Aqueous compostions comprising biodegradable carboxymethyl polysaccharide, process for preparing the same and applications thereof

Abstract

Provided herein is an aqueous composition comprising a) biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch, b) at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) water. Further provided are process for preparing the said aqueous compositions comprising biodegradable carboxymethyl polysaccharide and applications of the said aqueous composition in personal care.

Description

AQUEOUS COMPOSTIONS COMPRISING BIODEGRADABLE CARBOXYMETHYL POLYSACCHARIDE, PROCESS FOR PREPARING THE SAME AND APPLICATIONS THEREOFFIELD OF THE INVENTION

[0001] The present disclosure relates to an aqueous compositions comprising carboxymethyl polysaccharide, process for preparing the same and applications thereof.BACKGROUND OF THE INVENTION

[0002] Conventionally, personal care products are used for improved moisturization, absorption, feel good factor or enhanced appearance. It is also desired that these products should not be sticky in nature, resist to varied temperatures, provide varying degrees of emolliency, and retain moisture. Further, care products should exhibit good rheology i.e. flow in the right way, be easily picked up, or rubbed onto the skin. Many natural and synthetic polymers have been used to improve rheology in personal care products. Viscosity and the degree of substitution (DS) of polymers in solutions determine their functionality. More stable viscosity more the efficacy of the product. Polysaccharides such as Carboxymethyl cellulose (CMC) or carboxymethyl starch has wide range of molecular weights, viscosity grades, and are odorless, tasteless, and chemically stable. The physical properties of CMC, particularly viscosity and solubility, largely depend on the degree of substitution (the number of reactive carboxymethyl groups and nature of the substituent group). CMC functions as a stabilizer, protective colloid, bulking agent, and water - retention agent. The Cosmetic Ingredient Review (CIR) Expert Panel has reviewed the available CMC toxicological data and concluded that CMC is safe as a cosmetic ingredient.

[0003] PCT Application No. WO2022 / 216789 Al assigned to ISP Investments LLC., discloses aqueous personal care compositions comprising carboxymethyl cellulose (CMC) having an optimized degree of substitution.

[0004] US granted patent US10179824B2 assigned to Gelesis LLC., discloses crosslinked carboxymethylcellulose having high elastic modulus coupled with high absorbance capacity.

[0005] However, there exists a need in the art for an aqueous composition that effectively enhances the rheology and thickening behavior of carboxymethyl polysaccharide making it more selective for end use applications resulting in increased viscosity and prolonged suspension.SUMMARY OF THE INVENTION

[0006] The primary aspect of the present application is directed to an aqueous composition comprising a) 0.1 to 10 wt. % of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt. % of at least one electrolyte selected from citric acid, sodium citrate, succinic acid, and sodium succinate; and c) 10 to 90 wt. % of water.

[0007] Another aspect of the present application is to provide an aqueous suspension composition comprising a) 0.1 to 10 wt.% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid, and sodium succinate; and c) 10 to 90 wt.% of water.

[0008] Another aspect of the present application is to provide an aqueous emulsion composition comprising: 0.1 to 10 wt.% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid, and sodium succinate; and c) 10 to 90 wt.% of water.

[0009] Another aspect of the present application is to provide a process for preparing an aqueous composition, the process comprising: a) dispersing carboxymethyl polysaccharide powder in water; b) addition of electrolyte before or together with polysaccharide powder dispersion of step a), c) mixing the contents of a) and b) for 20 to 40 min at high speed, and d) obtaining the aqueous composition.

[0010] Another aspect of the present application is to provide an aqueous skin care composition comprising: aqueous skin care composition comprising: a) 0.1 to 10 wt.% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid, and sodium succinate; and c) 10 to 90 wt.% of water.BRIEF DESCRIPTION OF DRAWINGS

[0011] In addition to the cited advantages and objects of the disclosure, one or more descriptions of the disclosure briefly summarized can be added by reference to certain embodiments thereof which are illustrated in the appended drawings. These drawings form part of the specification. However, it is to be noted that the appended drawings illustrate preferred embodiments of the disclosure and therefore are not limiting in their scope.

[0012] Fig. 1 illustrates addition of sodium citrate and viscosity studies.

[0013] Fig. 2 illustrates co-addition of sodium citrate or post addition of calcium chloride.

[0014] Fig. 3 illustrates suspension capabilities - combination with sodium citrate or calcium chloride.

[0015] Fig. 4 illustrates suspension capabilities - combination with calcium chloride.

[0016] Fig. 5 illustrates suspension capabilities - combination with sodium citrate.

[0017] Fig. 6 illustrates emulsion capabilities - combo in a gel cream.

[0018] Fig. 7 illustrates gel cream with low oil content and viscosity.

[0019] Fig. 8 illustrates lamellar gel emulsion high wax content.

[0020] Fig. 9 illustrates lamellar gel emulsion low oil content.

[0021] Fig. 10 illustrates oil-in-water emulsion.

[0022] Fig. 11 illustrates oil-water sunscreen.

[0023] Fig. 12 illustrates effect of citrate buffer on Gel Viscosity

[0024] Fig. 13 illustrates effect of Electrolytes on Gel Viscosity

[0025] Fig. 14 illustrates effect of buffer concentration on polymer particle size and viscosity of the Gel

[0026] Fig. 15 illustrates comparison studies - viscosity stability vs activation

[0027] Fig. 16 illustrates Non-Ionic Emulsion

[0028] Fig. 17 illustrates Body Lotion

[0029] Fig. 18 illustrates Gel Cream

[0030] Fig. 19 illustrates Simple Gel Cream

[0031] Fig. 20 illustrates effect of buffer on carboxymethyl polysaccharideDETAILED DESCRIPTION OF THE INVENTION

[0032] The technical solutions of the present disclosure will be described clearly and better understood in combination with specific embodiments below, but those skilled in the art will understand that embodiments described below are part of embodiments of the present disclosure but not all of them and are only used for illustration of the present disclosure and should not be considered as limiting the scope of the disclosure. If any specific condition or process are not indicated in the examples, it is to be understood that the conditions are conventionally used by the manufacturer and is commercially available.

[0033] As utilized in accordance with the disclosure, the following terms, unless otherwise indicated, shall be understood to have the following meanings.

[0034] Unless otherwise defined herein, technical terms used in connection with the disclosed and / or claimed inventive concept(s) shall have the meanings that are commonly understood by those of ordinary skill in the art. Further, unless otherwise required by the context, singular terms shall include pluralities, and plural terms shall include the singular.

[0035] The singular forms "a," "an," and "the" include plural forms unless the context clearly dictates otherwise specified or clearly implied to the contrary by the context in which the reference is made. The term "Comprising" and "Comprises of’ includes the more restrictive claims such as "Consisting essentially of’ and "Consisting of’.

