amphoteric surfactant, a zwitterionic surfactant, or both, to make a lamellar wash composition that is substantially free of or free of palm kernel oil-derived lamellar structuring agent, the amphoteric surfactant and the zwitterionic surfactants, each being independently at least Petition 870250095184, dated 10 / 17 / 2025, page 48 / 83 5 / 35 60% free of an amidoalkyl bridge.

[014] All other aspects of the present invention will become more readily apparent from the description and examples that follow.

[015] Skin, as used in this document, is intended to include the skin of the arms (including armpits), face, back, feet, neck, chest, hands, legs, buttocks and scalp (including hair). Stable means free from syneresis capable of maintaining a viscosity of at least 30,000 mPa-s and preferably at least 35,000 mPa-s and preferably from 35,000 to 345,000 mPa-s (or from 40,000 to 240,000 mPa-s or from 43,000 to 138,000 mPa-s or from 44,000 to 75,000 mPa-s) for at least one month and preferably at least 2 months after being made and stored at 45 °C, where viscosity is measured at 25 °C with a Discovery HR-2 Rheometer using blasted plates with a 1000 micron gap and a shear rate of 0.23 s⁻¹.

[016] A palm kernel oil-derived lamellar structure is understood to be a component with a fatty portion containing at least 75 to 100% (or 80 to 100% or 90 to 100% or 95 to 100% or 100%) by weight of a hydrophobic chain that is a saturated Cs-Cu hydrocarbon from palm kernel oil and including components such as lauric and myristic acid or their alcohol or amide derivatives. Lamellar, as used herein, means having layers of surfactant arrangements where groups of polar heads align with water to protect the fatty acid acyl chains from water, such that more than 85% (or 90 to 100% or 100%) of the total surfactants resulting in the composition are arranged as micellar plates or layers, creating a translucent or opaque composition, where the surfactant arrangement is induced by the surfactants themselves and as selected in the invention, creating a creamy (e.g., velvety) wash composition.The amidoalkyl bridge, as used herein, means a group represented as (C=O)-N(R)-Z- where R is as defined previously and Z is a linear alkyl group. Petition 870250095184, dated 10 / 17 / 2025, p. 49 / 83 6 / 35 branched or cyclic, but generally linear and a C1-8 alkyl and, more frequently, a C1-4 or C1-3 alkyl and, most often, a propyl group by which this group links the polar head of the surfactant and the hydrophobic tail. Again, at least 60% by weight of the amphoteric surfactant and the zwitterionic surfactant used are independently free of the amidoalkyl bridge and, preferably, at least 65% and, preferably, at least 70% (or 77.5 to 96% or 78 to 86.5% or 77 to 94% or 79.5 to 100% or 95 to 100% or 97 to 100% or 100%) are each independently free of such a bridge.

[017] In the present invention, it has been unexpectedly discovered that the use of an anionic surfactant comprising less than 40% by weight of isethionate, and amphoteric and / or zwitterionic surfactant with at least 60% by weight of the same free of the amidoalkyl bridge can be used to induce or make a stable lamellar wash composition with reduced or even non-existent palm kernel oil-derived structuring agent. Thus, the surfactant and structuring agent system used in the present invention surprisingly result in a lamellar wash composition with excellent sensory and foam characteristics, and such surfactant and structuring agent system mimics the structuring of the wash composition that is normally seen with the traditional palm kernel oil-based structuring agent at levels exceeding 4% by weight of the wash composition.In one embodiment of the invention, the washing composition comprises from 0 to 2% by weight of a C6 to C14 (preferably C8 to C14 or more preferably a C8 to C12) carboxylic acid or alcohol or amide derivative or b) from 0 to 2.85% by weight of a C16-C20 lactylate or both, with the caveat that a and b cannot be simultaneously 0% and if only one is present, a is present at least at 0.4% by weight and b is present at least at 0.4% by weight.

[018] The lamellar washing composition of this invention is suitable for removal or washing off, and preferably washed off with water. Petition 870250095184, dated 10 / 17 / 2025, p. 50 / 83 7 / 35 Such a composition may be a cleaning composition for household care (e.g., for tables, glassware, floors, bathrooms, dishes, upholstery, or laundry), but is preferably a shampoo, makeup remover, facial soap, hand soap, or personal care soap such as liquid body wash. In one embodiment of the invention, when the lamellar washing composition is used for manual applications, the composition will preferably have a viscosity not exceeding 185,000 mPa-s, or not exceeding 170,000 mPa-s, and preferably from 30,000 to 125,000 mPa-s, and more preferably from 30,000 to 115,000 mPa-s.

[019] The lamellar washing composition of the present invention may optionally include medicinal or therapeutic agents, but preferably it is a cosmetic and not therapeutic wash for removing dirt, oil or similar substances from surfaces, including skin and hair. In a preferred embodiment, the lamellar washing composition is a personal washing composition and therefore a liquid body soap for use during showering or bathing. As described below, the lamellar washing composition of the present invention may optionally comprise skin-beneficial ingredients added thereto, such as emollients, vitamins and / or derivatives thereof, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, antibacterial agents, mixtures thereof or similar. The skin-beneficial ingredients (or agents) may be water- and / or oil-soluble.If used, oil-soluble skin-beneficial agents typically constitute up to 2.0% by weight of the lamellar washing composition, whereas water-soluble skin-beneficial agents, when used, typically constitute up to 15% by weight of the washing composition of the present invention. The lamellar washing composition will normally have a pH of at least 5 or 5 to 8.2 or 5.65 to 8 or. Petition 870250095184, dated 10 / 17 / 2025, p. 51 / 83 8 / 35 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.

[020] As used herein, substantially sulfate-free means less than 3.0% and preferably less than 2.5% and preferably less than 2% or less than 1% and even more preferably less than 0.75% (or less than 0.5%) by weight of the lamellar washing composition. In one embodiment of the invention, substantially sulfate-free includes a washing composition with 0.0% (i.e., none) by weight of sulfate comprising the ingredient, including a sulfate-based surfactant. With regard to non-sulfate-based ingredients (i.e., ingredients, such as a hydantoin, that are not, for example, anionic sulfate comprising surfactants), substantially free of less than 0.7% by weight and preferably less than 0.4% and, more preferably, less than 0.3% (or less than 0.2% or less than 0.1% or less than 0.05%) by weight of the washing composition.Regarding non-sulfate-based ingredients, substantially free also includes 0.0% (i.e., none) by weight of the ingredient in the washing composition. With respect to all ingredients from which the washing composition of the present invention may be substantially free, it is within the scope of the invention to include from 0.001 to 0.05% by weight of such ingredient. In a further preferred embodiment, the washing composition of the present invention comprises less than 35 ppm, and preferably less than 25 ppm, and 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 based on the total weight of dioxane in the washing composition. In another embodiment, the washing composition of this invention may comprise from 0.00001 to 0.00005% by weight of dioxane, such as 1,4-dioxane or 0.0% by weight of 1,4-dioxane.

