Dissolvable solid fibrous shampoo article containing salt

Abstract

The present invention relates to a dissolvable solid fibrous shampoo article comprising a plurality of fibrous elements, the plurality of fibrous elements being intertwined or otherwise bonded together to form the fibrous article, the plurality of fibrous elements comprising: a) about 1% to about 50% by weight of a polymeric structurant, b) about 0.1% to about 5% by weight of a cationic polymer, c) about 20% to about 70% by weight of a surfactant, and d) about 5.5% to about 20% by weight of a salt, the salt including an inorganic salt and an organic salt, the inorganic salt being present at a concentration of about 0% to less than 5% (excluding 5%) by weight of the dry article, and the organic salt being present at a concentration of about 1% to about 18% by weight of the dry article. The present invention provides a dissolvable solid fibrous shampoo article that has adequate strength during manufacture but does not slow down the dissolution of the structure during use.

Description

[Technical Field]

[0001] The present invention relates to a dissolvable solid fibrous shampoo article comprising a plurality of fibrous elements, the fibrous elements being entangled or otherwise bonded to one another to form the fibrous article. The present invention provides a dissolvable solid fibrous shampoo article that has adequate strength during manufacturing but does not slow down the dissolution of the structure during use. [Background technology]

[0002] Many personal care products and other consumer products available on the market today are sold in liquid form. While liquid products are widely used, they often have trade-offs in terms of packaging, storage, transportation, and convenience of use. Liquid consumer products are typically sold in bottles, which increase costs and result in packaging waste, much of which ends up in landfills.

[0003] Hair care products in the form of dissolvable solid structures offer an attractive format for consumers. Executions of dissolvable solid structures can include dissolvable films, compressed powders in solids, fibrous structures, porous foams, dissolvable deformable solids, powders, and the like.

[0004] For example, WO 2020264574(A1) discloses a dissolvable solid fibrous shampoo article comprising fibrous elements, the dissolvable solid fibrous shampoo article comprising: (a) from about 1% to about 50% by weight, based on the dry article, of a polymeric structuring agent; (b) from about 10% to about 90% by weight, based on the dry article, of a surfactant system, the surfactant system being substantially free of sulfate-based surfactants; and (c) optionally a cationic polymer having a weight average molecular weight of from about 100,000 g / mol to about 2,500,000 g / mol as measured by gel permeation chromatography and a charge density of greater than 0.5 meg / g as measured according to the Charge Density Test Method, wherein the fibrous article is substantially free of lamellar structure as determined by the Lamellar Structure Test Method, and the fibrous article comprises hand dissolution of less than 15 strokes according to the Hand Dissolution Test Method. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2020264574(A1) Summary of the Invention [Problem to be solved by the invention]

[0006] However, a need remains for such dissolvable solid structures, especially those containing cationic polymers, that have adequate strength during manufacture but do not slow down the dissolution of the structure during use. [Means for solving the problem]

[0007] The present invention relates to a dissolvable solid fibrous shampoo article comprising a plurality of fibrous elements, the fibrous elements being entangled or otherwise bonded to one another to form the fibrous article. The present invention provides a dissolvable solid fibrous shampoo article that has adequate strength during manufacturing but does not slow down the dissolution of the structure during use. [Brief explanation of the drawings]

[0008] While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter of the invention, it is believed the present invention may be more readily understood from the following description taken in conjunction with the accompanying drawings. [Figure 1] 1 is a schematic diagram of an example of a process for making a fiber element of the present invention. [Figure 2] FIG. 3 is a schematic diagram showing an enlarged view of an example die used in the process of FIG. 2. [Figure 3] An example of a fibrous article containing filaments. DETAILED DESCRIPTION OF THE INVENTION

[0009] definition As used herein, "soluble" means that the dissolvable solid structure dissolves completely in water or provides a uniform dispersion when mixed in water according to a hand dissolution test. The dissolvable solid structure has a hand dissolution value of about 1 to about 20 strokes, or about 4 to about 15 strokes, as measured by the hand dissolution method.

[0010] As used herein, "flexible" means that the dissolvable solid structure meets the distances up to the maximum force values ​​discussed herein.

[0011] "Fibrous article," also interchangeably referred to as "fibrous structure," as used herein, refers to a structure comprising one or more fibrous elements and, optionally, one or more particles and / or coatings. In one example, a fibrous article according to the present invention refers to a combination of fibrous elements and, optionally, particles and / or coatings that together form a structure, such as a unitary structure, capable of performing a function.

[0012] FIG. 3 is an example of a fibrous article containing filaments.

[0013] The fibrous articles of the present invention may be homogeneous or layered. If layered, the fibrous article may include at least two, and / or at least three, and / or at least four, and / or at least five layers, such as one or more fiber element layers, one or more particle layers, and / or one or more mixed fiber element / particle layers. A layer may include a particle layer within the fibrous article or between fiber element layers within the fibrous article. A layer including fiber elements may be referred to as a ply. A ply may be a fibrous article, which may be homogeneous or layered as described herein.

[0014] The fibrous structures of the present invention may have multi-ply fibrous structures that include two or more different fibrous structure plies, each of which may be the same or different from the other plies.

[0015] A layer containing fibrous elements may be referred to as a ply. A ply may be a fibrous structure that may be homogeneous or layered, as described herein.

[0016] A single-ply fibrous structure, or a multi-ply fibrous structure comprising one or more fibrous structure plies as described herein, may have a basis weight of 5000 g / m2 or more, as measured in accordance with the basis weight test method described herein. 2For example, a single-ply or multi-ply fibrous structure according to the present disclosure may exhibit a basis weight of less than 10 g / m when measured in accordance with the Basis Weight Test Method. 2 Super~approx. 5000g / m 2 , and / or 10 g / m 2 Super ~ about 3000g / m 2 , and / or 10 g / m 2 Super ~ about 2000g / m 2 , and / or 10 g / m 2 Super ~ about 1000g / m 2 and / or 20 g / m 2 Super ~ about 800g / m 2 , and / or 30 g / m 2 Super ~ about 600g / m 2 , and / or 50g / m 2 Super~approx. 500g / m 2 and / or 300 g / m 2 Super ~ about 3000g / m 2 , and / or 500g / m 2 Super ~ about 2000g / m 2 It can exhibit a basis weight of more than

[0017] In one embodiment, the fibrous structure of the present invention is a "monolithic fibrous structure."

[0018] As used herein, a "monolithic fibrous structure" is an arrangement comprising two or more and / or three or more multiple fibrous elements that are intertwined or otherwise bonded to one another to form a fibrous structure and / or fibrous structure ply. The monolithic fibrous structure of the present invention may be one or more plies within a multi-ply fibrous structure. In one embodiment, the monolithic fibrous structure of the present invention may comprise three or more different fibrous elements. In another embodiment, the monolithic fibrous structure of the present invention may comprise two or more different fibrous elements.

[0019] "Fiber element," as used herein, means an elongated, particulate particle having a length that is significantly greater than its average diameter, i.e., a length to average diameter ratio of at least about 10. A fiber element can 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.

[0020] The fiber elements of the present invention may be spun from a filament-forming composition, also referred to as a fiber element-forming composition, via a suitable spinning process operation such as meltblowing, spunbonding, electrospinning, and / or rotary spinning.

[0021] The fiber elements of the present invention can be monocomponent (a single, integral, solid piece rather than two distinct parts such as core / sheath bicomponent) and / or multicomponent. For example, the fiber elements may comprise bicomponent fibers and / or filaments. The bicomponent fibers and / or filaments can be in any configuration, such as side-by-side, sheath-core, islands-in-the-sea, etc.

[0022] As used herein, "filament" refers to an elongated particulate as described above having a length of 2 inches or more, and / or 3 inches or more, and / or 4 inches or more, and / or 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.

[0023] "Fiber," as used herein, means an elongated, particulate particle as described above exhibiting a length of less than 2 inches, and / or less than 1.5 inches, and / or less than 1 inch. Typically, fibers are considered to be essentially discontinuous. Non-limiting examples of fibers include fibers made by spinning filaments or filament tows and then cutting the filaments or filament tows into pieces less than 2 inches to produce fibers. Thus, references herein to filaments also include fibers made from such filaments, unless otherwise specified. Fibers are typically considered to be essentially discontinuous, as opposed to filaments, which are considered to be essentially continuous.

[0024] As used herein, "filament-forming composition" and / or "fibrous element-forming composition" refer to a composition suitable for producing fibrous elements of the present invention, such as by meltblowing and / or spunbonding. The filament-forming composition includes one or more filament-forming materials that exhibit properties that make the material suitable for spinning into fibrous elements. In one example, the filament-forming material includes a polymer. In addition to the one or more filament-forming materials, the filament-forming composition may include one or more additives, such as one or more active agents. Furthermore, the filament-forming composition may include one or more polar solvents (such as water) in which one or more, e.g., all, of the filament-forming materials and / or one or more, e.g., all, of the active agents are dissolved and / or dispersed prior to spinning the fibrous elements (such as filaments derived from the filament-forming composition).

[0025] As used herein, "porous" means that the dissolvable solid structure has spaces, voids, or gaps (commonly referred to herein as "pores") caused by a microscopic, complex, three-dimensional organization that provide channels, pathways, or passageways through which liquids can flow.

[0026] As used herein, "porosity" and "percent porosity" are used interchangeably and each refer to a measure of the void volume of a dissolvable solid structure; Calculated as [1-([basis weight of dissolvable solid structure] / [thickness of dissolvable solid structure x density of dry material of mass])] x 100%; The units are adjusted so that they are rounded down and multiplied by 100% to provide the percent porosity.

[0027] The dissolvable solid structure may be referred to herein as a "dissolvable solid structure" or a "dissolvable structure."

[0028] "Weight on a dry fibrous element basis" and / or "weight on a dry fibrous article basis" refer to the weight of the fibrous element, particle, and / or fibrous article, respectively, measured immediately after the fibrous element, particle, and / or fibrous article has been conditioned for two hours in a room conditioned to a temperature of 22°C ± 2°C and a relative humidity of 42% ± 4%, respectively. In one embodiment, weight on a dry fibrous element basis and / or weight on a dry fibrous article means that the fibrous element, particle, and / or fibrous article contains less than 20% by weight, and / or less than 15% by weight, and / or less than 10% by weight, and / or less than 7% by weight, and / or less than 5% by weight, and / or less than 3% by weight, and / or up to 0% by weight and / or more than 0% by weight of water, e.g., free water, based on the dry weight of the fibrous element, particle, and / or fibrous article, when measured according to the Moisture Content Test Method described herein.

[0029] The terms "molecular weight" or "molecular weight" refer to weight average molecular weight, unless otherwise specified. Molecular weight is measured using gel permeation chromatography (GPC), an industry standard method.

[0030] As used herein, articles such as "a" and "an," when used in a claim, are understood to mean one or more of what is claimed or described.

[0031] As used herein, the terms "include," "includes," and "including" are meant to be open-ended.

[0032] To determine the values ​​of each of the parameters of Applicants' invention, including those discussed in the Dissolvable Structures - Physical Properties section below, the methods disclosed in the Test Methods section of this application should be used.

[0033] All percentages and ratios are calculated by weight unless otherwise specified. All percentages and ratios are calculated based on the total composition unless otherwise specified.

[0034] It should be understood that every maximum numerical limitation given throughout this specification includes every lower numerical limitation, as if such lower numerical limitations were expressly written herein. Every minimum numerical limit given throughout this specification includes every higher numerical limitation, as if such higher numerical limitations were expressly written herein. Every numerical range given throughout this specification will include every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.

[0035] Unless otherwise specified, all ingredient or composition concentrations refer to the active concentration of that ingredient or composition and are exclusive of impurities, e.g., residual solvents or by-products, that may be present in commercial sources.

[0036] Dissolvable solid fibrous articles (dissolvable solid fibrous structures) The dissolvable solid fibrous shampoo article of the present invention comprises a plurality of fibrous elements that are entangled or otherwise associated with one another to form a fibrous article. Examples of fibrous elements can be found in U.S. Patent Application No. 16 / 431,115, which is incorporated by reference.

[0037] The article also includes a polymeric structurant, a cationic polymer, a surfactant, and salts, including inorganic and organic salts. These components are described in detail below. Preferably, the fibrous elements are formed from a homogeneous mixture including the polymeric structurant, the cationic polymer, the surfactant, and salts, including inorganic and organic salts. Alternatively, the salts may be incorporated into the article outside the fibrous elements by adding them as particles after the fibrous elements are formed.

