A soluble solid structure having a first layer and a second layer

Abstract

The present invention relates to a dissolvable solid structure comprising: (a) a first layer, the first layer comprising, by weight of the first layer, 20% to 100% of a first water-soluble polymer by weight of the first layer; and (b) a second layer comprising, by weight of the first layer, 1% to 50% of a second water-soluble polymer by weight of the second layer, a high melting point fatty material having a carbon chain length of C12 to C22 or a mixture thereof, the melting point being above 25° C., and a cationic surfactant. The present invention provides, for example, improved flexibility and solubility in compositions while maintaining sufficient structural integrity during manufacture.

Description

Technical Field

[0001] The present invention relates to a soluble solid structure comprising: (a) a first layer comprising from about 20% to about 100% by weight of a first water-soluble polymer of the first layer; and (b) a second layer comprising from about 1% to about 50% by weight of a second water-soluble polymer of the second layer, and afatty substance with high melting point having a carbon chain length of C12-C22 or a mixture thereof, the melting point of which is above 25°C, and a cationic surfactant. The present invention provides improved flexibility in compositions while maintaining certain structural strength during manufacturing, for example.

Background Art

[0002] Many personal care products and other consumer products currently available on the market are sold in liquid form. Although liquid products are widely used, they often involve trade-offs in terms of packaging, storage, transportation, and ease of use. Liquid consumer products are typically sold in bottles, which increases costs and packaging waste, much of which ultimately ends up in landfill sites.

[0003] Hair care products in the form of soluble solid structures present an attractive form for consumers. Entries into the market for soluble solid structures can include soluble films, compressed powders in solids, fibrous structures, porous foams, soluble deformable solids, powders, and the like.

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, there is still a need for such soluble solid structures that deliver at least one of the following. • The flexibility of the composition is improved, and in particular, the polymer content can be reduced in at least one of the layers while maintaining a specific structural strength during manufacturing and ease of cutting during and after manufacturing. • It is possible to incorporate into one layer a component that is incompatible with at least one component from another layer. • Enables improved bonding of particles in articles. • Improved aesthetic features selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof. [Means for solving the problem]

[0005] The present invention relates to a soluble solid structure, a. A first layer comprising a first water-soluble polymer in an amount of about 20% to about 100% by weight of the first layer, b. The subject is a soluble solid structure comprising a second layer comprising a second water-soluble polymer in an amount of about 1% to about 50% by weight of the second layer, a high-melting-point fatty substance having a carbon chain length of C12 to C22 or a mixture thereof, the high-melting-point fatty substance having a melting point above 25°C, and a cationic surfactant. [Brief explanation of the drawing]

[0006] [Figure 1] This is a schematic diagram of an example of a process for producing the fibrous elements of the present invention. [Figure 2] Figure 1 is a schematic, enlarged view of an example of a die used in the process. [Figure 3] This is a schematic diagram of an example of a process for producing an example of a fibrous structure according to this disclosure. [Figure 4] Figure 3 is a schematic, enlarged view of an example of a die used in the process. [Figure 5] This is a schematic cross-sectional view of another example of a fibrous structure according to the present disclosure. [Modes for carrying out the invention]

[0007] definition As used herein, a soluble solid structure may be referred to as a "soluble solid structure," a "structure," or a "soluble structure."

[0008] As used herein, "solubility" means that a solubility solid structure dissolves completely in water or, when mixed in water in accordance with a manual dissolution test, yields a homogeneous dispersion. Solubility solid structures have manual dissolution values ​​of approximately 1 to 30 strokes, or approximately 2 to 25 strokes, or approximately 3 to 20 strokes, or approximately 4 to 15 strokes, as measured by the manual dissolution method.

[0009] As used herein, "flexibility" means that a soluble solid structure satisfies the distance to the maximum force value considered herein.

[0010] As used herein, "fiber structure" means a structure comprising one or more fibrous elements and optionally one or more particles. A fibrous structure as described herein may mean an association of fibrous elements and optionally particles that together form a functional structure, such as an integral structure.

[0011] The fiber structure of the present invention may have a multi-ply fiber structure comprising two or more different fiber structure plies. Each ply may be the same as or different from the other plies.

[0012] A layer containing fibrous elements may be referred to as a ply. A ply may be a fibrous structure that is homogeneous or layered, as described herein.

[0013] A single-ply fiber structure, or a multi-ply fiber structure containing one or more fiber structure plies as described herein, shall have a basis weight of 5000 g / m² when measured according to the basis weight test method described herein. 2It may show a basis weight less than. For example, the single-ply fiber structure or multi-ply fiber structure according to the present invention, when measured in accordance with the basis weight test method, is 10 g / m 2 exceeding to about 5000 g / m 2 and / or 10 g / m 2 exceeding to about 3000 g / m 2 and / or 10 g / m 2 exceeding to about 2000 g / m 2 and / or 10 g / m 2 exceeding to about 1000 g / m 2 and / or 20 g / m 2 exceeding to about 800 g / m 2 and / or 30 g / m 2 exceeding to about 600 g / m 2 and / or 50 g / m 2 exceeding to about 500 g / m 2 and / or 300 g / m 2 exceeding to about 3000 g / m 2 and / or 500 g / m 2 exceeding to about 2000 g / m 2 may show a basis weight of.

[0014] In one embodiment, the fiber structure of the present invention is an "integrated fiber structure".

[0015] As used herein, an "integrated fiber structure" is an arrangement comprising two or more and / or three or more fiber elements that intertwine with each other or associate with each other in another way to form a fiber structure and / or a fiber structure ply. The integrated fiber structure of the present invention can be one or more plies within a multi-ply fiber structure. In one embodiment, the integrated fiber structure of the present invention can include three or more different fiber elements. In another embodiment, the integrated fiber structure of the present invention can include two or more different fiber elements.

[0016] As used herein, an "article" refers to a consumer use unit, a consumer unit dose unit, a consumer use salable unit, a single dose unit, or other use forms including an integrated fiber-soluble solid structure and / or one or more fiber structures of the present invention.

[0017] As used herein, "fiber element" means an elongated particle having a length significantly greater than its average diameter, i.e., a length-to-average diameter ratio of at least about 10. A fiber element may be a filament or a fiber. In one embodiment, the fiber element is a single fiber element, rather than a yarn containing multiple fiber elements.

[0018] The fibrous elements of the present invention may be spun from a filament-forming composition, also called a fibrous element-forming composition, through a suitable spinning process operation such as melt-blown, spunbond, electrospinning, and / or spinning.

[0019] The fibrous elements of the present invention may be one-component (a single, integrated solid piece rather than two different parts such as a core / sheath two-component structure) and / or multi-component. For example, the fibrous elements may include two-component fibers and / or filaments. The two-component fibers and / or filaments may be in any form, such as side-by-side, core-sheath, or sea-island.

[0020] As used herein, "filament" means the elongated particles described above, having a length of 5.08 cm (2 inches) or more, and / or 7.62 cm (3 inches) or more, and / or 10.16 cm (4 inches) or more, and / or 15.24 cm (6 inches) or more. Filaments are typically considered to be essentially continuous or substantially continuous. Filaments are relatively longer than fibers. Non-limiting examples of filaments include meltblown filaments and / or spunbond filaments.

[0021] As used herein, “fiber” means the elongated particles described above, which are less than 5.08 cm (2 inches) in length and / or less than 3.81 cm (1.5 inches) and / or less than 2.54 cm (1 inch). Fibers are typically considered to be discontinuous in nature. Non-limiting examples of fibers include staple fibers produced by spinning a filament or filament tow and then cutting the filament or filament tow into pieces less than 5.08 cm (2 inches) in length to produce fibers. Thus, references to filaments herein, unless otherwise specified, also include fibers made from such filaments. Fibers are typically considered to be discontinuous in nature with respect to filaments, which are typically considered to be continuous in nature.

[0022] "Filament-forming composition" and / or "fiber element-forming composition" as used herein means a composition suitable for producing the fibrous elements of the present invention by a melt-blown method and / or a spunbond method, etc. A filament-forming composition comprises one or more filament-forming materials that exhibit properties suitable for spinning the materials into fibrous elements. In one embodiment, the filament-forming material comprises a polymer. In addition to one or more filament-forming materials, the filament-forming composition may also comprise one or more additives, for example, one or more activators. In addition, the filament-forming composition may comprise one or more polar solvents, such as water, in which one or more, for example, all of the filament-forming materials and / or one or more, for example, all of the activators, are dissolved and / or dispersed before spinning fibrous elements such as filaments derived from the filament-forming composition.