[021] The term that includes is intended to encompass the terms that consist essentially of and consist of. To avoid doubt and to Petition 870250095184, dated 10 / 17 / 2025, pp. 52 / 83 9 / 35 Illustration, the washing composition of this invention comprising surfactant and active ingredient is intended to include a composition consisting essentially of the same and a composition consisting of the same. All ranges defined herein are intended to include all ranges subsumed therein. Except in operational comparative examples, or where explicitly indicated otherwise, all numbers in this description indicating quantities or ratios of materials or conditions and / or physical properties of materials and / or use shall be understood as modified by the word about. The disclosure, as found herein, shall be considered to encompass all embodiments found in the claims as being multiplely dependent on one another, regardless of the fact that the claims may be found without multiple dependency or redundancy. Detailed Description of the Invention

[022] As for the amphoteric surfactant suitable for use, it is at least 80% and preferably at least 85% and preferably at least 90% (or 90 to 100% or 94 to 100% or 94 to 98% or 100%) by weight of amine oxide, wherein at least 60% by weight of the amine oxide does not have (i.e. is free of) the defined amidoalkyl bridge and has the formula: R3-N+(R4)2-O- wherein R3 represents a Cs-2o alkyl, and preferably a C10-18 alkyl, and most preferably a C12-18 alkyl (or C12-16 alkyl) and Ry represents H or a C1-6 alkyl or C1-4 alkyl or C1-3 alkyl or C1-2 alkyl or -CH3. In another embodiment of the invention, the amine oxide is cocoyl oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide, or a mixture thereof.

[023] The amine oxide suitable for optional use, in addition to the amine oxides described above, includes those that have a bridge Petition 870250095184, dated 10 / 17 / 2025, pp. 53 / 83 10 / 35 amidoalkyl as cocamidopropyl amine oxide, lauryl amidopropyl amine oxide, myristyl amidopropyl amine oxide, palmitoyl amidopropyl amine oxide, stearyl amidopropyl amine oxide, oleamidopropyl amine oxide or a mixture thereof. Again, when amine oxide is used, at least 60% by weight of the amine oxide does not have an amidoalkyl bridge.

[024] Additional suitable amphoteric surfactants for use (i.e., non-amine oxides) include imdazolines, sodium acyl amphoacetates, sodium acyl amphopropionates, disodium acyl amphodiacetates and disodium acyl amphodipropionates, wherein the acyl (i.e., alkanol group) may comprise a C7-C18 alkyl moiety. Illustrative examples of suitable amphoteric surfactants for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate, cocamphodipropionate or a mixture thereof.

[025] When used, the amphoteric surfactant represents 1.5 to 15% or 3.5 to 15% by weight of the lamellar washing composition and, preferably, 4 to 13% and, preferably, 4.5 to 12% or 4.75 to 11% or 4.8 to 10.5% by weight of the washing composition.

[026] As for the zwitterionic surfactant suitable for use, at least 60% by weight of the surfactant used does not have (i.e., is free of) the defined amidoalkyl bridge and includes those represented as R3-N+-(R)2-(C(R1)2)xCOO- or -N+-(R)2-(C(R2)2)y-SO3- or a mixture thereof where x, y, R, R1, R2 and R3 are defined above. Illustrative examples of the zwitterionic surfactant suitable for use include lauryl betaine, myristyl betaine, palmityl betaine, stearyl betaine, oleyl betaine, lauryl hydroxysultaine, myristyl hydroxysultaine, palmityl hydroxysultaine, stearyl hydroxysultaine, oleyl hydroxysultaine or a mixture thereof. In one embodiment of the invention, the zwitterionic surfactant is lauryl betaine, myristyl betaine, palmityl betaine, or a mixture thereof, or lauryl betaine, myristyl betaine, or a mixture thereof, or lauryl betaine. Petition 870250095184, dated 10 / 17 / 2025, pp. 54 / 83 11 / 35

[027] When used, the zwitterionic surfactant (60% free of amidoalkyl group) comprises 1.5 to 9.5, preferably 2.5 to 8.5, preferably 3.5 to 7.5, or 4.5 to 7% by weight of the lamellar washing composition. In one embodiment of the invention, the total amount of amphoteric and zwitterionic surfactant used is 5 to 20%, preferably 6 to 18%, preferably 7 to 16%, or 7 to 13%, or 7.5 to 12%, or 7.3 to 11% by weight of the lamellar washing composition.

[028] 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 another embodiment, lauryl oxide is used with cocoyl betaine, lauryl betaine, lauryl hydroxysultaine or both and, preferably, lauryl oxide is used with cocoyl betaine and / or lauryl betaine. In another embodiment, only amphoteric surfactant is used or only zwitterionic surfactant is used as lauryl oxide or lauryl betaine.

[029] The anionic surfactants used in the present invention are less than 40% by weight of isethionate (i.e., acyl isethionate) based on the total weight of the anionic surfactant used. Other suitable anionic surfactants for optional use in the washing composition of the present invention include aliphatic sulfonates, such as a primary alkane sulfonate (e.g., C8-C22), primary alkane disulfonate (e.g., C8-C22), C8-C22 alkene sulfonate, C8-C22 hydroxyalkane sulfonate, or alkyl glyceryl ether sulfonate (AGS); or aromatic sulfonates, such as alkyl benzene sulfonate. The anionic component may also be an alkyl sulfate (e.g., C12-C18 alkyl sulfate) or an alkyl ether sulfate (including glyceryl alkyl ether sulfates) as described herein. Among the alkyl ether sulfates are those having the formula: R4O(CH2CH2O)nSO3M Petition 870250095184, dated 10 / 17 / 2025, pp. 55 / 83 12 / 35 where R4 represents an alkyl or alkenyl group having 8 to 18 carbons, preferably 12 to 18 carbons, n has an average value of at least 1.0, preferably less than 5 and most preferably 1 to 4, and M represents a solubilizing cation, such as sodium, potassium, ammonium or substituted ammonium.

[030] The anionic may also optionally include alkyl sulfosuccinates (including mono- and dialkyl, for example, C6-C22 sulfosuccinates); alkyl and acyl taurates (frequently methyl taurates), alkyl and acyl sarcosinates, sulfoacetates, C8-C22 alkyl phosphates and phosphonates, alkyl phosphate esters and alkoxy alkyl phosphate esters, acyl lactates, CsC22 monoalkyl succinates and maleates, sulfoacetates, alkyl glucosides and acyl isethionates and the like.

[031] Sulfosuccinates can be monoalkyl sulfosuccinates that have a formula: R5O2CCH2CH(SO3M)CO2M; and amide sulfosuccinates (MEA) of the formula: R5CONHCH2CH2O2CCH2CH(SO3M)CO2M where R1 varies from C8C22 alkyl.

[032] Sarcosinates are generally indicated by the formula: R6CON(CH3)CH2CO2M, where R2 varies from C8-C20 alkyl.

[033] Taurates are generally identified by the formula: R6CONR3CH2CH2SO3M wherein R6 is as described above and R7 is a C1-C4 alkyl.

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

[035] Isethionates that may be used and comprise less than 40% by weight of the anionic surfactant used in the lamellar washing composition of the present invention include Cs-Cis acyl-isethionates (including those having a substituted head group, such as a C1-4 alkyl substitution, preferably a methyl substitution). These surfactant esters are prepared Petition 870250095184, dated 10 / 17 / 2025, pp. 56 / 83 13 / 35 by a reaction between alkali metal isethionate with mixed aliphatic fatty acids that have 6 to 18 carbon atoms and an iodine value of less than 20. Frequently, at least 75% of mixed fatty acids have 12 to 18 carbon atoms and up to 25% have 6 to 10 carbon atoms.