[0038] The dissolvable solid structure may contain particulates. The dissolvable solid structure may have an aesthetic feature selected from the group consisting of printing, embossing, texture, coloring, and combinations thereof.

[0039] salt The article comprises from about 5.5% to about 20%, preferably from about 7% to about 18%, more preferably from about 8% to about 16%, by weight of salts, including inorganic and organic salts, based on the dry article.

[0040] organic salts The organic salt is contained at a concentration of about 1% to about 18% by weight, preferably about 2% to about 16% by weight, more preferably about 3% to about 14% by weight, and more preferably about 5.2% to about 14% by weight, based on the dry matter.

[0041] The organic salt is preferably a salt of an organic acid having an average molecular weight (in acid form) of about 80 to about 400 daltons, preferably about 80 to about 200 daltons, more preferably about 90 to about 150 daltons. Examples of such organic salts include salts of lactic acid such as sodium lactate and potassium lactate; sodium or potassium salts of citric acid, oxalic acid, malonic acid, tartronic acid, fumaric acid, maleic acid, malic acid, and tartaric acid; and combinations thereof. Salts of lactic acid such as sodium lactate and potassium lactate are preferred.

[0042] inorganic salts The inorganic salt is contained at a concentration of about 0% to less than 5% by weight (excluding 5% by weight) on a dry matter basis, preferably about 1.2% to about 4.9% by weight, and more preferably about 1.5% to about 4.8% by weight.

[0043] Polymer structurants The melt composition and / or dissolvable fibrous article and / or fibrous element may contain from about 1% to 90% by weight, alternatively from 10% to about 80% by weight, alternatively from about 20% to about 70% by weight, alternatively from about 30% to about 65% by weight, alternatively from about 35% to about 60% by weight, alternatively from about 20% to about 40% by weight of polymeric structurant, based on the dry fibrous element and / or dry dissolvable fibrous article.

[0044] Non-limiting examples of fiber element-forming polymeric structurant materials include water-soluble polymers. The water-soluble polymers may be synthetic or naturally derived and may be chemically and / or physically modified. The polar solvent-soluble polymers may exhibit a weight average molecular weight of about 10,000 g / mol to about 40,000,000 g / mol, preferably about 20,000 g / mol to about 30,000,000 g / mol, more preferably about 35,000 g / mol to about 20,000,000 g / mol, even more preferably about 40,000 g / mol to about 5,000,000 g / mol, and most preferably about 40,000 g / mol to about 500,000 g / mol.

[0045] The one or more fiber element-forming polymeric structuring agents include one or more polyvinyl alcohols, which may exhibit a weight average molecular weight of from about 10,000 g / mol to about 40,000,000 g / mol, alternatively from about 20,000 g / mol to about 30,000,000 g / mol, alternatively from about 35,000 g / mol to about 20,000,000 g / mol, alternatively from about 40,000 g / mol to about 5,000,000 g / mol, or alternatively from about 40,000 g / mol to about 500,000 g / mol.

[0046] The one or more fiber element-forming polymeric structurant materials may comprise two or more polyvinyl alcohols, where one of the two or more polyvinyl alcohols may exhibit a weight average molecular weight of from about 10,000 g / mol to about 100,000 g / mol, alternatively from about 20,000 g / mol to about 50,000 g / mol, alternatively from about 25,000 g / mol to about 45,000 g / mol, and another of the two or more polyvinyl alcohols may exhibit a weight average molecular weight of from about 105,000 g / mol to about 40,000,000 g / mol, preferably from about 110,000 g / mol to about 20,000,000 g / mol, more preferably from about 120,000 g / mol to about 500,000 g / mol.

[0047] Non-limiting examples of fiber element-forming polymeric structurants include water-soluble hydroxyl polymers, water-soluble thermoplastic polymers, water-soluble biodegradable polymers, water-soluble non-biodegradable polymers, and mixtures thereof.

[0048] The one or more fiber element forming polymeric structurant materials may further comprise starch. Preferably, the one or more fiber element forming polymeric structurant materials may comprise one or more of polyvinyl alcohol and starch.

[0049] The one or more fiber element forming materials may further comprise carboxymethyl cellulose.The one or more fiber element forming polymeric structurant materials may comprise one or more of polyvinyl alcohol and carboxymethyl cellulose.

[0050] surfactants The melt composition and / or dissolvable fibrous article and / or fibrous element may contain from about 10% to about 90% by weight, alternatively from about 20% to about 80% by weight, alternatively from about 30% to about 75% by weight, alternatively from about 40% to about 70% by weight, alternatively from about 45% to about 65% by weight of the surfactant system, based on the dry fibrous element and / or dry dissolvable fibrous article.

[0051] Suitable anionic surfactants may include alkyl and alkyl ether sulfates.Other suitable anionic surfactants are the water-soluble salts of organic sulfuric acid reaction products.Still other suitable anionic surfactants are the reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide.Other similar anionic surfactants are described in U.S. Patent Nos. 2,486,921, 2,486,922 and 2,396,278, which are incorporated herein by reference in their entirety.

[0052] Exemplary anionic surfactants include ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, sodium lauryl monoglyceride sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium lauryl sulfate, potassium laureth sulfate, sodium lauryl sarcosinate, sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate, triethanolamine lauryl sulfate, triethanolamine lauryl sulfate, monoethanolamine cocoyl sulfate, monoethanolamine lauryl sulfate, sodium tridecylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium cocoyl isethionate, and combinations thereof.In one embodiment, the anionic surfactant is sodium lauryl sulfate or sodium laureth sulfate.

[0053] In one embodiment, the anionic surfactant has the formula CH3-(CH2) z -CH(R 1 )-CH2-O-(CH2CH(R 2 )O) yat least one branched sulfate having the formula —SO3M, where z is from about 3 to about 14, and R 1 represents H or a hydrocarbon radical containing 1 to 4 carbon atoms, and R 2 is H or CH3, and R 1 and R 2 are not both H, y is 0 to about 7, the average value of y is about 1 if y is not 0, and M is a monovalent or divalent positively charged cation. Examples of monovalent positively charged cations include ammonium, sodium, potassium, and triethanolamine cations, and examples of divalent positively charged cations include magnesium. With respect to the branched sulfates described above, "average value" means that the composition may contain molecules with y values ​​other than 1, but the average value of y for all molecules in the composition is about 1.

[0054] In some examples, the surfactant system may be substantially free or free of sulfate-based surfactants, including alkyl sulfate and alkyl ether sulfate type surfactants. Alternatively, the dissolvable fibrous article may be prepared using a surfactant system comprising: 10 ~C 18 It does not include any alkyl sulfates, including alkyl sulfates, or any alkyl ether sulfates, including alkyl glyceryl ether sulfates.

[0055] In some embodiments, the dissolvable fibrous article has the formula: RO(CH2CH2O) n SO3M wherein R is an alkyl or alkenyl having 8 to 18 carbons, alternatively 12 to 18 carbons, n has an average value of at least 0.5, alternatively 2 to 3, and M is a solubilizing cation such as sodium, potassium, ammonium, or substituted ammonium.

[0056] In some examples, the dissolvable fibrous article may be free of any ammonium lauryl ether sulfate and sodium lauryl ether sulfate.

[0057] If the dissolvable fibrous article does contain alkyl sulfate type and / or alkyl ether sulfate type surfactants, the content of such weight ratios of alkyl sulfate type or alkyl ether sulfate type surfactants is a total of 0.6 or less, alternatively a total of 0.2 or less, alternatively 0.

[0058] The product may also be substantially free or free of alkyl sulfate and alkyl ether sulfate type surfactants, as discussed above.

[0059] The one or more active agents include one or more surfactants, the one or more surfactants having the general formula (I):

[0060] [ka] wherein R1 can be a saturated or unsaturated, straight or branched alkyl or alkenyl chain having from 5 to 20 carbon atoms, alternatively from 7 to 17 carbon atoms, alternatively from 9 to 13 carbon atoms, and M can be H, ammonium, triethanolammonium (TEA), sodium, or potassium, and mixtures thereof.

[0061] As noted above, the dissolvable fibrous article may be substantially free or free of alkyl sulfate and alkyl ether sulfate type surfactants.

[0062] The surfactant system can comprise an anionic primary surfactant, and the article can contain from about 5% to about 70%, alternatively from about 10% to about 65%, alternatively from about 15% to about 55%, alternatively from about 20% to about 50% by weight of the primary surfactant, based on the dry fibrous element and / or the dry dissolvable fibrous article.

[0063] The surfactant system can include an anionic primary surfactant, and the article can include from about 35% to about 100%, alternatively from about 40% to about 90%, alternatively from about 45% to about 85%, alternatively from about 50% to about 80%, alternatively from about 60% to about 75% primary surfactant by weight of the surfactant system, based on the dry fibrous element and / or the dry dissolvable fibrous article.

[0064] The primary anionic surfactant may comprise at least one glutamate surfactant. Non-limiting examples of glutamate surfactants include sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, sodium lauroyl glutamate, disodium lauroyl glutamate, potassium lauroyl glutamate, dipotassium lauroyl glutamate, sodium capryloyl glutamate, disodium capryloyl glutamate, potassium capryloyl glutamate, dipotassium capryloyl glutamate, sodium undecylenoyl glutamate, disodium undecylenoyl glutamate, potassium undecylenoyl glutamate, dipotassium undecylenoyl glutamate, disodium hydrogenated tallow oil glutamate, stearyl alcohol ... Mention may be made of sodium aroyl glutamate, disodium stearoyl glutamate, potassium stearoyl glutamate, dipotassium stearoyl glutamate, sodium myristoyl glutamate, disodium myristoyl glutamate, potassium myristoyl glutamate, dipotassium myristoyl glutamate, cocoyl / hydrogenated tallow oil sodium glutamate, cocoyl / palmoyl / sunfloweroyl sodium glutamate, hydrogenated tallow oil sodium glutamate, sodium olivoyl glutamate, disodium olivoyl glutamate, sodium palmoyl glutamate, disodium palmoyl glutamate, TEA-cocoyl glutamate, hydrogenated TEA-tallow oil glutamate, TEA-lauroyl glutamate, and mixtures thereof.

[0065] The at least one glutamate surfactant may be selected from the group consisting of sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, sodium lauroyl glutamate, disodium lauroyl glutamate, potassium lauroyl glutamate, dipotassium lauroyl glutamate, sodium capryloyl glutamate, disodium capryloyl glutamate, potassium capryloyl glutamate, dipotassium capryloyl glutamate, sodium stearoyl glutamate, disodium stearoyl glutamate, potassium stearoyl glutamate, dipotassium stearoyl glutamate, sodium myristoyl glutamate, disodium myristoyl glutamate, potassium myristoyl glutamate, dipotassium myristoyl glutamate, TEA-cocoyl glutamate, and mixtures thereof.

[0066] In some examples, the at least one glutamate surfactant may be selected from the group consisting of sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, TEA-cocoyl glutamate, and mixtures thereof.

[0067] The total concentration of the at least one glutamate surfactant may be from about 8% to about 100% by weight of the article, alternatively from about 8% to about 85%, alternatively from about 12% to about 70%, alternatively from about 17% to about 55%, and alternatively from about 20% to about 45% by weight. The glutamate concentration may be by weight based on the dry fibrous element and / or based on the dry dissolvable fibrous article.

[0068] The total concentration of the at least one glutamate surfactant can be from about 40% to about 100% by weight of the surfactant system, alternatively from about 40% to about 85% by weight, alternatively from about 45% to about 80% by weight, alternatively from about 50% to about 75% by weight, based on the dry fibrous element and / or dry dissolvable fibrous article.

[0069] The primary anionic surfactant may comprise at least one glutamate surfactant. Non-limiting examples of alaninate surfactants include sodium cocoyl alanine, potassium cocoyl alanine, ammonium cocoyl alanine, sodium lauroyl alanine, potassium lauroyl alanine, sodium capryloyl alanine, potassium capryloyl alanine, sodium undecylenoyl alanine, potassium undecylenoyl alanine, sodium stearoyl alanine, potassium stearoyl alanine, sodium myristoyl alanine, potassium myristoyl alanine, sodium cocoyl / hydrogenated tallow oil alanine, sodium cocoyl / palmoyl / sunflower oil alanine, sodium hydrogenated tallow oil alanine, sodium olivoyl alanine, sodium palmoyl alanine, TEA cocoyl alanine, TEA tallow oil alanine, TEA lauroyl glutamate, and mixtures thereof.

