Emulsion with high level of perfume

The oil-in-water macroemulsion composition with optimized phase ratios and low surfactant content addresses low fragrance retention in emulsions, achieving higher fragrance loading and stable, sprayable application.

WO2025255125A1PCT designated stage Publication Date: 2025-12-11COTY INC
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Patent Information

Application Number
PCT/US2025/032080
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-04
Filing Date
2025-06-03
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing emulsions struggle to retain a useful amount of fragrance due to low retention capacity.

Method used

An oil-in-water macroemulsion composition with specific ratios of aqueous, aromatic, and oil phases, including low surfactant content, stabilized by acrylates/VP copolymer and acrylates/C10-30 alkyl acrylate crosspolymer, allowing for higher fragrance loading and enhanced stability.

Benefits of technology

The emulsion achieves higher fragrance loading and maintains scent integrity, providing a stable, sprayable, and non-sticky application with improved sensory attributes.

✦ Generated by Eureka AI based on patent content.

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Abstract

In some aspects, the techniques described herein relate to an oil-in-water macroemulsion composition including: an aqueous phase including: 30% to 85% of water; 0.01% to 1% of acrylates / VP copolymer; 0.05% to 0.5% of acrylates / C 10-30 alkyl acrylate crosspolymer; an aromatic phase including; 0% to 25% of fragrance ingredients; and an oil phase including: 1% to 10% of vegetable oil or synthetic oil; and no more than 5% of surfactants, emulsifiers, or a mixture thereof.
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Description

EMULSION WITH HIGH LEVEL OF PERFUMECLAIM OF PRIORITY

[0001] This patent application claims the benefit of priority to FR Application Serial No 2405834, filed June 4, 2024, which is incorporated by reference herein in its entirety.BACKGROUND

[0002] Emulsions can be a useful vehicle for retaining and delivering a fragrance to a user. However, a problem with using an emulsion is that the amount of fragrance that can typically be retained in the emulsion is quite low. Thus, it can be difficult to develop an emulsion with a useful amount of fragrance.SUMMARY OF THE INVENTION

[0003] In some aspects, the techniques described herein relate to an oil-in-water macroemulsion composition including: an aqueous phase including: 30% to 85% of water; 0.01% to 1% of acrylates / VP copolymer; 0.05% to 0.5% of acrylates / C10-30 alkyl acrylate crosspolymer; an aromatic phase including: 0% to 25% of fragrance ingredients; and an oil phase including: 1% to 10% of vegetable oil or synthetic oil; and no more than 5% of surfactants, emulsifiers, or a mixture thereof.DETAILED DESCRIPTION OF THE INVENTION

[0004] Reference will now be made in detail to certain aspects of the disclosed subject matter, examples of which are illustrated in part in the accompanying drawings. While the disclosed subject matter will be described in conjunction with the enumerated claims, it will be understood that the exemplified subject matter is not intended to limit the claims to the disclosed subject matter.

[0005] Throughout this document, values expressed in a range format should be interpreted in a flexible manner to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a range of “about 0.1% to about 5%” or “about 0.1% to 5%” should be interpreted to include not just about 0.1% to about 5%, but also the individual values (e.g., 1%, 2%, 3%, and 4%) and the sub-ranges (e.g., 0.1% to 0.5%, 1.1% to 2.2%, 3.3% to 4.4%)within the indicated range. The statement “about X to Y” has the same meaning as “about X to about Y,” unless indicated otherwise. Likewise, the statement “about X, Y, or about Z” has the same meaning as “about X, about Y, or about Z,” unless indicated otherwise.

[0006] In this document, the terms “a,” “an,” or “the” are used to include one or more than one unless the context clearly dictates otherwise. The term “or” is used to refer to a nonexclusive “or” unless otherwise indicated. The statement “at least one of A and B” or “at least one of A or B” has the same meaning as “A, B, or A and B.” In addition, it is to be understood that the phraseology or terminology employed herein, and not otherwise defined, is for the purpose of description only and not of limitation. Any use of section headings is intended to aid reading of the document and is not to be interpreted as limiting; information that is relevant to a section heading may occur within or outside of that particular section. A comma can be used as a delimiter or digit group separator to the left or right of a decimal mark; for example, “0.000,1” is equivalent to “0.0001.” All publications, patents, and patent documents referred to in this document are incorporated by reference herein in their entirety, as though individually incorporated by reference. In the event of inconsistent usages between this document and those documents so incorporated by reference, the usage in the incorporated reference should be considered supplementary to that of this document; for irreconcilable inconsistencies, the usage in this document controls.

