Hydratable concentrated surfactant composition

Abstract

A hydratable concentrated surfactant composition comprising: a) a furan-based anionic sulphate free surfactant; b) an amphoteric and / or zwitterionic surfactant; c) a C6 -C14 acid or alcohol; and d) from 30 to 85% by weight water; wherein the furan-based anionic sulphate free surfactant comprises: a1) a head group comprising i) a furan ring ii) a sulphonate group directly attached to the furan ring b1) an amide containing linker group; and c1) a hydrophobic alkyl tail group having a carbon chain length of 8 to 18; wherein the furan-based anionic sulphate free surfactant has the structure of Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of 8 to 18, 18:1 and 18:2 where R groups of different chain lengths can be used in combination as a blend, preferably a blend of chain lengths of C12 and C14; and where X is a counterion, selected from organic and inorganic counterions; wherein the composition comprises a lamellar phase; and wherein the composition has a viscosity of from 25 to 15,000 cps, when measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear 25 rate of 4-15 s-1 and at a temperature of 25 ⁰C. The composition can be used as a concentrate in small volumes and diluted as used or can be diluted with water in refill packaging to ensure a reduction in plastic waste.

Description

[0001] HYDRATABLE CONCENTRATED SURFACTANT COMPOSITION

[0002] Field of the Invention

[0003] The present invention is directed to a hydratable concentrated surfactant composition. The composition comprises a lamellar phase, and unexpectedly, thickens and transforms to an isotropic phase upon dilution. The composition can be used as a concentrate in small volumes and diluted as used or can be diluted with water in refill packaging to ensure a reduction in plastic waste.

[0004] Background of the Invention

[0005] Liquid based cleansing compositions, such as shampoos and body washes, are common and enjoyed by many consumers. Such compositions typically have water as the predominant ingredient, and they are often sold in plastic bottles or tubes. The compositions are conventionally formulated to have a viscosity that is customary for consumer use and easy for evacuation from the package they are sold in.

[0006] It is often publicized that the world’s oceans will soon have more plastic than fish. Given environmental concerns and the desire for consumers and conscious companies to do more for the planet, there is a strong desire to use less plastic when selling products, including consumer products. In view of this, efforts have been made to sell product in concentrate form, and therefore, ship product that comprises less water. The difficulty with concentrates is consumers often do not like adding additional water to the concentrate and further work, like stirring, to convert the concentrate into an end usable product. As to the hydrated product, common complaints include that the product is not homogeneous after adding water and / or of undesirable viscosity.

[0007] It is of increasing interest to develop a concentrate that is easy to use and hydrate, results in a consumer product that is ready to use in under five (5) minutes and of very desirable characteristics, including viscosity. It is also desirable to develop a concentrate that is substantially free of sulfate and that is easy to use with a refill package to reduce plastic waste. This invention, therefore, is directed to a composition that comprises a C6-C14 acid, alcohol or both, a furan based sulphate free anionic surfactant and an amphoteric surfactant, zwitterionic surfactant or both. The composition comprises a lamellar phase, and unexpectedly, thickens and transforms to an isotropic phase upon dilution. The composition can be used as a concentrate and diluted as needed or can be diluted with water in refill packaging to ensure a reduction in plastic waste.

[0008] When there is sufficient surfactant to form micelles (concentrations above the critical micelle concentration or CMC), for example, spherical, cylindrical (rod-like or discoidal), spherocylindrical, or ellipsoidal micelles may form. As surfactant concentration increases, ordered liquid crystalline phases such as lamellar phase, hexagonal phase, cubic phase or L3 sponge phase may form. In general, the microstructure of most personal care products consist of either an isotropic dispersion including spherical micelles; and rod micelles; or an ordered liquid crystalline phase such as a lamellar or hexagonal phases or mixtures thereof. As noted above, micelles may be spherical or rod-like. Hexagonal phases consist of long cylindrical micelles arranged in a hexagonal lattice. Lamellar phases as used herein, means having bilayers of surfactant in arrangement where polar head groups align with water to shield fatty acid acyl chains from the water arranged as surfactant bilayers alternating with layers of water and / or solvent.

[0009] The lamellar phase (a liquid crystal phase) is predominantly formed by the surfactants a) and b) (some other micellar formations may be present). The lamellar phase is capable of transforming rapidly to an isotropic phase upon dilution to form an end product with desirable viscosity.

[0010] A variety of issues can typically arise when one surfactant is simply substituted for another. It would not be expected that simply replacing the primary anionic surfactants with another primary anionic surfactant would preserve all desirable properties of the hydratable concentrated surfactant composition of this invention. Furthermore, existing art of using sulfonate-based surfactants as hydratable concentrated surfactant compositions (WO2021148427A1) uses both a fatty acyl isethionate and a fatty acyl taurate as primary surfactant. In fact, comparator examples shown in table on page 19 made with only fatty acyl isethionate or fatty acyl taurate as the primary anionic do not preserve the desirable properties. If only fatty acyl taurate is used, then the concentrate is too viscous and forms a hexagonal liquid crystal phase and not a lamellar liquid crystal phase. Furthermore, the concentrate is very slow to dilute and once dissolved only has a viscosity of 15.3cps well below the desired target viscosity and phase separates. On the other hand, if fatty acyl isethionate is used as the only anionic surfactant the concentrate is found to also dilute slowly and again only hits a target viscosity of 517.6 cps, again well below target specification viscosity. It is thus surprising that a hydratable concentrated surfactant composition can be formulated using only one sulfonate-based surfactant, a fatty acyl furan sulfonate. Surprisingly such a formulation retains the desired concentrate viscosity, structure, and dilution thickens to the target viscosity.

[0011] In U.S. patent application publication 2019 / 031258 A1, rheofluidifying concentrated foaming compositions are described. In U.S. patent application publication 2018 / 098923 A1, personal care compositions substantially free of sulfated surfactants are described.

[0012] In U.S. patent application 2019 / 282480 A1, self-thickening cleansing compositions with N- acyl acidic amino acids or salts thereof and an amphoteric surfactant are described.

[0013] WO2020229158 A1 discloses a furan-based surfactant comprising a beta sulphonate head group, a furan and a C10-20 hydrophobic group which is either attached directly to the furan or by way of a linker.

[0014] WO2024115420A1 dislcoses home or personal care detergent compositions comprising: from 0.5 to 50 weight percent, preferably from 0.75 to 40 weight percent, more preferably from 1 to 30 weight percent of a furan-based surfactant having a defined structure.

[0015] Despite the prior art, there remains a need for improved hydratable concentrated surfactant compositions.