[0070] In some examples, the at least one alaninate surfactant may be selected from the group consisting of sodium cocoyl alanine, potassium cocoyl alanine, ammonium cocoyl alanine, TEA cocoyl alanine, and mixtures thereof.

[0071] The one or more surfactants of the one or more active agents may also include a co-surfactant, by weight of the composition, which may be selected from the group consisting of additional anionic surfactants, nonionic surfactants, amphoteric surfactants, zwitterionic surfactants, and mixtures thereof.

[0072] The article can optionally contain a co-surfactant, the total concentration of which can be from about 0.5% to about 50% by weight of the article, based on the dry fibrous element and / or the dry dissolvable fibrous article, alternatively from about 2% to about 30% by weight, alternatively from about 5% to about 25% by weight, alternatively from about 7% to about 20% by weight.

[0073] The total concentration of co-surfactant can be from about 10% to about 65% by weight, alternatively from about 15% to about 55% by weight, alternatively from about 23% to about 50% by weight of the surfactant system, based on the dry fibrous element and / or dry dissolvable fibrous article.

[0074] The additional anionic surfactant may be selected from the group consisting of isethionate surfactants, sarcosinate surfactants, glycinate surfactants, sulfosuccinate surfactants, sulfonate surfactants, sulfoacetate surfactants, glucose carboxylate surfactants, alkyl ether carboxylate surfactants, taurate surfactants, and mixtures thereof. Each of the anionic surfactants listed above is described in more detail below.

[0075] The one or more surfactants of the one or more active agents may be of the general formula (II):

[0076] [ka] wherein R1 can be a saturated or unsaturated, straight or branched alkyl or alkenyl chain having from 6 to 30 carbon atoms, alternatively from 8 to 22 carbon atoms, alternatively from 9 to 18 carbon atoms; R2 and R3 are each independently H or (C1-C4) alkyl, alternatively the (C1-C4) alkyl can be methyl; and M + may be an alkali metal, alternatively lithium, sodium, potassium, or M + may be an alkaline earth metal, alternatively magnesium, or M + may also include at least one isethionate surfactant according to the formula:

[0077] The isethionate surfactant may be selected from the group consisting of sodium lauroyl isethionate, sodium lauroyl methyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium stearoyl isethionate, sodium stearoyl methyl isethionate, sodium myristoyl isethionate, sodium myristoyl methyl isethionate, sodium palmitoyl isethionate, sodium palmitoyl methyl isethionate, sodium cocoyl isethionate, sodium cocoyl methyl isethionate, a blend of stearic acid and sodium cocoyl isethionate, ammonium cocoyl isethionate, ammonium cocoyl methyl isethionate, and mixtures thereof.

[0078] The isethionate surfactant may be selected from the group consisting of sodium lauroyl isethionate, sodium lauroyl methyl isethionate, sodium oleoyl isethionate, sodium stearoyl isethionate, sodium myristoyl isethionate, sodium palmitoyl isethionate, sodium cocoyl isethionate, ammonium cocoyl isethionate, and mixtures thereof.

[0079] The isethionate surfactant may be selected from the group consisting of sodium lauroyl isethionate, sodium lauroyl methyl isethionate, sodium stearoyl isethionate, sodium myristoyl isethionate, sodium cocoyl isethionate, ammonium cocoyl isethionate, and mixtures thereof.

[0080] The isethionate surfactant may be selected from the group consisting of sodium lauroyl isethionate, sodium cocoyl isethionate, ammonium cocoyl isethionate, and mixtures thereof.

[0081] Corresponding commercial products are available, for example, from the company Innospec under the trade name "Iselux®" and from Clariant or Uniquema under the trade names "Hostapon®" or "Arlatone®". Examples of other commercially available fatty acyl isethionates that may be used are the Hostapon® surfactants from Clariant, such as Hostapon® SCI-85C, Hostapon® SCI-78C for sodium cocoyl isethionate, or Hostapon® SCI-65C for blends of stearic acid and sodium cocoyl isethionate. Examples of other commercially available fatty acyl isethionates that can be used are "Jordapon®" surfactants from BASF, such as Jordapon® CI Prill or Jordapon® CI 65, and sodium cocoyl isethionate from Yongan Daily Chemical Co., such as YA-SCI-85® or YA-SCI-65®.

[0082] Sarcosinate surfactants have the general formula (III):

[0083] [ka] wherein R may be a saturated or unsaturated, straight or branched chain alkyl or alkenyl, alternatively an alkyl chain having 7 to 17 carbon atoms, alternatively an alkyl chain having 9 to 13 carbon atoms; M + may be H, sodium, potassium, ammonium, or triethanolammonium cation.

[0084] The sarcosinate surfactant may be selected from the group consisting of sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium myristoyl sarcosinate, TEA-cocoyl sarcosinate, ammonium cocoyl sarcosinate, ammonium lauroyl sarcosinate, dilinoleyl bis-lauroyl glutamate / lauroyl sarcosinate dimer, disodium lauroamphodiacetate, lauroyl sarcosinate, isopropyl lauroyl sarcosinate, potassium cocoyl sarcosinate, potassium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, TEA-cocoyl sarcosinate, TEA-lauroyl sarcosinate, TEA-oleoyl sarcosinate, TEA-palm kernel sarcosinate, and mixtures thereof.

[0085] Alternatively, the sarcosinate surfactant may be selected from the group consisting of sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium cocoyl sarcosinate, and mixtures thereof.

[0086] The glycinate surfactant may be selected from the group consisting of sodium cocoyl glycinate, sodium lauroyl glycinate, and mixtures thereof.

[0087] The sulfonate surfactant may be selected from the group consisting of alpha-olefin sulfonates, linear alkylbenzene sulfonates, sodium lauryl glucoside hydroxypropyl sulfonate, and mixtures thereof.

[0088] The sulfoacetate surfactant may be selected from the group consisting of sodium lauryl sulfonate, ammonium lauryl sulfonate, and mixtures thereof.

[0089] The glucose carboxylate surfactant may be selected from the group consisting of sodium lauryl glucoside carboxylate, sodium cocoyl glucoside carboxylate, and mixtures thereof.

[0090] The alkyl ether carboxylate surfactant may be selected from the group consisting of sodium laureth-4 carboxylate, laureth-5 carboxylate, laureth-13 carboxylate, sodium C12-13 pareth-8 carboxylate, sodium C12-15 pareth-8 carboxylate, and mixtures thereof.

[0091] The taurate surfactant may be selected from the group consisting of sodium methyl cocoyl taurate, sodium methyl lauroyl taurate, sodium methyl olenoyl taurate, and mixtures thereof.

[0092] The anionic surfactant that is not a glutamate surfactant may include lactates or lactylates. Non-limiting examples of lactates include sodium lactate. Non-limiting examples of lactylates include sodium lauroyl lactylate, sodium cocoyl lactylate, and mixtures thereof.

[0093] The total concentration of the additional anionic surfactants may be from about 0% to about 20% by weight of the dry fiber element and / or the dry dissolvable fibrous product, or the total concentration of the anionic surfactants that are not glutamate surfactants may be from about 0.5% to about 15% by weight of the dry fiber element and / or the dry dissolvable fibrous product.

[0094] The one or more surfactants of the one or more active agents may comprise a non-ionic surfactant, which may be selected from the group consisting of alkyl polyglucosides, alkyl glycosides, acyl glucamides, and mixtures thereof.

[0095] In that case, alkyl can be defined as a saturated or unsaturated, straight or branched chain alkyl chain having 6 to 30 carbon atoms, alternatively 8 to 22 carbon atoms, alternatively 9 to 18 carbon atoms. Acyl can then be defined as the formula RC(O)-, where R can be a saturated or unsaturated, straight or branched chain alkyl or alkenyl, alternatively an alkyl chain having 6 to 30 carbon atoms, alternatively 8 to 22 carbon atoms, alternatively 9 to 18 carbon atoms.

[0096] The alkyl glucoside may be selected from the group consisting of decyl glucoside, cocoyl glucoside, lauroyl glucoside, and mixtures thereof.

[0097] The acyl glucamide may be selected from the group consisting of lauroyl / myristoyl methyl glucamide, capryloyl / capryloyl methyl glucamide, cocoyl methyl glucamide, and mixtures thereof.

[0098] Alternatively, the nonionic surfactant may be selected from the group consisting of cocoamide monoethanolamine, lauroamide monoethanolamine, cocoyl glucoside, lauroyl glucoside, decyl glucoside, and mixtures thereof.

[0099] The total concentration of nonionic surfactants may be from about 0% to about 25% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article. Alternatively, the total concentration of nonionic surfactants may be from about 0.1% to about 15% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article. Alternatively, the total concentration of nonionic surfactants may be from about 0.5% to about 10% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article.

[0100] Suitable amphoteric or zwitterionic surfactants may include those described in US Pat. No. 5,104,646 and US Pat. No. 5,106,609.

[0101] Amphoteric surfactants can include those that can be broadly described as derivatives of aliphatic secondary and tertiary amines, where aliphatic radicals can be linear or branched, and aliphatic substituents can contain 8-18 carbon atoms, so that one carbon atom can contain anionic water-soluble groups, such as carboxy, sulfonate, phosphate or phosphonate.Examples of compounds that fit this definition can be sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropanesulfonate, N-alkyltaurine, such as that prepared by reacting dodecylamine with sodium isethionate according to the teaching of US Patent No. 2,658,072, N-higher alkylaspartic acid, such as that produced according to the teaching of US Patent No. 2,438,091, and the product described in US Patent No. 2,528,378.

[0102] The amphoteric surfactants described herein may be selected from the group consisting of sodium lauroamphoacetate, sodium cocoamphoacetate, disodium lauroamphodiacetate, disodium cocodiamphoetate, and mixtures thereof.

[0103] Zwitterionic surfactants suitable for use in co-surfactants of one or more active agents described herein may include those broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, where the aliphatic radical may be straight or branched, one of the aliphatic substituents may contain from 8 to 18 carbon atoms, and one carbon atom may contain an anionic group, e.g., carboxy, sulfonate, phosphate, or phosphonate.

[0104] Thus, the one or more surfactants of the one or more active agents may comprise at least an amphoteric or zwitterionic surfactant selected from the group consisting of cocoamidopropyl betaine, lauramidopropyl betaine, cocobetaine, lauryl betaine, lauryl hydroxysultaine, cocoamidopropyl hydroxysultaine, coco-hydroxysultaine, coco-sultaine, lauryl sultaine, sodium cocoamphoacetate, disodium cocoamphodiacetate, sodium lauroamphoacetate, disodium lauroamphodiacetate, lauramine oxide, lauryl hydroxysultaine, and mixtures thereof.

[0105] Examples of betaine zwitterionic surfactants include cocodimethylcarboxymethyl betaine, cocoamidopropyl betaine (CAPB), coco-betaine, lauryl amidopropyl betaine (LAPB), oleyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl alpha-carboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, lauryl bis-(2-hydroxyethyl)carboxymethyl betaine, stearyl bis-(2-hydroxypropyl)carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl bis-(2-hydroxypropyl)alpha-carboxyethyl betaine, and mixtures thereof. Examples of sulfobetaines include cocodimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis-(2-hydroxyethyl)sulfopropyl betaine, and mixtures thereof.

[0106] The total concentration of zwitterionic surfactants may be from about 0.5% to about 20% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article. Alternatively, the total concentration of nonionic surfactants may be from about 2% to about 15% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article. Alternatively, the total concentration of nonionic surfactants may be from about 4% to about 13% by weight based on the dry fiber elements and / or the dry dissolvable fibrous article.

[0107] cationic polymer The fibrous article may contain, based on the dry fibrous element and / or the dry dissolvable fibrous article, from about 0.05% to about 5% by weight of cationic polymer, from about 0.1% to about 3% by weight of cationic polymer, from about 0.2% to about 2.5% by weight of cationic polymer, from about 0.3% to about 2.0% by weight of cationic polymer, or from about 0.4% to about 1.0% by weight of cationic polymer.

[0108] The cationic polymer may have a weight average molecular weight of from about 500,000 g / mol to about 2,500,000 g / mol, alternatively from about 500,000 g / mol to about 2,000,000 g / mol, alternatively from about 500,000 g / mol to about 1,500,000, alternatively from about 500,000 g / mol to about 1,000,000, as measured by gel permeation chromatography. The cationic polymer may have a weight average molecular weight of greater than 500,000 g / mol, alternatively greater than 1,000,000 g / mol, as measured by gel permeation chromatography.