[0036] For purposes of the following detailed description, other than in any operating examples, or where otherwise indicated, numbers that express, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". The numerical parameters set forth in the specification and attached claims are approximations that may vary depending upon the desired properties to be obtained in carrying out the invention.

[0037] All percentages, parts, proportions, and ratios as used herein, are by weight of the total composition, unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore; do not include solvents or by-products that may be included in commercially available materials, unless otherwise specified.

[0038] All publications, articles, papers, patents, patent publications, and other references cited herein are hereby incorporated herein in their entirety for all purposes to the extent consistent with the disclosure herein.

[0039] As used herein, the term "at least one" will be understood to include one as well as any quantity more than one, including but not limited to, 1, 2, 3, 4, 5, 10, 15, 20, 30, 40, 50, 100, etc. The term "at least one" may extend up to 100 or 1000 or more depending on the term to which it is attached. In addition, the quantities of 100 / 1000 are not to be considered limiting as lower or higher limits may also produce satisfactory results.

[0040] As used herein, the terms "comprising" (and any form of comprising, such as "comprise" and "comprises"), "having" (and any form of having, such as "have" and "has"), "including" (and any form of including, such as "includes" and "include") or "containing" (and any form of containing, such as "contains" and "contain") are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0041] As used herein, the term “carb oxy methyl cellulose” or “CMC” refers to both commercially available CMC products under the tradename “Blanose”, Aquaion, and in-house manufactured products.

[0042] As used herein, the term “CM Starch” refers to Carboxymethyl Starch and is used interchangeably throughout the specification. Carboxymethyl starch is linear as sold by roquette under the trade name of Beaute ST 118 or crosslinked commercial CM Starch.

[0043] As used herein, the term “cosmetically acceptable” refers to molecular entities regarded as safe, approved by regulatory body, listed in pharmacopoeia for use in topical contact with tissues (e.g., the skin) without undue toxicity, incompatibility, instability, irritation, allergic response, or the like. This term is not intended to limit the composition it describes as for use solely as a cosmetic (e.g., the composition may be used as a pharmaceutical).

[0044] As used herein, the term “degree of substitution (DS)” or “substituted degree” or “substitution degree” generally refers to carboxymethyl cellulose with the average number of carboxymethyl groups substituted per unit of anhydroglucose. Each anhydroglucose ([3- glucopyranose) unit has three reactive (hydroxyl) groups, so theoretically DS value can be in the range from zero (cellulose itself) to three (fully substituted cellulose). The position and DS weremeasured using NMR by the identification of protons and carbon shift of methyl groups in the anhydroglucose unit and anhydride groups.

[0045] As used herein, the term "polymer" refers to a compound comprising repeating structural units (monomers) connected by covalent chemical bonds. Polymers may be further derivatized, crosslinked, grafted or end-capped. Non-limiting examples of polymers include copolymers, terpolymers, tetra polymers, quaternary polymers, and homologues. The term "copolymer" refers to a polymer consisting essentially of two or more different types of monomers polymerized to obtain said copolymer.

[0046] As used herein, the term “personal care composition” and “cosmetics” refer to compositions intended for use on or in human body such as skin, hair, oral including those to alter the color and appearance of skin and hair.

[0047] As used herein, the term “starch” refers to any plant-based material including wheat, waxy wheat, com, waxy corn, high amylose com, oat, rice, tapioca, mung bean, sago, sweet potato, potato, waxy potato, pea, barley, triticale, sorghum, banana, bran, tapioca, millet and mixtures thereof.

[0048] As used herein, the term “viscosity of a solution” or “average viscosity” refers to measure of its resistance to gradual deformation by shear stress, which is due to intermolecular cohesive forces. These forces are affected by some factors such as concentration, temperature, or degree of substitution.

[0049] As used herein, the term ‘rheology’ refers to “the science or study of how things flow”, a requisite for personal care products.

[0050] In the context of the specification, present abbreviation for carboxymethyl cellulose (CMC) refers to CMC alone or with salts such as sodium carboxymethyl cellulose.

[0051] Consumers growing interest in sustainability is merging with their quest for wellbeing and care for the planet and society. Consumers look for safe, effective, recognized ingredients, complicated chemical-sounding names give consumers perception that they can do harm simplicity and consumer-friendly language on packaging is important and aligns with minimalism trend.

[0052] Synthetic rheology modifiers (such as carbomer) have traditionally been used to thicken and stabilize skin care emulsions efficiently with appealing aesthetics. Existing natural rheologymodifiers typically have very poor aesthetics, making it difficult to create the natural, sustainable formulations consumers want. Present inventors having expertise in sustainably sourced cellulosics, combined with their rheology modification experience, introduced a sustainable alternative.

[0053] All embodiments of the current specification are directed to an aqueous composition comprising: a) 0.1 to 10 wt.° / o of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) (i) 0.1 to 10 wt.° / o of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 wt.° / o of water.

[0054] Biodegradable polysaccharide used in this invention may include, for example, members selected from the group consisting of agar, alginic acid, carrageenan, carboxymethyl cellulose, carboxymethyl starch, cationic starch, dextran, furcellaran, gum arabic, gum karaya, gum tragacanth, guar gum, hydroxyethylcarboxymethyl cellulose, hyaluronic acid, locust bean gum, methyl cellulose, pectin, psyllium gum, starch, and xanthan.

[0055] Carboxymethyl cellulose (CMC) is a biodegradable, highly compatible anionic polymer obtained from cellulose (naturally sourced from cotton linters, wood pulp, or other cellulosic compounds) by substitution of at least a portion of the hydroxyl groups in cellulose molecule for carboxymethyl ether groups.R = H or CH2COOH Formula (I)

[0056] Carboxymethyl cellulose is commercially (CMC) obtained by alkalization reaction of cellulose with sodium mono chloroacetate and has degree of substitution (DS) in the range of 0.4 to 1.3. CMC is completely soluble at DS above 0.4 and hydro affinity of CMC increases with increasing DS, while this polymer is swellable but insoluble below 0.4. Present disclosure employs CMC having degree of substitution in the range of 0.5 to 0.7.Structure of Carboxymethyl Cellulose

[0057] Carboxymethyl cellulose (Bio Cellulose) used in the current specification in biodegradable, with more than 15% in 28 days, exposure time of 28 days as per OECD Test Guideline 301F method.

[0058] The carboxymethyl cellulose is present in a concentration range of from about 0.1 to about 10.0 wt.% of the total personal care composition. The natural polymer is present in a concentration range of from about 0.01 to about 10.0 wt.% of the total personal care composition. The care composition additionally comprises 0.01 to 10 wt.% of care additive and water.