[036] The acyl isethionate suitable for use may be an alkoxylated isethionate, as described in Illardi et al., in U.S. Patent No. 5,393,466, entitled Fatty Acid Esters of Polyalkoxylated Isethonic Acid; issued February 28, 1995; incorporated herein by reference. This compound has the general formula: R8C-O(O)-C(X)HC(Y)H-(OCH2-CH2)m-SO3M where R8 represents an alkyl group having 8 to 18 carbons, m represents an integer from 1 to 4, X and Y each independently represent hydrogen or an alkyl group having 1 to 4 carbons, and M represents a solubilizing cation as previously described.

[037] Additional anionic surfactants suitable for optional use in the lamellar washing compositions of the present invention are acyl glycinates and acyl glutamates or mixtures thereof. These include anionic surfactants such as sodium lauroyl glycinate, sodium cocoyl glycinate, potassium lauroyl glycinate, potassium cocoyl glycinate, sodium lauroyl glutamate, sodium cocoyl glutamate, potassium lauroyl glutamate, potassium cocoyl glutamate or mixtures thereof.

[038] Illustrative isethionates include sodium lauroyl isethionate, sodium methyl lauroyl isethionate, and sodium cocoyl isethionate, and illustrative taurates include sodium methyl lauroyl taurate, sodium methyl cocoyl taurate, or mixtures thereof. Such anionic surfactants are commercially available. Sodium cocoyl isethionate, sodium methyl lauroyl taurate, sodium lauroyl glycinate, sodium lauroyl glutamate, sodium methyl lauroyl isethionate, or mixtures thereof are suitable preferred anions. Petition 870250095184, dated 10 / 17 / 2025, pp. 57 / 83 14 / 35 for use. In one embodiment of the invention, the anionic surfactant used, in addition to an isethionate, is at least one of sodium lauroyl glycinate and / or sodium methyl lauroyl taurate. In a preferred embodiment, the anionic surfactant used in the washing composition of this invention is sodium lauroyl isethionate with sodium lauroyl glycinate, sodium lauroyl taurate, sodium methyl lauroyl taurate, or a mixture thereof. In another preferred embodiment, the anionic surfactant is an isethionate with taurate and, preferably, sodium lauroyl isethionate and sodium methyl lauroyl taurate. In 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 sodium methyl lauroyl taurate and sodium lauroyl glycinate are used, they are present 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 to 1.In one embodiment of the invention, an anionic surfactant that is 90 to 100% or 95 to 100% or 100% by weight of a taurate and / or glycinate.

[039] In another embodiment of the invention, suitable anionic surfactants for use may optionally include alpha-olefin sulfonates (Na or KC 14-C 18, preferably C 14-C ie). Others include ethylene oxide sulfonates (EOS) or mixtures of alpha-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.

[040] The anionic surfactant typically comprises at least 1.5 to 15% (or 2 to 14%) and preferably 2.5 to 13% and preferably 2.7 to 12% or 2.8 to 10% or 2.85 to 8% by weight of the lamellar washing composition. In another embodiment of the invention, the anionic surfactant comprises 2.9 to 7.6% or 2.9 to 7.2% by weight of the lamellar washing composition.

[041] As for the anionic surfactant, again, less than 40% by weight of the total anionic surfactant in the lamellar washing composition is isethionate and, more preferably, less than 35% and, preferably, from 0.0 to 35%, or from 0.1 to 20% or from 0.2 to 15% or from 0.5 to 12% or from 1 to 10% or from 2 Petition 870250095184, dated 10 / 17 / 2025, pp. 58 / 83 15 / 35 to 6% or 0.0% (i.e., none) by weight of the total anionic surfactant in the lamellar washing composition is isethionate. In another embodiment, the total anionic surfactant in the lamellar washing composition is 40 to 100% or 55 to 100% or 70 to 100% or 75 to 99% or 82 to 97.5% or 88 to 95% by weight of a taurate, a glycinate or both, including methyl laurate and sodium or lauroyl glycinate sodium. In another embodiment, the anionic surfactant used in the present invention is 100% by weight (based on the total weight of the anionic surfactant) taurate or glycinate when less than 1.2% or less than 0.9% or from 0 to 0.65% or from 0.01 to 0.55% by weight of non-ionic surfactant is used in the washing composition.

[042] The surfactant system used in the present invention can be used with traditional palm kernel oil-derived lamellar structuring agents or without palm kernel oil-derived structuring agents, as described herein (i.e., less than 2% by weight of the washing composition composed of palm kernel oil structuring agent).Structuring agents such as a Ce-C14 acid, alcohol and / or amide (i.e., hydroxylated or amide derivatives of its acid) may therefore be included and such structuring agents will again represent less than 2% and preferably less than 1.75% and preferably less than 1.5% or 0.0 to 1.4% (or 0 to 1.8% or 0.01 to 1.4% or 0.5 to 1.45% or 0.25% to 0.75%) by weight of the total weight of the lamellar wash composition with the caveat that if this traditional palm kernel oil-derived structuring agent is used without structuring agent, i.e., a Ci6-C20 lactylate, the traditional palm kernel oil-derived structuring agent is present at least at 0.4% by weight of the lamellar wash composition.

[043] As for the palm kernel oil-derived structuring agent suitable for use in the invention, these traditional palm kernel oil-derived structuring agents include caproic, caprylic, capric, lauric and / or myristic acids and any alcohol or amide derivatives thereof. Petition 870250095184, dated 10 / 17 / 2025, p. 59 / 83 16 / 35

[044] Additional structuring agents suitable for optional use (alone or in combination with the palm kernel oil structuring agents described herein) include those generally classified as lactylates, such as C16-C20 lactylates. In one embodiment of the invention, preferred lactylates are C16-C18 lactylates and, more preferably, C16-C18 lactylates such as palmitoyl-1-lactylate, stearoyl-1-lactylate, or mixtures thereof. Polylactyls (usually numbered from two to three lactyl groups) are also suitable for use, such as palmitoyl-2-lactylate, stearoyl-2-lactylate, or mixtures thereof. In another embodiment of the invention, the lactylate is a mixture of palmitoyl-1-lactylate and palmitoyl-2-lactylate, or stearoyl-1-lactylate or a mixture thereof. In another embodiment of the invention, the lactylate is sodium stearoyl-1-lactylate and sodium stearoyl-2-lactylate, wherein the sodium stearoyl-2-lactylate comprises 30 to 80% or 40 to 70% or 55 to 65% by weight of the lactylate mixture.Counter-ions, in addition to sodium, are also suitable for use, such as ammonium and potassium cations.

[045] If used, lactylates shall constitute up to 2.85% by weight of the lamellar washing composition, or from 0.01 to 2.65% or from 0.02 to 2.3% or from 0.03 to 1.8% or from 0.4 to 1.7% or from 0.5 to 1.65% by weight of the lamellar washing composition, provided that if lactylate is the only structuring agent used, it shall be present at least at 0.5% by weight in the lamellar washing composition.