[0016] Definition of the Invention

[0017] In a first aspect of the invention there is provided a hydratable concentrated surfactant composition comprising: a) a furan-based anionic sulphate free surfactant; b) an amphoteric and / or zwitterionic surfactant; c) a Ce-Ci4acid or C6-C14 alcohol; and d) from 30 to 85% by weight water; wherein the furan-based anionic sulphate free surfactant comprises: a1) a head group comprising i) a furan ring ii) a sulphonate group directly attached to the furan ring; b1) an amide containing linker group; and c1) a hydrophobic alkyl tail group having a carbon chain length of 8 to 18; wherein the furan-based anionic sulphate free surfactant has the structure of Formula (I):

[0018] Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of 8 to 18, 18:1 and 18:2 where R groups of different chain lengths can be used in combination as a blend, preferably a blend of chain lengths of C12 and C14; and where X is a counterion, selected from organic and inorganic counterions; wherein the composition comprises a lamellar phase; and wherein the composition has a viscosity of from 25 to 15,000 cps, preferably from 25 to 12,500 cps, more preferably, from 250 to 10000 cps.

[0019] In a second aspect of the invention there is provided a method of preparing an end use composition, the method comprising the step of diluting a hydratable composition of the first aspect with water, at a composition to water weight ratio of from 1 :1 to 1 :10, preferably 1 :2 to 1 :7, more preferably 1:3 to 1:6.

[0020] In a third aspect of the invention there is provided an end use composition made by hydrating the hydratable concentrated surfactant composition of the first aspect, preferably at a composition to water weight ratio from 1 : 1 to 1 : 10.

[0021] The lamellar phase is predominantly formed by the surfactants a) and b) (some other micellar formations may be present). The lamellar phase is capable of transforming rapidly to an isotropic phase upon dilution to form an end product with desirable viscosity.

[0022] One way to determine the presence of a lamellar phase the inventive composition is to view the composition in a microscope fitted with cross-polarizers. The lamellar phase will have a distinct optical pattern known to those skilled in the art. The hydratable concentrated surfactant composition of the first aspect of the invention transforms from lamellar to isotropic form upon dilution.

[0023] The end use composition has a viscosity that is greater than the hydratable concentrated surfactant composition.

[0024] A use of the end use composition of the third aspect of the invention to treat hair and skin is envisaged.

[0025] As used herein, “compositions” with no qualifier is meant to mean the hydratable composition and end use composition of this invention. Hydratable, as used herein, means add and / or add and absorb water (i.e. , to dilute) even to a composition that has water such as a composition that is initially 30 to 85% by weight water.

[0026] The end use composition is one suitable to be wiped or washed off, and preferably, washed off with water. The end use composition is preferably a shampoo, make-up wash, facial wash, hand wash or liquid body wash, more preferably a shampoo or liquid body wash. In one embodiment, the end use composition is a shampoo composition. In still another embodiment, the end use composition is a liquid body wash.

[0027] In an embodiment of the invention, the end use composition can have a viscosity from 6,000 to 20,000 cps when a body wash and from 2,000 to 10,000 cps when a hand wash.

[0028] The hydratable composition and end use composition typically have a pH from 4.5 to 10, preferably from 5.5 to 7.

[0029] Viscosity, unless noted otherwise, is measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear rate of 4-15 s-1. Viscosity is measured at 25 °C. Increase in viscosity means the hydratable composition of the present invention will have a starting viscosity that is lower than the final viscosity after water is added and the resulting end use composition is made. The end use composition is made, for example by combining water and hydratable composition and mixing with moderate shear like stirring, preferably shaking, the same to produce the end use composition having a higher viscosity than the hydratable concentrate it is made from. In another embodiment, the hydratable composition may be applied directly to, for example, a consumer and when water and shear are applied (like, for example, shearing with the hand and water from a sink or shower) the desired end use composition may be made.

[0030] When using the concentrate composition of the present invention, the same is typically used (i.e., hydrated or diluted) in a concentrate to water ratio of 1 :1 to 1 :6, or from 1 :1.8 to 1 :5, or from 1 :2.5 to 1 :4 or from 1 :2 to 1 :3. The water used is often from about 5 to 55°C, or from 7 to 50°C, or from 12 to 50°C.

[0031] As used herein, “substantially free of sulfate” means less than 0.5 wt %, preferably less than 0.4 wt %, more preferably less than 0.3 wt %, even more preferably less than 0.2 wt %, and most preferably less than 0.1 wt % by weight of the end use composition, and “substantially free of oil” means less than 0.3% , more preferably less than 0.2 wt %, and most preferably less than 0.1 wt % by weight of the end use composition. The oil is not meant to include any oil from a fragrance. In the present invention, the hydratable composition should be formulated such that upon dilution, the desired component / ingredient levels in the end use composition are attained.

[0032] The term comprising is meant to encompass the terms consisting essentially of and consisting of. For the avoidance of doubt, and for illustration, the end use composition of this invention comprising surfactant, water and active is meant to include a composition consisting essentially of the same and a composition consisting of the same. All ranges defined are meant to include all ranges subsumed therein. Except in the operating comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts or ratios of materials or conditions and / or physical properties of materials and / or use are to be understood as modified by the word “about”.

[0033] Detailed Description

[0034] The furan-based anionic, sulphate-free surfactant for use in the compositions of the invention comprises: a) a head group comprising: i) a furan ring; and ii) a sulphonate group directly attached to the furan ring; b) an amide containing linker group; and c) a hydrophobic alkyl tail group having a carbon chain length of from 8 to 18; wherein the furan-based anionic sulphate free surfactant has the structure of Formula (I):

[0035] Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of 8 to 18, 18:1 and 18:2 where R groups of different chain lengths can be used in combination as a blend, preferably a blend of chain lengths of C12 and C14; and where X is a counterion, selected from organic and inorganic counterions.

[0036] The furan-based anionic sulphate free surfactant

[0037] The head group comprises: i) a furan ring; and ii) a sulphonate group, directly attached to the furan ring.

[0038] The sulphonate group is directly attached to the furan ring.

[0039] There is no chemical unit (group or moiety), for example a methylene group (CH2), between the sulphonate group and the furan ring.

[0040] The furan-based anionic sulphate free surfactant can be readily derived from bio-mass.

[0041] The amide linker group The linker group comprises an amide and a saturated hydrocarbon chain. The saturated hydrocarbon chain is preferably selected from an ethylene group and a methylene group, most preferably is a methylene group (CH2).

[0042] The hydrophobic alkyl tail

[0043] The hydrophobic alkyl tail is an alkyl chain comprising a carbon chain length of 6 to 18, preferably from 8 to 16 carbon chains, most preferably from 10 to 14.

[0044] The hydrophobic alkyl chain can be linear or branched, preferably linear.

[0045] The hydrophobic alkyl chain can be saturated or unsaturated, preferably saturated. Preferred unsaturated chain include C18: 1 , C18:2 and C18:3, most preferred C18:1.

[0046] Blends of chain lengths may also be used, for example a blend of C12 and C14, preferably in a wt:wt ratio of 2: 1.

[0047] The anionic sulphate free surfactant has a structure as defined in Formula (I):

[0048] Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of from 8 to 18, preferably from 8 to 16 carbon chains, most preferably from 10 to 14; and where X is a counterion, suitably selected from organic and inorganic counterions. The counterion may be a proton.