[0109] The cationic polymer may have a weight average charge density, when measured according to the Charge Density Test Method, of greater than 0.2 meq / g, alternatively greater than 0.4 meq / g, alternatively greater than 0.6 meg / g, alternatively greater than 0.8 meg / g, alternatively 1 meq / g, alternatively 1.2 meq / g, alternatively 1.5 meg / g, alternatively 2 meg / g, alternatively greater than 3 meg / g, alternatively greater than 5 meg / g. The cationic polymer may have a weight average charge density, when measured according to the Charge Density Test Method, of from about 0.4 meg / g to about 5 meg / g, alternatively from about 1 meg / g to about 3 meg / g, alternatively from about 1 meg / g to about 2.5 meg / g.

[0110] A variety of cationic polymers can be used herein, including, for example: Of these, the cationic polymers useful herein are preferably selected from polyquaternium-6, polyquaternium-7, polyquaternium-10, cationic guar, and combinations thereof.

[0111] Cationic Guar Polymer The hair care composition may contain (a) a cationic guar polymer. The cationic guar polymer is a cationically substituted galactomannan (guar) gum derivative. The guar gum used to prepare these guar gum derivatives is typically obtained as a naturally occurring material from the seeds of the guar plant. The guar molecule itself is a regularly branched linear mannan in which single-membered galactose units alternate with mannose units. The mannose units are linked to each other by β(1-4) glycosidic bonds. The galactose branches arise from α(1-6) bonds. The cationic derivatives of guar gum are obtained by the reaction between the hydroxyl groups of polygalactomannans and reactive quaternary ammonium compounds. The degree of substitution of cationic groups on the guar structure must be sufficient to provide the required cationic charge density described above.

[0112] The cationic guar polymer may have a weight average molecular weight of less than 2,200,000 g / mol, or from about 150,000 to about 2,000,000 g / mol, or from about 200,000 to about 1,900,000 g / mol, or from about 300,000 to about 1,800,000 g / mol, or from about 400,000 to about 1,700,000 g / mol, or from about 500,000 to about 1,600,000 g / mol. The cationic guar polymer may have a weight average molecular weight of greater than about 150,000 g / mol, alternatively greater than about 1,000,000 g / mol, alternatively greater than about 1,500,000 g / mol, alternatively greater than about 2,000,000 g / mol, and alternatively greater than about 2,500,000 g / mol.

[0113] The cationic guar polymer may have a weight average charge density of from about 0.2 meq / g to about 2.2 meg / g, or from about 0.3 meq / g to about 2.0 meg / g, or from about 0.4 meq / g to about 1.9 meg / g, or from about 0.5 meq / g to about 1.8 meg / g, or from about 0.6 meq / g to about 1.7 meg / g, or from about 0.6 meq / g to about 1.5 meq / g, or from about 0.6 meq / g to about 1.3 meg / g, and / or from about 0.7 meq / g to about 1.0 meg / g.

[0114] The cationic guar polymer may be formed from a quaternary ammonium compound. The quaternary ammonium compound for forming the cationic guar polymer may conform to the following general formula 1:

[0115] [ka] In the formula, R 3 , R 4 , and R 5 is a methyl or ethyl group, and R 6 is an epoxyalkyl group of general formula 2,

[0116] [ka] Or R 6 is a halohydrin group of general formula 3,

[0117] [ka] In the formula, R 7 is a C1-C3 alkylene, X is chlorine or bromine, and Z is an anion such as Cl-, Br-, I-, or HSO4-.

[0118] The cationic guar polymer may conform to the following general formula 4:

[0119] [ka] In the formula, R 8 is guar gum, R 4 , R 5 , R 6 , and R 7 is as defined above and Z is a halogen. The cationic guar polymer can conform to the following formula 5:

[0120] [ka]

[0121] Suitable cationic guar polymers may include cationic guar gum derivatives such as guar hydroxypropyltrimonium chloride. The cationic guar polymer is guar hydroxypropyltrimonium chloride. Specific examples of guar hydroxypropyltrimonium chloride include the Jaguar® series available from Rhone-Poulenc Incorporated, such as Jaguar® C-500 available from Rhodia. Jaguar® C-500 has a charge density of 0.8 meq / g and a weight average molecular weight of 500,000 g / mol. Another guar hydroxypropyltrimonium chloride with a charge density of about 1.1 meq / g and a weight average molecular weight of about 500,000 g / mol is available from Ashland. Additional guar hydroxypropyltrimonium chloride having a charge density of about 1.5 meq / g and a weight average molecular weight of about 500,000 g / mole is available from Ashland.

[0122] Other suitable guar hydroxypropyltrimonium chlorides include Hi-Care 1000, available from Rhodia, having a charge density of about 0.7 meq / g and a weight average molecular weight of about 600,000 g / mole; N-Hance 3269 and N-Hance 3270, available from Ashland, having a charge density of about 0.7 meq / g and a weight average molecular weight of about 425,000 g / mole; and N-Hance 3270, available from Ashland, having a charge density of about 0.7 meq / g and a weight average molecular weight of about 500,000 g / mole. 3271; BF-13, a borate-free guar with a charge density of about 1.1 meq / g and a weight average molecular weight of about 800,000, and BF-17, a borate-free guar with a charge density of about 1.7 meq / g and a MWt of about 800,000 (both available from Ashland); N-Hance CG17, which has a charge density of about 1.0 meq / g and a weight average molecular weight of about 1,600,000 g / mol and is available from Ashland; and N-Hance 3196, which has a charge density of about 0.7 meq / g and a weight average molecular weight of about 1,700,000 g / mol and is available from Ashland.

[0123] Cationic Synthetic Polymers The hair care composition may include (b) a cationic synthetic polymer that may have a weight average molecular weight of from about 1,000 g / mol to about 2,000,000 g / mol, and the cationic guar polymer may have a charge density of from about 2 meq / g to about 10 meq / g. The hair care composition may include from about 0.01% to about 2.5% of the cationic synthetic polymer, based on the total weight of the composition.

[0124] Cationic synthetic polymers include: i) one or more cationic monomer units, and optionally ii) one or more monomeric units that have a negative charge, and / or iii) non-ionic monomers. Here, the subsequent charge of the copolymer is positive. The ratio of these three monomers is represented by "m", "p", and "q", where "m" is the number of cationic monomers, "p" is the number of monomers with a negative charge, and "q" is the number of nonionic monomers.

[0125] The cationic polymer may be a water-soluble or dispersible, non-crosslinked, cationic synthetic polymer having the following structure:

[0126] [ka] wherein A may be one or more of the following cationic moieties:

[0127] [ka] wherein @ is an amide, alkylamide, ester, ether, alkyl, or alkylaryl; In the formula, Y is C1 to C22 alkyl, alkoxy, alkylidene, alkyl, or aryloxy; In the formula, Ψ is C1 to C22 alkyl, alkyloxy, alkylaryl, or alkylaryloxy; In the formula, Z is C1 to C22 alkyl, alkyloxy, aryl, or aryloxy; In the formula, R1 is H, C1-C4 linear or branched alkyl, In the formula, s is 0 or 1, and n is 0 or 1 or more, In the formula, T and R7 are C1-C22 alkyl; wherein X- is a halogen, hydroxide, alkoxide, sulfate, or alkyl sulfate.

[0128] In the above structure, the negatively charged monomer is defined by R2' being H, C1-C4 linear or branched alkyl, and R3 being:

[0129] [ka] wherein D is O, N, or S; wherein Q is NH or O; In the formula, u is 1 to 6, In the formula, t is 0 to 1, where J is an oxygenated functional group containing the following elements: P, S, C.

[0130] In the above structure, the nonionic monomer is defined by R2″ being H, C1-C4 linear or branched alkyl, R6 being linear or branched alkyl, alkylaryl, aryloxy, alkyloxy, alkylaryloxy, and β being defined as follows:

[0131] [ka] wherein G′ and G″ are independently O, S, or NH; and L is 0 or 1.

[0132] Examples of cationic monomers include aminoalkyl(meth)acrylates, (meth)aminoalkyl(meth)acrylamides; monomers containing at least one secondary, tertiary, or quaternary amine functional group, or a heterocyclic group containing a nitrogen atom, vinylamine, or ethyleneimine; diallyldialkylammonium salts; mixtures thereof, salts thereof, and macromonomers derived therefrom.

[0133] Further examples of cationic monomers include dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, ditertiobutylaminoethyl (meth)acrylate, dimethylaminomethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide, ethyleneimine, vinylamine, 2-vinylpyridine, 4-vinylpyridine, trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methyl sulfate, dimethylammonium ethyl (meth)acrylate benzyl chloride, 4-benzoylbenzyldimethylammonium ethyl acrylate chloride, trimethylammonium ethyl (meth)acrylamido chloride, trimethylammonium propyl (meth)acrylamido chloride, vinylbenzyltrimethylammonium chloride, and diallyldimethylammonium chloride.

[0134] Suitable cationic monomers include those of the formula -NR3 + (wherein R may be the same or different and represents a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, or a benzyl group, optionally having a hydroxyl group), and includes a quaternary ammonium group having an anion (counter ion). Examples of anions include halides such as chloride and bromide, sulfate, hydrosulfate, alkyl sulfate (containing, for example, 1 to 6 carbon atoms), phosphate, citrate, formate, and acetate.

[0135] Suitable cationic monomers include trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methyl sulfate, dimethylammonium ethyl (meth)acrylate benzyl chloride, 4-benzoylbenzyldimethylammonium ethyl acrylate chloride, trimethylammonium ethyl (meth)acrylamide chloride, trimethylammonium propyl (meth)acrylamide chloride, vinylbenzyl trimethylammonium chloride.

[0136] Further suitable cationic monomers include trimethylammoniumpropyl(meth)acrylamidochloride.

[0137] Examples of negatively charged monomers include alpha-ethylenically unsaturated monomers containing a phosphate or phosphonate group, alpha-ethylenically unsaturated monocarboxylic acids, monoalkyl esters of alpha-ethylenically unsaturated dicarboxylic acids, monoalkyl amides of alpha-ethylenically unsaturated dicarboxylic acids, alpha-ethylenically unsaturated compounds containing a sulfonic acid group, and salts of alpha-ethylenically unsaturated compounds containing a sulfonic acid group.

[0138] Suitable negatively charged monomers include acrylic acid, methacrylic acid, vinyl sulfonic acid, salts of vinyl sulfonic acid, vinylbenzene sulfonic acid, salts of vinylbenzene sulfonic acid, α-acrylamidomethylpropanesulfonic acid, salts of α-acrylamidomethylpropanesulfonic acid, 2-sulfoethyl methacrylate, salts of 2-sulfoethyl methacrylate, acrylamido-2-methylpropanesulfonic acid (AMPS), salts of acrylamido-2-methylpropanesulfonic acid, and styrenesulfonate (SS).

[0139] Examples of nonionic monomers include vinyl acetate, amides of alpha-ethylenically unsaturated carboxylic acids, esters of alpha-ethylenically unsaturated monocarboxylic acids with hydrogenated or fluorinated alcohols, polyethylene oxide (meth)acrylates (i.e., polyethoxylated (meth)acrylic acids), monoalkyl esters of alpha-ethylenically unsaturated dicarboxylic acids, monoalkyl amides of alpha-ethylenically unsaturated dicarboxylic acids, vinyl nitriles, vinylamine amides, vinyl alcohol, vinylpyrrolidone, and vinyl aromatic compounds.

[0140] Suitable nonionic monomers include styrene, acrylamide, methacrylamide, acrylonitrile, methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, n-butyl methacrylate, 2-ethyl-hexyl acrylate, 2-ethyl-hexyl methacrylate, 2-hydroxyethyl acrylate, and 2-hydroxyethyl methacrylate.

[0141] The anionic counterion (X-) associated with the cationic synthetic polymer can be any known counterion, so long as the polymer remains soluble or dispersible in water, the hair care composition, or the coacervate phase of the hair care composition, and so long as the counterion is physically and chemically compatible with the essential components of the hair care composition or does not otherwise unduly impair the performance, stability, or aesthetics of the product. Non-limiting examples of such counterions include halides (e.g., chlorine, fluorine, bromine, iodine), sulfate, and methylsulfate.