[0023] As used herein, “porous” means that a soluble solid structure has spaces, voids, or gaps (collectively referred to herein as “pores”) resulting from a microscopic and complex three-dimensional structure that provides channels, pathways, or passages through which a liquid can flow.

[0024] As used herein, "porosity" and "percent porosity" are used interchangeably, and each refers to a measure of the void volume of a soluble solid structure. [1 - ([Basis weight of soluble solid structure] / [Thickness of soluble solid structure × Density of dry material of the block])] × 100% It is calculated as follows: The units are adjusted so that they are simplified and multiplied by 100% to provide the percentage porosity.

[0025] A soluble solid structure may be referred to herein as a "soluble solid structure" or "soluble structure."

[0026] The term "molecular weight" refers to the weight-average molecular weight unless otherwise specified. Molecular weight is measured using gel permeation chromatography (GPC), an industry standard method.

[0027] When used herein, articles such as "a" and "an" are understood to mean one or more of the claims or descriptions when used in the claims.

[0028] As used herein, the terms “include,” “includes,” and “including” are intended to be non-limiting.

[0029] To determine the values ​​of each parameter of the applicant's invention, including those discussed in the following section on soluble structures—physical properties, the methods disclosed in the section on test methods of this application should be used.

[0030] All percentages and ratios are calculated on a weight basis unless otherwise specified. All percentages and ratios are calculated based on the total composition unless otherwise specified.

[0031] It should be understood that all maximum numerical limits given throughout this specification include all lower numerical limits as if they were explicitly stated herein. All minimum numerical limits given throughout this specification include all higher numerical limits as if they were explicitly stated herein. All numerical ranges given throughout this specification include all narrow numerical ranges that fall within such broad numerical ranges as if they were explicitly stated herein.

[0032] Dissolvable solid structure (dissolvable solid article) The soluble solid structure of the present invention comprises a first layer containing a first water-soluble polymer and a second layer containing a second water-soluble polymer. Details of each layer and polymer will be described later.

[0033] In one embodiment of the above-described soluble solid structure, the first layer may comprise a first water-soluble polymer and a component incompatible with at least one of the above-described components in the second layer, and the second layer may comprise a second water-soluble polymer, a high-melting-point fatty substance having a carbon chain length of C12 to C22 or a mixture thereof, having a melting point greater than 25°C, and a cationic surfactant.

[0034] In one embodiment, in a soluble solid structure having any of the above features, at least one of the first layer and the second layer may further contain particles, preferably the second layer may further contain particles.

[0035] In one embodiment, in a soluble solid structure having any of the above features, the first layer may have an aesthetic feature selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof.

[0036] The soluble solid structure of the present invention is preferably a personal care product, more preferably a hair care product, even more preferably a rinse-off hair care product, and more preferably a rinse-off hair care product containing a non-sulfate surfactant.

[0037] First layer and first water-soluble polymer The first layer comprises about 20% to about 100% by weight of the first water-soluble polymer, preferably about 50% to about 100% by weight, more preferably about 90% to about 100% by weight, and even more preferably about 95% to about 100% by weight, and still more preferably about 99% to about 100% by weight of the first water-soluble polymer.

[0038] The first water-soluble polymer may be a natural or synthetic polymer, provided that the first layer has the scaling fracture tensile energy absorption (scaling fracture TEA) value described below. In other words, the first water-soluble polymer may be any polymer, insofar as such a polymer can be converted into a fibrous layer, which may have sufficient strength to allow processing in later stages of the manufacturing process, i.e., the layer may exhibit sufficient strength to support the second layer during manufacturing while allowing cutting of such a layer or article.

[0039] Preferably, the first water-soluble polymer is (i) Polyvinyl alcohol having a molecular weight of approximately 23,000 g / mol to approximately 45,000 g / mol, preferably approximately 25,000 g / mol to approximately 40,000 g / mol, more preferably approximately 26,000 g / mol to approximately 35,000 g / mol. (ii) A mixture of polyvinyl alcohols having an average molecular weight as a mixture of about 23,000 g / mol to about 45,000 g / mol, preferably about 25,000 g / mol to about 40,000 g / mol, and more preferably about 26,000 g / mol to about 35,000 g / mol. (iii) A heat-bound starch containing or not containing a plasticizer, wherein the molecular weight is about 1,000,000 g / mol to about 50,000,000 g / mol, preferably about 2,000,000 g / mol to about 40,000,000 g / mol, (iv) Polyvinylpyrrolidone, its copolymer, or mixture thereof (for example, the trade name PVP K60 manufactured by Ashland, Inc., having approximately 400,000 g / mol MW), (v) Polyvinyl oxazoline, its copolymers, or mixtures thereof (vi) Poly2-ethyl-2-oxazoline, its copolymers, or mixtures thereof, and (vii) Selected from the group consisting of polyvinyl caprolactam, its copolymer, or mixtures thereof.

[0040] Among these, the more preferred first water-soluble polymer is selected from (ii) a mixture of polyvinyl alcohols.

[0041] The first water-soluble polymer in the first layer may be the same as or different from the second polymer in the second layer.

[0042] In the present invention, the term "water-soluble polymer" is broad enough to include both water-soluble and water-dispersible polymers and is defined as a polymer having a solubility in water measured at at least about 0.1 grams / liter (g / L) at 25°C. In some embodiments, this polymer has a solubility in water ranging from about 0.1 grams / liter (g / L) to about 500 grams / liter (g / L) measured at 25°C (this indicates the formation of macroscopically isotropic or transparent, colored or colorless solutions). The polymers for producing these solids may be of synthetic or natural origin and may be modified by chemical reactions. They may or may not be film-forming. These polymers should be physiologically acceptable, i.e., the polymers should be compatible with skin, mucous membranes, hair, and scalp.

[0043] The terms “water-soluble polymer” and “polymer structuring agent” are used interchangeably herein. Furthermore, whenever the singular term “polymer” is used, it should be understood that this term is broad enough to include one polymer or a mixture of two or more polymers. For example, when a mixture of polymers is used, the polymer solubility referred to herein will refer to the solubility of the polymer mixture, rather than the individual solubility of each polymer.

[0044] Preferably, the first layer is substantially free of surfactants, particularly when the first layer has an aesthetic feature selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof. In this invention, “substantially free of surfactants” means that the composition does not contain surfactants, or, if the composition contains surfactants, the level of such surfactants is very low. In this invention, the total level of such surfactants, if present, is preferably 1% by weight or less of the composition, more preferably 0.5% by weight or less, and more preferably 0.1% by weight or less. Most preferably, the total level of such surfactants is 0% by weight of the composition. Surfactants as used herein mean any type of ionic surfactant, such as anionic, cationic, amphoteric, and zwitterionic surfactants. Surfactants as used herein also include nonionic surfactants having an HLB greater than (but not exceeding 9).

[0045] The first layer may further contain an oily component having an HLB of 9 or less, preferably 3 or less, such as oleic acid. The oily component may be included in the first layer at a level of about 0.01% to about 2% by weight, preferably about 0.1% to about 1% by weight.

[0046] Scaling fracture TEA The first layer may preferably have a scaling fracture tensile energy absorption (scaling fracture TEA) of about 10 g / cm to about 185 g / cm, preferably about 20 g / cm to about 180 g / cm, and more preferably about 25 g / cm to about 175 g / cm.

[0047] Scaled fracture TEA is the fracture TEA scaled to a common basis weight, i.e., 50 gsm in this specification. Since fracture TEA depends on the amount of material present in either the thickness or the cross-sectional area, this allows for a comparison of the strength of materials with different basis weights. The method for measuring fracture TEA is described below.

[0048] Method for measuring fracture TEA Sample preparation: A steel rule die on a 12"x12" plywood base punches out strips from the material. Equilibrium: At 73°F and 50%RH for at least 15 minutes. Crosshead speed: 2 inches / minute Sample width: 1 inch Gauge length: 1 inch Data analysis: Fracture TEA (area under the curve at the fracture point, as outlined in fracture stretch).