[0059] In another non-limiting embodiment, the low substituted carboxymethyl cellulose is present in the form of solid particulate or powder, and a molecular weight in the range of from about 150,000 to about 3,000,000 Daltons.

[0060] Carboxymethyl starch (CM starch) is a water soluble polysaccharide widely used in numerous fields as binder, thickener, emulsifying agent, viscosity enhancing agent, moisture retaining agent, and fluidizing agent. Derived from starch is environmentally safe and vastly explored in food, cosmetics, pharmaceutical products. Carboxymethyl starch is biodegradable with 5% in 28 days exposure time of 28 days as per OECD Test Guideline 301F method.Structure of cross linked Carboxymethyl Starch

[0061] Carboxymethyl polysaccharides used in the present application shows many unique characteristics in that, it brings (i) efficient thickening and suspension such as effective thickening, suspension capabilities, emulsion stabilizer and enables clear formulations (ii) desirable skin feel and textures such as pleasant skin after-feel, improved aesthetics vs most common natural thickener, and (iii) formulation versatility such as electrolytes & minerals tolerant, effective across wide pH range (4-8), no neutralization required, cold processible, compatible with other nature- derived polymers and China IEC1C-CFDA listed (2015).

[0062] After numerous experimentations, the present inventors found out that carboxymethyl polysaccharide functionality can be enhanced when used in combination with electrolytes. Activating starch or cellulose increases its crystalline regions, makes more resistance to change and allows the formation of a 3-D network as shown below.

[0063] Computational modelling studies on activated carboxymethyl polysaccharides shows zero or linkage based on absence or presence of electrolyte. No linkage is observed between large polysaccharide molecules if no electrolyte or buffer is used as shown below.Computational Modelling - Buffer vs no Buffer

[0064] Based on molecular interactions, we can hypothesize that electrolytes such as salts of dicarboxylic and tricarboxylic acids are capable of forming interchain bridges between polymer chains. Such interaction allows for the formation of a 3D network throughout the gel structure that impacts viscosity and enhances suspension. As a results formulations containing these salts will have better heat stability. Molecular interactions of cellulose backbone with dicarboxylic acids is graphically presented below:

[0065] In another embodiment, the electrolytes can be selected from group consisting of quaternized polymers, and quaternary ammonium compounds. Specific examples of electrolytes include aluminum chloride, behenalkonium chloride, behentrimonium chloride, calcium chloride, citric acid, calcium sulphate, cassia hydroxypropyltrimonium chloride, cinnamidopropyl trimonium chloride, dicetyldimonium chloride, guar hydroxypropyltrimonium chloride, hydroxy ethyl cetearamidopropyl dimonium chloride, hydroxypropyl bi s-hydroxy ethyl dimonium chloride, magnesium sulphate, magnesium chloride, malic acid, myristamidopropyl PG-dimonium chloride phosphate; potassium borate, potassium chloride, sodium borate, sodium chloride, stearalkonium chloride, sodium citrate, sodium gluconate, sodium malate, sodium phosphate, sodium succinate, sodium tartarate, succinic acid, tartaric acid, trisodium ethylene diamine succinate, zinc chloride, zinc citrate, zinc gluconate, zinc glycine, and zinc sulfonate.

[0066] In another embodiment, the electrolytes are selected from citric acid, sodium citrate, succinic acid and sodium succinate. Effect if addition of sodium citrate and viscosity studies using carboxymethyl cellulose are shown in figures 1 and 2. Effects of electrolytes such as sodium citrate, calcium hydroxide, sodium hydroxide, lactic acid in different concentrations are provided in figures 12 and!3.

[0067] In another embodiment, the aqueous composition has an average viscosity range of from about 500 to about 300.000 cps in 1% aqueous solution as measured by Brookfield, spindle A, speed 5.

[0068] Addition of electrolytes to composition comprising carboxymethyl cellulose having D.S. in the range of 0.50 to 0.70 imparts 10% to 200% increase in viscosity and provides at least 20 % to 500 % longevity of suspension stability in end use formulations.

[0069] In another embodiment, the present carboxymethyl starch is crosslinked.

[0070] In another embodiment, the addition of buffer enhances the crystalline index of carboxymethyl polysaccharide (0.15) as opposed to 0 in the absence of buffer. The results are shown in figure 20. Final polysaccharide powder is crystalline in nature and is most suitable polymorphic form for formulations.

[0071] In another embodiment, the aqueous composition is stable for at least 2 weeks to 14 weeks at RT to 45°C. The composition is a suspension composition or an emulsion composition.

[0072] Suspension ability using carboxymethyl cellulose in the presence of sodium citate or calcium chloride are provided in figures 3, 4 and 5.

[0073] In another important embodiment, the current specification provides an aqueous suspension composition comprising: a) 0.1 to 10 wt.° / o of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.° / o of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 w7.% of water.

[0074] Accordingly, the suspension can be employed to suspend various encapsulates. These encapsulates are a series of small particles that contain an active ingredient, or core material, surrounded by a shell and are produced using complex coacervation process. These particulates are employed to suspend particles in aqueous solutions. They differ in capsule wall thickness, color, capsule size, and core material. These encapsulates enhance visual effect, delivers flavor, provides texture, sensory signals, isolates and protects ingredients, suspends sugar, salts, silica and other exfoliant agents. Preferred encapsulates are captivates GL and captivates HC encapsulates. Particulates can be selected from apricot seed powder, charcoal, jojoba wax, oil capsules,polylactic acid, perlite, pumice, pearls, pigments, sand, silica, sparkles, titanium dioxide, wax, and zinc oxide.

[0075] In another important embodiment, current specification provides an aqueous emulsion composition comprising: a) 0.1 to 10 .% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 wt.% of water.

[0076] Accordingly, the emulsion demonstrates at least 10 % to 500 % increase in viscosity and emulsion stability.

[0077] Accordingly, the emulsion composition can be a sprayable emulsion composition.

[0078] The aqueous emulsion or suspension composition can be a personal care composition, a home care composition, an industrial composition, a coating composition, an agricultural composition, or a pharmaceutical composition. The personal care composition is a hair care composition or a skin care composition.

[0079] In another embodiment the current aqueous composition can be formulated into a gel cream (with low oil content), a lamellar gel emulsion with high wax content, a lamellar gel emulsion with low oil content, an oil-in-water emulsion, or an oil-in-water sunscreen, Sunkissed tanning elixir gel, clay-full detox mask, Youth Collagen Drops, Vitafruit C-bright Essence, Just Clarify Serum, Pink Pepper Caviar, Ultra Repair 4D Cream, body lotion, and gel cream.