[046] The fatty acid sources for the structuring and amphoteric and zwitterionic surfactants suitable for use in this invention may, for example, include vegetables, soy, nuts, fruits (e.g., mango, papaya, berries, coconut) and / or palm oil. In one embodiment of the invention, less than 95% and preferably less than 90% and preferably less than 85% by weight of the fatty acid sources for the structuring, amphoteric and / or zwitterionic surfactants used includes a hydrophobic chain. Petition 870250095184, dated 10 / 17 / 2025, pp. 60 / 83 17 / 35 derived from palm kernel oil or palm kernel oil, or both.

[047] In another embodiment, the structural, zwitterionic and amphoteric surfactant used in the present invention may optionally comprise from 1 to 15%, or 1 to 12%, or 2 to 11%, or 2 to 6%, or 0.00005 to 1.5%, or 0.0001 to 1.0%, or 0.001 to 0.5% by weight of carbon recovered from carbon capture (e.g., purple carbon) based on the total carbon weight in the structural, amphoteric and / or zwitterionic surfactant.

[048] Thickener as a thickener of polymeric carbohydrate is suitable for use in the present invention, the same may include unmodified starch granules, in general, such as potato starch, waxy corn starch, as well as plain corn starch, i.e., a starch that gelatinizes at about 75 °C. Pure gel® starches from Grain Processing Corporation are chemically modified corn starch granules with a gelatinization temperature of about 53 °C and are often preferred for use. Modified and / or unmodified starch granules with gelatinization temperatures of 30 to 85 °C and preferably 30 to 80 °C and preferably 35 to 75 °C are suitable for inclusion as a thickening agent of polymeric carbohydrates in the lamellar washing compositions of the invention.In general, and notwithstanding the starch selected for use, it is normally preferable that the granules of the selected polymeric carbohydrate, when used in the final lamellar wash composition, swell by at least 200%, and preferably at least 400%, and more preferably at least 600%, and preferably at least 800% by volume in the lamellar wash composition to form swollen starch gel particles with a size in the range of 2 to 300 micrometers, or preferably 3 to 275 micrometers, and preferably 4 to 245 micrometers. Examples of frequently preferred Pure-Gel® starches suitable for use are the Pure Gel B990, Pure Gel B992, Pure Gel B980 and Pure Dent starches available. Petition 870250095184, dated 10 / 17 / 2025, pp. 61 / 83 18 / 35 commercially available from Grain Processing Corporation. Additional polymeric carbohydrates suitable for use (i.e., starch granules) are National™ 1545, corn starch, Clearjel, National 1333, Colflo 67, Novation 1600, Novation 2700, or Purity 420 made available by Ingredion. Chemically modified starch granules are also suitable for use. Starch granules modified with non-ionic 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 frequently selected for use.

[049] Other suitable polymeric carbohydrates for use are water-soluble starches such as Ultra-Sperse®, tapioca and waxy maize starch, and unmodified pregelatinized maize starch National 1215 or mixtures thereof. Still others include Structure® ZEA, a hydroxypropyl modified maize starch, or Structure® XL, a cross-linked pregelatinized hydroxypropyl starch phosphate or mixtures thereof, which are also commercially available from Nouryon.

[050] Other useful thickeners that can be used include carbohydrate gums, such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethylcellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, hydroxymethyl or carboxymethylcellulose, methylcellulose, ethylcellulose, guar gum, karaya gum, tragacanth gum, gum arabic, acacia gum, agar gum, xanthan gum and mixtures thereof; modified and unmodified starch granules, often with gelatinization temperatures between 30 and 85 °C.

[051] Additional thickeners that may also be used include Versathix™ (PEG-150 Pentaerythrityl Tetrastearate (and) PPG-2 Hydroxyethyl cocamide and water), Aristoflex AVC (ammonium acryloyldimethyltaurate / VP copolymer), Carbomer likre Csarbopol 980 (crosslinked polyacrylic acid) Carbopol® Ultrez 10 and 20 (hydrophobically modified crosslinked polyacrylic acid); Petition 870250095184, dated 10 / 17 / 2025, pp. 62 / 83 19 / 35 Alkaline soluble emulsion polymers, such as Aculyn 28, Aculyn 22 or Carbopol Aqua SF1; cationic polymer, such as modified polysaccharides, including cationic guar available from Aventis under the trade names Jaguar C13S, Jaguar C14S, Jaguar C17 or Jaguar C16; cationic modified cellulose, such as UCARE Polymer JR 30 or JR 40 from Amerchol; N-Hance 3000, N-Hance 3196, N-Hance GPX 215 or N-Hance GPX 196 from Ashland, Inc.; synthetic cationic polymer, such as MerQuat 100, MerQuat 280, Merquat 281 and Merquat 550 from Nalco; Cationic starches, for example, StaLok® 100, 200, 300 and 400 manufactured by Henkel, Inc.'s Galactasol 800 series; Quadrosoft Um-200; Polyquaternium-67 and Polyquaternium-24.

[052] The thickener used in the lamellar washing composition of the present invention preferably comprises at least 75% (or at least 85%, or 90 to 100% or 100%) by weight of polymeric carbohydrate. In another embodiment, the polymeric carbohydrate is at least 50% by weight or 55 to 100% or 65 to 95% or 75 to 90% or 80 to 90% or 90 to 98% or at least 95% or 100% by weight of starch, where starch is defined as a plant-derived polymer comprising D-glucose and 1,4 and / or 1,6 alpha-glycosidic linkages or linkages, and preferably both.

[053] In yet another embodiment, when a thickener that is not a polymeric carbohydrate is used, the thickener selected normally represents less than 25% and preferably less than 15% and preferably 0.0 to 6% (or 0.001 to 3% or 0.0001 to 2%) by weight of the total weight of the thickener used in the lamellar washing composition.

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

[055] In another embodiment of the invention, less than 1% and preferably less than 0.5% and preferably less than 0.25% or 0.0% in Petition 870250095184, dated 10 / 17 / 2025, pp. 63 / 83 20 / 35 of the weight of the thickener used in the lamellar washing composition is acrylate-based.

[056] As for suitable oils for optional use in the lamellar washing compositions of this invention, these include any oils suitable for topical application by means of a washing composition and, preferably, an oil suitable for skin contact that is natural and sustainable. Illustrative examples of such oils include silicone oils and / or mineral oil, but preferably those of natural and sustainable origin, such as peanut oil, castor oil, coconut oil, corn oil, cottonseed oil, olive oil, rapeseed oil, safflower seed oil, sesame seed oil, soybean oil, avocado oil, macadamia nut oil, argan oil, pomegranate oil, Moroccan argan oil, blueberry oil, raspberry oil, walnut oil, pecan oil, peanut oil, myrtle oil, mango seed oil, jojoba oil, hydrolyzed jojoba oil, moringa oil, coffee seed oil, mixtures thereof or similar oils.If a silicone oil is optionally used, it may include, for example, PEG-3 Dimethicone, PEG-8 Dimethicone, PEG-9 Dimethicone, PEG-10 Dimethicone, PEG-11 Methyl Ether Dimethicone, PEG-12 Dimethicone, PEG-14 Dimethicone, PEG-17 Dimethicone, PEG-32 Dimethicone, mixtures thereof or similar mixtures.