[0007] In the methods described herein, the acts can be carried out in any order without departing from the principles of the invention, except when a temporal or operational sequence is explicitly recited. Furthermore, specified acts can be carried out concurrently unless explicit claim language recites that they be carried out separately. For example, a claimed act of doing X and a claimed act of doing Y can be conducted simultaneously within a single operation, and the resulting process will fall within the literal scope of the claimed process.

[0008] The term “about” as used herein can allow for a degree of variability in a value or range, for example, within 10%, within 5%, or within 1% of a stated value or of a stated limit of a range, and includes the exact stated value or range.

[0009] The term “substantially” as used herein refers to a majority of, or mostly, as in at least about 50%, 60%, 70%, 80%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.9%, 99.99%, or at least about 99.999% or more, or 100%. The term “substantially free of’ as used herein can mean having none or having a trivial amount of, such that the amount of material present does not affect the material properties of the composition including the material, such that about 0 wt% to about 5 wt% of the composition is the material, or about 0wt% to about 1 wt%, or about 5 wt% or less, or less than or equal to about 4.5 wt%, 4, 3.5, 3, 2.5, 2, 1.5, 1, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.01, or about 0.001 wt% or less, or about 0 wt%.

[0010] According to various aspects of the present disclosure, oil-in-water macroemulsion (alternatively referred to as “an emulsion”) is disclosed. The emulsion includes a an aromatic phase, an oil phase and an aqueous phase. The oil phase includes various oils, the aromatic phase includes a fragrance component, and the aqueous phase stabilizes the emulsion and includes a surfactant component. Advantageously, the emulsion is stable enough to allow for higher loading of fragrance component than can be found in typical emulsions. For example, the fragrance component can be present in a concentration ranging from about 0.2 wt% to about 30 wt% of the emulsion, about 0.5 wt% to about 25 wt% of the emulsion, less than, equal to, or greater than about 0.2 wt%, 0.5, 1, 5, 10, 15, 20, 25, or about 30 wt%. As used herein wt% or percentages are based on the wt% of the composition as a whole. In some examples, The emulsion can be free of (e.g., include 0 wt%) fragrance component.

[0011] The fragrance component can include a wide range of fragrance categories. The fragrance component can include a single fragrance or a mixture of multiple fragrances within the same category or from multiple categories.. For example, the fragrance component can include floral fragrances (e.g., rose, jasmine, lavender, and geranium). Floral fragrances are among the most popular and widely used in perfumery. They tend to be volatile, so the emulsion system must be capable of stabilizing these essences without significant evaporation or degradation of the scent profile. The fragrance component can also include citrus fragrances (e.g., lemon, bergamot, orange, and grapefruit). Citrus oils are known for their fresh and uplifting scents but are also prone to oxidation. The emulsion system should protect these delicate oils from oxidizing agents and maintain their integrity throughout the product's shelflife. The fragrance component can also include woody fragrances (e.g., sandalwood, cedarwood, patchouli, and vetiver). Woody notes are typically base notes with a longer-lasting scent. They are less volatile but may have solubility challenges. The emulsion should be able to solubilize and stabilize these heavier oils. The fragrance component can also include spicy fragrances (e.g., vanilla, musk, amber, and spices like cinnamon). Spicy fragrances often provide warmth and depth to a perfume composition. The fragrance component can also include fruity fragrances (e.g., apple, peach, berry, and tropical fruits). Fruity scents are often synthetic due to the difficulty of extracting oils from fruit. They can be sensitive to light and heat, so the emulsion should offer some protection against these elements to prevent the fragrance from fading. The fragrance component can also include green fragrances(e.g., grass, green tea, and cucumber). Green fragrances are fresh and natural-smelling, often used to impart a clean scent. They can be delicate and may be susceptible to alteration in the presence of reactive ingredients, so the emulsion should be formulated to be gentle on these types of fragrances. The fragrance component can also include aquatic fragrances (e.g., marine, oceanic, and rain notes). Aquatic fragrances are synthetic notes that mimic the fresh scent of water and wet air. They are often light and can be easily overpowered by other ingredients, so the emulsion should be balanced to allow these scents to come through. The fragrance composition can also include gourmand fragrances (e.g., chocolate, coffee, caramel, and edible-smelling notes). Gourmand fragrances are rich and sweet, often creating a sense of warmth and comfort. They can be quite potent and may affect the emulsion's viscosity, so careful formulation is needed to maintain the desired texture.