[0049] Second layer and second water-soluble polymer The second layer comprises about 1% to about 50% by weight, preferably about 1% to about 20% by weight, more preferably about 1% to about 10% by weight, and more preferably about 2% to about 6% by weight, and even more preferably about 3% to about 5% by weight of the second water-soluble polymer.

[0050] The second soluble polymer can be any polymer, preferably different from the first polymer in the first layer. The structuring agent has a weight-average molecular weight of about 10,000 to about 6,000,000 g / mol. A structuring agent having a weight-average molecular weight of about 3,000,000 g / mol to about 5,000,000 g / mol is included at a level of about 3% to about 6% by weight. Alternatively, a structuring agent having a weight-average molecular weight of about 50,000 g / mol to about 100,000 g / mol may be included at a level of about 30% to about 50% by weight.

[0051] Preferably, the second water-soluble polymer is selected from the group consisting of polyvinylpyrrolidone, preferably polyvinylpyrrolidone copolymer, polydimethylacrylamide, preferably polydimethylacrylamide copolymer, poly(vinyl oxazoline), preferably poly2-ethyl-2-oxazoline, polyvinylcaprolactam copolymer, preferably polyvinylcaprolactam, and combinations thereof.

[0052] As used herein, “vinylpyrrolidone copolymer” (and as used by reference, “copolymer”) refers to a polymer having the following structure (I):

[0053] [ka]

[0054] In structure (I), n is an integer such that the polymer structuring agent has a degree of polymerization such that it has the properties described herein. For clarity, the use of the term “copolymer” is intended to convey that vinylpyrrolidone monomers may copolymerize with other non-limiting monomers such as vinyl acetate, alkylated vinylpyrrolidone, vinyl oxazoline, vinyl caprolactam, vinyl valerolactam, vinylimidazole, acrylic acid, methacrylate, acrylamide, methacrylamide, dimethacrylamide, alkylaminomethacrylamide, and alkylaminomethacrylamide monomers.

[0055] For example, a suitable polymer for use is PVP K120 from Ashland Inc., which has a weight-average molecular weight of approximately 3,500,000 g / mol. It is soluble in oil and water, and fibers can be formed and aggregated on a belt. Further suitable polymers include polyvinylpyrrolidone copolymers such as Ganex®, or PVP / VA copolymer from Ashland Inc. (weight-average molecular weight of approximately 50,000 g / mol), which also behave as suitable structuring agents, but due to their lower weight-average molecular weight, higher levels are used for effectiveness. Further suitable polymers include poly(2-ethyl-2-oxazoline), polyvinylcaprolactam, and polydimethylacrylamide, as well as copolymers thereof.

[0056] Dispersant The second layer may further contain a dispersant to increase the wetting, hydration, and / or dispersion of the conditioning material. The dispersant may be included in the second layer at a level of about 1% to about 30% by weight, or about 5% to about 15% by weight, or about 5% to about 10% by weight. Surfactants from nonionic class alkylglucamides can improve wetting and hydration when added to solid conditioning formulations. Alkylglucamide surfactants contain a hydrophobic tail of about 8 to 18 carbon atoms and a nonionic head group of glucamide. With respect to glucamide, the presence of the amide group and the hydroxyl group provides sufficient polarity to balance the hydrophobic carbon tail in such a way that the surfactant in the conditioning oil is soluble, and also results in rapid dispersion of the conditioning components upon exposure to water. Other similar dispersants include, but are not limited to, reverse alkylglucamides, gluconamides, cocoamyodopropyl betaine, alkylglucosides, triethanolamine, cocamide MEA, and mixtures thereof.

[0057] Alkylglucamide surfactants can provide hair styling effects, particularly when used with polyvinylpyrrolidone. Such effects of alkylglucamide surfactants can be observed regardless of the product form, i.e., not only from solid forms such as soluble solid structures, but also from liquid forms.

[0058] Cationic surfactants The second layer contains a cationic surfactant, which may be present in the second layer at a level of approximately 1% to 60% by weight, or approximately 10% to 50% by weight, or approximately 20% to 40% by weight.

[0059] Cationic surfactants useful herein may be a single cationic surfactant or a mixture of two or more cationic surfactants. Cationic surfactants may be selected from, but are not limited to, mono-long-chain alkyl quaternization ammonium salts, combinations of mono-long-chain alkyl quaternization ammonium salts and di-long-chain alkyl quaternization ammonium salts, mono-long-chain alkylamines, combinations of mono-long-chain alkylamines and di-long-chain alkyl quaternization ammonium salts, and combinations of mono-long-chain alkylamines and mono-long-chain alkyl quaternization ammonium salts, tertiary amines, and combinations thereof.

[0060] Monolong-chain alkylamines The mono-long-chain alkylamines useful herein are those having one long alkyl chain with 12 to 30 carbon atoms, or 16 to 24 carbon atoms, or 18 to 22 alkyl groups. Other mono-long-chain alkylamideamines useful herein include mono-long-chain alkylamideamines. Primary, secondary, and tertiary aliphatic amines are useful.

[0061] Tertiary amidoamines having alkyl groups consisting of approximately 12 to 22 carbon atoms are suitable for use in soluble solid structures. Examples of tertiary amidoamines include stearamidopropyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitoamidopropyldimethylamine, palmitoamidopropyldiethylamine, palmitoamidoethyldiethylamine, palmitoamidoethyldimethylamine, behenamidopropyldimethylamine, behenamidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidomidopropyldimethylamine, arachidomidopropyldiethylamine, arachidomidoethyldiethylamine, arachidomidoethyldimethylamine, and diethylaminoethylstearamide. Amines useful in the present invention are disclosed in U.S. Patent No. 4,275,055 (Nachtigal et al.).

[0062] These amines can be used in combination with acids such as l-glutamic acid, lactic acid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid, tartaric acid, citric acid, l-glutamic acid hydrochloride, maleic acid, and mixtures thereof, or with acids such as l-glutamic acid, lactic acid, and citric acid in a molar ratio of about 1:0.3 to about 1:2, or about 1:0.4 to about 1:1.

[0063] Mono-long-chain alkyl quaternary ammonium salts The mono-long-chain alkyl quaternization ammonium salts useful herein have one long alkyl chain with 12 to 30 carbon atoms, or 16 to 24 carbon atoms, or C18 to C22 alkyl groups. The remaining group bonded to the nitrogen is independently selected from alkyl groups with 1 to about 4 carbon atoms, or alkoxy groups, polyoxyalkylene groups, alkylamide groups, hydroxyalkyl groups, aryl groups, or alkylaryl groups having up to about 4 carbon atoms.

[0064] A mono-long-chain alkyl quaternary ammonium salt useful in this specification has formula (I).

[0065] [ka] In the formula, R 75 , R 76 , R 77 , and R 78 One of these is selected from an alkyl group with 12 to 30 carbon atoms, or an aromatic group, alkoxy group, polyoxyalkylene group, alkylamide group, hydroxyalkyl group, aryl group, or alkylaryl group having up to approximately 30 carbon atoms, R 75 , R 76 , R 77 , and R 78 The remainder of these is independently selected from alkyl groups with 1 to about 4 carbon atoms, or alkoxy groups, polyoxyalkylene groups, alkylamide groups, hydroxyalkyl groups, aryl groups, or alkylaryl groups having up to about 4 carbon atoms, X - The alkyl group is a salt-forming anion selected from groups such as halogens (e.g., chloride ions, bromide ions), acetate ions, citrate ions, lactate ions, glycolate ions, phosphate ions, nitrate ions, sulfonate ions, sulfate ions, alkyl sulfate ions, and alkyl sulfonate ions. Alkyl groups can contain carbon and hydrogen atoms, as well as other groups such as ether and / or ester linking groups, and amino groups. Longer-chain alkyl groups, for example, those with about 12 or more carbon atoms, can be saturated or unsaturated. 75 , R 76 , R 77 , and R 78 One of these may be selected from alkyl groups with 12 to 30 carbon atoms, 16 to 24 carbon atoms, 18 to 22 carbon atoms, or 22 carbon atoms, R 75 , R 76 , R 77 , and R 78The remaining components can be independently selected from CH3, C2H5, C2H4OH, and combinations thereof, while X can be selected from the group consisting of Cl, Br, CH3OSO3, C2H5OSO3, and combinations thereof.

[0066] Non-limiting examples of such mono-long-chain alkyl quaternary ammonium salt cationic surfactants include behenyltrimethylammonium salt, stearyltrimethylammonium salt, cetyltrimethylammonium salt, and hydrogenated tallow alkyltrimethylammonium salt.