[057] In one embodiment of the invention, the lamellar washing composition of the present invention comprises 0.5 to 5% oil and preferably 1.0 to 4.5% and preferably 1.5 to 4.0% (or 1.75 to 3.5% or 2.0 to 3.0%) by weight of oil based on the total weight of oil in the washing composition. In another embodiment, the oil used is at least 70%, or 80%, or 90 to 100%, or 100% by weight of soybean oil when used. In another embodiment, the lamellar composition of the present invention comprises less than 0.2% by weight of oil or none (0.0%) by weight of oil. In another embodiment, Petition 870250095184, dated 10 / 17 / 2025, pp. 64 / 83 21 / 35 when oil is used, less than 0.5% or 0.0% by weight of the total weight of the oil used is silicone oil.

[058] Zwitterionic surfactants with the amidoalkyl bridge as described in this document may be used, constituting no more than 40% by weight of the zwitterionic surfactant used in the washing composition of the invention. These surfactants include at least one acid group, and the acid group may be a carboxylic group or a sulfonic acid group. These zwitterionic surfactants generally include quaternary nitrogen and therefore may be quaternary amino acids. They generally include an alkyl or alkenyl group of 7 to 18 carbon atoms, which generally obeys a general structural formula: R9-[-C(O)-NH(CH2)q-]r-N+-(R7-)(R8)AB where R9 represents alkyl or alkenyl groups with 7 to 18 carbon atoms; R10 and R11 each independently represent alkyl, hydroxyalkyl, or carboxyalkyl groups with 1 to 3 carbon atoms; q represents 2 to 4; r represents 0 to 1; A represents an alkylene group with 1 to 3 carbon atoms optionally substituted with a hydroxyl group, and B represents --CO2-- or --SO3--.

[059] In an optional embodiment of the invention, therefore, zwitterionic surfactants that are amido betaines of the formula: R9--CONH(CH2)t-N+-(R10)(R11)CH2CO2· where t is 2 or 3 may optionally be used. In one embodiment 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 from 0.01 to 1.25% or 0.0% of betaine and / or sultaine with an amidoalkyl bridge is used in the lamellar washing composition of the invention.

[060] In both formulas, R9, R10 and R11 are as defined previously. R9 may, in particular, be a mixture of C12 and C14 alkyl groups derived from coconut oil such that at least half, preferably at least three-quarters of the R9 groups have 10 to 14 Petition 870250095184, dated 10 / 17 / 2025, pp. 65 / 83 22 / 35 carbon atoms. R10 and R11 are preferentially methyl.

[061] Another possibility is that the zwitterionic surfactant is a sulfobetaine with the formula: R9-CONH(CH2)u -N+-(R10)(R11)(CH2)3SO3 where u represents 2 or 3, or variants thereof where -(CH2)3SO3- is replaced by -CH2C(OH)(H)CH2SO3-.

[062] In these formulas, R9, R10 and R11 are as defined previously.

[063] Illustrative examples of suitable amide alkyl group zwitterionic surfactants include betaines such as cocodimethyl carboxymethyl betaine, cocamidopropyl betaine, and lauryl amide propyl betaine. An additional suitable amide alkyl group zwitterionic surfactant includes cocamidopropyl hydroxy sultaine. Such surfactants are commercially available from suppliers such as Stepan Company and are within the scope of the invention to employ mixtures of the aforementioned surfactants. In a preferred embodiment, and when used, the amide alkyl group zwitterionic surfactant is cocamidopropyl betaine.

[064] In one embodiment 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 from 0.01 to 1.25% or 0.0% of betaine and / or sultaine with an amidoalkyl bridge is used in the lamellar washing composition of the invention.

[065] In another embodiment, when a surfactant other than an amine oxide is used, this surfactant should not exceed the amount of amine oxide used. Preferably, and when present, the amphoteric surfactant that is not an amine oxide is used in an amount less than 20% or less than 18% or from 0.5 to 15% by weight of the total weight of amine oxide used in the lamellar washing composition. In another embodiment, the amount of surfactant used that is not an amine oxide is from 0.5 to 10% by weight of the weight Petition 870250095184, dated 10 / 17 / 2025, pp. 66 / 83 23 / 35 total amine oxide in the lamellar washing composition. In another embodiment, no amphoteric surfactant other than an amine oxide is used.

[066] In another embodiment, when a zwitterionic surfactant comprising an amidoalkyl bridge is used, this surfactant shall not exceed the amount of zwitterionic surfactant used that does not comprise an amidoalkyl bridge. Preferably, and when present, a zwitterionic surfactant comprising an amidoalkyl bridge is used, the same being present in an amount less than 40% or less than 30% or from 0.5 to 25% by weight of the total weight of the zwitterionic surfactant used that does not comprise an amidoalkyl bridge. In another embodiment, the amount of zwitterionic surfactant comprising an amidoalkyl bridge is from 0.5 to 10% by weight of the total weight of the zwitterionic surfactant that does not comprise an amidoalkyl bridge in the lamellar washing composition. In another embodiment, no zwitterionic surfactant comprising an amidoalkyl bridge is used.

[067] Nonionic surfactants may optionally be used in the washing composition of the present invention. When used, nonionic surfactants are typically used at levels as low as 0.25, 1, 1.5 or 2% by weight and at levels as high as 3, 4 or 6% by weight of the lamellar washing composition. The nonionics that may be used include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide alone or with propylene oxide. Specific nonionic surfactant compounds are condensers of ethylene oxide alkyl phenols (C6-C22), the condensation products of primary or secondary aliphatic linear or branched alcohols (C8-C18) with ethylene oxide, and products produced from the condensation of ethylene oxide with the reaction products of ethylene oxide. Petition 870250095184, dated 10 / 17 / 2025, pp. 67 / 83 24 / 35 propylene and ethylenediamine. Other nonionic surfactants include long-chain tertiary amine oxides, long-chain tertiary phosphine oxides, dialkyl sulfoxides, and the like.

[068] In one embodiment of the invention, the optionally used nonionic surfactants may include fatty acid / alcohol ethoxylates having the following structures: a) HOCH2(CH2)s(CH2CH2O)vH or b) HOOC(CH2)c(CH2CH2O)dH; wherein sev are each independently an integer up to 18; and ced are each independently an integer from 1 or higher. In one embodiment of the invention, sev are each independently 6 to 18; ced are each independently 1 to 30. Other options for nonionic surfactants include surfactants having the formula HOOC(CH2)i-CH=CH-(CH2)k(CH2CH2O)zH, wherein i, k are each independently 5 to 15; ez is 5 to 50. In another embodiment of the invention, iek are, each independently, 6 to 12; ez is 15 to 35.

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

[070] In one embodiment of the invention, the nonionic surfactant used is an alkyl polyglucoside represented as: R12-O-(S)p, where R12 represents a linear or branched C20 or Cs to Cis or C10 to C16 alkyl group and S represents a 5 or 6-membered saccharide group. Petition 870250095184, dated 10 / 17 / 2025, pp. 68 / 83 25 / 35 carbons, such as glucose, xylose, lactose, fructose and / or mannose, and preferably, it is glucose, where represents the degree of polymerization and can have a value of 1 to 12 or 1 to 10, and most preferably, 1.2 to 1.6 or 1.3 to 1.5.