[0012] The aqueous phase of the emulsion functions to maintaining the dispersion of the fragrance oil phase within the water base. The aqueous phase also helps to accommodate the higher loading of fragrance component. The aqueous phase also accomplishes many of the requirements noted above for the respective fragrance categories. This phase is formulated to ensure the stability of the emulsion without relying on a high content of surfactants, which is a common practice in traditional emulsions. The stabilizing phase comprises several key components, each serving a specific function to enhance the emulsion's performance and sensory attributes

[0013] An example of a component of the aqueous phase are humectants and skin conditioners. Examples can include diglycerin (cas 261-605-5) and glycerin (cas 56-81-5), hyaluronic acid, 1,2-hexanediol, urea, lactic acid, propylene glycol, di propylene glycol, butylene glycol, sorbitol, propane-1, 3-diol, propanediol, caprylyl glycol, isopropene glycol, hexylene glyol, pentylene glycol, honey, ethylene glycol, polypropylene glycol, hydrolyzed collagen, sodium pea, , alanine, fructose, glucose, allantoin, trimethylglycine, sodium lactate, aloe barbadensis leaf juice, or a mixture thereof. These humectants are included in the formulation for their ability to attract and retain moisture within the skin. They serve as skin conditioners, providing a hydrating effect that contributes to the overall sensation of smoothness and comfort upon application of the emulsion. The humectants and skin conditioners can range from about 0.5 wt% to about 30 wt%, about 1 wt% to about 10 wt%, less than, equal to, or greater than about 0.5 wt%, 1, 1.5, 2, 2.5, 3, 3, .5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24.5, 25, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, or 30 wt%

[0014] Another component than can be present in the aqueous phase are surfactants and emulsion stabilizers. Examples can include acrylates / C10-30 alkyl acrylate crosspolymer (CAS 176429-87-1) polyglycerol ester and a mixture of glycerin and glycine soja (soybean) seed extract. This ingredient functions as both a surfactant and an emulsion stabilizer. It helps to form a stable emulsion by reducing the surface tension between the oil and water phases, allowing for the creation of fine droplets of fragrance oil that remain evenly dispersed throughout the emulsion. The crosspolymer is particularly effective at low concentrations, which aligns with the invention's objective of minimizing surfactant content while maintaining emulsion stability. The surfactants and emulsion stabilizers can range from about 0.0.05 wt% to about 30 wt%, about 0.2 wt% to about 10 wt%, less than, equal to, or greater than about 0.05 wt%, 0.1, 0.2, 0.5, 1, 1.5, 2, 2.5, 3, 3, .5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15,15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24.5, 25, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, or 30 wt%.

[0015] Another component that can be present in the oil phase includes emollients. An example of an emollient is caprylic capric triglyceride (CAS 73398-61-5), isopropyl myristate, isopropyl palmitate, triethyl citrate, caprylic / capric / succinic triglyceride, diisopropyl adipate, diethylhexyl malate, cetyl ethylhexanoate, ethylhexyl palmitate, ethylhexyl stearate, sismondsia chinensis (jojoba) seed oil, prunus amygdalus dulcis (sweet almond) oil, olea europaea (olive) fruit oil, cocos nucifera (coconut) oil, helianthus anuus (sunflower) seed oil, 5heobro spinosa kernel oil, persea gratissima (avocado) oil, butyrospermum parkii (shea) butter, 5heobroma cacao (cocoa) seed butter, lanolin, cera alba (beeswax), copernica cerifera (carnauba) wax, isononyl isononanoate, or a mixture thereof . This ester of caprylic and capric acids with glycerin is included as an emollient. It enhances the skin feel of the emulsion by providing a lightweight, non- greasy barrier that helps to soften and smooth the skin. Its inclusion also contributes to the overall aesthetic appeal of the product, as it imparts a silky texture that is desirable in high-end cosmetic formulations. The emollients also helps to enhance skin feeling and emulsification of fragrance oils. The emollients can range from about 0.5 wt% to about 30 wt%, about 1 wt% to about 10 wt%, less than, equal to, or greater than about 0.5 wt%, 1, 1.5, 2, 2.5, 3, 3, .5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18,18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24.5, 25, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, or 30 wt%.