[0142] The cationic synthetic polymer has a molecular weight of about 1,500 g / mol to about 1,800,000 g / mol, or about 2,000 g / mol to about 1,700,000 g / mol, or about 3,000 g / mol to about 1,600,000 g / mol, or about 4,000 g / mol to about 1,500,000 g / mol, or about 5,000 g / mol to about 1,600,000 g / mol, or about 6,000 g / mol to about 1,500,000 g / mol, or about 7,000 g / mol to about 1,400,000 g / mol, or about 8,000 g / mol to about 1, The polymer may have a weight average molecular weight of 400,000 g / mol, or from about 9,000 g / mol to about 1,300,000 g / mol, or from about 10,000 g / mol to about 1,200,000 g / mol, or from about 11,000 g / mol to about 1,100,000 g / mol, or from about 25,000 g / mol to about 750,000 g / mol, or from about 50,000 g / mol to about 500,000 g / mol, or from about 75,000 g / mol to about 300,000 g / mol, and / or from about 100,000 g / mol to about 200,000 g / mol.

[0143] The cationic synthetic polymer can have a weight average charge density of from about 2.2 meq / g to about 9.5 meg / g, or from about 2.5 meq / g to about 8 meg / g, or from about 3 meq / g to about 8 meg / g, or from about 3.5 meq / g to about 7.5 meg / g, and / or from about 4 meq / g to about 7 meg / g.

[0144] The cationic synthetic polymer may include polydiallyldimethylammonium chloride (polyDADMAC). PolyDADMAC is also known as polyquaternium-6. Specific examples of polyDADMAC include Solvay's Mirapol® 100 series, Lubrizol's Merquat™ 100 series, and BASF's Salcare® SC 30. For example, Mirapol® 100s has a charge density of 6.2 meq / g and a weight average molecular weight of 150,000 g / mol and is available from Solvay. The cationic synthetic polymer may include a copolymer of DADMAC and acrylamide, known as polyquaternium-7. Examples of polyquaternium-7 include Merquat 550, Merquat S, Mirapol 550, Salcare SC10, Salcare SC11, and Rheocare CC7.

[0145] The hair care composition may further comprise (c) a cationic non-guar galactomannan polymer, (d) a cationic starch polymer, (e) a cationic copolymer of acrylamide monomers and cationic monomers, (f) a cationic cellulose polymer, or (g) a mixture of such polymers.

[0146] Cationic Non-Guar Galactomannan Polymers The dispersion composition may comprise a galactomannan polymer derivative having a mannose-to-galactose ratio of 5:1 to 1:1 on a monomer-to-monomer basis, the galactomannan polymer derivative being selected from the group consisting of cationic galactomannan polymer derivatives and amphoteric galactomannan polymer derivatives having a net positive charge. As used herein, the term "cationic galactomannan" refers to a galactomannan polymer having cationic groups attached thereto. The term "amphoteric galactomannan" refers to a galactomannan polymer having cationic and anionic groups attached thereto such that the polymer has a net positive charge.

[0147] Galactomannan polymers are present in the endosperm of legume seeds. Galactomannan polymers are composed of a combination of mannose and galactose monomers. Galactomannan molecules are linear mannans with single-membered galactose units branching at regular intervals on specific mannose units. The mannose units are linked to each other by β(1-4) glycosidic bonds. Galactose branches occur via α(1-6) linkages. The ratio of mannose monomers to galactose monomers varies depending on the plant species and is also influenced by climate. Non-guar galactomannan polymer derivatives may have a mannose-to-galactose ratio greater than 2:1 on a monomer-to-monomer basis. Suitable mannose-to-galactose ratios may be greater than about 3:1, and may be greater than about 4:1. Analysis of the mannose-to-galactose ratio is well known in the art and is typically based on measuring galactose content.

[0148] The gums used to prepare the non-guar galactomannan polymer derivatives are typically obtained as naturally occurring materials such as plant seeds or beans. Examples of various non-guar galactomannan polymers include, but are not limited to, tara gum (3 parts mannose / 1 part galactose), locust bean or carob (4 parts mannose / 1 part galactose), and cassia gum (5 parts mannose / 1 part galactose).

[0149] The galactomannan polymer derivative may be a cationic derivative of a non-guar galactomannan polymer, obtained by reacting the hydroxyl groups of the polygalactomannan polymer with a reactive quaternary ammonium compound. Suitable quaternary ammonium compounds for use in forming the cationic galactomannan polymer derivative include those conforming to the general formulas 1-5 defined above.

[0150] The cationic non-guar galactomannan polymer derivatives formed from the above reagents have the general formula 6:

[0151] [ka] wherein R is a gum. The cationic galactomannan derivative can be the gum hydroxypropyltrimethylammonium chloride, which can be more specifically represented by the following general formula 7:

[0152] [ka]

[0153] The galactomannan polymer derivative can be an amphoteric galactomannan polymer derivative having a net positive charge, which is obtained when the cationic galactomannan polymer derivative further comprises an anionic group.

[0154] The cationic non-guar galactomannan may have a mannose to galactose ratio of greater than about 4:1. The dispersion composition may comprise, by weight of the composition, the galactomannan polymer derivative. The hair care composition may comprise, by weight of the composition, about 0.05% to about 2% of the galactomannan polymer derivative.

[0155] (d) cationically modified starch polymers The dispersion composition may comprise a water-soluble cationically modified starch polymer. As used herein, the term "cationically modified starch" refers to starch to which cationic groups have been added before the starch has been degraded to achieve a relatively low weight average molecular weight, or to starch to which cationic groups have been added after the starch has been modified to achieve a desired weight average molecular weight. The definition of the term "cationically modified starch" also includes amphoterically modified starch. The term "amphoterically modified starch" refers to a starch hydrolysate to which cationic and anionic groups have been added.

[0156] The dispersion composition may comprise cationically modified starch polymers in the range of about 0.01% to about 10%, and / or about 0.05% to about 5%, by weight of the composition.

[0157] The cationically modified starch polymers disclosed in the present invention may have a percent of bound nitrogen of from about 0.5% to about 4%.

[0158] The dispersion composition may contain starch polymers that have been chemically modified by adding amino and / or ammonium groups to the starch molecule. Non-limiting examples of these ammonium groups include substituents such as hydroxypropyltrimonium chloride, trimethylhydroxypropylammonium chloride, dimethylstearylhydroxypropylammonium chloride, and dimethyldodecylhydroxypropylammonium chloride. See Solarek, DB, "Cationic Starches in Modified Starches: Properties and Uses," Wurzburg, OB, Ed., CRC Press, Inc., Boca Raton, Fla., 1986, pp. 113-125. Cationic groups may be added to the starch before it is degraded to a relatively low weight-average molecular weight, or the cationic groups may be added after such modification.

[0159] Cationically modified starch polymers generally have a degree of substitution of cationic groups of about 0.1 to about 7. As used herein, the "degree of substitution" of a cationically modified starch polymer is a measure of the average number of hydroxyl groups on each anhydroglucose unit that are derivatized with a substituent. Because each anhydroglucose unit has three possible hydroxyl groups available for substitution, the maximum possible degree of substitution is 3. The degree of substitution is expressed on a molar average basis as the number of moles of substituent per mole of anhydroglucose unit. The degree of substitution can be determined using proton nuclear magnetic resonance spectroscopy ("H NMR") techniques well known in the art. Suitable .sup.1H NMR methods include those described in "Observation on NMR Spectra of Starches in Dimethyl Sulfoxide, Iodine-Complexing, and Solvating in Water-Dimethyl Sulfoxide," Qin-Ji Peng and Arthur S. Perlin, Carbohydrate Research, 160 (1987), 57-72, and "An Approach to the Structural Analysis of Oligosaccharides by NMR Spectroscopy," J. Howard Bradbury and J. Grant Collins, Carbohydrate Research, 71 (1979), 15-25.

[0160] The source of starch before chemical modification can be selected from a variety of sources such as tubers, legumes, cereals, and grains, etc. Non-limiting examples of starch from this source can include corn starch, wheat starch, rice starch, waxy corn starch, oat starch, cassava starch, glutinous barley, waxy rice starch, glutinous rice starch, sweet rice starch, Amioca, potato starch, tapioca starch, oat starch, sago starch, sweet rice, or mixtures thereof.

[0161] The cationically modified starch polymer may be selected from degraded cationic corn starch, cationic tapioca, cationic potato starch, and mixtures thereof.

[0162] Starch may undergo one or more additional modifications before or after degradation to a relatively low weight average molecular weight. For example, these modifications may include crosslinking, stabilization, phosphorylation, and hydrolysis. Stabilization may include alkylation and esterification.

[0163] The cationically modified starch polymers may be incorporated into the composition in the form of hydrolyzed starch (e.g., acid, enzymatic, or alkaline degradation), oxidized starch (e.g., peroxide, peracid, hypochlorite, alkali, or any other oxidizing agent), physically / mechanically degraded starch (e.g., by the thermal mechanical energy input of processing equipment), or combinations thereof.

[0164] The optimal form of starch is one that dissolves easily in water to form a substantially transparent aqueous solution (transmittance at 600 nm of 80% or more). The transmittance of the composition is measured by ultraviolet-visible (UV / VIS) spectrophotometry, which measures the absorbance or transmittance of a sample of UV / VIS light using a Gretag Macbeth Colorimeter Color i 5 according to the relevant instructions. A light wavelength of 600 nm has been shown to be suitable for characterizing the transparency of cosmetic compositions.

[0165] Suitable cationically modified starches for use in the composition are available from known starch suppliers. Non-ionically modified starches that can be further derivatized to cationically modified starches known in the art may be suitable. Other suitable modified starch starting materials may be quaternized, as known in the art, to produce cationically modified starch polymers suitable for use in the present invention.

[0166] Starch Degradation Procedure: A starch slurry is prepared by mixing granular starch in water. The temperature is raised to about 35°C. Aqueous potassium permanganate is then added at a concentration of about 50 ppm based on starch. The pH is raised to about 11.5 with sodium hydroxide, and the slurry is stirred thoroughly to prevent the starch from settling. Next, an approximately 30% solution of hydrogen peroxide diluted in water is added until the peroxide concentration based on starch is about 1%. Additional sodium hydroxide is then added to return the pH to about 11.5. The reaction is completed over a period of about 1 to about 20 hours. The mixture is then neutralized with dilute hydrochloric acid. The degraded starch is recovered by filtration, washed, and dried.

[0167] Cationic copolymer of acrylamide monomer and cationic monomer The dispersion composition may include a cationic copolymer of an acrylamide monomer and a cationic monomer. The cationic copolymer may be a synthetic cationic copolymer of an acrylamide monomer and a cationic monomer.

[0168] The cationic copolymer may include: (i) an acrylamide monomer of formula AM:

[0169] [ka] In the formula, R 9 is H or C 1~4 alkyl, and R 10 and R 11 are independently H, C 1~4 alkyl, CH2OCH3, CH2OCH2CH(CH3)2, and phenyl, or together selected from the group consisting of C 3~6 It is cycloalkyl. (ii) a cationic monomer conforming to the following formula C:

[0170] [ka] wherein k=1, v, v′, and v″ are each independently an integer from 1 to 6, w is zero or an integer from 1 to 10, and X - is an anion.

[0171] The cationic monomer conforms to the formula CM, where k=1, v=3, and w=0, z=1, and X - is Cl - and the following structure can be formed:

[0172] [ka]

[0173] The above structure is sometimes referred to as a diquat. The cationic monomer can conform to the formula CM, where v and v" are each 3, v'=1, w=1, y=1, and X - is Cl - and so it becomes:

[0174] [ka]

[0175] The above structure is sometimes referred to as a triquat.

[0176] The acrylamide monomer can be either acrylamide or methacrylamide.

[0177] The cationic copolymer (b) can be AM:TRIQUAT, which is a copolymer of acrylamide and 1,3-propanediaminium, N-[2-[[[dimethyl[3-[(2-methyl-1-oxo-2-propenyl)amino]propyl]ammonio]acetyl]amino]ethyl]2-hydroxy-N,N,N',N',N'-pentamethyl-, trichloride. AM:TRIQUAT is also known as polyquaternium 76 (PQ76). AM:TRIQUAT can have a charge density of 1.6 meq / g and a molecular weight of 1,100,000 g / mol.