[0080] In another embodiment, the current specification is to provide additional ingredients selected from moisturizers, ionic emulsifiers, non-ionic emulsifiers, preservatives, pigments, emollients, preservatives, fragrances, fillers, screening agents, sequestering agents, essential oils, dyes, hydrophilic or lipophilic active agents, lipid vesicles, vitamin B compounds, vitamin E compounds, vitamin C compounds, vitamin D compounds, peptides, sugar amines, protease inhibitors, sunscreens, desquamation agents, chelators, skin lightening compounds, non-vitamin antioxidant radical scavengers, phytosterols, plant hormones, protease inhibitors, tyrosinase inhibitors, anti-inflammatory agents, topical anesthetics, anti-cellulite agents, sunless tanning agents, N-acyl amino acid compounds and derivatives and mixtures thereof.

[0081] Accordingly, the additional ingredients are selected from the group comprising acrylic acid, behenyl alcohol, butylene glycol, brassica glycerides, caprylyl glycol, cetyl hydroxy ethylcellulose, ethylhexyl palmitate, glyceryl dilaurate, glycerine, glyceryl acrylate, glyceryl stearate citrate, polyglyceryl-3 stearate, hydrogenated lecithin, glyceryl citrate / lactate / linoleate / oleate, combination of sodium benzoate and potassium sorbate in benzyl alcohol, hydroxyethylcellulose, isoamyl laurate, isocetyl stearoyl stearate, isopropyl myristate, isocetyl stearoyl stearate, isodecyl neopentanoate, Jasmin lily, maleated soybean oil glyceryl, octyl dodecanol esters (and) glycerin, myristyl myristate (and) myristyl laurate, octadecanoic acid, 12-[(l-oxooctadecyl)oxy]-, 2- octyldodecyl ester, octyl dodecyl stearate, orchid complex, pentylene glycol (100% Natural), phenoxyethanol and ethylhexylglycerin, phenoxyethanol, sorbic acid, glyceryl stearate (and) behenyl alcohol (and) palmitic acid (and) stearic Acid (and) lecithin (and) lauryl Alcohol (and) myristyl alcohol (and) cetyl alcohol, caprylic / capric triglyceride (and) cymbidium grandiflorum flower extract, refined shea butter, propanoic acid, 2-hydroxy-, hexadecyl ester, phenyl propanol (and) propanediol (and) caprylyl glycol (and) tocopherol phenoxyethanol (and) caprylyl glycol, penta stearate, sodium stearoyl lactylate, potassium cetyl phosphate, hexanedioic acid, bis(l- methylethyl) ester, benzoic acid, 2-phenylethyl ester, butyl methoxy dibenzoyl methane, ethylhexyl salicylate, isotrizinol, bis-Ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, palmitic acid, ethyl cellulose (and) diisopropyl adipate polycitronellol acetate, phenyl propanol (and) propanediol (and) caprylyl glycol (and) tocopherol, raspberry ketone.

[0082] Emulsion systems have two immiscible phases, wherein one phase is dispersed or suspended throughout the other phase. Key feature of a good emulsion is to keep the two phases remain immiscible and not to get separated into two distinct phases. Emulsifiers are used to slow down the separation process. Addition of emulsifiers helps solids to be dispersed in liquids or insoluble liquids with other liquids. These emulsifiers or emulsifying agents are surfactants and are well known in the art. Present disclosure employs anionic, amphoteric, and zwitterionic emulsifiers. Anionic emulsifiers can be selected from the group comprising ethoxylated alkyl sulphates not limiting to alkyl ethoxy carboxylates, alkyl glyceryl ether sulphonates, acyl sarcosinates, alkyl ethoxy sulphosuccinates, alpha-sulphonated fatty acids, their salts and / or esters, ethoxylated alkyl phosphate esters, ethoxylated alkyl glyceryl ether sulfonates, paraffin sulfonates and alkoxy amide sulfonates, alkyl sulphates, alkyl ether sulphates, alkaryl sulphonates, alkanoyl isethionates, alkyl succinates, alkyl sulphosuccinates, N-alkyl sarcosinates, alkyl ether phosphates,alkyl ether carboxylates, alpha-olefin sulphonates, salts of alkyl sulfates, salts of alkylbenzene sulfonates, salts of di alkyl sulfosuccinates, salts of alkyl phosphoric acids, salts of polyoxyethylene alkyl ether sulfates, glycerin monostearate, alkyl amine oxides, sorbitan monopalmitate, polyoxyethylene cetyl ether, polyoxyethylene stearic acid ester, polyoxyethylene sorbitan monolaurate and mixtures thereof. The alkyl and acyl groups generally contain from 6 to 22 carbon atoms and can be unsaturated. Nonionic emulsifiers can be selected from the group comprising alkyl glucosides, alkyl polyglycosides, polyhydroxy fatty acid amides, alkoxylated sugar esters and polyesters, fatty acid amides, condensation products of alkylene oxides and fatty acids, such as alkylene oxide esters of fatty acids and alkylene oxide diesters of fatty acids, condensation products of alkylene oxides and fatty alcohols, such as PEG 40 hydrogenated castor oil, PEG stearate, laureth, PEG laureth ester, PEG stearate ether, steareth 2, isoceteth-20 and oleth-20, condensation products of alkylene oxides and fatty acids and fatty alcohol, wherein the polyalkylene oxide portion is esterified on one end with a fatty acid and etherified on the other end with a fatty alcohol, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, glycerine fatty acid esters and saccharose fatty acid esters and Polysorbate. Amphoteric emulsifiers are selected from group comprising cocoamphocarboxy propionate, cocoamphocarboxy propionic acid, cocoamphoacetate, cocoamphodiacetate, sodium lauroamphoacetate, N-acylamidopropyl-N,N-dimethylammonio betaines and N-acylamidopropyl- N,N'-dimethyl-N'-2-hydroxypropylammonio betaines. Zwitterionic emulsifiers are selected from the group comprising alkyl betaines and amido betaines, sultaines, alkyl glycinates, alkyl carboxyglycinates, alkyl amphopropionates, alkylamphoglycintaes, alkyl amidopropyl hydroxysulfaines, acyl taurates, acyl glutamates and examples of cationic surfactants include ammonium halide compounds, including those having hydrophilic substituents. Examples of ammonium halide compounds are long-chain alkyl trimethyl ammonium chloride, long-chain alkyl benzyl dimethyl ammonium chloride, alkylamine hydrochlorides, alkylamine acetates and di(long-chain alkyl) dimethyl ammonium bromide. Alkyl and acyl groups have from 8 to 19 carbon atoms. Preferred emulsifiers include sunflower phospholipid based, polyethylene glycol (PEG) free vegetable based, lysophosphatidylcholines (LPC) derived from soybean dissolved in glycerin, cetearyl alcohol and cetearyl glucoside, and glyceryl stearate citrate & polyglyceryl-3 stearate & hydrogenated lecithin, polyglyceryl-3 methylglucose distearate, cetearyl alcohol (and) glycerylstearate (and) jojoba esters (and) helianthus annuus (Sunflower) seed wax (and) sodium stearoyl glutamate (and) water (and) poly lycerin-3, polyglyceryl-3 dicitrate / stearate, stearic acid (and) behenyl alcohol (and) glyceryl stearate (and) myristyl alcohol (and) lauryl alcohol (and) cetyl alcohol (and) palmitic acid (and) lecithin, glyceryl citrate / lactate / linoleate / oleate, polyglyceryl-6 stearate (and) polyglyceryl-6 behenate.