[071] In one embodiment of the invention, the non-ionic surfactant used is cocamide monoethanolamine (cocamide MEA) and comprises 0.2 to 1% or 0.25 to 0.85% or 0.3 to 0.5% by weight of the washing composition.

[072] In yet another embodiment of the invention, cationic surfactants may optionally be used in the washing composition of the present invention.

[073] A class of optional cationic surfactants includes heterocyclic ammonium salts such as stearyl or cetyl pyridinium chloride, amidoethyl pyrrilinodium methyl alkyl sulfate and lapyrium chloride.

[074] Tetraalkyl ammonium salts are another useful class of cationic surfactants suitable for optional use. Examples include cetyl or stearyl trimethyl ammonium chloride or bromide; hydrogenated palm or tallow trimethylammonium halides; behenyl trimethyl ammonium halides or methyl sulfates; decyl isononyl dimethyl ammonium halides; disebo (or distearyl) dimethyl ammonium halides and behenyl dimethyl ammonium chloride.

[075] Still other types of cationic surfactants that can be used are the various ethoxylated quaternary amines and quaternary esters. Examples include PEG-5 stearyl ammonium lactate (e.g., Genamin KSL manufactured by Clariant), PEG-2 coco ammonium chloride, PEG-15 hydrogenated tallow ammonium chloride, PEG-15 stearyl ammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and stearyl amidopropyl dimethylamine lactate.

[076] Even other useful cationic surfactants suitable for Petition 870250095184, dated 10 / 17 / 2025, pp. 69 / 83 26 / 35 Optional uses include quaternized hydrolysates of silk, wheat and keratin proteins, and it is within the scope of the invention to use mixtures of the aforementioned cationic surfactants.

[077] If used, cationic surfactants will comprise at most 1.0% by weight of the lamellar washing composition. When present, they typically represent 0.01 to 0.7% and, more typically, 0.1 to 0.5% by weight of the washing composition.

[078] In one embodiment of this invention, the washing composition of the present invention will be substantially free of quaternary ammonium polymer compounds (including salts thereof). In another embodiment, the washing composition will comprise less than 0.1% by weight of quaternary ammonium polymer compounds. In yet another embodiment, the washing composition comprises less than 0.01% by weight of polymeric quaternary ammonium compounds. In still another embodiment, the washing composition is free of quaternary ammonium polymer compounds (i.e., 0.0%).

[079] Inorganic salt is optional, but often a desired ingredient to aid in thickening the composition. Typical salts such as NaCl, KCl, MgCb, CaCb, mixtures thereof or similar salts may be used. Typically, the inorganic salt comprises 0 to 5% and preferably 0.1 to 4% and preferably 0.25 to 2.5% (or 0.5 to 2%) by weight of the composition.

[080] Polyols (i.e., humectants) are suitable for optional use in the lamellar washing compositions of the present invention, being limited only insofar as they are suitable for use in a water-soluble topical washing composition. Illustrative and non-limiting examples of polyols suitable for use in the present invention include sorbitol, glycerol, mannitol, xylitol, maltitol, or mixtures thereof. In a Petition 870250095184, dated 10 / 17 / 2025, pp. 70 / 83 In one embodiment of the invention, the polyol used is at least 50% by weight glycerol, based on the total weight of the polyol used in the washing composition. In another embodiment of the invention, the polyol used is all glycerol (100% by weight). The polyol, when used, typically represents 1 to 40% by weight of the washing composition and preferably 1.5 to 25% by weight of the lamellar washing composition of the present invention.

[081] Water normally makes up 30 to 90%, and preferably 40 to 95%, and preferably 50 to 85% by weight of the lamellar washing composition, or even 68 to 78% by weight of the composition.

[082] Suitable pH adjusters to modify / buffer can be used. Such pH adjusters include triethylamine, NaOH, KOH, H2SO4, HCl, CeHsO? (i.e., citric acid) or mixtures thereof. pH adjusters are added in quantities to produce the desired final pH. pH values ​​can be evaluated with commercial instrumentation, such as a pH meter commercially available from Thermo Scientific®.

[083] Optional water-soluble skin-benefiting agents suitable for use in the washing composition of this invention are limited only to the extent that they are capable of being applied topically and suitable for dissolving in the washing composition at the desired pH.

[084] Illustrative examples of suitable beneficial agents for inclusion in the aqueous portion of the washing composition are acids, such as amino acids like arginine, valine, or histidine. Additional water-soluble beneficial agents suitable for use include vitamin B2, niacinamide (vitamin B3), vitamin Bs (Panthenol), vitamin B6, vitamin C, mixtures thereof, or similar substances. Water-soluble derivatives may also be used. Petition 870250095184, dated 10 / 17 / 2025, pp. 71 / 83 28 / 35 of these vitamins. For example, vitamin C derivatives, such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate, and ascorbyl glycoside, may be used alone or in combination with each other. Other suitable water-soluble beneficial agents include 4-ethyl resorcinol, extracts such as sage, aloe vera, green tea, grape seed, thyme, chamomile, yarrow, cucumber, licorice, rosemary extract, or mixtures thereof. Water-soluble sunscreens, such as ensulizol, may also be used. The total amount of optional water-soluble beneficial agents (including mixtures) when present in the washing composition may vary from 0.0 to 15%, preferably from 0.001 to 10%, and most preferably from 0.01 to 8% (or from 1 to 6%) by weight of the washing composition.

[085] It is also within the scope of the present invention to optionally include oil-soluble beneficial agents (i.e., water-insoluble agents defined as less than 1.0 g of such agent (solute) being dissolved in 100 ml of water at 25 °C (solvent) at atmospheric pressure). The only limitations regarding such oil-soluble beneficial agents are that they are suitable for providing a benefit when applied topically, especially to the skin.

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

[087] Other well-known sunscreens suitable for use include Mexoryl 400 (methoxypropylaminocyclohexenylideneethoxyethylcyanoacetate), Mexoryl XL (drometizole trisiloxane), Mexoryl SX (acid Petition 870250095184, dated 10 / 17 / 2025, pp. 72 / 83 29 / 35 terephthalylidene dicamphorsulfonic acid) or mixtures thereof.

[088] Other optional beneficial oil-soluble agents suitable for use include resorcinols such as thiamidol (isobutylene thiazolyl resorcinol), 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol, 4-isopropyl resorcinol, or a mixture thereof. 5-substituted resorcinols such as 4-cyclohexyl-5-methylbenzene-1,3-diol, 4-isopropyl-5-methylbenzene-1,3-diol, mixtures thereof, or similar ones may also be used. The 5-substituted resorcinols and their synthesis are described in commonly assigned Published Patent Application No. 2016 / 0000669A1.

[089] Even other oil-soluble actives suitable for use include omega-3 fatty acids, omega-6 fatty acids, escalvalol, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol mixtures thereof or similar.