[0049] Preferred counterions include alkali metals, especially sodium and potassium, and ammonium and triethanolammonium cations.

[0050] The furan-based anionic sulphate free surfactant, is preferably present in an amount of from 2 to 30% by weight of the hydratable composition, more preferably from 5 to 25% by weight, and most preferably, from to 8 to 20% by weight of the hydratable composition, including all ranges subsumed therein.

[0051] Method of making furan-based sulphate free anionic surfactant

[0052] The furan-based sulphate free anionic surfactant of the present invention may be made by any suitable process. An example of a suitable process is as follows.

[0053] Amidation reaction: Furfurylamine (1 eq) and triethylamine (1.1 eq) were mixed in ethyl acetate (6 g / 100 ml) at 0 °C. The acyl chloride (1.05 eq) was then added dropwise. After complete addition, the mixture was heated to 70 °C and stirred for 16h. TLC (EtOAc:PE 2:1 , PM DA stain) showed a new spot with Rf= 0.5 and consumption of starting furfurylamine. Water was added to quench, the crude was filtered hot and the solid precipitate was washed with further hot ethyl acetate. The filtrate was evaporated to dryness, affording the corresponding furfurylamide as an off-white solid (82-99%). N-(furan-2-ylmethyl)dodecanamide. Using furfurylamine (15 g), dodecanoyl chloride (38.5 ml) and triethylamine (4.0 ml). Pale yellow solid, 99% yield.1H NMR (MeOD), 5 (ppm): 7.40, dd, 1 H, J = 0.8 and 1.8 Hz; 6.33-6.32, m, 1 H; 6.22, dd, 1 H, J = 0.8 and 3.1 Hz; 4.33, s, 2 H; 2.19, t, 2 H, J = 7.0 Hz; 1.61-1.58, m, 2 H; 1.31-1.28, m, 16 H; 0.90, t, 1 H, J = 6.7 Hz.

[0054] Sulfonation reaction: Furfurylamide (1 eq) was dissolved in acetonitrile (20 g / 100 ml) at 0 °C. Chlorosulfonic acid (3 eq) was then added dropwise. After complete addition, the reaction was warmed up to RT and stirred for 3h.1H NMR (MeOD) showed disappearance of the proton at 7.4 ppm, corresponding to C4-H in the furan ring, confirming substitution at this position. Water was carefully added, followed by NaOH (50% in water) until pH 8. Most of the solvent was removed in vacuo and the residue was resuspended in acetone. The solid precipitate was collected, washed with hot acetone, dried and subjected to soxhlet extraction in methanol for 48h. This solution was then treated with activated carbon at reflux for 3h. The filtrate was evaporated to dryness, affording the corresponding sulphonated product as a pale-yellow solid (62-76%). 5-(dodecanamidomethyl)furan-2-sulfonate. Using / V-(furan-2-ylmethyl)dodecanamide (40 g) and chlorosulfonic acid (24 ml). Off-white solid, 65% yield.1H NMR (DMSO-de), 5 (ppm): 8.28, t, 1 H, J = 5.6 Hz; 6.28, d, 1 H, J = 3.2 Hz; 6.08, d, 1 H, J = 3.2 Hz; 4.20, d, 2 H, J = 5.6 Hz; 2.09, t, 2 H, J = 7.2 Hz; 1.52-1.45, m, 2 H; 1.27-1.24, m, 16 H; 0.85, t, 1 H, J = 6.7 Hz.

[0055] The amphoteric and / or zwitterionic surfactant

[0056] As to the amphoteric and / or zwitterionic surfactant used in the hydratable composition, the same typically makes up from 2 to 45%, and preferably, from 5 to 35%, and most preferably, from 12 to 25% by weight of the hydratable composition, including all ranges subsumed therein.

[0057] The zwitterionic surfactants that may be employed in the present invention include at least one acid group. Such an acid group may be a carboxylic or a sulphonic acid group. They often include quaternary nitrogen, and therefore, can be quaternary amino acids. They should generally include an alkyl or alkenyl group of 7 to 18 carbon atoms generally comply with an overall structural formula:

[0058] R6-[-C(O)-NH(CH2)q-]r-N+-(R7-)(R8)A~B where R7is alkyl or alkenyl of 7 to 18 carbon atoms; R7and R8are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms; q is 2 to 4; r is 0 to 1 ; A is alkylene of 1 to 3 carbon atoms optionally substituted with hydroxyl, and B is --CO2- or --SO3--.

[0059] Suitable zwitterionic surfactants for use in the present invention and within the above general formula include simple betaines of formula:

[0060] R6-N+-(R7)(R8)CH2CO2- and amido betaines of formula:

[0061] R6-CONH(CH2)t-N+-(R7)(R8)CH2CO2-where t is 2 or 3.

[0062] In both formulae R6, R7and R8are as defined previously. R6may, in particular, be a mixture of Ci2and C14 alkyl groups derived from coconut oil so that at least half, preferably at least three quarters of the groups R6have 10 to 14 carbon atoms. R7and R8are preferably methyl.

[0063] A further possibility is that the zwitterionic surfactant is a sulphobetaine of formula: R6-N+-(R7)(R8)(CH2)3SO3- or

[0064] R6-CONH(CH2)U-N+-(R7)(R8)(CH2)3SO3- where u is 2 or 3, or variants of these in which -(C ^sSOs’ is replaced by -- CH2C(OH)(H)CH2SO3-.

[0065] In these formulae, R6, R7and R8are as previously defined.

[0066] Illustrative examples of the zwitterionic surfactants suitable for use include betaines like cocodimethyl carboxymethyl betaine, cocam idopropyl betaine and laurylamidopropyl betaine. An additional zwitterionic surfactant suitable for use includes cocam idopropyl sultaine. Such surfactants are made commercially available from suppliers like Stepan Company, and it is within the scope of the invention to employ mixtures of the aforementioned surfactants. In a preferred embodiment, the zwitterionic surfactant used in this invention is cocamidopropyl betaine.

[0067] Amphoteric surfactants suitable for use in the invention (which depending on pH can be zwitterionic) include sodium acyl amphoacetates, sodium acyl amphopropionates, disodium acyl amphodiacetates and disodium acyl amphodipropionates where the acyl (i.e., alkanoyl group) can comprise a C7-C18 alkyl portion. Illustrative examples of the amphoteric surfactants suitable for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate and mixtures thereof.

[0068] The C6-Ci4 acid and / or C6-C14 alcohol

[0069] To, for example, aid in hydratable composition structuring and hydration, structuring agent like Ce-C acid and / or C6-C14 alcohol (i.e., derivative thereof) can preferably be used and typically make up from 0.1 to 16%, and preferably, from 1.8 to 12%, and most preferably, from 3 to 8% by weight of the hydratable composition, including all ranges subsumed therein. The preferred structuring agent is myristic acid, lauric acid and any alcohol derivatives thereof. The structuring agent may be selected from the group consisting of C6-C14 fatty acid, C6-C14 fatty alcohol, C6-C14 fatty amide and mixtures thereof and may make up from 0.1 to 16%, and preferably, from 1.8 to 12%, and most preferably, from 3 to 8% by weight of the hydratable composition, including all ranges subsumed therein.