[0067] Dilong-chain alkyl quaternary ammonium salts When used, di-long-chain alkyl quaternization ammonium salts may be combined with mono-long-chain alkyl quaternization ammonium salts and / or mono-long-chain alkylamine salts in weight ratios of 1:1 to 1:5, 1:1.2 to 1:5, or 1:1.5 to 1:4, from the viewpoint of the stability of the rheological effect and conditioning effect.

[0068] The di-long-chain alkyl quaternary ammonium salts useful herein have two long alkyl chains, each containing 12 to 30 carbon atoms, 16 to 24 carbon atoms, or 18 to 22 carbon atoms. Such di-long-chain alkyl quaternary ammonium salts useful herein have formula (I).

[0069] [ka] In the formula, R 71 , R 72 , R 73 , and R 74 Two of these are selected from aliphatic groups with 12 to 30 carbon atoms, 16 to 24 carbon atoms, or 18 to 22 carbon atoms, or aromatic groups, alkoxy groups, polyoxyalkylene groups, alkylamide groups, hydroxyalkyl groups, aryl groups, or alkylaryl groups having up to approximately 30 carbon atoms, R 71 , R 72 , R 73, and R 74 The remaining group is independently selected from an aliphatic group having 1 to about 8 carbon atoms, or 1 to 3 carbon atoms, or an aromatic group, alkoxy group, polyoxyalkylene group, alkylamide group, hydroxyalkyl group, aryl group, or alkylaryl group having up to about 8 carbon atoms, X - This is a salt-forming anion selected from the group consisting of halide ions such as chloride ions and bromide ions, C1-C4 alkyl sulfate ions such as methosulfate ions and ethosulfate ions, and mixtures thereof. In addition to carbon and hydrogen atoms, the aliphatic group may contain other groups such as ether linking groups and amino groups. Longer aliphatic groups, for example, those with about 16 or more carbon atoms, may be saturated or unsaturated. 71 , R 72 , R 73 , and R 74 Two of these can be selected from alkyl groups with 12 to 30 carbon atoms, 16 to 24 carbon atoms, or 18 to 22 carbon atoms, R 71 , R 72 , R 73 , and R 74 The remaining ones are independently selected from CH3, C2H5, C2H4OH, CH2C6H5, and combinations thereof.

[0070] Suitable di-long-chain alkyl cationic surfactants include, for example, dialkyl(14-18)dimethylammonium chloride, ditarrowalkyldimethylammonium chloride, dihydro-added ditarrowalkyldimethylammonium chloride, distearyldimethylammonium chloride, and dicetyldimethylammonium chloride.

[0071] High melting point fatty compounds The second layer contains high-melting-point fatty compounds. These fatty compounds may be present in the second layer at levels of approximately 10% to 85% by weight, 20% to 70% by weight, 50% to 70% by weight, or 10% to 20% by weight. The fatty compounds may be selected from, but are not limited to, aliphatic amphiphilic substances, aliphatic alcohols, fatty acids, aliphatic amides, aliphatic esters, and combinations thereof.

[0072] The useful high-melting-point fatty compounds described herein have melting points of 25°C or higher, or 40°C or higher, or 45°C or higher, or 50°C or higher, from the viewpoint of the stability of the emulsion, particularly the gel matrix. Such melting points are approximately 90°C, approximately 80°C, approximately 70°C, or approximately 65°C, from the viewpoint of easier production and easier emulsification. High-melting-point fatty compounds can be used as single compounds or as a blend or mixture of at least two high-melting-point fatty compounds. When used as such a blend or mixture, the melting points described above refer to the melting points of the blend or mixture.

[0073] The useful high-melting-point alipid compounds described herein are selected from the group consisting of aliphatic alcohols, fatty acids, aliphatic alcohol derivatives, fatty acid derivatives, aliphatic amides, and mixtures thereof. Those skilled in the art will understand that, in some cases, compounds disclosed in this section may belong to two or more classifications; for example, some aliphatic alcohol derivatives may also be classified as fatty acid derivatives. However, given classifications are not intended to limit the specific compounds, but are made for the convenience of classification and nomenclature. Furthermore, those skilled in the art will understand that certain compounds with specific required carbon atoms, depending on the number and position of double bonds, and the length and position of branching, may have melting points below those described above. Such low-melting-point compounds are not intended to be included in this section. Non-limiting examples of high-melting-point compounds can be found in the International Cosmetic Ingredient Dictionary, Fifth Edition, 1993, and the CTFA Cosmetic Ingredient Handbook, Second Edition, 1992.

[0074] Among various high-melting-point alipid compounds, aliphatic alcohols can be used in the compositions described herein. The aliphatic alcohols useful herein are those having about 14 to about 30 carbon atoms, or about 16 to about 22 carbon atoms. These aliphatic alcohols are saturated and may be linear or branched alcohols.

[0075] Suitable aliphatic alcohols include, but are not limited to, cetyl alcohol (with a melting point of about 56°C), stearyl alcohol (with a melting point of about 58-59°C), behenyl alcohol (with a melting point of about 71°C), and mixtures thereof. These compounds are known to have the melting points mentioned above. However, they often have lower melting points when supplied, because such supplied products are often mixtures of aliphatic alcohols with an alkyl chain length distribution, where the main alkyl chain is a cetyl group, a stearyl group, or a behenyl group.

[0076] Generally, in mixtures, the weight ratio of cetyl alcohol to stearyl alcohol is approximately 1:9 to 9:1, or approximately 1:4 to 4:1, or approximately 1:2.3 to 1.5:1.

[0077] When the combined amount of cationic surfactants and high-melting-point fatty compounds is used at a higher level, the mixture has a weight ratio of cetyl alcohol to stearyl alcohol of approximately 1:1 to approximately 4:1, or approximately 1:1 to approximately 2:1, or approximately 1.2:1 to approximately 2:1, in terms of maintaining an acceptable consumer usage amount. This weight ratio can also better condition damaged areas of hair.

[0078] plasticizer The first layer and / or the second layer optionally contain about 1% to about 25% by weight of plasticizer in the layer, in one embodiment about 3% to about 20% by weight of plasticizer in the layer, and in one embodiment about 5% to about 15% by weight of plasticizer in the layer.

[0079] When present within a structure, non-limiting examples of suitable plasticizers include polyols, copolyols, polycarboxylic acids, polyesters, and dimethicone copolyols.

[0080] Examples of useful polyols include, but are not limited to, glycerin, diglycerin, propylene glycol, ethylene glycol, butylene glycol, pentylene glycol, cyclohexanedimethanol, hexanediol, polyethylene glycol (200-600), sugar alcohols such as sorbitol, mannitol, and lactitol, isosorbide, glucamine, N-methylglucamine, and other monohydric and polyhydric low molecular weight alcohols (e.g., C2-C8 alcohols), fructose, glucose, sucrose, maltose, lactose, and high-fructose corn syrup solids, as well as monosaccharides, disaccharides, and oligosaccharides such as ascorbic acid.

[0081] Examples of polycarboxylic acids include, but are not limited to, citric acid, maleic acid, succinic acid, polyacrylic acid, and polymaleic acid.

[0082] Suitable polyesters include, but are not limited to, glycerol triacetate, acetylated monoglycerides, diethyl phthalate, triethyl citrate, tributyl citrate, acetyl triethyl citrate, and acetyl tributyl citrate.

[0083] Suitable examples of dimethicone copolyols include, but are not limited to, PEG-12 dimethicone, PEG / PPG-18 / 18 dimethicone, and PPG-12 dimethicone.

[0084] Other suitable plasticizers include alkyl and allyl phthalates, naphthalates, lactates (e.g., sodium salts, ammonium salts, and potassium salts), Sorbeth-30, urea, lactic acid, sodium pyrrolidone carboxylic acid (PCA), sodium hyaluronate or hyaluronic acid, soluble collagen, denatured proteins, monosodium L-glutamate, α- and β-hydroxy acids such as glycolic acid, lactic acid, citric acid, maleic acid, and salicylic acid, polymer plasticizers such as polyglyceryl methacrylate and polyquaternium, proteins, and amino acids such as glutamic acid, aspartic acid, and lysine, hydrogenated starch hydrolysates, and other low molecular weight esters (e.g., C2-C2). 10 Examples include, but are not limited to, esters of alcohols and acids, as well as any other water-soluble plasticizers known to those skilled in the art of the food and plastics industries, and mixtures thereof.

