Composition with superabsorbent polymer

Abstract

There is provided a cosmetic composition comprising at least one highly absorbent polymer; at least one water-soluble softening agent; and at least one thickening agent.

Description

[0001] Priority

[0002] This application claims priority to U.S. Provisional Application No. 62 / 954,159, filed on December 27, 2019, which is incorporated herein by reference in its entirety.

[0003] Field

[0004] The present disclosure generally relates to cosmetic compositions, and more particularly to cosmetic compositions comprising a superabsorbent polymer, and methods for their preparation and use.

[0005] Overview

[0006] One embodiment is a cosmetic composition comprising: at least one superabsorbent polymer; at least one water-soluble emollient; and at least one thickening agent.

[0007] Drawings

[0008] Figure 1 A graph of the viscosity of the cosmetic composition versus the concentration of sodium acrylate cross-linked polymer-2. This graph illustrates the thickening behavior of sodium acrylate cross-linked polymer-2.

[0009] Figure 2 Photographs of cosmetic compositions with different concentrations of sodium acrylate cross-linked polymer-2.

[0010] Figure 3 A graph showing the effect of xanthan gum concentration on the viscosity of the cosmetic composition.

[0011] Figure 4 A graph showing the effect of microfluidized squalane and xanthan gum composition on the viscosity of the cosmetic composition.

[0012] Detailed Description

[0013] Unless otherwise specified, "a" or "an" means one or more.

[0014] As used herein, the term "about" placed before a particular numerical value can mean ±20% of that value; ±18% of that value; ±15% of that value; ±12% of that value; ±8% of that value; ±5% of that value; ±3% of that value; ±2% of that value; ±1% of that value or ±0.5% of that value.

[0015] Unless otherwise specified, all content information of the composition components expressed as % refers to mass % relative to the total mass of the composition, unless otherwise specified.

[0016] Beauty compositions comprising a superabsorbent polymer, water and a surfactant are disclosed, for example, in French Patent No. FR2,989,884; US Patent Application Publication Nos. US20150342864; US 2014093461; US20160081895; US2018221256; US2015023895; and US Patent No. 9,549,891.

[0017] The inventors have developed a beauty composition comprising at least one superabsorbent polymer, at least one water-soluble softening agent and at least one thickening agent, which can be stable.

[0018] As used herein, the term "stable" means that the composition does not undergo any of separation of its components, change in color and / or change in texture (such as buffering and elastomeric-like feel) over time, for example, for up to 2 years under ambient conditions (such as 25 °C / 65% RH) and 4 weeks under accelerated conditions (such as 50 °C / 65% RH).

[0019] Preferably, the beauty composition is silicone-free. However, it may have sensory properties such as a silky feel, softness, weightlessness and / or a cushionyl feel, similar to those of a beauty composition containing silicone. In other words, the texture of the beauty composition can be similar to that of a beauty composition containing silicone.

[0020] As used herein, the term "silicone-free" means that the total content of any silicone-based components such as silicone oil, silicone elastomer and / or silicone resin in the beauty composition is less than 1% by mass, or less than 0.5% by mass or less than 0.3% by mass or less than 0.2% by mass or less than 0.1% by mass. Preferably, the silicone-free composition does not contain any silicone-based components.

[0021] The application of the composition is not limited to beauty applications such as makeup. For example, in some embodiments, the application of the beauty composition can include, but is not limited to, applications in skin care products, sunscreen products, color cosmetic products, deodorants or hair care products.

[0022] In some embodiments, the cosmetic composition can be used alone. In other words, the composition can be applied alone to the keratin surface of a subject such as a human or a substrate such as skin or hair without another composition. However, in some embodiments, the cosmetic composition can be used in combination with another composition, which can be, for example, a cosmetic or skin care composition, such as a makeup composition. For example, in certain embodiments, the cosmetic composition can be applied to the keratin surface or substrate prior to applying another composition.

[0023] Preferably, the cosmetic composition can be used as a primer, which means it can be deposited as an initial product on the keratin substrate for delivering hydration, plumping, blurring, and / or long wear effects to the keratin surface or substrate.

[0024] In some embodiments, the cosmetic composition can have one or more unique sensory properties, such as those described above. In some embodiments, the cosmetic composition can provide a weightless feel, e.g., without a heavy or sticky feeling. In some embodiments, the cosmetic composition can be long wearing. For example, the cosmetic composition can stay on the keratin surface or substrate for at least 4 hours or at least 6 hours or at least 8 hours or at least 10 hours or at least 12 hours or at least 14 hours or at least 16 hours or at least 18 hours or at least 20 hours without disrupting the aesthetics. In some embodiments, the cosmetic composition can provide a fresh / cool water effect.

[0025] In some embodiments, the cosmetic composition alone or in combination with another composition such as a cosmetic or skin care composition can be used to provide a blurring effect and make pores, wrinkles, and / or any other imperfections of the keratin surface or substrate such as skin appear less visible.