[0178] The cationic copolymer may be an acrylamide monomer and a cationic monomer, wherein the cationic monomer is selected from the group consisting of dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, ditertiobutylaminoethyl (meth)acrylate, dimethylaminomethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide; ethyleneimine, vinylamine, 2-vinylpyridine, 4-vinylpyridine; trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methyl sulfate, dimethylammonium ethyl (meth)acrylate benzyl chloride, 4-benzoylbenzyldimethylammonium ethyl acrylate chloride, trimethylammonium ethyl (meth)acrylamido chloride, trimethylammonium propyl (meth)acrylamido chloride, vinylbenzyl trimethylammonium chloride, diallyldimethylammonium chloride, and mixtures thereof.

[0179] The cationic copolymer comprises a cationic monomer selected from the group consisting of cationic monomers including trimethylammonium ethyl (meth)acrylate chloride, trimethylammonium ethyl (meth)acrylate methyl sulfate, dimethylammonium ethyl (meth)acrylate benzyl chloride, 4-benzoylbenzyl dimethylammonium ethyl acrylate chloride, trimethylammonium ethyl (meth)acrylamide chloride, trimethylammonium propyl (meth)acrylamide chloride, vinylbenzyl trimethylammonium chloride, and mixtures thereof.

[0180] The cationic copolymer may be water-soluble. The cationic copolymer may be formed from (1) a copolymer of (meth)acrylamide and a (meth)acrylamide-based cationic monomer, and / or a hydrolytically stable cationic monomer, and (2) a terpolymer of (meth)acrylamide, a cationic (meth)acrylic acid ester-based monomer, a (meth)acrylamide-based monomer, and / or a hydrolytically stable cationic monomer. The cationic (meth)acrylic acid ester-based monomer may be a cationized ester of (meth)acrylic acid containing a quaternized nitrogen atom. The cationized ester of (meth)acrylic acid containing a quaternized nitrogen atom may be a dialkylaminoalkyl (meth)acrylate quaternized at C1 to C3 in the alkyl and alkylene groups. The cationized ester of (meth)acrylic acid containing a quaternized nitrogen atom is selected from the group consisting of ammonium salts of dimethylaminomethyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, diethylaminomethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, and diethylaminopropyl (meth)acrylate, all quaternized with methyl chloride. The cationized ester of (meth)acrylic acid containing a quaternized nitrogen atom can be dimethylaminoethyl acrylate (ADAME-Quat), which can be quaternized with an alkyl halide, methyl chloride, benzyl chloride, or dimethyl sulfate. When (meth)acrylamide is the main component, the cationic monomer can be dialkylaminoalkyl (meth)acrylamide quaternized at C1 to C3 in the alkyl and alkylene groups, or dimethylaminopropyl acrylamide quaternized with an alkyl halide, methyl chloride, benzyl chloride, or dimethyl sulfate.

[0181] The cationic monomers based on (meth)acrylamide are dialkylaminoalkyl(meth)acrylamides quaternized at C1 to C3 in the alkyl and alkylene groups. The cationic monomers based on (meth)acrylamide are dimethylaminopropylacrylamides quaternized with alkyl halides, particularly methyl chloride, benzyl chloride, or dimethyl sulfate.

[0182] The cationic monomer is a hydrolytically stable cationic monomer. In addition to dialkylaminoalkyl (meth)acrylamide, the hydrolytically stable cationic monomer can be any monomer that can be considered stable to the OECD hydrolysis test. The cationic monomer is hydrolytically stable, and the hydrolytically stable cationic monomer is selected from the group consisting of diallyldimethylammonium chloride and water-soluble cationic styrene derivatives.

[0183] The cationic copolymer is a terpolymer of acrylamide, 2-dimethylammoniumethyl(meth)acrylate quaternized with methyl chloride (ADAME-Q), and 3-dimethylammoniumpropyl(meth)acrylamide quaternized with methyl chloride (DIMAPA-Q). The cationic copolymer is formed from acrylamide and acrylamidopropyltrimethylammonium chloride, which has a charge density of about 1.0 meq / g to about 3.0 meq / g.

[0184] The cationic copolymer is trimethylammoniopropyl methacrylamide chloride-N-acrylamide copolymer, also known as AM:MAPTAC. AM:MAPTAC may have a charge density of about 1.3 meq / g and a molecular weight of about 1,100,000 g / mol. The cationic copolymer is AM:ATPAC. AM:ATPAC may have a charge density of about 1.8 meq / g and a molecular weight of about 1,100,000 g / mol.

[0185] Cationic Cellulose Polymer A suitable cationic cellulose polymer is a salt of hydroxyethyl cellulose reacted with trimethylammonium-substituted epoxide, referred to in the art (CTFA) as Polyquaternium 10, available from Dow / Amerchol Corp. (Edison, NJ, USA) in the Polymer LR, JR, and KG series of polymers. Another suitable type of cationic cellulose is a polymeric quaternary ammonium salt of hydroxyethyl cellulose reacted with lauryldimethylammonium-substituted epoxide, referred to in the art (CTFA) as Polyquaternium 24. These materials are available from Dow / Amerchol Corp. under the trade name Polymer LM-200. Another suitable type of cationic cellulose is a polymeric quaternary ammonium salt of hydroxyethyl cellulose reacted with lauryldimethylammonium-substituted epoxide and trimethylammonium-substituted epoxide, referred to in the art (CTFA) as Polyquaternium 67. These materials are available from Dow / Amerchol Corp. under the trade names SoftCAT Polymer SL-5, SoftCAT Polymer SL-30, Polymer SL-60, Polymer SL-100, Polymer SK-L, Polymer SK-M, Polymer SK-MH, and Polymer SK-H.

[0186] Elongation aid The fiber elements may contain elongation aids, non-limiting examples of which may include polymers, other elongation aids, and combinations thereof.

[0187] In one embodiment, the elongation aid has a weight average molecular weight of at least about 500,000 Da. The weight average molecular weight of the elongation aid is from about 500,000 Da to about 25,000,000 Da, alternatively from about 800,000 Da to about 22,000,000 Da, alternatively from about 1,000,000 Da to about 20,000,000 Da, and alternatively from about 2,000,000 Da to about 15,000,000 Da. Relatively higher weight average molecular weight elongation aids may be preferred in some embodiments of the present invention due to their ability to increase elongational melt viscosity and reduce melt fracture.

[0188] When used in a meltblowing process, the elongation aid can be added to the compositions of the present invention in an amount effective to appreciably reduce melt fracture and capillary breakage of the fibers during the spinning process, allowing for the melt spinning of substantially continuous fibers with a relatively consistent diameter. Regardless of the process used to produce the fiber elements and / or particles, the elongation aid, if used, can be present in one embodiment from about 0.001% to about 10% by weight of the dry fiber elements and / or dry fibrous article, in another embodiment from about 0.005 to about 5% by weight of the dry fiber elements and / or dry fibrous article, in yet another embodiment from about 0.01 to about 1% by weight of the dry fiber elements and / or dry fibrous article, and in another embodiment from about 0.05% to about 0.5% by weight of the dry fiber elements and / or dry fibrous article.

[0189] Non-limiting examples of polymers that can be used as elongation aids can include alginate, carrageenan, pectin, chitin, guar gum, xanthan gum, agar, gum arabic, karaya gum, tragacanth gum, locust bean gum, alkyl cellulose, hydroxyalkyl cellulose, carboxyalkyl cellulose, and mixtures thereof.

[0190] Non-limiting examples of other elongation aids may include modified and unmodified polyacrylamide, polyacrylic acid, polymethacrylic acid, polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, polyethylene vinyl acetate, polyethyleneimine, polyamides, polyalkylene oxides (including polyethylene oxide, polypropylene oxide, polyethylene propylene oxide), and mixtures thereof.

[0191] Optional Ingredients The article may optionally comprise from about 5% to about 50% effervescent particles by weight, and in one embodiment from about 10% to about 30% effervescent particles by weight, and in one embodiment from about 5% to about 20% effervescent particles by weight. A non-limiting example of an effervescent particle comprises sodium bicarbonate and citric acid. In one embodiment, the ratio of sodium bicarbonate to citric acid is from about 0.5:1 to about 5:1.

[0192] The article may optionally comprise from about 1% to about 25% by weight of plasticizer, and in one embodiment from about 3% to about 20% by weight of plasticizer, and in one embodiment from about 5% to about 15% by weight of plasticizer.

[0193] If present in the Article, non-limiting examples of suitable plasticizers include polyols, copolyols, polycarboxylic acids, polyesters, and dimethicone copolyols.

[0194] Examples of useful polyols include, but are not limited to, sugar alcohols such as glycerin, diglycerin, propylene glycol, ethylene glycol, butylene glycol, pentylene glycol, cyclohexanedimethanol, hexanediol, polyethylene glycol (200-600), sorbitol, mannitol, lactitol, isosorbide, glucamine, N-methylglucamine, and other monohydric and polyhydric relatively low weight average molecular weight alcohols (e.g., C2-C8 alcohols); monosaccharides, disaccharides, and oligosaccharides such as fructose, glucose, sucrose, maltose, lactose, and high fructose corn syrup solids, and ascorbic acid.

[0195] Examples of polycarboxylic acids include, but are not limited to, citric acid, maleic acid, succinic acid, polyacrylic acid, and polymaleic acid.

[0196] Examples of suitable polyesters include, but are not limited to, glycerol triacetate, acetylated monoglyceride, diethyl phthalate, triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate.

[0197] Examples of suitable dimethicone copolyols include, but are not limited to, PEG-12 dimethicone, PEG / PPG-18 / 18 dimethicone, and PPG-12 dimethicone.

[0198] Other suitable plasticizers include alkyl and aryl phthalates; naphthalates; lactates (e.g., sodium, ammonium, and potassium salts); Sorbeth-30; urea; lactic acid; sodium pyrrolidone carboxylic acid (PCA); sodium hyaluronate or hyaluronic acid; soluble collagen; modified proteins; monosodium L-glutamate; alpha and beta hydroxyl acids, such as glycolic acid, lactic acid, citric acid, maleic acid, and salicylic acid; glyceryl polymethacrylate; polymeric plasticizers such as polyquaterniums; proteins and amino acids, such as glutamic acid, aspartic acid, and lysine; hydrogenated starch hydrolysates; and other relatively low weight average molecular weight esters (e.g., C2-C6). 10 esters of alcohols and acids); and any other water soluble plasticizers known to those skilled in the food and plastics industries; and mixtures thereof.

[0199] EP 0283165(B1) discloses suitable plasticizers including glycerol derivatives such as propoxylated glycerol.

[0200] The article may include other optional ingredients known for use in or otherwise useful in compositions, provided that such optional materials are compatible with the selected essential materials described herein or do not unduly impair product performance.

[0201] Such optional ingredients are most typically materials 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).

[0202] Suitable emulsifiers as optional ingredients herein include mono- and diglycerides, fatty alcohols, polyglycerol esters, propylene glycol esters, sorbitan esters, and other known emulsifiers or emulsifiers otherwise commonly used to stabilize air interfaces, such as those used in the preparation of aerated food products such as cakes and other baked goods and confectionery products, or in the stabilization of cosmetic products such as hair mousses.

[0203] Further non-limiting examples of such optional ingredients include preservatives, fragrances or fragrances, colorants or dyes, conditioning agents, hair bleaches, thickeners, moisturizers, emollients, pharmaceutical actives, vitamins or nutrients, sunscreens, deodorants, sensates, botanical extracts, nutrients, astringents, cosmetic particles, absorbent particles, adhesive particles, hair fixatives, fibers, reactive agents, whitening agents, tanning agents, anti-dandruff agents, fragrances, stripping agents, acids, bases, moisturizers, enzymes, suspending agents, hair colorants, hair perm agents, pigment particles, acne inhibitors, antibacterial agents, sunscreens, tanning agents, exfoliating particles, hair thickening or growth agents, insect repellents, shaving lotions, co-solvents or other additional solvents, and other similar materials. Further non-limiting examples of optional ingredients include encapsulated perfumes such as with beta-cyclodetrin, polymer microcapsules, starch encapsulated accords, and combinations thereof.

[0204] Suitable conditioning agents may optionally be added to the article and may include high melting point fatty materials and silicone conditioning agents. Suitable materials are discussed in U.S. Patent Application Publication Nos. 2008 / 0019935, 2008 / 0242584, and 2006 / 0217288.