[090] In one embodiment 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, retinal, retinyl propionate, retinyl palmitate, retinyl acetate, or a mixture thereof. Retinyl propionate, retinyl palmitate, and mixtures thereof are typically preferred.

[091] Yet another suitable retinoic acid precursor for use in commercially available hydroxyanasatil retinoate is Retextra® as supplied by Molecular Design.

[092] International. The same can be used in a mixture with the oil-soluble actives described in this document.

[093] When the optional oil-soluble active ingredient is used in the compositions of the invention, such active ingredient typically from 0.001 to 2% and, Petition 870250095184, dated 10 / 17 / 2025, pp. 73 / 83 30 / 35 preferably, from 0.001 to 1.5% and, more preferably, from 0.05 to 1% (or from 0.06 to 0.85%) by weight of the lamellar washing composition.

[094] Conventional preservatives may be desirably incorporated into the washing composition to protect against the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with appropriate preservatives and routinely choose them to satisfy the preservative challenge test and to provide product stability. Suitable traditional preservatives may include methylparaben, propylparaben, and propionate salts of hydantoin. Suitable preservatives may include iodopropynylbutyl carbamate, phenoxyethanol, hydroxyacetophenone, ethylhexylglycerin, hexylene glycol, imidazolidinyl urea, sodium dehydroacetate, dimethyl-dimethyl (DMDM) hydantoin, benzyl alcohol, sodium benzoate, or mixtures thereof. Other suitable preservatives include sodium dehydroacetate, chlorophenesin, isothiazolinones (CIT / MIT), and decylene glycol.Preservatives should be selected taking into account the intended use of the composition and any potential incompatibilities between the preservatives and other emulsion ingredients. Preservatives are preferably used in amounts ranging from 0.01% to 2.0% by weight of the total weight of the washing composition, including all ranges contained therein. A preservative system with hydroxyacetophenone alone, or in a mixture with other preservatives, is also preferred. The use of conventional vicinal diols (emollients) such as 1,2-octane diol is also suitable for use with the preservatives described herein, typically in amounts of 0.2 to 1.5%, and preferably 0.3 to 1% by weight of the washing composition.

[095] In one embodiment of the invention, the washing composition is substantially free of hydantoins, parabens and isothiazolinones, as described therein. Petition 870250095184, dated 10 / 17 / 2025, pp. 74 / 83 31 / 35

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

[097] Conventional emulsifiers with an HLB greater than 8 may optionally be used. Illustrative examples include Tween, 40, 60, 80, polysorbate 20 and mixtures thereof. Typically, emulsifiers for continuous water systems constitute 0.3 to 1.5% by weight of the washing composition.

[098] Regarding the lamellar washing composition of the present invention, it normally comprises 5 to 25% and preferably 6 to 22% and preferably 7 to 20% (or 8 to 18% or 9 to 18% or 12 to 17.5%) by weight of total surfactant. In one embodiment of the invention, the washing composition comprises 14 to 18% by weight of surfactant.

[099] In one embodiment of the invention, known sunscreens suitable for use include Mexoryl 400 (methoxypropylaminocyclohexenylidene, ethoxyethylcyanoacetate), Mexoryl XL (drometrizol trisiloxane), Mexoryl SX (terephthalidene, dicaminosulfonic acid) or mixtures thereof.

[100] In another embodiment of the invention, the lamellar wash composition of the present invention comprises palmitic acid, glycerol, and peroxisome proliferator-activated receptor (PPAR) ligands such as 12-hydroxystearic acid, petroleselinic acid, conjugated linoleic acid, stearic acid, and mixtures of such PPARs. When used, the weight percentages of the ingredients (i.e., skin matrix building ingredients) in Petition 870250095184, dated 10 / 17 / 2025, pp. 75 / 83 32 / 35 lamellar washing compositions are 0.1 to 6%, 1 to 10%, and 0.1 to 3.5%, respectively.

[101] In another embodiment of the invention, at least one of 1,2-hexanediol, 1,2-nonanediol tetrahexyldecyl ascorbate, honokiol, hyaluronic acid, salicylic acid, lemongrass oil, climbazole, benzalkonium chloride, hinokitiol, piroctone olamine, linalool, linseed oil, linseed oil, benzalkonium chloride, cetrimonium chloride, benzalkonium chloride, benzethonium chloride, anisic acid, levulinic acid, chloride, cetylpyridinium chloride, pyruvic acid, linseed oil, hemp seed oil and / or magnolia bark extract is used in the lamellar washing composition of the invention. If used, alone or in a mixture, it comprises 0.001 to 5%, or 0.01 to 4%, or 0.01 to 3.5%, or 0.02 to 2.7%, or 0.02 to 1% by weight of the lamellar washing composition.

[102] In preparing the lamellar washing composition of the present invention, the desired ingredients can be mixed with conventional apparatus under moderate atmospheric and shear conditions, with temperatures from 30 to 85 °C, where shearing continues until a homogeneous product is recovered.

[103] The packaging for the washing composition is normally not limited, provided that the composition can be dispensed. In one embodiment of the invention, the washing composition is sold in a sachet, bottle, jar, tube or container. The packaging is preferably refillable, biodegradable and / or prepared from recycled materials, including post-consumer resins.

[104] The Examples are provided to facilitate understanding of the invention. They are not intended to limit the scope of the claims.

[105] All samples in the examples were prepared by mixing the ingredients with moderate shear and at a temperature of Petition 870250095184, dated 10 / 17 / 2025, pp. 76 / 83 33 / 35 approximately 80 °C and atmospheric pressure. The viscosity (millipascal second) was measured with a Discovery HR-2 rheometer using blasted plates with a 1000 micron gap and a shear rate of 0.23 s⁻¹. Example I

[106] In this Example I, five samples of body wash compositions were prepared as shown in Table I. The wash compositions were made with the surfactants described. Hydrogenated soybean oil was present at 3% and non-hydrogenated soybean oil was present at 2% by weight of the wash compositions. Polyquaternium 67 was used at 0.8% by weight and Guar (Jaguar C14S) was used at 0.2% by weight of the compositions. Caprylyl glycol was present at 0.3% by weight and stearic acid at 0.25% by weight of the compositions. The humectant was present at 1% and the chelating agent at 0.05% by weight was used. Fragrance was added to the compositions at 1.15% by weight and pH adjusters were used to achieve a pH between 6.5 and 7.5. The compositions contained approximately 70% by weight of water. Sodium benzoate was used to preserve the compositions (0.5% by weight). Starch (Pure Gel B990) was used at 4.5% by weight.The viscosity for the compositions consistent with the invention was approximately 80,000 mPas.

[107] As can be seen from the data presented in Table I, when surfactants are selected according to the invention, the resulting washing compositions are surprisingly stable in the lamellar phase and have excellent sensory and foam characteristics, even when formulated with less than 2% by weight of structuring agent derived from palm kernel oil. Consistent with the invention, less than 40% by weight of the total weight of the anionic surfactant in the composition is an isethionate and smooth washing compositions (free from crystallization) were observed.