[0070] Water preferably makes up from 35 to 85% by weight of the hydratable composition, and most preferably, from 40 to 70% by weight water based on total weight of the hydratable composition, including all ranges subsumed therein. Additional anionic surfactant

[0071] The compositions of the invention may include an additional anionic surfactant which is preferably selected from an acyl isethionate, an acyl taurate, acyl glycinate, an acyl sarcosinate or a mixture thereof.

[0072] The hydratable concentrated surfactant composition preferably makes up from 40 to 85% by weight of the total anionic surfactant in the hydratable composition.

[0073] As to anionic surfactants suitable for use in the hydratable composition and end use composition of the present invention, the anionic surfactant used can include aliphatic sulfonates, such as a primary alkane (e.g., C8-C22) sulfonate, primary alkane (e.g., C8-C22) disulfonate, C8-C22 alkene sulfonate, C8-C22 hydroxyalkane sulfonate or alkyl glyceryl ether sulfonate (AGS); or aromatic sulfonates such as alkyl benzene sulfonate.

[0074] The anionic may also be an alkyl sulfate (e.g., C12-C18 alkyl sulfate) or alkyl ether sulfate (including alkyl glyceryl ether sulfates). Among the alkyl ether sulfates are those having the formula:

[0075] RO(CH2CH2O)nSO3M wherein R is an alkyl or alkenyl having 8 to 18 carbons, preferably 12 to 18 carbons, n has an average value of at least 1.0, preferably less than 5, and most preferably 1 to 4, and M is a solubilizing cation such as sodium, potassium, ammonium or substituted ammonium.

[0076] The anionic may also include alkyl sulfosuccinates (including mono- and dialkyl, e.g., C6- C22 sulfosuccinates); alkyl and acyl taurates (often methyl taurates), alkyl and acyl sarcosinates, sulfoacetates, C8-C22 alkyl phosphates and phosphonates, alkyl phosphate esters and alkoxyl alkyl phosphate esters, acyl lactates, C8-C22 monoalkyl succinates and maleates, sulphoacetates, alkyl glucosides and acyl isethionates, and the like.

[0077] Sulfosuccinates may be monoalkyl sulfosuccinates having the formula: R1O2CCH2CH(SO3M)CO2M; and amide-MEA sulfosuccinates of the formula: R1CONHCH2CH2O2CCH2CH(SO3M)CC>2M wherein R1ranges from C8-C22 alkyl.

[0078] Sarcosinates are generally indicated by the formula:

[0079] R2CON(CH3)CH2CC>2M, wherein R2ranges from C8-C20 alkyl.

[0080] Taurates are generally identified by formula:

[0081] R3CONR4CH2CH2SO3M wherein R3is a C8-C20 alkyl, R4is a C1-C4 alkyl.

[0082] M is a solubilizing cation as previously described.

[0083] The isethionates that may be used include Cs-Cis acyl isethionates (including those which have a substituted head group such as a C1-4 alkyl substitution, preferably methyl substitution). These esters are prepared by a reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 18 carbon atoms and an iodine value of less than 20. Often at least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.

[0084] The acyl isethionate used may be an alkoxylated isethionate such as is described in llardi et al., U.S. Pat. No. 5,393,466, entitled "Fatty Acid Esters of Polyalkoxylated isethonic acid; issued Feb. 28, 1995; hereby incorporated by reference. This compound has the general formula:

[0085] R5C-O(O)-C(X)H-C(Y)H-(OCH2-CH2)m-SO3M wherein R5is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons and M is a solubilizing cation as previously described.

[0086] In an embodiment of the invention, an anionic surfactant used is sodium lauroyl glycinate, sodium cocoyl glycinate, sodium lauroyl glutamate, sodium cocoyl glutamate, sodium lauroyl isethionate, sodium cocoyl isethionate, sodium methyl lauroyl taurate, sodium methyl cocoyl taurate or a mixture thereof. Such anionic surfactants are commercially available from suppliers like Galaxy Surfactants, Clariant, Sino Lion and Innospec. Sodium cocoyl isethionate, sodium methyl lauroyl taurate, sodium lauroyl glyconate, sodium methyl lauroyl isethionate or mixtures thereof are the preferred anionics suitable for use. Nonionic surfactants

[0087] Nonionic surfactants may optionally be used in the hydratable composition and end use composition of the present invention. When used, nonionic surfactants are typically used at levels as low as 0.5 wt % to 12 wt %, preferably 1 wt % to 10 wt %, more preferably 1.5 wt % to 8 wt %, even more preferably 2 wt % to 6 wt %, by weight of the end use composition. The nonionics which may be used include in particular the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic surfactant compounds are alkyl (C6-C22) phenols ethylene oxide condensates, the condensation products of aliphatic (Os-Cis) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine. Other nonionic surfactants include long chain tertiary amine oxides, long chain tertiary phosphine oxides, dialkyl sulphoxides, and the like.

[0088] In an embodiment of the invention, nonionic surfactants optionally used can include fatty acid / alcohol ethoxylates having the following structures a) HOCH2(CH2)S(CH2CH2O)VH or b) HOOC(CH2)c(CH2CH2O)d H; where s and v are each independently an integer up to18; and c and d are each independently an integer from 1 or greater. In an embodiment of the invention, s and v are each independently 6 to 18; c and d are each independently 1 to 30. Other options for nonionic surfactants include those having the formula HOOC(CH2)i- CH=CH--(CH2)k(CH2CH2O)z H, where i, k are each independently 5 to 15; and z is 5 to 50. In another embodiment of the invention, i and k are each independently 6 to 12; and z is 15 to 35.

[0089] The nonionic may also include a sugar amide, such as a polysaccharide amide. Specifically, the surfactant may be one of the lactobionamides described in U.S. Pat. No. 5,389,279 to Au et al., entitled "Compositions Comprising Nonionic Glycolipid Surfactants issued Feb. 14, 1995; which is hereby incorporated by reference or it may be one of the sugar amides described in U.S. Pat. No. 5,009,814 to Kelkenberg, titled "Use of N-Poly Hydroxyalkyl Fatty Acid Amides as Thickening Agents for Liquid Aqueous Surfactant Systems" issued Apr. 23, 1991 ; hereby incorporated into the subject application by reference. Cationic surfactants

[0090] In an embodiment of the invention, cationic surfactants may optionally be used in the hydratable composition and end use composition of the present invention.

[0091] One class of optional cationic surfactants includes heterocyclic ammonium salts such as cetyl or stearyl pyridinium chloride, alkyl amidoethyl pyrrylinodium methyl sulfate, and lapyrium chloride.