[0205] Physical properties of soluble solid fibrous articles (structures) In the case of fibrous articles, the articles comprise a significant number of dissolvable fibers having an average diameter of less than about 150 micrometers, alternatively less than about 100 micrometers, alternatively less than about 10 micrometers, alternatively less than about 1 micrometer, with a relative standard deviation of less than 100%, alternatively less than 80%, alternatively less than 60%, alternatively less than 50%, e.g., within a range of 10% to 50%. As used herein, a significant number means at least 10% of the total dissolvable fibers, alternatively at least 25% of the total dissolvable fibers, alternatively at least 50% of the total dissolvable fibers, alternatively at least 75% of the total dissolvable fibers. A significant number may be at least 99% of the total dissolvable fibers. Alternatively, about 50% to about 100% of the total dissolvable fibers may have an average diameter of less than about 10 micrometers. Dissolvable fibers produced by the methods of the present disclosure have a significant number of dissolvable fibers having an average diameter of less than about 1 micrometer, i.e., submicrometer fibers. In embodiments, the dissolvable solid article may have about 25% to about 100% of the total dissolvable fibers having an average diameter less than about 1 micrometer, or about 35% to about 100% of the total dissolvable fibers having an average diameter less than about 1 micrometer, or about 50% to about 100% of the total dissolvable fibers having an average diameter less than about 1 micrometer, or about 75% to about 100% of the total dissolvable fibers having an average diameter less than about 1 micrometer.

[0206] The percent porosity of the dissolvable solid article is at least about 25%, alternatively at least about 50%, alternatively at least about 60%, alternatively at least about 70%, alternatively at least about 80%. The porosity of the dissolvable solid article is no more than about 99%, alternatively no more than about 98%, alternatively no more than about 95%, alternatively no more than about 90%. The porosity of the article is determined according to the procedure set forth in the definition of "porosity" above.

[0207] Pores of a wide range of effective sizes can be accommodated. The pore size distribution across the cross section of the article can be symmetrical or asymmetrical.

[0208] The article may be flexible and have a distance to peak force of about 6 mm to about 30 mm, about 7 mm to about 25 mm, or about 8 mm to about 20 mm, or about 9 mm to about 15 mm.

[0209] The article can be characterized in one aspect by its specific surface area. 2 / g~approx.0.25m 2 / g, or approximately 0.035 m 2 / g~approx.0.22m 2 / g, or approximately 0.04m 2 / g ~ approx. 0.19m 2 / g, or approximately 0.045m 2 / g~approx.0.16m 2 / g specific surface area.

[0210] The article may be a flat flexible article in the form of a pad, strip, or tape having a thickness of about 0.5 mm to about 10 mm, alternatively about 1 mm to about 9 mm, alternatively about 2 mm to about 8 mm, alternatively about 3 mm to about 7 mm, as measured by the following technique. The article may also be a sheet having a thickness of about 5 mm to about 6.5 mm. Alternatively, two or more sheets are combined to form an article having a thickness of about 5 mm to about 10 mm.

[0211] The item weighs approximately 200 grams / m 2 ~approximately 2,000 grams / m 2 , or about 400 g / m 2 ~Approx. 1,200g / m 2 , or approximately 600 g / m 2 ~Approx. 2,000g / m 2 , or about 700 g / m 2 ~Approx. 1,500g / m 2 The sheet may have a basis weight of

[0212] The item is approximately 0.08 g / cm 3 ~Approx. 0.40g / cm 3 , or about 0.08 g / cm 3 ~Approx. 0.38g / cm 3 , or about 0.10 g / cm3 ~Approx. 0.25g / cm 3 , or about 0.12 g / cm 3 ~Approx. 0.20g / cm 3 The dry density may be

[0213] The article may have a hand dissolution value, as determined by the hand dissolution method described below, of less than about 20 strokes, alternatively less than about 15 strokes, alternatively less than 12 strokes.

[0214] Non-limiting examples of other fibrous articles suitable for the present invention are disclosed in U.S. Pat. Nos. 8,980,816 and 9,139,802, U.S. Patent Application Publication No. 2013 / 0171421, and U.S. Patent Application No. 16 / 912876, which are incorporated herein by reference.

[0215] How to use The dissolvable solid substrates described herein can be used to cleanse and / or treat hair, hair follicles, skin, teeth, and the oral cavity. Methods for treating these consumer substrates may include: a) applying an effective amount of the structure to the hands; b) wetting the structure with water to dissolve the solids; c) applying the dissolved material to a target consumer substrate, such as to clean or treat the target consumer substrate; and d) rinsing the diluted treatment composition from the consumer substrate. These steps can be repeated as many times as necessary to achieve the desired cleansing and / or treatment effect.

[0216] Useful methods for providing benefits to hair, hair follicles, skin, teeth, and / or oral cavity include applying a composition according to the first embodiment to those target consumer substrates in need of conditioning.

[0217] Alternatively, a useful method for conditioning the condition of hair, hair follicles, skin, teeth, or oral cavity comprises applying one or more of the compositions described herein to these target consumer substrates in need of conditioning.

[0218] The amount of composition applied, frequency of application, and duration of use will vary widely depending on the purpose of application, the level of components in a given composition, and the level of control desired. For example, when applying the composition to a whole body or scalp treatment, an effective amount generally ranges from about 0.5 grams to about 10 grams, alternatively from about 1.0 grams to about 5 grams, and alternatively from about 1.5 grams to about 3 grams.

[0219] Product Type and Item Non-limiting examples of products utilizing the dissolvable solid structures include hand cleansing substrates, tooth cleaning or treatment substrates, oral substrates, hair shampoo or other hair treatment substrates, body cleansing substrates, substrates for shaving preparation, personal care substrates containing medicinal or other skin care actives, moisturizing substrates, sunscreen substrates, long-term skin benefit agent substrates (e.g., vitamin-containing substrates, alpha-hydroxy acid-containing substrates, etc.), deodorizing substrates, fragrance-containing substrates, and the like.

[0220] Preferably, the dissolvable 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, even more preferably a rinse-off hair care product containing a non-sulfate surfactant.

[0221] Disclosed herein are commercial products comprising one or more of the dissolvable solid structures described herein, and communications directing consumers to dissolve the structures and apply the dissolved mixture to hair, hair follicles, skin, teeth, or oral cavity to achieve a benefit for the target consumer substrate, i.e., a fast-foaming foam, a fast-rinsing foam, a clean-rinsing foam, or combinations thereof. The communications may be printed material affixed directly or indirectly to packaging containing the dissolvable solid structures or to the dissolvable solid structures themselves. Alternatively, the communications may be electronic or broadcast messages associated with the article of manufacture. Alternatively, the communications may describe at least one potential use, function, distinctive feature, and / or characteristic of the article of manufacture.

[0222] Method for making fiber elements and articles The fiber elements of the present invention may be manufactured by any suitable process. Non-limiting examples of suitable processes for manufacturing fiber elements are described below.

[0223] In one embodiment, as shown in FIGS. 1 and 2, a method 46 for making fiber elements 32 according to the present invention includes: a. providing a filament-forming composition 48; b. spinning the filament-forming composition 48 into one or more fiber elements 32, such as filaments, such as through a spinning die 50.

[0224] As shown in FIG. 2 , the spinning die 50 may include a plurality of fiber element forming cavities 52 including melt capillaries 54 surrounded by concentric attenuation fluid holes 56 through which a fluid, such as air, passes to facilitate attenuation of the filament-forming composition 48 into fiber elements 32 as it exits the fiber element forming cavities 52.

[0225] In one example, during the method for making fiber elements, any volatile solvent, such as water, present in the filament-forming composition 48 is removed, such as by drying, as the fiber elements 32 are formed. In one example, more than 30% by weight and / or more than 40% by weight and / or more than 50% by weight and / or more than 60% by weight of the volatile solvent, such as water, of the filament-forming composition is removed, such as by drying the produced fiber elements, during the spinning process.

[0226] In one embodiment, as the fiber elements exit the fiber element forming holes 52, they are collected on a belt above a vacuum source, referred to as the forming zone. The fiber elements may remain on the forming zone for the following times and temperatures: about 150°F (65.6°C) to about 160°F (71.1°C) for about 50 to about 60 seconds, and / or about 170°F (65.6°C) to about 180°F (82.2°C) for about 30 to about 40 seconds, and / or about 200°F (93.3°C) to about 215°F (101.7°C) for about 5 to about 20 seconds.

[0227] In one embodiment, it is apparent that the melt spinning temperature can be from about 70°F to about 95°F to allow for a balance of solvent evaporation, residence time, and heat exposure, while thermal drying can be performed at temperatures from about 340°F (171.1°C) to about 350°F (176.7°C) for about 50 to about 60 seconds, or from about 390°F (198.9°C) to about 400°F (204°C) for about 30 to about 40 seconds, or from 415°F (212.8°C) to 470°F (243.3°C) for about 5 to about 20 seconds, etc.

[0228] The filament-forming composition is spun into one or more fiber elements and / or particles by any suitable spinning process (such as meltblowing, spunbonding, electrospinning, and / or rotary spinning). In one example, the filament-forming composition is spun into a plurality of fiber elements and / or particles by meltblowing. For example, the filament-forming composition may be pumped from a tank to a meltblown spinnerette. Upon exiting one or more of the filament-forming holes in the spinneret, the filament-forming composition is attenuated by air to form one or more fiber elements and / or particles. The fiber elements and / or particles may then be dried to remove any residual solvent (e.g., water) used for spinning.

[0229] The fibrous elements and / or particles of the present invention may be collected on a belt, such as a patterned belt, to form a fibrous article comprising the fibrous elements and / or particles.

[0230] Test Method Basis weight measurement Generally, the basis weight of a material or article (including a dissolvable solid structure) is measured by first cutting a sample to a known area using a die cutter or equivalent, then measuring and recording the weight of the sample on a top-loading balance with a minimum resolution of 0.01 g, and then finally calculating the basis weight as follows:

[0231] Basis weight (g / m 2 ) = Weight of pad (g)

[0232]

number

[0233] The preferred pad sample size for determining basis weight is 10 cm 2 The dissolvable solid structure measured is greater than 10 cm and must be cut with a precision die cutter to have the desired shape. 2 If it is less than 1 / 2, then the calculation may be modified appropriately to allow for a smaller sampling area to determine the basis weight.

[0234] In this example, 17.28 cm 2 The basis weight was calculated based on the total dissolvable solids structure having a known area of ​​1 / 2. Therefore, the basis weight calculation is:

[0235]

number

[0236] Hand dissolution test method Required materials: Dissolvable solid structures to be tested: Three to five 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 hand dissolution value for the dissolvable solid structure. For this method, the entire consumer-saleable or consumer-use dissolvable solid structure is tested. If the entire consumer-saleable or consumer-use dissolvable solid structure has a footprint greater than 50 cm2, the footprint is first measured to determine the average hand dissolution value for the dissolvable solid structure. 2 The dissolvable solid structure is cut into pieces. Nitrile gloves 10cc syringe Plastic weighing boat (approximately 3 inches by 3 inches) 100mL glass beaker Water (Cincinnati city water or equivalent with the following characteristics: total hardness = 155 mg / L (as CaCO2); calcium content = 33.2 mg / L; magnesium content = 17.5 mg / L; phosphate content = 0.0462 mg / L) The water used has a hardness of 7 gpg and a temperature of 40°C + / - 5°C.

[0237] protocol: 1. Add 80 mL of water to a glass beaker. Add 300-500 mL of water to a glass beaker. 2. Heat the water in the beaker until the water reaches a temperature of 40°C ± 5°C. 3. Transfer 10 mL of water from the beaker to the weigh boat via syringe. 4. Within 10 seconds of transferring the water to the weigh boat, place the dissolvable solid structure sample in the palm of your gloved hand (your non-dominant hand, cupped to hold the dissolvable solid structure sample). 5. Using your dominant hand, quickly add water from the weigh boat to the soluble solid structure sample, allowing it to immediately wet for 5-10 seconds. 6. Using your opposite dominant hand (also gloved), rub with two rapid circular strokes. 7. After two strokes, visually inspect the dissolving solid structure sample in your hand. If the dissolving solid structure sample is completely dissolved, record the number of strokes = 2 dissolving strokes. If not completely dissolved, rub the remaining dissolving solid structure sample with two more circular strokes (for a total of four strokes) and observe the degree of dissolution. If the dissolving solid structure sample does not contain solid pieces after two more strokes, record the number of strokes = 4 dissolving strokes. If the dissolving solid structure sample still contains solid pieces of the dissolving solid structure sample that have not dissolved after a total of four strokes, continue to rub the remaining dissolving solid structure sample with two more circular strokes until the dissolving solid structure sample is completely dissolved or until a total of 30 strokes is reached, whichever comes first, and check whether any remaining solid pieces of the dissolving solid structure sample remain after each additional two strokes. Record the total number of strokes. Record 30 dissolving strokes even if solid dissolving solid structure sample pieces remain after the maximum of 30 strokes. 8. Repeat this process for each of the four more dissolvable solid structure samples. 9. Calculate the arithmetic mean of the recorded dissolution stroke values ​​for the five individual dissolvable solid structure samples and record as the mean hand dissolution value for the dissolvable solid structure. Report the mean hand dissolution value to the nearest single dissolution stroke unit.