[0085] European Patent No. 0283165(B1) discloses suitable plasticizers, including glycerol derivatives such as propoxylated glycerol.

[0086] Selective components The first layer and / or the second layer may contain other optional components that are known to be used in the composition or are otherwise useful, provided that such optional materials are compatible with the selected essential materials described herein or otherwise do not excessively impair the product performance.

[0087] These optional ingredients are most typically those approved for use in cosmetics and listed in references such as the "CTFA Cosmetic Ingredient Handbook" (Second Edition, The Cosmetic, Toiletries, and Fragrance Association, Inc., 1992).

[0088] Further non-limiting examples of such optional ingredients include preservatives, fragrances or scents, colorants or dyes, conditioning agents, hair bleaches, thickeners, humectants, emollients, pharmacoactive substances, vitamins or nutrients, sunscreens, deodorants, sensory agents, plant extracts, nutrients, astringents, cosmetic particles, absorbent particles, adhesive particles, hair fixatives, fibers, reactive agents, whitening agents, sunscreens, anti-dandruff agents, fragrances, exfoliants, acids, makeup bases, humectants, enzymes, suspending agents, pH adjusters, hair colorants, hair perming agents, pigment particles, acne inhibitors, antibacterial agents, sunscreens, sunscreens, exfoliating particles, hair thickeners or hair growth agents, insecticides, shaving lotions, co-solvents or other additional solvents, and other similar materials. Further non-limiting examples of optional components include encapsulated fragrances such as β-cyclodetrin, polymer microcapsules, starch-encapsulated accords, and combinations thereof.

[0089] Suitable conditioning agents include high-melting-point fatty compounds, silicone conditioning agents, and cationic conditioning polymers. Suitable materials are discussed in U.S. Patent Publication Nos. 2008 / 0019935, 2008 / 0242584, and 2006 / 0217288.

[0090] Physical properties of soluble solid structures In the case of a fibrous structure, the structure contains a substantial amount of soluble fibers having an average diameter of less than about 150 micrometers, or less than about 100 micrometers, or less than about 10 micrometers, and / or less than about 1 micrometer, with a relative standard deviation of less than 100%, or less than 80%, or less than 60%, or less than 50%, such as in the range of 10% to 50%. As described herein, a substantial amount means at least 10% of all soluble fibers, or at least 25% of all soluble fibers, or at least 50% of all soluble fibers, or at least 75% of all soluble fibers. A substantial amount may also mean at least 99% of all soluble fibers. Alternatively, about 50% to about 100% of all soluble fibers may have an average diameter of less than about 10 micrometers. The soluble fibers produced by the method of this disclosure have a substantial amount of soluble fibers having an average diameter of less than about 1 micrometer, i.e., submicrometer fibers. In one embodiment, the soluble solid structure may be such that about 25% to about 100% of all soluble fibers have an average diameter of less than about 1 micrometer, or about 35% to about 100% of all soluble fibers have an average diameter of less than about 1 micrometer, or about 50% to about 100% of all soluble fibers have an average diameter of less than about 1 micrometer, or about 75% to about 100% of all soluble fibers have an average diameter of less than about 1 micrometer.

[0091] The percentage porosity of the soluble solid structure is at least about 25%, or in embodiments at least about 50%, or at least about 60%, or at least about 70%, or at least about 80%. The porosity of the soluble solid structure is about 99% or less, or about 98% or less, or about 95% or less, or about 90% or less. The porosity of the structure is determined according to the procedure described in the definition of "porosity" above.

[0092] It can accommodate pores of various effective sizes. The pore size distribution across the cross-section of the structure may be symmetrical or asymmetrical.

[0093] The structure may be flexible, and the distance to the maximum force may be approximately 6 mm to 30 mm. The distance to the maximum force may be approximately 7 mm to 25 mm, or approximately 8 mm to 20 mm, or approximately 9 mm to 15 mm.

[0094] In one embodiment, a structure can be characterized by its specific surface area. A structure is approximately 0.03 m². 2 / g~approx.0.25m 2 / g, or approximately 0.035m 2 / g~approx.0.22m 2 / g, or approximately 0.04m 2 / g ~ approx. 0.19m 2 / g, and / or approximately 0.045m 2 / g~approx.0.16m 2 It can have a specific surface area of ​​ / g.

[0095] The structure may be a flat, flexible structure in the form of a pad, strip, or tape, having a thickness of approximately 0.5 mm to 10 mm, or approximately 1 mm to 9 mm, or approximately 2 mm to 8 mm, or approximately 3 mm to 7 mm, as measured by the following methods. The structure may be a sheet having a thickness of approximately 5 mm to 6.5 mm. Alternatively, two or more sheets may be combined to form a structure having a thickness of approximately 5 mm to 10 mm.

[0096] The structure weighs approximately 200 grams / m². 2 ~Approximately 2,000 grams / m 2 , or approximately 400g / m 2 ~Approx. 1,200g / m 2 , or approximately 600g / m 2 ~Approx. 2,000g / m 2 , and / or approximately 700g / m 2 ~Approx. 1,500g / m 2 It can have a basis weight of [a certain amount].

[0097] The structure is approximately 0.08 g / cm³ 3 ~Approx. 0.40g / cm 3 , or approximately 0.08 g / cm³ 3 ~Approx. 0.38g / cm 3 , or approximately 0.10 g / cm³ 3 ~about 0.25g / cm 3 , or approximately 0.12 g / cm³ 3 ~Approx. 0.20g / cm 3 It can have a dry density of [value missing].

[0098] Manufacturing method - Fiber structure A non-limiting example of a method for producing fibrous elements, particularly for the first layer. A fibrous element, such as a filament, can be fabricated as shown in Figures 1 and 2. As shown in Figures 1 and 2, a method 20 for fabricating a fibrous element 10, such as a filament, is provided. a. A step of providing the fiber element forming composition 22 from a tank 24 or the like, b. The process includes spinning the fiber element forming composition 22 into one or more fiber elements 10, such as filaments, via a spinning die 26 or the like.

[0099] The fiber element forming composition can be transported between the tank 24 and the spinning die 26 via suitable piping 28, with or without the use of a pump 30. In one embodiment, a pressurized tank 24 suitable for batch operation is filled with a fiber element forming composition 22 suitable for spinning. A pump 30, such as the Zenith® PEP II, manufactured by the Zenith Pumps division of Colfax Corporation in Monroe, North Carolina, USA, with a capacity of 5.0 cubic centimeters per revolution (cc / rev), can be used to facilitate the transport of the fiber element forming composition 22 to the spinning die 26. The flow rate of the fiber element forming composition 22 from the pressurized tank 24 to the spinning die 26 can be controlled by adjusting the revolutions per minute (rpm) of the pump 30. Pipes 28 are used to connect the pressurized tank 24, the pump 30, and the spinning die 26 to transport the fiber element forming composition 22 from the tank 24 to the pump 30 and into the die 26 (as indicated by the arrows).

[0100] As shown in Figures 1 and 2, the spinning die 26 may include a plurality of fiber element forming holes 32, each containing a molten capillary 34 surrounded by concentric fine-tuning fluid holes 36 that allow a fluid such as air to pass through as it exits the fiber element forming hole 32, facilitating the fine-tuning of the fiber element forming composition 22 into fiber elements 10.

[0101] In one embodiment, the spinning die 26 shown in Figure 2 has two or more rows of circular extrusion nozzles (fiber element forming holes 32) spaced apart from each other at a pitch P of about 1.524 mm (about 0.060 inches). The nozzles have individual inner diameters of about 0.305 mm (about 0.012 inches) and individual outer diameters of about 0.813 mm (about 0.032 inches). Each individual nozzle contains a molten capillary 34 surrounded by an annular and flared orifice (concentric molten fluid hole 36) to supply molten air to each individual molten capillary 34. The fiber element forming composition 22 extruded through the nozzle is surrounded by a generally cylindrical stream of moist air supplied through the orifice and molten to produce fiber elements 10.

[0102] The atomized air may be provided by heating compressed air from a supply source with an electric resistance heater, for example, a heater manufactured by Chromalox, Division of Emerson Electric (Pittsburgh, Pa., USA). Under conditions in an electrically heated and thermostat-controlled delivery pipe, an appropriate amount of steam was added to saturate or nearly saturate the heated air. The condensed water was removed in an electrically heated and thermostat-controlled separator.