[0092] Tetra alkyl ammonium salts are another useful class of cationic surfactants suitable for optional use. Examples include cetyl or stearyl trimethyl ammonium chloride or bromide; hydrogenated palm or tallow trimethylammonium halides; behenyl trimethyl ammonium halides or methyl sulfates; decyl isononyl dimethyl ammonium halides; ditallow (or distearyl) dimethyl ammonium halides, and behenyl dimethyl ammonium chloride.

[0093] Still other types of cationic surfactants that may be used are the various ethoxylated quaternary amines and ester quats. Examples include PEG-5 stearyl ammonium lactate (e.g., Genamin KSL manufactured by Clariant), PEG-2 coco ammonium chloride, PEG-15 hydrogenated tallow ammonium chloride, PEG 15 stearyl ammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and strearyl amidopropyl dimethylamine lactate.

[0094] Even other useful cationic surfactants suitable for optional use include quaternized hydrolysates of silk, wheat, and keratin proteins, and it is within the scope of the invention to use mixtures of the aforementioned cationic surfactants.

[0095] If used, cationic surfactants will make up no more than 1 .0% by weight of the hydratable composition. When present, they typically make up from 0.01 to 0.7%, and more typically, from 0.1 to 0.5% by weight of the end use composition, including all ranges subsumed therein.

[0096] Salt

[0097] Inorganic electrolyte (salt) is an optional but often desired ingredient to aid in composition thickening. Typical salts may be used like NaCI, KCI, MgCh, CaCh, mixtures thereof or the like. Typically, the inorganic salt makes up from 0 to 15%, and preferably, from 1 to 12%, and most preferably, from 0.75 to 4.5% by weight of the hydratable composition, including all ranges subsumed therein.

[0098] Polymeric viscosity aids

[0099] Polymeric viscosity aids are an optional but often desired ingredient in the hydratable composition of the present invention. Preferred polymers are those generally classified as high molecular weight ethoxylated fatty acid esters. Illustrative examples include PEG 120 methyl glucose dioleate, PEG 18 glyceryloleate / cocoate, PEG 150 pentaerythritol tetrastearate, mixtures thereof or the like. The often preferred polymeric viscosity aid is PEG 150 pentaerythritol tetrastearate which is sold under the Versathix name by Croda. When used, such aids make up from 0.01 to 0.8%, and preferably, from 0.1 to 0.5%, and most preferably, from 0.15 to 0.3% by weight of the hydratable composition, including all ranges subsumed therein.

[0100] Optional skin benefit agents

[0101] The end use composition of the present invention may optionally comprise skin benefit ingredients added thereto such as emollients, vitamins and / or derivatives thereof, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, mixtures thereof or the like. The skin benefit ingredients (or agents) may be water or oil soluble. If used, oil soluble skin benefit agents typically make up to 1.5% by weight of the hydratable composition whereby water soluble skin benefit agents, when used, typically make up to 10% by weight of the hydratable composition of the present invention.

[0102] Suitable for use in this invention are limited only to the extent that they are capable of being topically applied, and suitable to dissolve in the hydratable composition and end use composition at the desired pH.

[0103] Illustrative examples of the benefit agents suitable to include in the water portion of the compositions are acids, like amino acids, such as arginine, valine or histidine. Additional water soluble benefit agents suitable for use include vitamin B2, niacinamide (vitamin B3), vitamin B6, vitamin C, mixtures thereof or the like. Water soluble derivatives of such vitamins may also be employed. For instance, vitamin C derivatives such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycoside may be used alone or in combination with each other. Other water soluble benefit agents suitable for use include 4-ethyl resorcinol, extracts like sage, aloe vera, green tea, grapeseed, thyme, chamomile, yarrow, cucumber, liquorice, rosemary extract or mixtures thereof. Water soluble sunscreens like ensulizole may also be used. Total amount of optional water soluble benefit agents (including mixtures) when present in the invention may range from 0.0 to 10%, preferably from 0.001 to 8%, and most preferably, from 0.01 to 6% by weight, based on total weight of the end use composition and including all ranges subsumed therein.

[0104] It is also within the scope of the present invention to optionally include oil (i.e., non-water) soluble benefit agents. Oil soluble actives or benefit agents are preferably solubilized in the surfactants used. The only limitation with respect to such oil soluble benefit agents are that the same are suitable to provide a benefit when topically applied. The composition has preferably less than 0.15% Petrolatum (petroleum jelly), more preferably is free from Petrolatum.

[0105] Illustrative examples of the types of oil soluble benefit agents that may optionally be used in the compositions of this invention include components like stearic acid, vitamins like Vitamin A, D, E and K (and their oil soluble derivatives), sunscreens like ethylhexylmethoxycinnamate, bis-ethyl hexyloxyphenol methoxyphenol triazine, 2- ethylhexyl-2-cyano-3,3-diphenyl-2-propanoic acid, drometrizole trisiloxane, 3,3,5-trimethyl cyclohexyl 2-hydroxybenzoate, 2-ethylhexyl-2-hydroxybenzoate or mixtures thereof.

[0106] Other optional oil soluble benefit agents suitable for use include resorcinols like 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol 4- isopropyl resorcinol or a mixture thereof. Also, 5-substituted resorcinols like 4-cyclohexyl- 5-methylbenzene-1,3-diol, 4-isopropyl-5-methylbenzene-1,3-diol, mixtures thereof or the like may be used. The 5-substituted resorcinols, and their synthesis are described in commonly assigned U.S. Published Patent Application No. 2016 / 0000669A1.

[0107] Even other oil soluble actives suitable for use include omega-3 fatty acids, omega-6 fatty acids, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol mixtures thereof or the like. In an embodiment of the invention, the optional oil soluble benefit agent used is a retinoic acid precursor. In one embodiment of the invention, the retinoic acid precursor is retinol, retinal, retinyl propionate, retinyl palmitate, retinyl acetate or a mixture thereof. Retinyl propionate, retinyl palmitate and mixtures thereof are typically preferred.

[0108] Still another retinoic acid precursor suitable for use is hydroxyanasatil retinoate made commercially available under the name Retextra® as supplied by Molecular Design International. The same may be used in a mixture with the oil soluble actives described herein.

[0109] When optional oil soluble active is used in the compositions of the invention, it typically makes up from 0.0 to 1.5%, and preferably, from 0.001 to 1.5%, and most preferably, from 0.05 to 1.2% by weight of the end use composition. In yet another embodiment, oil makes up from 0.1 to 0.5% by weight of the total weight of the end use composition, including all ranges subsumed therein.

[0110] Preservatives

[0111] Preservatives can desirably be incorporated into the hydratable concentrate and end use composition to protect against the growth of potentially harmful microorganisms.