[0083] A perfume or fragrance obtained from natural or synthetic source can be employed in the present aqueous compositions. The fragrance may be used along with a suitable solvent, diluents or carrier. Fragrances may be added in any conventionally known method, for example, admixing to a composition or blending with other ingredients used to form a composition, in amounts which are found to be useful to increase or impart the desired scent characteristics to the disinfectant or cleaning compositions. Fragrances for the present application can be one or more selected from the following non-limiting group of compounds such as essential oils, absolutes, resinoids, resins, concretes, hydrocarbons, alcohols, aldehydes, ketones, ethers, acids, esters, acetals, ketals, nitriles, including saturated and unsaturated compounds and aliphatic, carboxylic and heterocyclic compounds.

[0084] Another important embodiment of the current specification is to provide various formulations involving the aqueous composition comprising carboxymethyl cellulose or carboxymethyl starch, electrolyte and water, the formulations selected from the group consisting of gel emulsion (high wax content), lamellar gel emulsion (low oil content), oil-in-water emulsion, and oil-in-water sunscreen.

[0085] Another important embodiment of the current specification is process for preparing an aqueous composition, the process comprising: a) dispersing carboxymethyl saccharide powder in water; b) addition of electrolyte before or together with powder of step a), c) mixing the contents of a) and b) for 20 to 40 min at high speed, and d) obtaining the aqueous composition.

[0086] Accordingly, the aqueous composition is tolerant to formulations containing electrolytes & minerals, compatible to ethanol containing formulations and compatible pH range of 4 to 8.

[0087] Accordingly, the aqueous composition is in the form of a smooth gel, cream, body lotion.

[0088] Another important embodiment of the current specification is to provide an aqueous skin care composition comprising: (A) 0.1 to 10 .% of aqueous composition a) 0.1 to 10 wt.% ofbiodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or(ii) carboxymethyl starch; b) 0.1 to 10 .% of at least one electrolyte selected from sodium citrate and sodium succinate; c) 10 to 90 wt.° / o of water; (B) 0.01 to 60 wt.% at least one skin care additive; and (C) water.

[0089] Accordingly, the skin care composition is an oil-in-water emulsion, a water-in-oil emulsion, a sprayable emulsion, or a suspension.

[0090] Accordingly, the skin care additive is selected from anti-inflammatory agents, desquamation agents, vitamin B compounds, vitamin E compounds, vitamin C compounds, vitamin D compounds, peptides, protease inhibitors, sugar amines, sunscreens, chelators, skin lightening compounds, non-vitamin antioxidant radical scavengers, phytosterols, plant hormones, protease inhibitors, tyrosinase inhibitors, topical anesthetics, anti-cellulite agents, sunless tanning agents, N-acyl amino acid compounds, preservatives, preservative boosters, glycerin, glycol, emulsifiers, surfactants, oils, esters, waxes, fragrances, essential oils, microbial protection agents, antifungals, keratolytic agents, alcohols, moisturizing agents, polymers, waterproofing agents, hair care polymers, pigments, dyes, silicas, kaolin, and powders, natural ingredients, polyesters, Fluoride, phosphates, peroxides their derivatives and mixtures thereof.

[0091] Therefore, the inventive aqueous composition obtained by combining biodegradable carboxymethyl polysaccharide with electrolytes results in the following properties or advantages:(i) obtaining the desired viscosity and stability to clear gels, making it most preferred choice for formulators of personal care products.(ii) delivers a stable and thick emulsion(iii) uses lower amounts of polymers(iv) balances texture appearance(v) preparing sustainable products using the present aqueous composition as more than 95% of all the ingredients used in the preparation of the aqueous composition are of natural originmaking the most preferred choice for formulators for preparing sustainable personal care products.

[0092] Further, certain aspects of the present application are illustrated in detail by way of the following examples. The examples are given herein for illustration of the application and are not intended to be limiting thereof.

[0093] EXAMPLES

[0094] EXAMPLE 1: COMBO IN A GEL CREAM (LOW OIL CONTENT)

[0095] A gel cream was prepared using carboxymethyl cellulose (DS of 0.50 to 0.70), non-ionic emulsifier, anionic emulsifier, electrolytes, and citric acid solution. Detailed ingredients and their amounts are provided in Table 1. Viscosity, pH and stability results are shown in Figure 6.Table 1 : Viscosity and Stability Studies of Gel Cream

[0096] Example 2; GEL CREAM LOW OIL CONTENT

[0097] Four samples of cream were prepared using Glycerin (and) Glyceryl Acrylate / Acrylic Acid copolymer, Phenoxyethanol and ethylhexylglycerin, Pentylene Glycol (100% Natural), Sodium Citrate, CMC, Octadecanoic acid, 12-[(l-oxooctadecyl)oxy]-, 2-octyldodecyl ester, Isodecyl neopentanoate, Glyceryl Stearate Citrate (and) Polyglyceryl-3 stearate (and) Hydrogenatedlecithin, and isoamyl laurate in various proportions and stability and viscosity studies were studied. The ingredients with amounts are provided in Table 2. It was observed that the viscosity and stability were increased. Results are shown in Figure 7. Stability failed in the absence of sodium citrate.Table 2: Viscosity and Stability Studies of Gel Cream

[0098] Example 3: Lamellar Gel Emulsion High Wax Content

[0099] A lamellar gel was prepared using Cetyl Hydroxyethylcellulose, carboxymethyl cellulose, blend of phenoxyethanol and sorbic acid in an emollient base of caprylyl glycol, Glyceryl Stearate (and) Behenyl Alcohol (and) Palmitic Acid (and) Stearic Acid (and) Lecithin (and) Lauryl Alcohol (and) Myristyl Alcohol (and) Cetyl Alcohol, Glyceryl Dilaurate, Octyldodecyl Stearate, Behenyl alcohol, Isoamyl Laurate, and sodium citrate in various proportions. The ingredients details are provided in table 3. Even with low amount of polymer, addition of sodium citrate to polymer enhances viscosity and stability as shown in Figure 8. Stability failed in the absence of sodium citrate.Table 3: Lamellar Gel Emulsion with High Wax Content