[108] Qualified panelists who washed their hands and forearms Petition 870250095184, dated 10 / 17 / 2025, pp. 77 / 83 34 / 35 with the compositions of the invention concluded that the compositions lathered and rinsed at least as well as traditional washing compositions formulated with more than 4% by weight of lauric acid, a lamellar structuring agent derived from palm kernel oil. Table I Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sodium Methyl Lauroyl Taurate 8.5 8.5 11.5 5.5 6.4 Sodium Lauroyl Isethionate 0 0 0 0 2.1 Lauramine Oxide 8.5 8.5 5.5 11.5 8.5 Stearoyl Lactate 0 0 0 0 1.3 Lauric Acid 0 0.65 0.65 0.65 0 Washing Structure* Isotropic / Crystalline Lamellar Lamellar Lamellar Lamellar * Confirmed through visual and physical inspection of the samples: The isotropic / crystalline washing composition was transparent with granular precipitate, while the lamellar composition was opaque / pearlescent, a smooth and uniform washing composition. Example II

[109] In this Example II, the washing compositions, Samples 6 to 9, were prepared similarly to that described in Example I, but with ingredients as shown in Table II. The washing compositions were made with the surfactants described. Hydrogenated soybean oil was present at 3% and non-hydrogenated soybean oil was present at 2% by weight of the composition. Polyquaternium 67 was present at 0.8% by weight and Guar (Jaguar C14S) was present at 0.2% by weight of the composition. Caprylyl Glycol was used at 0.3% by weight and stearic acid was used at 0.25% by weight in the composition. Humectant was added at 1% by weight of the composition and 0.05% by weight of chelating agent. Fragrance was added at 1.15% by weight, and pH adjusters were used to achieve a pH between 6.5 and 7.5. The washing solutions contained approximately 70% water by weight. Petition 870250095184, dated 10 / 17 / 2025, pp. 78 / 83 35 / 35 Sodium benzoate was used to preserve the compositions (0.5% by weight). Starch (Pure Gel B990) was used at 4.5% by weight. The viscosities for the compositions consistent with the invention were approximately 80,000 mPa-s.

[110] As can be seen from the data presented in Table II, when surfactants are selected according to the invention, the resulting washing compositions are surprisingly stable in the lamellar phase and have excellent sensory and foam characteristics, even when formulated with less than 2% by weight of structuring agent derived from palm kernel oil. Consistent with the invention, less than 40% by weight of the total weight of the anionic surfactant in the composition is an isethionate and smooth washing compositions (free from crystallization) are observed.

[111] Qualified panelists who washed their hands and forearms with the compositions of the invention concluded that the compositions lathered and rinsed at least as well as traditional washing compositions formulated with more than 4% by weight of lauric acid, a lamellar structuring agent derived from palm kernel oil. Table II: Sample 6 Sample 7 Sample 8 Sample 9 Sodium Methyl Lauroyl Taurate 8.5 0 0 0 Sodium Lauroyl Glycinate 0 8.5 8.5 8.5 Lauramine Oxide 8.5 8.5 8.5 8.5 Lauric Acid 1.3 0 0.65 1.3 Washing Structure* Isotropic / Crystalline Lamellar Lamellar * Confirmed through visual and physical inspection of the samples: The isotropic / crystalline washing composition was transparent with granular precipitate, while the lamellar composition was opaque / pearlescent, a smooth and uniform washing composition. Petition 870250095184, dated 10 / 17 / 2025, pp. 79 / 83

Claims

1 / 3 Claims 1. A LAMELLAR WASHING COMPOSITION characterized by comprising: a) anionic surfactant with less than 40% by weight of isethionate; b) amphoteric surfactant, zwitterionic surfactant or both; c) 0 to 5% by weight of non-ionic surfactant; d) lamellar structuring agent; e) water, wherein: i) the composition has a viscosity of at least 30,000 mPas; ii) the composition has a pH of at least 5; iii) the composition comprises no more than 3% by weight of a sulfate comprising surfactant; iv) at least 60% by weight of the amphoteric surfactant and / or the zwitterionic surfactant are independently free of an alkyl starch bridge; 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 hydrophilic moiety that is -N+-(R)2-(C(R1)2)xCOO- or -N+-(R)2-(C(R2)2)y-SO3- where each R is independently H or a C1-3 alkyl; each R1 is independently H or a C1-3 alkyl;x is an integer from 1 to 3; each R2 is independently H, OH or a C1-4 alkyl and y is an integer from 1 to 6; and vii) the lamellar structure comprises a) 0 to 2% by weight of a C6 to C14 (preferably C8 to C14 or more preferably a C8 to C12) carboxylic acid or alcohol or amide derivative or b) 0 to 2.85% by weight of a C16-C20 lactylate or both and with the proviso that a and b cannot be simultaneously 0 and if only a or b are present, a is present at least at 0.4% by weight and b is present at least at 0.5% by weight.

2. A lamellar washing composition, according to claim 1, characterized by the anionic surfactant in the composition comprising less than 35% and, preferably, from 0.1 to 20% and, preferably, 0.0% by weight of isethionate.

3. A lamellar washing composition, according to any of the preceding claims, characterized in that the anionic surfactant comprises a taurate, glycinate, glutamate, or a mixture thereof.

4. A lamellar washing composition, according to any of the preceding claims, characterized in that the composition comprises a taurate or glycinate surfactant and comprises less than 1% by weight of sulfate-based surfactant.

5. A lamellar washing composition, according to any of the preceding claims, characterized in that the zwitterionic surfactant is present and comprises lauryl betaine, myristyl betaine, palmityl betaine, stearyl betaine, oleyl betaine, lauryl hydroxysultaine, myristyl hydroxysultaine, palmityl hydroxysultaine, stearyl hydroxysultaine, oleyl hydroxysultaine, or a mixture thereof.

6. A lamellar washing composition, according to any of the preceding claims, characterized by the presence of an amphoteric surfactant and comprising cocoylamine oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide, or mixtures thereof.

7. Lamellar washing COMPOSITION, as per Petition 870250095184, dated 10 / 17 / 2025, p. 81 / 83 3 / 3 any of the previous claims, characterized by the pH of the composition being 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. A lamellar washing COMPOSITION, according to any of the preceding claims, characterized in that the viscosity of the composition is from 35,000 to 345,000 mPa-s and is substantially free of at least one paraben, hydantoin, isothiazolinone, dioxane, or silicone oil.

9. A lamellar washing composition, according to any of the preceding claims, characterized in that the composition does not contain sulfate-based surfactants, parabens, hydantoin, isothiazolinone, dioxane, or silicone oil, and contains a preservative.

10. A lamellar washing COMPOSITION, according to any of the preceding claims, characterized by the structuring agent derived from palm kernel oil being present as the sole structuring agent at 0.5 to 1.45% by weight of the composition.

11. A lamellar washing composition, according to any of the preceding claims, characterized by the presence of C16-C20 lactylate.

12. USE OF AN ANIONIC SURFACTANT characterized by comprising less than 40% by weight of isethionate in combination with an amphoteric surfactant, a zwitterionic surfactant, or both to make a lamellar wash composition substantially free of or free from palm kernel oil-derived lamellar structuring agent, the amphoteric surfactant and the zwitterionic surfactants each being independently at least 60% free of an amidoalkyl bridge. Petition 870250095184, dated 10 / 17 / 2025, pp. 82 / 83