[0112] Cosmetic chemists are familiar with appropriate preservatives and routinely choose them to satisfy the preservative challenge test and to provide product stability. Suitable traditional preservatives for use include hydantoin derivatives and propionate salts. Particularly preferred preservatives are iodopropynyl butyl carbamate, phenoxyethanol, 1,2-octanediol, hydroxyacetophenone, ethylhexylglycerine, hexylene glycol, methyl paraben, propyl paraben, imidazolidinyl urea, sodium dehydroacetate, dimethyl-dimethyl (DM DM) hydantoin and benzyl alcohol and mixtures thereof. Other preservatives suitable for use include sodium dehydroacetate, chlorophenesin and decylene glycol. The preservatives should be selected having regard for the use of the composition and possible incompatibilities between the preservatives and other ingredients in the emulsion. Preservatives are preferably employed in amounts ranging from 0.01% to 2.0% by weight of the total weight of the end use composition (up to 7% by weight of total hydratable composition), including all ranges subsumed therein. Also preferred is a preservative system with hydroxyacetophenone alone or in a mixture with other preservatives.

[0113] Thickening agents

[0114] Thickening agents are optionally suitable for use in the compositions of the present invention. Particularly useful are the polysaccharides. Examples include fibers, starches, natural / synthetic gums and cellulosics. Representative of the starches are chemically modified starches such as sodium hydroxypropyl starch phosphate and aluminum starch octenylsuccinate. Tapioca starch is often preferred, as is maltodextrin. Suitable gums include xanthan, sclerotium, pectin, karaya, arabic, agar, guar (including Acacia Senegal guar), carrageenan, alginate and combinations thereof. Suitable cellulosics include hydroxypropyl cellulose, hydroxypropyl methylcellulose, ethylcellulose, sodium carboxy methylcellulose (cellulose gum / carboxymethyl cellulose) and cellulose (e.g. cellulose microfibrils, cellulose nanocrystals or microcrystalline cellulose). Sources of cellulose microfibrils include secondary cell wall materials (e.g. wood pulp, cotton), bacterial cellulose, and primary cell wall materials. Preferably the source of primary cell wall material is selected from parenchymal tissue from fruits, roots, bulbs, tubers, seeds, leaves and combination thereof; more preferably is selected from citrus fruit, tomato fruit, peach fruit, pumpkin fruit, kiwi fruit, apple fruit, mango fruit, sugar beet, beet root, turnip, parsnip, maize, oat, wheat, peas and combinations thereof; and even more preferably is selected from citrus fruit, tomato fruit and combinations thereof. A most preferred source of primary cell wall material is parenchymal tissue from citrus fruit. Citrus fibers, such as those made available by Herbacel® as AQ Plus can also be used as source for cellulose microfibrils. The cellulose sources can be surface modified by any of the known methods including those described in Colloidal Polymer Science, Kalia et al., “Nanofibrillated cellulose: surface modification and potential applications” (2014), Vol 292, Pages 5-31. Synthetic polymers, in addition to polymeric viscosity aids, are yet another class of effective thickening agents that can optionally be used. This category includes crosslinked polyacrylates such as the Carbomers, polyacrylamides such as Sepigel® 305 and taurate copolymers such as Simulgel® EG and Aristoflex® AVC, the copolymers being identified by respective INCI nomenclature as Sodium Acrylate / Sodium Acryloyldimethyl Taurate and Acryloyl Dimethyltaurate / Vinyl Pyrrolidone Copolymer. Another preferred synthetic polymer suitable for thickening is an acrylate-based polymer made commercially available by Seppic and sold under the name Simulgel INS100. Calcium carbonate, fumed silica, and magnesium-aluminum-silicate may also be used.

[0115] The amounts of optional thickening agent, when used, may range from 0.001 to 5%, by weight of the compositions. Maltodextrin, xanthan gum, and carboxymethyl cellulose are the often preferred optional thickening agents. Optionally, a shampoo composition in accordance the invention may contain further ingredients, (non-limiting examples of which are described below) to enhance performance and / or consumer acceptability.

[0116] Cationic polymers are preferred ingredients in a shampoo composition for use in the invention for enhancing conditioning performance.

[0117] Suitable cationic polymers may be homopolymers which are cationically substituted or may be formed from two or more types of monomers. The weight average (Mw) molecular weight of the polymers will generally be between 100000 and 3 million daltons. The polymers will have cationic nitrogen containing groups such as quaternary ammonium or protonated amino groups, or a mixture thereof. If the molecular weight of the polymer is too low, then the conditioning effect is poor. If too high, then there may be problems of high extensional viscosity leading to stringiness of the composition when it is poured.

[0118] The cationic nitrogen-containing group will generally be present as a substituent on a fraction of the total monomer units of the cationic polymer. Thus when the polymer is not a homopolymer it can contain spacer non-cationic monomer units. Such polymers are described in the CTFA Cosmetic Ingredient Directory, 3rd edition. The ratio of the cationic to non-cationic monomer units is selected to give polymers having a cationic charge density in the required range, which is generally from 0.2 to 6 meq / g, preferably 0.2 to 3.0 meq / g. The cationic charge density of the polymer is suitably determined via the Kjeldahl method as described in the US Pharmacopoeia under chemical tests for nitrogen determination.

[0119] Suitable cationic polymers include, for example, copolymers of vinyl monomers having cationic amine or quaternary ammonium functionalities with water soluble spacer monomers such as (meth)acrylamide, alkyl and dialkyl (meth)acrylamides, alkyl (meth)acrylate, vinyl caprolactone and vinyl pyrrolidine. The alkyl and dialkyl substituted monomers preferably have C1-C7 alkyl groups, more preferably C1-3 alkyl groups. Other suitable spacers include vinyl esters, vinyl alcohol, maleic anhydride, propylene glycol and ethylene glycol. The cationic amines can be primary, secondary or tertiary amines, depending upon the particular species and the pH of the composition. In general, secondary and tertiary amines, especially tertiary, are preferred.

[0120] Amine substituted vinyl monomers and amines can be polymerised in the amine form and then converted to ammonium by quaternization.

[0121] The cationic polymers can comprise mixtures of monomer units derived from amine- and / or quaternary ammonium-substituted monomer and / or compatible spacer monomers.

[0122] Suitable (non-limiting examples of) cationic polymers include: cationic diallyl quaternary ammonium-containing polymers including, for example, dimethyldiallylammonium chloride homopolymer (PDADMAC) and copolymers of acrylamide and dimethyldiallylammonium chloride, referred to in the industry (CTFA) as Polyquaternium 6 and Polyquaternium 7, respectively; mineral acid salts of amino-alkyl esters of homo-and co-polymers of unsaturated carboxylic acids having from 3 to 5 carbon atoms, (as described in U.S. Patent 4,009,256); cationic polyacrylamides(as described in WO95 / 22311).

[0123] Other cationic polymers that can be used include cationic polysaccharide polymers, such as cationic cellulose derivatives, cationic starch derivatives, and cationic guar gum derivatives.