[0100] Example 4: Lamellar Gel Emulsion Low Oil Content

[0101] A lamellar gel was prepared using water, cetyl hydroxyethylcellulose, carboxymethyl cellulose, Glyceryl Stearate (and) Behenyl Alcohol (and) Palmitic Acid (and) Stearic Acid (and) Lecithin (and) Lauryl Alcohol (and) Myristyl Alcohol (and) Cetyl Alcohol, Caprylic / Capric Triglyceride (and) Cymbidium Grandiflorum Flower Extract, Isopropyl myristate, Phenoxyethanol (and) Caprylyl Glycol (and) Sorbic Acid, Jasmin lily, Maleated soybean oil glyceryl / octyldodecanol esters (and) glycerin and sodium citrate in various proportions as provided in Table 4. With and without addition of sodium citrate to polymer, viscosity and stability results are tabulated and are shown in Figure 9.Table 4: Lamellar Gel Emulsion with Low Oil ContentIngredients F02 F07Purified water Q s. Q.s.Cetyl Hydroxyethylcellulose 0.30 0.30CMC 1 00 0 80Glyceryl Stearate (and) Behenyl 3.00 3.00 Palmitic Acid (and) Stearic Acid (and) Lauryl Alcohol (and) Myri Cetyl Alcohol

[0102] Example 5: Oil-in-Water Emulsion

[0103] Three samples of oil-in-water emulsions were prepared using purified water, Cetyl Hydroxy ethyl cellulose, carboxymethyl cellulose (CMC), PEG- 100 Stearate (and) Glyceryl Stearate, refined shea butter, Propanoic acid, 2-hydroxy-, hexadecyl ester, Isocetyl Stearoyl Stearate, Octyldodecyl Stearate, Ethylhexyl Palmitate, Myristyl Myristate (and) Myristyl Laurate, Phenyl propanol (and) Propanediol (and) Caprylyl Glycol (and) Tocopherol, Phenoxyethanol (and) Caprylyl Glycol and sodium citrate in various amounts as provided in Table 5. Stability and viscosity were studied and showed improvement even with low amount of cellulose polymer as shown in Figure 10.Table 5: Oil-in-Water Emulsionble for ble for 0 days 0 days

[0104] Example 6: Oil-in-Water Sunscreen

[0105] Two samples of oil-in-water sunscreens were prepared using purified water, Glycerin (and) Glyceryl Acrylate / Acrylic Acid Copolymer (and) PVM / MA Copolymer, sodium citrate, carboxymethyl cellulose, Behenyl Alcohol, Polygly ceryl- 10 Penta stearate, Sodium Stearoyl Lactylate, Potassium cetyl phosphate, Hexanedioic acid, bi s(l -methyl ethyl) ester, Benzoic acid, 2- phenylethyl ester, Butyl Methoxydibenzoyl methane, Ethylhexyl salicylate, Iscotrizinol, Bis- Ethylhexyloxyphenol Methoxyphenyl Triazine, Ethylhexyl Triazone, Palmitic Acid, Ethyl cellulose (and) Diisopropyl Adipate, Polycitronellol Acetate, Phenyl propanol (and) Propanediol (and) Caprylyl Glycol (and) Tocopherol, Raspberry Ketone, Infmi'tea and PF Hamman The in various amounts as provided in Table 6. Viscosity and stability studies are shown in Figure 11.Table 6: Oil-in-Water SunscreenStability

[0106] Example 7: Sunkissed Tanning Elixir Gel

[0107] A clear bronze gel of Sunkissed tanning formula was prepared using sucinnic acid disodium salt, cellulose gum, Benzyl Alcohol (and) Sodium Benzoate (and) Potassium Sorbate (and) Water / Aqua, Water / Aqua (and) Glycerin (and) Sodium PCA (and) Erythritol (and) Carrageenan (and) Xanthan Gum, Dihydroxyacetone, Butylene Glycol, Caramel, Water / Aqua (and) Glycerin (and) Pisum Sativum (Pea) Extract, Alcohol and Water / Aqua (and) Citric acid in various amounts as provided in table 7.Table 7: Sunkissed Tanning Elixir

[0108] The obtained gel had a pH: 5.00 to 5.50, and viscosity (24h): of 30000 to 50000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute | 25°C). This formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0109] Example 8; Clay-full detox mask

[0110] A detox mask was prepared using purified water, cellulose gum, cetyl hydroxyethyl cellulose, disodium succinate, guar hydroxypropyl trimonium chloride, butylene glycol, raspberry ketone, phenyl propanol, propanediol, Glyceryl Stearate (and) Stearyl Alcohol (and) Cetyl Alcohol (and) Behenyl Alcohol (and) Palmitic Acid (and) Stearic Acid (and) Hydroxyethyl Cetearamidopropyldimonium Chloride, Marsdenia Cundurango Bark Extract (and) Caprylic / capric Triglyceride, Octyldodecyl Stearoyl Stearate, Maleated Soybean Oil Glyceryl / Octyl dodecanol Esters, Kaolin, Indigofera Tinctoria Extract, Fragrance / parfum (and) Limonene (and) Linalool in varying amounts are provided in the below table 8.Table 8: Clay full detox Mask[OHl] The obtained mask was a blue-purple cream, oil-in-water emulsion, had a pH: 6.20 to 6.70, and viscosity (24h): of 180000 to 220000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute |25°C). This detox mask formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0112] Example 9; Youth Collagen Drops

[0113] A gel of collagen drops was prepared using the ingredients water, cellulose gum, Sodium citrate, water / Aqua (and) Glycerin (and) Sodium PC A (and) Erythritol (and) Hydrolyzed Collagen (and) Carrageenan (and) Xanthan Gum (and) Hexapeptide-9, Propanediol (and) Caprylyl Glycol (and) Capryl hydroxamic acid, Sodium Hyaluronate, and Pentylene Glycol in varying amounts as provided in table 9 below:Table 9: Youth Collagen Drops

[0114] The clear gel so obtained had pH of 6.00 to 6.50, Viscosity (24h) of 3500 to 5000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute | 25°C). This formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0115] Example 10: Vitafruit C-bright Essence

[0116] A gel of collagen drops was prepared using the ingredients purified water, cellulose Gum, Sodium citrate, water / Aqua (and) Glycerin (and) Sodium PCA (and) Erythritol (and) Hydrolyzed Collagen (and) Carrageenan (and) Xanthan Gum (and) Hexapeptide-9, 1,3 -propanediol (and) Water / Aqua (and) Myrciaria Dubia Fruit Extract, Ascorbyl Glucoside, Propanediol (and) Caprylyl Glycol (and) Caprylhydroxamic acid and Pentylene glycol in varying amounts as provided in table 10 below.Table 10: Youth Collagen Drops