[0016] Another component that can be present in the aqueous phase includes thickeners. Examples of thickeners include diutan gum (CAS 125005-87-0), xanthan gum (CAS 11138-66-2), and sclerotium gum (CAS 39464-87-4), tara gum and 2-acrylamido-2-methylpropane sulfonicacid (AMPS) , Microcrystalline cellulose (and) Sphingomonas ferment extract (and) Cellulose gum or synthetic thickeners like carbomers. These thickeners serve to increase the viscosity of the emulsion, which can be tailored to achieve the desired consistency, whether it be sprayable or more substantive for suspending properties. Each gum offers unique rheological properties that can be exploited to fine-tune the emulsion's texture, spreadability, and stability under various storage conditions. The thickeners can range from about 0.1 wt% to about 30 wt%, about 1 wt% to about 10 wt%, less than, equal to, or greater than about 0.1 wt%, 0.1, 1 , 1.5, 2, 2.5, 3, 3, .5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15,15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24.5, 25, 25.5,26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, or 30 wt%.

[0017] Another component that can be present in the aqueous phase includes a thixotropic thickening agent. Examples of which include ammonium acryloyldimethyltaurate / VP copolymer (CAS 91081-14-0). This polymer acts as a thixotropic thickening agent, meaning that it provides a shear-thinning property to the emulsion. This characteristic is particularly beneficial for products that need to be sprayable, as the emulsion becomes less viscous under the shear force of spraying but returns to a more viscous state once applied to the skin. The inclusion of this agent allows for the creation of textures that can be easily dispensed while still providing a rich feel upon application. The thixotropic thickening agent can range from about 0.01 wt% to about 6 wt%, about 0.1 wt% to about 5 wt%, less than, equal to, or greater than about 0.01 wt%, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, or about 6 wt%.

[0018] Another component that can be present in the aqueous phase includes a cosurfactant for low-temperature storage. An example of which can include butylene glycol (CAS 107-88-0) pentylene glycol, 1 ,2-hexanediol, propylene glycol, or dipropylene glycol. Butylene glycol is incorporated as a co-surfactant and emulsion stabilizer, particularly effective for enhancing the stability of the emulsion during low-temperature storage. It also serves as a solvent for other ingredients and can impart additional humectant properties to the formulation. The cosurfactant for low-temperature storage can range from about 0.5 wt% to about 30 wt%, about 1 wt% to about 10 wt%, less than, equal to, or greater than about 0.5 wt%, 1, 1.5, 2, 2.5, 3, 3, .5, 4,4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16,16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24.5, 25, 25.5, 26, 26.5,27, 27.5, 28, 28.5, 29, 29.5, or 30 wt%.

[0019] In addition to the ingredients described above, other optional components can be cosmetics additives. Examples of optional ingredients include but are not limited to dyes, UV filters, preservatives, pH buffers, anti-oxidants, fragrance capsules.