[0124] Cationic polysaccharide polymers suitable for use in compositions for use in the invention include monomers of the formula:

[0125] A-O-[R-N+(R1)(R2)(R3)X-], wherein: A is an anhydroglucose residual group, such as a starch or cellulose anhydroglucose residual. R is an alkylene, oxyalkylene, polyoxyalkylene, or hydroxyalkylene group, or combination thereof. R1, R2and R3independently represent alkyl, aryl, alkylaryl, arylalkyl, alkoxyalkyl, or alkoxyaryl groups, each group containing up to about 18 carbon atoms. The total number of carbon atoms for each cationic moiety (i.e. , the sum of carbon atoms in R1, R2and R3) is preferably about 20 or less, and X is an anionic counterion.

[0126] Another type of cationic cellulose includes the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 24. These materials are available from the Amerchol Corporation, for instance under the tradename Polymer LM-200.

[0127] Other suitable cationic polysaccharide polymers include quaternary nitrogen-containing cellulose ethers (e.g. as described in U.S. Patent 3,962,418), and copolymers of etherified cellulose and starch (e.g. as described in U.S. Patent 3,958,581). Examples of such materials include the polymer LR and JR series from Dow, generally referred to in the industry (CTFA) as Polyquaternium 10.

[0128] A particularly suitable type of cationic polysaccharide polymer that can be used is a cationic guar gum derivative, such as guar hydroxypropyltrimethylammonium chloride (commercially available from Rhodia in their JAGUAR trademark series). Examples of such materials are JAGUAR C13S, JAGUAR C14 and JAGUAR C17.

[0129] Mixtures of any of the above cationic polymers may be used.

[0130] Cationic polymer will generally be present in a shampoo composition for use in the invention at levels of from 0.01 to 5%, preferably from 0.02 to 1%, more preferably from 0.05 to 0.8% by total weight of cationic polymer based on the total weight of the composition.

[0131] Silicone

[0132] The compositions of the invention can contain emulsified droplets of a silicone conditioning agent, which is preferably not hydrophobically modified.

[0133] Suitable silicones include polydimethylsiloxanes which have the CTFA designation dimethicone. Also suitable for use compositions of the invention are polydimethyl siloxanes having hydroxyl end groups, which have the CTFA designation dimethiconol. Preferably, the silicone is selected from the group consisting of dimethicone, dimethiconol, amodimethicone and mixtures thereof. Also preferred are blends of amino-functionalised silicones with dimethicones.

[0134] The internal phase viscosity of the emulsified silicone itself (not the emulsion or the final hair conditioning composition) is typically at least 10,000 cst at 25 °C the viscosity of the silicone itself is preferably at least 60,000 cst, most preferably at least 500,000 cst, ideally at least 1,000,000 cst. Preferably the viscosity does not exceed 109cst for ease of formulation.

[0135] Emulsified silicones for use in the compositions of the invention will typically have a D90 silicone droplet size in the composition of less than 30, preferably less than 20, more preferably less than 10 micron, ideally from 0.01 to 1 micron. Silicone emulsions having an average silicone droplet size (D50) of 0.15 micron are generally termed microemulsions.

[0136] Silicone particle size may be measured by means of a laser light scattering technique, for example using a 2600D Particle Sizer from Malvern Instruments.

[0137] Examples of suitable pre-formed emulsions include Xiameter MEM 1785 and microemulsion DC2-1865 available from Dow Corning. These are emulsions / microemulsions of dimethiconol. Cross-linked silicone gums are also available in a preemulsified form, which is advantageous for ease of formulation.

[0138] A further preferred class of silicones for inclusion in compositions of the invention are amino functional silicones. By "amino functional silicone" is meant a silicone containing at least one primary, secondary or tertiary amine group, or a quaternary ammonium group. Examples of suitable amino functional silicones include: polysiloxanes having the CTFA designation "amodimethicone". A preferred amodimethicone is available from Dow Corning as DC 7134.

[0139] Specific examples of amino functional silicones suitable for use in the invention are the aminosilicone oils DC2-8220, DC2-8166 and DC2-8566 (all ex Dow Corning).

[0140] Suitable quaternary silicone polymers are described in EP-A-0 530 974. A preferred quaternary silicone polymer is K3474, ex Goldschmidt. Also suitable are emulsions of amino functional silicone oils with non ionic and / or cationic surfactant.

[0141] Pre-formed emulsions of amino functional silicone are also available from suppliers of silicone oils such as Dow Corning and General Electric. Specific examples include DC939 Cationic Emulsion and the non-ionic emulsions DC2-7224, DC2-8467, DC2-8177 and DC2-8154 (all ex Dow Corning).

[0142] The total amount of silicone is preferably from 0.1 wt % to 10 wt % of the total composition more preferably from 0.1 wt % to 5 wt %, most preferably 0.25 wt % to 3 wt % is a suitable level.

[0143] The compositions of the present invention may include an appearance modifier to improve visual appearance and / or consumer appeal of the product. Most preferably the appearance modifier is a pearlescer selected from mica, titanium dioxide, titanium dioxide coated mica, ethylene glycol distearate (INCI glycol distearate) and mixtures thereof.

[0144] Further Optional ingredients

[0145] Fragrances, fixatives, chelators (like EDTA) and exfoliants may optionally be included in the compositions of the present invention. Each of these substances may range from about 0.03 to about 5%, preferably between 0.1 and 3% by weight of the total weight of the end use composition, including all ranges subsumed therein. To the extent the exfoliants are used, those selected should be of small enough particle size so that they do not impede the performance of any packaging used to dispense the compositions of this invention.

[0146] Conventional emulsifiers having an HLB of greater than 8 may optionally be used. Illustrative examples include Tween, 40, 60, 80, polysorbate 20 and mixtures thereof. Typically, emulsifiers for water continuous systems make up from 0.3 to 2.5% by weight of the end use composition.

[0147] Conventional humectants may optionally be employed as additives in the present invention to assist in moisturizing skin when such emulsions are topically applied. These are generally polyhydric alcohol type materials. Typical polyhydric alcohols include glycerol (i.e., glycerine or glycerin), propylene glycol, dipropylene glycol, polypropylene glycol (e.g., PPG-9), polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1 ,3-butylene glycol, isoprene glycol, 1,2,6-hexanetriol, ethoxylated glycerol, propoxylated glycerol and mixtures thereof. Most preferred is glycerin, propylene glycol or a mixture thereof. The amount of humectant employed may range anywhere from 0.0 to 35% by weight of the total weight of the compositions. Often, humectant makes up from 0.0 to 20%, and preferably, from 0.001 to 15% by weight (most preferably, from 2 to 12% by weight) of the total weight of the end use composition.

[0148] Methods of preparation

[0149] When making hydratable composition of the present invention, the desired ingredients may be mixed with conventional apparatus under moderate shear and atmospheric conditions, with temperature being from 35 to 80°C. Water is added to the hydratable composition to produce the end use composition. Moderate shear such as shaking (or stirring) in a container will yield the end use composition in less than 5 minutes, preferably in less than 3 minutes, and most preferably, in less than 2 minutes. In an embodiment of the invention, end use composition is made in less than 1 minute, even preferably, less than 30 seconds.