[0103] The initial fibrous elements are dried by a stream of dry air, which has a temperature of approximately 149°C (approximately 300°F) to approximately 315°C (approximately 600°F) due to an electric resistance heater (not shown), is supplied through a drying nozzle, and is released at an angle of approximately 90° to the overall orientation of the initial fibrous elements to be spun. The dried fibrous elements may be collected in a collection device, such as a belt or fabric, which in one embodiment can impart a pattern, e.g., a non-random repeating pattern, to the fibrous structure formed as a result of collecting the fibrous elements on the belt or fabric. A vacuum source may be added directly below the forming area to assist in the collection of fibrous elements in the collection device. The spinning and collection of the fibrous elements produces a fibrous structure containing intertwined fibrous elements, e.g., filaments.

[0104] In one embodiment, any volatile solvent, such as water, present in the fiber element forming composition 22 is removed by drying or the like during the spinning process when the fiber elements 10 are formed. In one embodiment, more than 30% by weight and / or more than 40% by weight and / or more than 50% by weight of the volatile solvent in the fiber element forming composition, such as water, is removed during the spinning process by drying the generated fiber elements 10 or the like.

[0105] Non-limiting examples of methods for preparing filament-forming compositions, particularly for the second layer. The filament-forming composition may be manufactured by any suitable process, as long as the filament-forming composition is suitable for manufacturing the articles of the present invention.

[0106] In one embodiment, one or more activators, such as cationic surfactants and hair conditioning activators such as high-melting-point fatty compounds, are added to a metal beaker (in the absence of free water) and heated to a temperature sufficient to melt the activators, for example, 80°C. The activators are melted and optionally stirred until they form a homogeneous fluid.

[0107] After melting the activator, one or more filament-forming materials, such as one or more structuring agents, are added to the homogeneous fluid of the activator. Upon addition, the other components are stirred into the homogeneous fluid of the activator until they are homogeneously dispersed throughout the entire homogeneous fluid of the activator and / or homogeneously dissolved within the homogeneous fluid of the activator. All of this is done while maintaining the homogeneous fluid of the activator at a temperature of at least the melting point of the lowest melting point activator, for example, 80°C.

[0108] This filament-forming composition may then be used to produce the fibrous elements and / or fibrous structures and / or articles of the present invention.

[0109] A non-limiting example of a method for producing fibrous elements, particularly for the second layer. The fibrous elements may be produced by any suitable process. Non-limiting examples of suitable processes for producing fibrous elements are described below.

[0110] As shown in Figures 3 and 4, the fibrous elements can be fabricated as follows. The fibrous elements can be formed by small-scale equipment, a schematic diagram of which is shown in Figures 3 and 4. A suitable filament-forming composition is filled into a pressurized tank 139 suitable for batch operation. A Zenith pump manufactured by the Zenith Pump Division of Parker Hannifin Corporation (Sanford, NC, USA) with a capacity of 5.0 cubic centimeters per revolution (cm³). 3A pump 140, such as a Zenith® PEP II with a capacity of (rpm), can be used to facilitate the transport of the filament-forming composition to the spinning die 142 via the pipe 141. The flow rate of the filament-forming composition from the pressurized tank 139 to the spinning die 142 can be controlled by adjusting the revolutions per minute (rpm) of the pump 140. The pipe 141 is used to connect the pressurized tank 139, the pump 140, and the spinning die 142.

[0111] The spinning die 142 shown in Figure 3 has several rows of circular extrusion nozzles (fiber element forming holes 44) spaced apart from each other at a pitch P of approximately 1.524 mm (approximately 0.060 inches). The nozzles have individual inner diameters of approximately 0.305 mm (approximately 0.012 inches) and individual outer diameters of approximately 0.813 mm (approximately 0.032 inches). Each individual nozzle is surrounded by an annular and flared orifice (concentric fine-shrunk fluid hole 148) to supply fine-shrunk air to each individual molten capillary 146. The filament-forming composition extruded through the nozzles is surrounded and fine-shrunk by a generally cylindrical stream of moist air supplied through the orifice.

[0112] In one embodiment, as shown in Figures 3 and 4, the method for producing the fiber element 110 is as follows: a. A step of providing a filament-forming composition comprising one or more filament-forming materials and optionally one or more activators, b. The process includes spinning a filament-forming composition into one or more fibrous elements, such as a filament 110, which comprises one or more filament-forming materials and optionally one or more activators, via a spinning die 142 or the like. The one or more activators may be released from the fibrous elements when exposed to the intended use conditions.

[0113] As shown in Figure 4, the spinning die 142 may include a plurality of fiber element forming holes 144, each containing a molten capillary 146 surrounded by concentric thinning fluid holes 148 that allow a fluid such as air to pass through as it exits the fiber element forming hole 144, facilitating the thinning of the filament forming composition into fiber elements, such as filaments 110.

[0114] The atomized air may be provided by heating compressed air from a supply source with an electric resistance heater, for example, a heater manufactured by Chromalox, Division of Emerson Electric (Pittsburgh, Pa., USA). Under conditions in an electrically heated and thermostat-controlled delivery pipe, an appropriate amount of steam is added to saturate or nearly saturate the heated air. The condensed water is removed in an electrically heated and thermostat-controlled separator.

[0115] The initial fibrous elements are rapidly cooled by a cooling airflow, which has a temperature of approximately 5°C (approximately 41°F) to approximately 40°C (approximately 104°F) and is supplied through a cooling air duct by a cooling air handler (not shown) and released at an angle of approximately 90° to the overall orientation of the extruded initial fibrous elements. The dried initial fibrous elements are collected on a collection device, for example, a movable belt with small holes or a patterned collection belt. A vacuum source may be added directly below the forming area to assist in fiber recovery.

[0116] Non-limiting examples of methods for manufacturing articles As shown in Figure 5, another embodiment of Article 220, for example, the fibrous structure of the present disclosure comprises a first fibrous structure layer 222 comprising a plurality of fibrous elements, for example, filaments 210; a second fibrous structure layer 224 comprising a plurality of fibrous elements, for example, filaments 210, for example, activator-containing filaments; and a plurality of particles 226, for example, activator-containing particles, dispersed throughout the second fibrous structure layer 224, in this case randomly, along the x, y, and z axes. Alternatively, in another embodiment, the plurality of particles 226, for example, activator-containing particles, may be dispersed within the second fibrous structure layer 224 in an irregular pattern or a non-random repeating pattern. As described above, a similar article containing a two-ply fiber structure includes a first fiber structure ply 222 containing multiple fiber elements, e.g., filaments 210; a second fiber structure ply 224 containing multiple fiber elements, e.g., filaments 210, e.g., activator-containing filaments; and multiple particles 226, e.g., activator-containing particles, dispersed throughout the second fiber structure ply 224, in this case randomly, along the x, y, and z axes. Alternatively, in another embodiment, the multiple particles 226, e.g., activator-containing particles, may be dispersed within the second fiber structure ply 224 in an irregular pattern or a non-random repeating pattern.

[0117] In one embodiment, in a multi-ply article, one or more fiber structure plies may be formed directly on and / or deposited on existing fiber structure plies to form a multi-ply fiber structure. Two or more existing fiber structure plies may be joined together with one or more other existing fiber structure plies to form the multi-ply article of the present invention, for example, by thermal bonding, bonding, embossing, perforation, rod insertion, rotary knife perforation, die punching, die punching, needle punching, knurling, pneumatic forming, hydraulic forming, laser cutting, tufting, and / or other mechanical bonding processes.

[0118] How to use The soluble solid substrates described herein may be used to clean and / or treat hair, hair follicles, skin, teeth, and oral cavity. Methods for treating these consumer substrates may include a) applying an effective amount of the structure to a hand; b) wetting the structure with water to dissolve the solid; c) applying the dissolved material to a target consumer substrate for cleaning or treating the target consumer substrate; and d) rinsing off the diluted treatment composition from the consumer substrate. These steps may be repeated as many times as necessary to achieve the desired cleaning and / or treatment effect.

[0119] A useful method for exerting effects on hair, hair follicles, skin, teeth, and / or oral cavity includes the step of applying the composition according to the first embodiment to these target consumer substrates that require adjustment.