[0117] The product so formed is an orange sparkling clear gel having a pH of about 6.30 to 6.80 and Viscosity (24h) of about 20 000 to 30 000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute | 25°C). This formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0118] Example 11: Just Clarify Serum

[0119] Just clarify serum was prepared using the following ingredients purified water, Cellulose Gum, Sodium citrate, Benzyl alcohol (and) sodium Benzoate (and) potassium Sorbate (and) water, Salicylic acid, Alcohol, Sodium hydroxide, CI 42090 (Blue 1) and CI 19140 (Yellow 5) in varying amounts as provided below in table 11.Table 11 : Just Clarify SerumIngredients | % ~~|

[0120] The serum so obtained is a clear green gel having a pH of 4.00 to 4.50 and a Viscosity (24h) of 10 000 to 15 000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute | 25°C). This formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0121] Example 12: Pink Pepper Caviar

[0122] A clear gel with pearly beads was prepared using the following ingredients purified water, cellulose gum, sodium citrate, Propane diol (and) caprylyl glycol (and) capryl hydroxamic acid, levulinic acid and water / aqua, Propanediol (and) Water / aqua (and) Schinus Molle Extract, Mica (and) CI 77491 (Iron Oxides) and water / Aqua (and) CI 77019 (Mica) (and) CI 77891 (Titanium Dioxide) (and) Algin (and) Phenoxyethanol (and) Caprylyl Glycol (and) Gellan Gum (and) Calcium Chloride (and) Hydroxyethylcellulose (and) Citric Acid (and) Glycerin (and) Sodium Citrate (and) Soluble Collagen (and) CI 73360 (Red 30) (and) Sodium Benzoate (and) Lauryl Glucoside in varying amounts as presented in table 12 below.Table 12: Pink Pepper Caviar

[0123] The gel so obtained is a clear gel with pearly pink beads having a pH of 5.00 to 5.50 and a Viscosity (24h) of 35000 to 55000 cps (Brookfield RVT | Spindle B | 5 RPM | 1 minute | 25°C). This formula has passed 3-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0124] Example 13: Ultra Repair 4D Cream

[0125] A cream was prepared using the ingredients purified water, cellulose gum, sodium citrate, Raspberry ketone, glyceryl Stearate (and) Laureth-23, Butyrosspermum Parkii (Shea) Butter, Isodecyl Neopentanoate, Caprylic / Capric Triglyceride (and) Cymbidium Grandiflorum (Orchid) Flower Extract, Cetyl Alcohol, Tribehenin, Tribehenin PEG-20 Esters, Polycitronellol Acetate, Sclareolide, Caprylyl Glycol (and) Glyceryl Caprylate (and) Propanediol, Fragrance / Parfum (and) Benzaldehyde, CI 17200 (red 33) and CI 42090 (blue 1) in varying amounts as presented in table 13 below.Table 13: Ultra Repair 4D Cream

[0126] The cream so obtained is light purple-pink cream (o / w emulsion) having a pH of 5.80 to 6.30 and a Viscosity (24h) of 35000 to 55000 cps (Brookfield RVT | Spindle C | 5 RPM | 1 minute | 25°C). This formula has passed 2-month accelerated lab stabilities and a 28-day challenge efficacy test.

[0127] Examples 14-17; Cream Formulations using Carboxymethyl Starch

[0128] Four different cream formulations were prepared using the ingredients purified water, propylene glycol (and) diazolidinyl urea (and) iodopropynyl butylcarbamate, Raspberry Ketone, sodium citrate, citric acid, sodium carboxymethyl starch, glyceryl stearate, glyceryl Stearate Citrate (and) Polyglyceryl-3 Stearate (and) Hydrogenated Lecithin, Butyrospermum Parkii (Shea) Butter, Isocetyl Stearoyl stearate, Octyldodecyl Stearate, Ethylhexyl Palmitate, Isoamyl laurate and Cetyl Alcohol in varying amounts as presented in table 14 below.Table 14: Low Surfactant Emulsification Cream

[0129] The creams so obtained had a pH range between 5.2 to 5.7. Amount of sodium carboxymethyl starch used in each formulation was different.

[0130] EXAMPLES 18 to 20; Non-Ionic Emulsion vs Activator

[0131] Comparison studies were conducted using carboxymethyl starch in different weight ratios.The formulations along with the ingredients are provided in the table below.Table 15: Non-Ionic Emulsion vs Activator

[0132] Stability of viscosity was tested for 3 months. It was observed that formulations comprising carboxymethyl starch in combination with citrate solutions have shown stable viscosity over starch alone. Effect of buffer concentration on polymer particle size and viscosity are shown in figure 14. The results of viscosity stability are graphically presented in figure 15.

[0133] Examples 21 to 22 - Non-Ionic emulsion

[0134] Two different formulations were prepared studying effect of activated starch and combination of starch with sodium citrate. The formulations along with ingredients water, activated starch, PEG- 100 Stearate (and) Glyceryl Stearate, hdrogenated Coco-Glycerides, Cetyl Lactate, Isocetyl Stearoyl Stearate, Octyldodecyl Stearate, Ethylhexyl Palmitate, Myristyl Myristate (and) Myristyl Laurate in varying amounts as provided in the table below:Table 16: Non-Ionic Emulsion

[0135] Formulations so obtained showed stable viscosity for 1 month and are graphically presented in figure 16.

[0136] Examples 23 to 24 - Body lotion

[0137] Two body lotions samples were prepared using the ingredients Water / Aqua, Sodium citrate, Citric acid, Raspberry Ketone, Activated Starch, Glyceryl Stearate, Glyceryl Stearate Citrate (and) Polyglyceiyl-3 stearate (and) Hydrogenated lecithin, Butyrospermum Parkii (Shea) Butter, Isocetyl Stearoyl Stearate, Octyldodecyl Stearate, ethylhexyl Palmitate, Isoamyl Laurate, propylene glycol (and) diazolidinyl urea (and) iodopropynyl butylcarbamate in varying amounts as provided in the table 17 below.Table 17 - Body Lotion

[0138] The two body lotion formulations prepared were found to be stable for viscosity and results are shown in figure 17.