[0150] Accordingly, the present invention relates in a further aspect to a method to prepare an end use composition, the method comprising the step of diluting a hydratable composition of the present invention with water. Preferably, the composition is diluted at a composition to water weight ratio from 1:1 to 1:10. The hydratable concentrated surfactant composition has a viscosity from 25 to 10,000 cps and upon dilution the viscosity increases resulting in an end use composition having a viscosity from 1,000 to 20,000 cps, The viscosity is measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear rate of 4-15 s-1 and at a temperature of 25 °C. Preferred aspects of the end use composition have been described above.

[0151] Packaging

[0152] The packaging for the compositions typically is not limited as long as hydratable composition can be hydrated and end use composition can be made upon the addition of water. In an embodiment on the invention, the hydratable composition is sold in a pouch or cartridge that is associated with and inserted in a bottle or canister. The bottle or canister is one which is filled with water and allows for the release of the hydratable composition into the same for mixing with water. Typically, the bottle or canister has a cap with a pump that opens the sachet or canister to release the hydratable composition into the water to make end use composition. Such a hydratable composition unexpectedly yields an end use composition, such as a body wash, with desirable characteristics appreciated by consumers. The packaging allows for infinite numbers of refilling to invariably reduce plastic waste in the environment.

[0153] The hydratable concentrated composition is preferably packaged in a refill packaging. Preferably, the hydratable concentrated composition is used as a refill-composition.

[0154] The Example provided is to facilitate an understanding of the invention. It is not intended to limit the scope of the claims.

[0155] Example

[0156] In these examples, the “furan sulfonate” was made according to the method given herein above, under the heading “Method of making furan-based sulphate free anionic surfactant”. The resulting furan sulfonate surfactant had a 2:1 blend of C12 and C14 tails.

[0157] The following acronyms apply:

[0158] SMLT = sodium methyl lauroyl taurate

[0159] SLI = sodium lauroyl isethionate

[0160] CAPB = cocam idopropyl betaine

[0161] SLES = sodium lauryl ether sulphate AOS = alpha olefin sulphonate LHS = lauryl hydroxysultaine

[0162] All compositions represented in the Table below were made by conventional means, and therefore, by mixing ingredients with moderate shear under atmospheric conditions at a temperature from about 35 to 75°C.

[0163] For the avoidance of doubt, “Concentrate Viscosity” means the viscosity of hydratable composition and “Dilute Viscosity” means the viscosity of the end use wash composition made, both in centipoise (cps). Water and hydratable composition were combined (using 1 part concentrate to 3 parts water) in a vessel and were agitated with mild shaking. In less than one (1) minute, desired wash composition was unexpectedly obtained.

[0164] Table 1 : Compositions, concentrate viscosities and dilute viscosities of Inventive 1, Comparative 2 and Comparative 3. comprising a 2:1 blend of C12 and C14 tails

[0165] Composition 1 is a lamellar composition.

[0166] It will be seen that Comparative composition 2 exhibits a concentrate viscosity that is too high and does not form a lamellar phase. Additionally, the dilute viscosity is too low.

[0167] Comparative composition 3 also produces a dilute viscosity that is too low.

Claims

1. CLAIMS1. A hydratable concentrated surfactant composition comprising: a) a furan-based anionic sulphate free surfactant ; b) an amphoteric and / or zwitterionic surfactant; c) a Ce-Ci4acid or alcohol; and d) from 30 to 85% by weight water; wherein the furan-based anionic sulphate free surfactant comprises: a1) a head group comprising i) a furan ring ii) a sulphonate group directly attached to the furan ring b1) an amide containing linker group; and c1) a hydrophobic alkyl tail group having a carbon chain length of 8 to 18 wherein the furan-based anionic sulphate free surfactant has the structure of Formula (I):Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of 8 to 18, 18:1 and 18:2 where R groups of different chain lengths can be used in combination as a blend, preferably a blend of chain lengths of C12 and C14 and X is a counterion, selected from organic and inorganic counterions; wherein the composition comprises a lamellar phase; and wherein the composition has a viscosity of from 25 to 15,000 cps, when measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear rate of 4-15 s'1and at a temperature of 25 °C.

2. The hydratable concentrated surfactant composition according to any one of the preceding claims, which further comprises an additional anionic surfactant.

3. The hydratable concentrated surfactant composition of claim 2 wherein the additional anionic surfactant is selected from an acyl isethionate, an acyl taurate, acyl glycinate, an acyl sarcosinate or a mixture thereof.

4. The hydratable concentrated surfactant composition according to any of claims 2 to 3, wherein the additional anionic surfactant makes up from 40 to 85% by weight of the total anionic surfactant in the hydratable composition.

5. The hydratable concentrated surfactant composition according to any one of the preceding claims, wherein the zwitterionic surfactant or amphoteric surfactant is selected from alkyl betaines, alkyl amidopropyl betaines, alkyl hydroxysultaines, alkyl amidopropyl hydroxy sultaines, and mixtures thereof.

6. The hydratable concentrated surfactant composition according to any one of the preceding claims, wherein the Ce-C^ acid is lauric acid.

7. The hydratable concentrated surfactant composition as claimed in any preceding claim, wherein the total amount of furan-based anionic sulphate free surfactant and co-surfactant is from 2 to 30% by weight of the hydratable composition, more preferably from 5 to 25% by weight, and most preferably, from to 8 to 20% by weight of the hydratable composition.

8. The hydratable concentrated surfactant composition as claimed in any preceding claim, wherein the amide linker group of the furan-based anionic sulphate free surfactant comprises an amide and a saturated hydrocarbon chain.

9. The hydratable concentrated surfactant composition as claimed in any preceding claim wherein the furan-based anionic sulphate free surfactant has a saturated hydrocarbon chain that is a methylene group.

10. The hydratable concentrated surfactant composition as claimed in any preceding claim wherein the furan-based anionic sulphate free surfactant has an alkyl chain comprising a carbon chain length of 8 to 18, preferably from 8 to 16 carbon chains, most preferably from 10 to 14.

11. The hydratable concentrated surfactant composition according to any one of the preceding claims, wherein the composition is packaged in a refill package.

12. A method to prepare an end use composition, the method comprising the step of diluting a hydratable composition according to any one of claims 1 to 11 with water, at a composition to water weight ratio from 1 :1 to 1 :10.

13. The end use composition prepared by claim 12, wherein the end use composition is isotropic, preferably, wherein the end use composition transformed into isotropic form upon hydration of a lamellar concentrated surfactant composition.

14. The end use composition according to claim 12, wherein the viscosity of the end use composition is from 1 ,000 to 25,000, when measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear rate of 4-15 s'1and at a temperature of 25 °C.

15. A method of cleaning a surface comprising applying to the surface an end use composition as defined in any one of claims 13 to 14.

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