[0020] The aqueous phase's components are selected not only for their functional contributions to the emulsion's stability and texture but also for their compatibility with the fragrance oil phase and their ability to support a high load of perfume without compromising the emulsion's integrity. The innovative approach of using a very low level or no surfactant is a key differentiator of this invention, challenging the conventional wisdom that high levels of surfactants are necessary for stabilizing high-perfume-load emulsions. This unique composition allows for the creation of a product that delivers a strong perfume performance in a water base, providing a pleasant sensory experience without the stickiness often associated with such products

[0021] Beyond the ability to have higher loading of fragrance components, the emulsion delivers additional benefits. For, example the emulsion is sprayable through a fine fragrance type of pump. The sprayability can be attributed to the thixotropic agent to provide sprayable properties. Also, the emulsion tends to provide a non-sticky sensation on the skin as perceived by a user. Additionally, the emulsion can be constructed such that it is free from any alcohols. The absence of alcohols, can make the emulsion suitable for use in regions with volatile organic compound (VOC) restrictions or alcohol bans. Additionally, unlike other potential emulsions that are free of alcohol, the instant emulsion can be free of lecithin.

[0022] The beneficial properties of the instant emulsion can make it suitable for use as a fine fragrance, premium, and / or lifestyle scenting brands

[0023] In general the emulsion can be made by mixing the fragrance oil phase and the stabilizing phase at room temperature. Following the initial mixing, the emulsion is stabilized using a high-speed mixer with a rotor-stator type configuration

[0024] Formulating the emulsion at room temperature has several benefits. For example, the relatively low temperature helps to prevent degradation of the fragrance component and any other sensitive component in the emulsion. Additionally, on a larger scale, a room temperature reaction uses less energy than a procedure requiring cooling or heating. As used herein room temperature refers to a temperatures of about 25 °C.Examples

[0025] Various aspects of the present invention can be better understood by reference to the following Examples which are offered by way of illustration. The present invention is not limited to the Examples given herein.

[0026] Table 1 shows that a specific amount of Aristoflex AVC is needed to reach a stable formula. Compositions that do not include more than 1% % or less than 0.05% performed best and received a “pass”. The “pass” or “phase separation” designation was deterred according to the below freezing test procedure.

[0027] Freezing Test Procedure : For 8 days, the temperature in the chamber varies in 24- hour cycles from -20°C to +20°C. In all, there are 4 cycles of 24h at -20°C and 4 cycles of 24h at +20°C. After 8 days, the physical stability of the formula is checked. It is a pass when there is no color change and no phase separation, and it is a fail when there is a color change or a phase separation.

[0028] The terms and expressions that have been employed are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the aspects of the present invention. Thus, it should be understood that although the present invention has been specifically disclosed by specific aspects and optional features, modification and variation of the concepts herein disclosed may be resorted to by those of ordinary skill in the art, and that such modifications and variations are considered to be within the scope of aspects of the present invention.Exemplary Aspects.

[0029] The following exemplary aspects are provided, the numbering of which is not to be construed as designating levels of importance:

[0030] Aspect 1. An oil-in-water macroemulsion composition comprising: an aqueous phase comprising: 30% to 85% of water; 0.01% to 1% of acrylates / VP copolymer; 0.05% to 0.5% of acrylates / C 10-30 alkyl acrylate crosspolymer; an aromatic phase comprising: 0% to 25% of fragrance ingredients; and an oil phase comprising: 1% to 10% of vegetable oil or synthetic oil; and no more than 5% of surfactants, emulsifiers, or a mixture thereof.

[0031] Aspect 2. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion is sprayable through a fine fragrance type of pump.

[0032] Aspect 3. The oil-in-water macroemulsion of Aspect 1 , further comprising a thixotropic agent in the aqueous phase to provide sprayable properties.

[0033] Aspect 4. The oil-in-water macroemulsion of Aspect 1, further comprising a thickener in the aqueous phase to provide suspending properties.

[0034] Aspect 5. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion further comprises skin conditioning ingredients in the aqueous phase.

[0035] Aspect 6. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion provides a non-sticky sensation on the skin as perceived by a user.

[0036] Aspect 7. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises diglycerin or glycerin as a humectant and skin conditioner.

[0037] Aspect 8. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises acrylates / C10-30 alkyl acrylate crosspolymer as a surfactant and emulsion stabilizer.

[0038] Aspect 9. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises polyglycerol esters as surfactants.

[0039] Aspect 10. The oil-in-water macroemulsion of Aspect 1, wherein the oil phase comprises Caprylic Capric Triglyceride as an emollient and skin conditioner.