[0120] Alternatively, a useful method for conditioning the condition of hair, hair follicles, skin, teeth, or oral cavity includes the step of applying one or more of the compositions described herein to these target consumer substrates that require conditioning.

[0121] The amount of composition to be applied, the frequency of application, and the duration of use vary considerably depending on the purpose of application, the level of the components of a given composition, and the desired level of adjustment. For example, when the composition is applied to the whole body or hair, the effective amount is generally in the range of about 0.5 grams to about 10 grams, or about 1.0 gram to about 5 grams, and / or about 1.5 grams to about 3 grams.

[0122] Product type and product Non-limiting examples of products utilizing soluble solid structures include hand cleansing substrates, teeth cleansing or treatment substrates, oral substrates, hair cleansing agents or other hair treatment substrates, body cleansing substrates, shaving preparation substrates, personal care substrates containing pharmaceuticals or other skincare active substances, moisturizing substrates, sunscreen substrates, long-lasting skin-effect substrates (e.g., vitamin-containing substrates, α-hydroxy acid-containing substrates, etc.), deodorizing substrates, and fragrance-containing substrates.

[0123] Preferably, the soluble solid structure of the present invention is a personal care product, more preferably a hair care product, even more preferably a rinse-off hair care product, and more preferably a rinse-off hair care product containing a non-sulfate surfactant.

[0124] This specification discloses products comprising one or more soluble solid structures described herein, and information that guides consumers to dissolve the structure and apply the dissolved mixture to hair, hair follicles, skin, teeth, and oral cavity in order to achieve the effects on target consumer substrates, rapidly foaming foams, rapidly rinsing foams, easily rinsing foams, and combinations thereof. Such information may be printed material directly or indirectly attached to the packaging containing the soluble solid structure or to the soluble solid structure itself. Alternatively, such information may be an electronic or broadcast message associated with the manufactured article. Alternatively, such information may describe at least one possible use, function, distinguishing feature, and / or characteristic of the manufactured article.

[0125] Test method Measurement of basis weight Generally, the basis weight of a material or article (including soluble solid structures) is determined by first cutting the sample into known areas using a die cutter or equivalent, then weighing and recording the sample using a top-loading balance with a minimum resolution of 0.01 g, and finally calculating the basis weight as follows: Basis weight (g / m 2 ) = Weight of the basis weight pad (g)

[0126]

number

[0127] The ideal pad sample size for determining basis weight is 10 cm. 2 It should be cut with a precision die cutter that is ultra-high and has the desired shape. The soluble solid structure to be measured should be 10 cm 2If it is smaller than this, the sampling area can be reduced by making appropriate changes to the calculation to determine the basis weight.

[0128] In this embodiment, 17.28 cm 2 The basis weight was calculated based on the total soluble solid structure with a known area. Therefore, the basis weight calculation is as follows:

[0129]

number

[0130] Manual dissolution test method Materials required: Tested dissolvable solid structures: 3 to 5 dissolvable solid structures (final product samples) are tested, and the average number of strokes for each individual dissolvable solid structure sample is calculated and recorded as the average manual dissolution value of the dissolvable solid structure. In this method, the entire consumer-ready-to-sell dissolvable solid structure, or consumer-use dissolvable solid structure, is tested. The entire consumer-ready-to-sell dissolvable solid structure, or consumer-use dissolvable solid structure, is tested at 50 cm². 2 If the installation area exceeds 50cm, first, 2 The soluble solid structure is cut so that it has the following footprint. Nitrile gloves 10cc syringe Plastic weighing boat (approximately 3 inches x 3 inches) 100mL glass beaker Water (Water from Cincinnati City or equivalent with the following properties: total hardness = 155 mg / L (as CaCO2), calcium content = 33.2 mg / L, magnesium content = 17.5 mg / L, phosphate ion content = 0.0462 mg / L) The water used has a hardness of 7 gpg and a temperature of 40°C ± 5°C.

[0131] protocol: 1. Add 80 mL of water to the glass beaker. Add 300-500 mL of water to the glass beaker. 2. Heat the water in the beaker until it reaches a temperature of 40°C ± 5°C. 3. Transfer 10 mL of water from the beaker to the weighing boat using a syringe. 4. Within 10 seconds of transferring the water to the weighing boat, place the soluble solid structure sample in the palm of your gloved hand (your non-dominant hand, cupped to hold the soluble solid structure sample). 5. Using your dominant hand, quickly add water from the weighing boat to the soluble solid structure sample and immediately wet it for 5-10 seconds. 6. Using your non-dominant hand (which is also wearing a glove), quickly rub it twice in a circular motion. 7. After 2 strokes, visually inspect the soluble solid structure sample in your hand. If the soluble solid structure sample is completely dissolved, record the stroke count = 2 dissolution strokes. If it is not completely dissolved, rub the remaining soluble solid structure sample with two more circular strokes (a total of 4 strokes) and observe the degree of dissolution. If the soluble solid structure sample does not contain any solid fragments after two further strokes, record the stroke count = 4 dissolution strokes. If, after a total of 4 strokes, the soluble solid structure sample still contains undissolved solid fragments, continue rubbing the remaining soluble solid structure sample with two more circular strokes until the soluble solid structure sample is completely dissolved or the total stroke count reaches 30, whichever comes first, checking whether any remaining solid fragments of the soluble solid structure sample remain after each of the two further strokes. Record the total number of strokes. Record 30 dissolution strokes even if solid fragments of the soluble solid structure sample remain after a maximum of 30 strokes. 8. Repeat this process for each of the four soluble solid structure samples. 9. Calculate the arithmetic mean of the recorded dissolution stroke values ​​for each individual soluble solid structure sample and record it as the average hand dissolution value for the soluble solid structure. The average hand dissolution value is reported in units of the nearest single dissolution stroke.

[0132] Fiber structure - Fiber diameter For fibrous structures, the diameter of soluble fibers in a web sample is determined by using a scanning electron microscope (SEM) or optical microscope and image analysis software. A magnification of 200–10,000x is chosen so that the fibers are suitably magnified for measurement. When using an SEM, the sample is sputtered with a gold or palladium compound to avoid charging and vibration of the fibers in the electron beam. A manual procedure is used to determine the fiber diameter from the image (on the monitor screen) captured by the SEM or optical microscope. Using mouse and cursor tools, the edge of a randomly selected fiber is located, and then measured in the width direction (i.e., perpendicular to the fiber direction at that point) to the other edge of the fiber. A graduated and calibrated image analysis tool provides scaling to obtain actual readings in micrometers (μm). Using an SEM or optical microscope, several fibers are randomly selected across the web sample. At least two test pieces are cut from the web (or web in the product) and tested in this manner. For statistical analysis, such measurements are performed at least 100 times in total, and all data are recorded. The recorded data is used to calculate the mean, standard deviation, and median of fiber diameters. Another useful statistic is the calculation of the amount of fiber set below a certain upper limit. To determine this statistic, the software is programmed to count how many of the fiber diameters are below the upper limit, and this count (divided by the total number of data and multiplied by 100%) is reported in percentages as percentages below the upper limit, such as percentages with a diameter of less than 1 micrometer, or percentages of sub-micrometers. The inventors have calculated the measured diameter (in micrometers) of individual circular fibers. i This is how it is expressed.

[0133] When the fiber has a non-circular cross-section, the measured fiber diameter is determined as and equal to the hydraulic diameter, which is obtained by multiplying the cross-sectional area of ​​the fiber by four and dividing by the length of the perimeter of the fiber's cross-section (outer circumference in the case of hollow fibers). The number mean diameter, or average diameter, is d num It is calculated as follows.