[0238] Fiber structure - fiber diameter For fibrous structures, the diameter of dissolvable fibers in a web sample is determined using a scanning electron microscope (SEM) or optical microscope and image analysis software. A magnification of 200x to 10,000x is selected to ensure adequate magnification of the fibers for measurement. When using an SEM, samples are sputtered with gold or palladium compounds to prevent charging and vibration of the fibers in the electron beam. A manual procedure is used to determine fiber diameter from images captured by the SEM or optical microscope (on a monitor screen). Using the mouse and cursor tools, the edge of a randomly selected fiber is located and then measured across its width (i.e., perpendicular to the current fiber direction) to the other edge of the fiber. A calibrated image analysis tool with a scale provides scaling to obtain actual readings in micrometers (μm). Using the SEM or optical microscope, several fibers are randomly selected across the web sample. At least two specimens are cut from the web (or the web within a product) and tested using this method. For statistical analysis, at least 100 such measurements are performed in total, and all data is then recorded. The recorded data is used to calculate the mean (average) fiber diameter, the standard deviation of the fiber diameter, and the median fiber diameter. Another useful statistic is the calculation of the amount of fiber population below a certain upper limit. To determine this statistic, the software is programmed to count how many of the fiber diameter results are below the upper limit, and this count (divided by the total number of data and multiplied by 100%) is reported in percent as the percent below the upper limit (e.g., percent below 1 micrometer in diameter, or % submicron). We consider the measured diameter (in micrometers) of individual round fibers as d i It is expressed as:

[0239] When a fiber has a non-circular cross section, the fiber diameter measurement is determined as and equal to the hydraulic diameter, which is the cross-sectional area of ​​the fiber multiplied by 4 divided by the perimeter of the cross section of the fiber (circumference in the case of hollow fibers). The number average diameter, or mean diameter, is d num It is calculated as:

[0240]

number

[0241] Moisture content test method The moisture content (moisture) present in fibrous elements, particles, and / or fibrous articles is measured using the following moisture content test method. Pre-cut sheets of fibrous elements, particles, and / or fibrous articles, or portions thereof ("samples"), are placed in a room conditioned to a temperature of 22°C ± 2°C and a relative humidity of 42% ± 4% for at least 24 hours prior to testing. Each fibrous article sample has an area of ​​at least 4 square inches but is small enough to fit properly on the weighing pan of a balance. Using a balance capable of measuring to at least four decimal points under the above temperature and humidity conditions, the weight of the sample is recorded every 5 minutes until a change in weight from the previous weight of less than 0.5% is detected within 10 minutes. The final weight is recorded as the "equilibrated weight." Within 10 minutes, the sample is placed on foil in a forced air oven to dry at 22°C ± 2°C and a relative humidity of 42% ± 4% for 24 hours. After 24 hours of drying, the sample is removed and its weight is measured within 15 seconds. This weight is called the "dry weight" of the sample.

[0242] Calculate the moisture (water) content of the sample as follows:

[0243]

number

[0244] combination A dissolvable solid fibrous shampoo article comprising a plurality of fibrous elements, a. about 1% to about 50% by weight on a dry matter basis of a polymeric structurant; b. about 0.1% to about 5% by weight of a cationic polymer on a dry matter basis; c. about 20% to about 70% by weight of a surfactant on a dry basis; d. A salt comprising an inorganic salt and an organic salt, the inorganic salt being present at a concentration of about 0% to less than 5% (excluding 5%) by weight on a dry basis, and the organic salt being present at a concentration of about 1% to about 18% by weight on a dry basis; Including, A dissolvable solid fibrous shampoo article in which a plurality of fibrous elements are intertwined or otherwise bonded to form the fibrous article. The article according to the above feature, comprising, on a dry article basis, preferably about 7% by weight to about 18% by weight, more preferably about 8% by weight to about 16% by weight of the salt, including the inorganic salt and the organic salt. The article according to any of the preceding characteristics, wherein the organic salt is contained in a concentration of preferably about 2% to about 16% by weight, more preferably about 3% to about 14% by weight, and more preferably about 5.2% to about 14% by weight, based on the dry article. The article according to any of the preceding aspects, wherein the inorganic salt is contained in a concentration of preferably about 1.2% to about 4.9% by weight, more preferably about 1.5% to about 4.8% by weight, based on the dry article. The article of any of the preceding features, wherein the organic salt is a salt of an organic acid. The article according to any of the preceding aspects, wherein the organic acid has an average molecular weight of about 80 to about 400 daltons, preferably about 80 to about 200 daltons, and more preferably about 90 to about 150 daltons. The article of any of the preceding features, wherein the organic acid is selected from the group consisting of lactic acid, citric acid, oxalic acid, malonic acid, tartronic acid, fumaric acid, maleic acid, malic acid, and tartaric acid, and combinations thereof, and is preferably lactic acid. The surfactant is a surfactant system, and the surfactant system comprises: i. about 35% to about 90% by weight of the surfactant system, on a dry matter basis, of a primary anionic surfactant; ii. from about 0% to about 65% by weight of the surfactant system on a dry matter basis of a co-surfactant; Including, The article of any of the preceding aspects, wherein the surfactant system is substantially free of sulfate-based surfactants. The article of any of the preceding features, wherein the primary anionic surfactant comprises a glutamate surfactant selected from sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, TEA-cocoyl glutamate, or a combination thereof, or an alaninate surfactant selected from cocoyl alanine sodium salt, lauroyl alanine sodium salt, N-dodecanoyl-l-alanine sodium salt, or a combination thereof. The article of any of the preceding features, wherein the polymeric structurant is selected from carboxymethyl cellulose, starch, polyvinyl alcohol, and combinations thereof. The article of any of the preceding features, wherein the fibrous elements are formed by a homogeneous mixture comprising the polymeric structuring agent, the cationic polymer, the surfactant, and the salt, including the inorganic salt and the organic salt. The article of any of the preceding features, wherein the cationic polymer is selected from polyquaternium-6, polyquaternium-7, polyquaternium-10, cationic guar, and combinations thereof. An article according to any of the preceding characteristics having a hand melt value of less than 15 strokes according to the Hand Melt Test Method. [Example]

[0245] The following are non-limiting examples of shampoo compositions described herein. It will be understood that other modifications of the present invention within the skill of those skilled in the art can be made without departing from the spirit and scope of the present invention.

[0246] All parts, percentages, and ratios herein are by weight unless otherwise specified. Some components may be supplied as dilute solutions from the supplier. All amounts stated represent the weight percent of the material added unless otherwise specified.

[0247] [Table 1]

[0248] The dissolvable solid articles of Examples 1 and 2 are examples of the present invention, and the dissolvable solid articles of Comparative Examples i to iv are comparative examples of the present invention. These examples of the present invention provide dissolvable solid fibrous shampoo articles that have adequate strength during manufacturing but do not slow down the dissolution of the structure during use, compared to the comparative examples.

[0249] [Table 2]

[0250] Fiber spinnability The mechanical strength during the manufacture of a dissolvable solid fibrous structure is evaluated by fiber spinnability when forming a fibrous element. The dissolvable solid fibrous structure is formed by a plurality of fibrous elements. The fiber spinnability in Table 1 was determined by spinning a fibrous element-forming composition containing the components listed above at about 40% total solids (the remainder being water) according to the method for making fibrous elements and articles described herein. The concentrations of the components in such fibrous element-forming compositions are adjusted so that the components have the concentrations defined above in the dissolvable solid fibrous structure.

[0251] Good: A continuous filament could be formed without breakage and / or shrinkage, and the continuous filament could be collected on the belt.

[0252] Acceptable: No continuous filaments are formed and some filaments break before being laid on the belt. This may cause some problems in producing an article with the expected physical properties / performance and / or may cause some problems later in the manufacturing process.

[0253] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

[0254] All documents cited herein, including any cross-referenced or related patents or patent applications, and any patent applications or patents to which this application claims priority or benefit, are incorporated herein by reference in their entirety, unless expressly stated to the contrary. The citation of any document shall not be deemed to be prior art to any invention disclosed or claimed herein, or to teach, suggest, or disclose any such invention, either alone or in combination with any other reference or references. Furthermore, to the extent that 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 assigned to that term in this document shall govern.

[0255] While particular embodiments of the present invention have been illustrated and described, it would be obvious 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. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. 1. A dissolvable solid fibrous shampoo article comprising a plurality of fibrous elements, a. 1% to 50% by weight on a dry article basis of one or more polymeric structuring agents; b. 0.1% to 5% by weight on a dry matter basis of one or more cationic polymers; c. 20% to 70% by weight on a dry matter basis of a surfactant system; d. 5.5% to 20% by weight on a dry matter basis of at least two salts including i. an inorganic salt, and ii. 1% to 18% by weight on a dry matter basis of an organic salt; Including, the composition comprises 1.2% to 4.9% by weight of said inorganic salt on a dry matter basis; The plurality of fibrous elements are entangled or otherwise associated with one another to form a fibrous article.

2. 10. The article of claim 1, comprising from 7% to 18% by weight of said at least two salts on a dry article basis.

3. 3. The article of claim 2, comprising from 8% to 16% by weight of said at least two salts on a dry article basis.

4. The article of claim 1 , wherein the salt comprises from 2% to 16% by weight of an organic salt on a dry article basis.

5. The article of claim 4, wherein the salt comprises from 3% to 14% by weight of an organic salt on a dry article basis.

6. 6. The article of claim 5, wherein the salt comprises from 5.2% to 14% by weight of organic salt on a dry article basis.

7. The article of claim 1 , wherein the salt comprises from 1.5% to 4.8% by weight of inorganic salt on a dry article basis.

8. The article of claim 1 , wherein the organic salt is a salt of an organic acid.

9. The article of claim 8, wherein the organic acid has an average molecular weight of 80 to 400 Daltons.

10. 10. The article of claim 9, wherein the organic acid has an average molecular weight of 80 to 200 Daltons.

11. The article of claim 10, wherein the organic acid has an average molecular weight of 90 to 150 Daltons.

12. 9. The article of claim 8, wherein the organic acid is selected from the group consisting of lactic acid, citric acid, oxalic acid, malonic acid, tartronic acid, fumaric acid, maleic acid, malic acid, and tartaric acid, and combinations thereof.

13. The article of claim 12 , wherein the organic acid is lactic acid.

14. The surfactant system comprises: i. 35% to 90% by weight of the surfactant system on a dry matter basis of a primary anionic surfactant; ii. 10% to 65% by weight of the surfactant system on a dry matter basis of a co-surfactant; Including, The article of claim 1 , wherein the surfactant system is substantially free of sulfate-based surfactants.

15. 15. The article of claim 14, wherein the primary anionic surfactant comprises a glutamate surfactant selected from sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, dipotassium cocoyl glutamate, ammonium cocoyl glutamate, diammonium cocoyl glutamate, TEA-cocoyl glutamate, or a combination thereof, or an alaninate surfactant selected from cocoyl alanine sodium salt, lauroyl alanine sodium salt, N-dodecanoyl-1-alanine sodium salt, or a combination thereof.

16. The article of claim 1 , wherein the one or more polymeric structuring agents are selected from carboxymethyl cellulose, starch, polyvinyl alcohol, and combinations thereof.

17. 10. The article of claim 1, wherein the fibrous elements are formed by a homogeneous mixture comprising the one or more polymeric structuring agents, the one or more cationic polymers, the surfactant system, and the salt.

18. 10. The article of claim 1, wherein the one or more cationic polymers are selected from polyquaternium-6, polyquaternium-7, polyquaternium-10, cationic guar, and combinations thereof.

19. 10. The article of claim 1 having a hand melt value of less than 15 strokes according to the Hand Melt Test Method.

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