[0040] Aspect 11. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises diutan gum, xanthan gum, or sclerotium gum as thickeners.

[0041] Aspect 12. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises Ammonium Acryloyldimethyltaurate / VP Copolymer as a thixotropic thickening agent.

[0042] Aspect 13. The oil-in-water macroemulsion of Aspect 1, wherein the aqueous phase comprises butylene glycol as an emulsion stabilizer and co-surfactant for low-temperature storage.

[0043] Aspect 14. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion is free from alcohol.

[0044] Aspect 15. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion is expected to be used in fine fragrance, premium, and lifestyle scenting brands.

[0045] Aspect 16. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion is characterized by the absence of lecithin,.

[0046] Aspect 17. The oil-in-water macroemulsion of Aspect 1, wherein the emulsion is characterized by a very low level or absence of surfactant.

[0047] Aspect 18. A method for producing an oil-in-water macroemulsion as claimed in Aspect 1, comprising the steps of: mixing the aqueous phase, aromatic phase, and oil phase at room temperature; applying high shear mixing to create small oil droplets and stabilize the emulsion.

[0048] Aspect 19. The method of Aspect 18, wherein the emulsion is formulated at room temperature.

[0049] Aspect 20. The method of Aspect 18, wherein the emulsion is stabilized using a high-speed mixer with a rotor-stator type configuration.

Claims

CLAIMSWhat is claimed is:

1. An oil-in-water macroemulsion composition comprising: an aqueous phase comprising:30% to 85% of water;0.01% to 1% of acrylates / VP copolymer;0.05% to 0.5% of acrylates / C 10-30 alkyl acrylate crosspolymer; an aromatic phase comprising:0% to 25% of fragrance ingredients; and an oil phase comprising:1% to 10% of vegetable oil or synthetic oil; and no more than 5% of surfactants, emulsifiers, or a mixture thereof.

2. The oil-in-water macroemulsion of claim 1, wherein the emulsion is sprayable through a fine fragrance type of pump.

3. The oil-in-water macroemulsion of claim 1, further comprising a thixotropic agent in the aqueous phase to provide sprayable properties.

4. The oil-in-water macroemulsion of claim 1, further comprising a thickener in the aqueous phase to provide suspending properties.

5. The oil-in-water macroemulsion of claim 1, wherein the emulsion further comprises skin conditioning ingredients in the aqueous phase.

6. The oil-in-water macroemulsion of claim 1, wherein the emulsion provides a non-sticky sensation on the skin as perceived by a user.

7. The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises diglycerin or glycerin as a humectant and skin conditioner.

8. The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises acrylates / C 10-30 alkyl acrylate crosspolymer as a surfactant and emulsion stabilizer.

9. The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises polyglycerol esters as surfactants.

10. The oil-in-water macroemulsion of claim 1, wherein the oil phase comprises Caprylic Capric Triglyceride as an emollient and skin conditioner.11 . The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises diutan gum, xanthan gum, or sclerotium gum as thickeners.

12. The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises Ammonium Acryloyldimethyltaurate / VP Copolymer as a thixotropic thickening agent.

13. The oil-in-water macroemulsion of claim 1, wherein the aqueous phase comprises butylene glycol as an emulsion stabilizer and co-surfactant for low-temperature storage.

14. The oil-in-water macroemulsion of claim 1, wherein the emulsion is free from alcohol.

15. The oil-in-water macroemulsion of claim 1, wherein the emulsion is expected to be used in fine fragrance, premium, and lifestyle scenting brands.

16. The oil-in-water macroemulsion of claim 1, wherein the emulsion is characterized by the absence of lecithin,.

17. The oil-in-water macroemulsion of claim 1, wherein the emulsion is characterized by a very low level or absence of surfactant.

18. A method for producing an oil-in-water macroemulsion as claimed in claim 1, comprising the steps of: mixing the aqueous phase, aromatic phase, and oil phase at room temperature; applying high shear mixing to create small oil droplets and stabilize the emulsion.

19. The method of claim 18, wherein the emulsion is formulated at room temperature.

20. The method of claim 18, wherein the emulsion is stabilized using a high-speed mixer with a rotor-stator type configuration.

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