[0134]

number

[0135] combination 1. A soluble solid structure, a. A first layer comprising a first water-soluble polymer in an amount of about 20% to about 100% by weight of the first layer, preferably about 50% to about 100% by weight, more preferably about 90% to about 100% by weight, more preferably about 95% to about 100% by weight, and even more preferably about 99% to about 100% by weight of the first layer, b. A soluble solid structure comprising a second layer comprising a second water-soluble polymer in an amount of about 1% to about 50% by weight, preferably about 1% to about 20% by weight, more preferably about 1% to about 10% by weight, more preferably about 2% to about 6% by weight, and even more preferably about 3% to about 5% by weight of the second layer, a high-melting-point fatty substance having a carbon chain length of C12 to C22 or a mixture thereof, having a melting point above 25°C, and a cationic surfactant. 2. The soluble solid structure according to Feature 1, wherein the first layer has a scaling fracture tensile energy absorption (scaling fracture TEA) of about 10 (g / cm) to about 185 (g / cm), preferably about 20 (g / cm) to about 180 (g / cm), and more preferably about 25 (g / cm) to about 175 (g / cm). 3. The first water-soluble polymer is (i) Polyvinyl alcohol having a molecular weight of approximately 23,000 g / mol to approximately 45,000 g / mol, preferably approximately 25,000 g / mol to approximately 40,000 g / mol, more preferably approximately 26,000 g / mol to approximately 35,000 g / mol. (ii) A mixture of polyvinyl alcohols having an average molecular weight as a mixture of about 23,000 g / mol to about 45,000 g / mol, preferably about 25,000 g / mol to about 40,000 g / mol, and more preferably about 26,000 g / mol to about 35,000 g / mol. (iii) A heat-bound starch containing or not containing a plasticizer, wherein the molecular weight is about 1,000,000 g / mol to about 50,000,000 g / mol, preferably about 2,000,000 g / mol to about 40,000,000 g / mol, (iv) Polyvinylpyrrolidone, its copolymers, or mixtures thereof (v) Polyvinyl oxazoline, its copolymers, or mixtures thereof (vi) Poly2-ethyl-2-oxazoline, its copolymers, or mixtures thereof, and (vii) A soluble solid structure according to feature 1 or 2, selected from the group consisting of polyvinyl caprolactam, its copolymer, or mixtures thereof. 4. The first water-soluble polymer is selected from (ii) a mixture of polyvinyl alcohols, to form a soluble solid structure according to any one of features 1 to 3. 5. The second water-soluble polymer is selected from the group consisting of polyvinylpyrrolidone, preferably polyvinylpyrrolidone copolymer, polydimethylacrylamide, preferably polydimethylacrylamide copolymer, polyvinyl oxazoline, preferably poly2-ethyl-2-oxazoline, polyvinylcaprolactam copolymer, preferably polyvinylcaprolactam, and combinations thereof, and is a soluble solid structure according to any one of features 1 to 4. 6. The first layer comprises a first water-soluble polymer and a component that is incompatible with at least one of the above components in the second layer. The second layer comprises a second water-soluble polymer, a high-melting-point fatty substance having a carbon chain length of C12-C22 or a mixture thereof, the high-melting-point fatty substance having a melting point greater than 25°C, and a cationic surfactant, wherein the soluble solid structure is according to any one of features 1 to 5. 7. A soluble solid structure according to any of features 1 to 6, wherein the first layer has an aesthetic feature selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof. 8. The first layer is a soluble solid structure according to any of features 1 to 7, substantially free of surfactants. 9. A soluble solid structure according to any one of features 1 to 8, wherein at least one of the first layer and the second layer has particles, preferably the second layer has particles. 10. A soluble solid structure according to any one of features 1 to 9, wherein the soluble solid structure is dissolved by a manual dissolution method of less than 30 strokes, preferably by a manual dissolution method of less than 20 strokes, and more preferably by a manual dissolution method of less than 15 strokes. 11. The soluble solid structure according to any one of features 1 to 10, wherein the soluble solid structure is a personal care product, preferably a hair care product, more preferably a rinse-off hair care product, and more preferably a rinse-off hair care product containing a non-sulfate surfactant.

[0136] Non-restrictive examples The compositions shown in the following examples illustrate specific embodiments of the compositions, but are not intended to limit the invention to them. Those skilled in the art can make other modifications without departing from the spirit and scope of the invention. These exemplary embodiments of the compositions described herein provide enhanced conditioning effects on hair.

[0137] Unless otherwise stated, all quantities listed are in weight percentages, excluding trace substances such as diluents, preservatives, colorant solutions, image components, and plant matter. Unless otherwise specified, all percentages are based on weight.

[0138] [Table 1] 1. Selvol403 by Kurraray 2. Selvol420h by Kurraray 3. Selvol505 by Kurraray 4. Selvol205 by Kurraray

[0139] [Table 2]

[0140] [Table 3]

[0141] [Table 4]

[0142] [Table 5]

[0143] The soluble solid structures of Examples D-1 to D-6 are embodiments of the present invention that use Examples F-1 to F-5 for the first layer and some of the second layer examples such as S-1. These embodiments of the present invention provide improved flexibility in the composition and, in particular, allow for a reduction in the polymer content in at least one of the layers while maintaining certain structural strength during manufacturing and ease of cutting during and after manufacturing.

[0144] When Comparative Example 1 of the first layer was used, the soluble solid structure could not maintain the desired sheet shape during manufacturing. When Comparative Example 2 of the first layer was used, the soluble solid structure was difficult to cut during and after manufacturing.

[0145] The dimensions and values ​​disclosed herein are not to be understood as strictly limited to the exact numerical values ​​listed. Instead, unless otherwise stated, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm."

[0146] All documents cited herein, including cross-referenced documents or related patents or applications, are incorporated herein in their entirety by reference unless expressly excluded or otherwise limited. No citation of any document shall be deemed prior art to any invention disclosed or claimed herein, nor shall it be deemed to teach, suggest or disclose any such invention, either alone or in combination with any other reference. Furthermore, if any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition given to that term in this document shall apply.

[0147] While specific embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such changes and modifications within the scope of the invention be covered by the appended claims.

Claims

1. A soluble solid structure, a. A first layer comprising a first water-soluble polymer in an amount of 20% to 100% by weight of the first layer, b. A second layer comprising 1% to 50% by weight of a second water-soluble polymer in the second layer, a high-melting-point fatty substance having a carbon chain length of C12 to C22 or a mixture thereof, wherein the melting point is greater than 25°C, and a cationic surfactant. A soluble solid structure comprising [a certain characteristic].

2. The soluble solid structure according to claim 1, wherein the first layer has a scaling fracture tensile energy absorption (scaling fracture TEA) of 10 (g / cm) to 185 (g / cm).

3. The first water-soluble polymer is (i) Polyvinyl alcohol having a molecular weight of 23,000 g / mol to 45,000 g / mol, (ii) A mixture of polyvinyl alcohols, wherein the mixture has an average molecular weight of 23,000 g / mol to 45,000 g / mol as a mixture. (iii) A heat-bound starch containing or not containing a plasticizer, with a molecular weight of 1,000,000 g / mol to 50,000,000 g / mol, (iv) Polyvinylpyrrolidone, its copolymers, or mixtures thereof (v) Polyvinyl oxazolines, their copolymers, or mixtures thereof (vi) Poly-2-ethyl-2-oxazoline, its copolymer, or mixtures thereof, and (vii) Polyvinyl caprolactam, its copolymer, or mixture thereof A soluble solid structure according to claim 1, selected from the group consisting of the following.

4. The soluble solid structure according to claim 1, wherein the first water-soluble polymer is selected from the mixture of polyvinyl alcohols (ii).

5. The soluble solid structure according to claim 1, wherein the second water-soluble polymer is selected from the group consisting of polyvinylpyrrolidone, polydimethylacrylamide, polyvinyl oxazoline, polyvinylcaprolactam copolymer, and combinations thereof.

6. The soluble solid structure according to claim 5, wherein the polyvinylpyrrolidone is a polyvinylpyrrolidone copolymer, the polydimethylacrylamide is a polydimethylacrylamide copolymer, the polyvinyl oxazoline is poly-2-ethyl-2-oxazoline, and the polyvinyl caprolactam copolymer is polyvinyl caprolactam.

7. The first layer comprises the first water-soluble polymer and a component that is incompatible with at least one of the components in the second layer. The second layer comprises the second water-soluble polymer, a high-melting-point fatty substance having a carbon chain length of C12 to C22 or a mixture thereof, wherein the melting point is greater than 25°C, and a cationic surfactant. The soluble solid structure according to claim 1.

8. The soluble solid structure according to claim 1, wherein the first layer has an aesthetic feature selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof.

9. The soluble solid structure according to claim 1, wherein the first layer substantially does not contain a surfactant.

10. The soluble solid structure according to claim 1, wherein at least one of the first layer and the second layer has particles.

11. The soluble solid structure according to claim 10, wherein the second layer has the particles.

12. The soluble solid structure according to claim 1, wherein the soluble solid structure is dissolved by a manual dissolution method of less than 30 strokes.

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