[0139] Examples 25 to 26: Gel Cream

[0140] Two samples of Gel cream were prepared using water / Aqua, butylene glycol, Activated Starch, macadamia Ternifolia Seed Oil, Cl 5- 19 Alkane, Triheptanoin, Glyceryl Citrate / Lactate / Linoleate / Oleate, Phenoxyethanol (and) Ethylhexylglycerin, Citric acid and Sodium citrate in varying amounts as provided in the table 18 below.Table 18 - Gel Cream

[0141] The gel cream so prepared has a pH of 5.46 and 5.94 and showed stable viscosity when tested for 3 months and the results are shown in figure 18.

[0142] Examples 27 to 28; Simple Gel Cream

[0143] Simple gel creams were prepared using the ingredients water / Aqua, Carboxymethyl Starch, Ethylhexyl Palmitate, Glyceryl Citrate / Lactate / Linoleate / Oleate, Phenoxyethanol (and) Ethylhexylglycerin, Citric acid, Sodium citrate in varying amounts as provided in the table 19 below.Table 19: Simple Gel Cream

[0144] The gel creams so prepared showed a pH of 5.46 and 5.84. Cream prepared using combinations of carboxymethyl starch with sodium citrate showed stable viscosity for 2 months while the cream prepared using only carboxymethyl starch was not stable. Results are shown in figure 19.

[0145] While the compositions and methods of the disclosed and / or claimed inventive concept(s) have been described in terms of particular aspects, it will be apparent to those of ordinary skill in the art that variations may be applied to the compositions and / or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the disclosed and / or claimed inventive concept(s). All such similar substitutes andmodifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the disclosed! and / or claimed inventive concept(s).

Claims

What is claimed is:

1. An aqueous composition comprising: a) 0.1 to 10 wt.% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch, b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 wt.% of water.

2. The aqueous composition according to claim 1, wherein the composition optionally comprises 0.1 to 10 wt.% of at least one positively charged molecule selected from the group consisting of aluminum chloride, behenalkonium chloride, behentrimonium chloride, calcium chloride, citric acid, calcium sulphate, cassia hydroxypropyltrimonium chloride, cinnamidopropyl trimonium chloride, dicetyldimonium chloride, guar hydroxypropyltrimonium chloride, hydroxyethyl cetearamidopropyl dimonium chloride, hydroxypropyl bis-hydroxyethyl dimonium chloride, magnesium sulphate, magnesium chloride, malic acid, myristamidopropyl PG- dimonium chloride phosphate; potassium borate, potassium chloride, sodium borate, sodium chloride, stearalkonium chloride, sodium gluconate, sodium malate, sodium phosphate, sodium tartarate, succinic acid, tartaric acid, trisodium ethylene diamine succinate, zinc chloride, zinc citrate, zinc gluconate, zinc glycine, and zinc sulfonate.

3. The aqueous composition according to claim 1, wherein the composition is a suspension composition or an emulsion composition.

4. The aqueous composition according to claim 1, wherein the polysaccharide is in the form of a solid particulate or in the form of a powder.

5. The aqueous composition according to claim 1, wherein the composition has an average viscosity range of from about 500 to about 300,000 cps.

6. The aqueous composition according to claim 1, wherein the carboxy methyl cellulose (CMC) or carboxy methyl starch has a molecular weight in the range of from about 150,000 to about 3,000,000 Daltons.

7. The aqueous composition according to claim 1, wherein carboxy methyl starch is crosslinked.

8. The aqueous composition according to claim 1, wherein the composition is a personal care composition, a home care composition, an industrial composition, a coating composition, an agricultural composition, or a pharmaceutical composition.

9. The aqueous composition according to claim 8, wherein the personal care composition is a hair care composition or a skin care composition.

10. The aqueous composition, according to claim 1, wherein the aqueous composition is formulated into a combo in a gel cream (low oil content), lamellar gel emulsion (high wax content), lamellar gel emulsion (low oil content), oil-in-water emulsion, and oil-in-water sunscreen.

11. An aqueous suspension composition comprising: a) 0.1 to 10.0 wt.° / o of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 wt.% of water.

12. An aqueous emulsion composition comprising: a) 0.1 to 10.0 wt.% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 w .% of at least one electrolyte selected from citric acid, sodium citrate, succinic acid and sodium succinate; and c) 10 to 90 wt.% of water.

13. The aqueous emulsion composition according to claim 12, wherein the composition is a sprayable emulsion composition.

14. A process for preparing an aqueous composition, the process comprising the steps of: a) dispersing carboxymethyl cellulose powder having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or carboxymethyl starch in water; b) addition of electrolyte before or together with powder of step a), c) mixing the contents of a) and b) for 20 to 40 min at high speed, and d) obtaining the aqueous composition.

15. The process for preparing aqueous composition according to claim 14, wherein the electrolyte is selected from citric acid, sodium citrate, succinic acid and sodium succinate.

16. The process for preparing aqueous composition according to claim 14, wherein the aqueous composition is tolerant to personal care formulations containing electrolytes & minerals, compatible to ethanol containing formulations and compatible at pH range of 4 to 8.

17. The process for preparing aqueous composition according to claim 14, wherein the aqueous composition is in the form of a smooth gel.

18. An aqueous skin care composition comprising (A) 0.1 to 10 wt.° / o of aqueous composition a) 0.1 to 10 w / .% of biodegradable polysaccharide selected from (i) carboxymethyl cellulose (CMC) having an average degree of carboxymethyl substitution (DS) per anhydroglucose unit in the range of 0.5 to 0.70 or (ii) carboxymethyl starch; b) 0.1 to 10 wt.° / o of at least one electrolyte selected from sodium citrate and sodium succinate; c) 10 to 90 wt.° / o of water; (B) 0.01 to 60 wt.° / o at least one skin care additive; and (C) water.

19. The aqueous skin care composition according to claim 18, wherein the composition is an oil-in-water emulsion, a water-in-oil emulsion, a sprayable emulsion, or a suspension.

20. The aqueous skin care emulsion according to claim 18, wherein the skin care additive is selected from anti-inflammatory agents, desquamation agents, vitamin B compounds, vitamin E compounds, vitamin C compounds, vitamin D compounds, peptides, protease inhibitors, sugar amines, sunscreens, chelators, skin lightening compounds, non-vitamin antioxidant radical scavengers, phytosterols, plant hormones, protease inhibitors, tyrosinase inhibitors, topical anesthetics, anti-cellulite agents, sunless tanning agents, N-acyl amino acid compounds, preservatives, preservative boosters, glycerin, glycol, emulsifiers, surfactants, oils, esters, waxes, fragrances, essential oils, microbial protection agents, antifungals, keratolytic agents, alcohols,moisturizing agents, polymers, waterproofing agents, hair care polymers, pigments, dyes, silicas, kaolin, and powders, natural ingredients, polyesters, Fluoride, phosphates, peroxides their derivatives and mixtures thereof.

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