[0026] Preferably, the cosmetic composition is a non-emulsion composition, which can mean that it does not consist of an aqueous phase and an oil phase. Additionally, a non-emulsion composition may not require the use of surfactants to remain stable.

[0027] Preferably, the cosmetic composition is a gel. For example, in some embodiments, the cosmetic composition can be a soft cushioned gel having a silky and slippery texture.

[0028] In some embodiments, the cosmetic composition can have a viscosity of from about 2000 cps to about 8000 cps, from about 2500 cps to about 5000 cps, or from about 3000 cps to about 3600 cps.

[0029] In some embodiments, the cosmetic composition can have a visual appearance ranging from clear and transparent to hazy and / or milky.

[0030] In some embodiments, the cosmetic composition can contain from about 70% to about 90% water, based on the total mass (weight) of the composition, such as at least 70% by mass or at least 72% by mass or at least 74% by mass or at least 76% by mass or at least 78% by mass or at least 79% by mass of water.

[0031] In some embodiments, the at least one superabsorbent polymer can include, for example but not limited to, at least one of the superabsorbent polymers disclosed in U.S. Patent Application Publication No. US 2018 / 0221256, which is incorporated herein by reference in its entirety. As used herein, the term "superabsorbent polymer" can refer to a polymer capable of absorbing and retaining a certain amount of liquid such as water, the mass of which is significantly higher than the mass of the polymer itself. For example, a superabsorbent polymer can absorb and retain a certain amount of liquid such as water, having a mass that is at least 3 times or at least 5 times or at least 8 times or at least 12 times or at least 15 times or at least 18 times or at least 20 times the mass of the polymer itself.

[0032] In some embodiments, the at least one superabsorbent polymer can include at least one of crosslinked sodium acrylate, acrylate-grafted starch, or a mixture thereof.

[0033] In some embodiments, the at least one superabsorbent polymer can include, but not limited to, at least one superabsorbent polymer selected from sodium polyacrylate, sodium acrylate, sodium starch polyacrylate, crosslinked sodium acrylate polymer-2, or a mixture thereof. For example, in certain embodiments, the at least one superabsorbent polymer can contain crosslinked sodium acrylate polymer-2. Crosslinked sodium acrylate polymer-2 is commercially available, for example, as Aqua Keep 10SH-NFC or Barcril AV from Kobo.

[0034] The amount of the at least one superabsorbent polymer in the composition is variable. For example, it can be from about 2% by mass to about 4.5% by mass, from about 2.5% by mass to about 4.0% by mass, or from about 3% by mass to about 3.5% by mass.

[0035] In some embodiments, the composition can comprise at least one thickening agent. The at least one thickening agent can be selected from, but not limited to, natural thickening agents, synthetic thickening agents, and combinations thereof. For example, in some embodiments, the at least one thickening agent can comprise at least one natural thickening agent. And in some embodiments, the at least one thickening agent can comprise at least one synthetic thickening agent. Suitable thickening agents are disclosed in, for example, U.S. Patent Application Publication No. US 2017007512 and U.S. Patent No. 6,689,345, which are hereby incorporated by reference in their entireties. Examples of suitable thickening agents can include, but are not limited to, succinoglycan, xanthan gum, carrageenan, gellan gum, starch, hydroxyalkyl cellulose, pullulan, carbomer, sodium silicate, magnesium silicate, bentonite, acrylamide copolymer, sodium acryloyldimethyltaurate / hydroxyethyl acrylate copolymer, agar, polyurethane, and hydrophobic polyether polyurethane.

[0036] The amount of the at least one thickening agent in the composition can vary. For example, the at least one thickening agent can be present in an amount of about 0.1% to about 0.3% by mass, about 0.15% to about 0.28% by mass, or about 0.2% to about 0.25% by mass.

[0037] In some embodiments, the at least one water-soluble softening agent can comprise a microfluidized softening agent composition, i.e., a water-soluble composition of a microfluidized softening agent. The microfluidized softening agent composition is disclosed in, for example, U.S. Patent Application Publication No. US 20160081895, which is hereby incorporated by reference in its entirety.

[0038] The term "microfluidized" can refer to a fluid in which the particles can be geometrically confined to a small, typically sub-millimeter scale, at which capillary penetration can control mass transfer. In some embodiments, the particle size of the microfluidized material can be about 0.1 micrometer to 2 micrometers or about 0.2 micrometer to about 1.5 micrometers or about 0.5 micrometer to about 1 micrometer.

[0039] The term "softening agent" can refer to a substance having the ability to soften and smooth the horny surface or substrate such as skin and hair.

[0040] In some embodiments, the at least one water-soluble softening agent can include microfluidized squalane.

[0041] In some embodiments, the microfluidized softening agent composition can include a softening agent, a solvent, and a stabilizer.

[0042] In some embodiments, the softener of the microfluidized softener composition can be selected from, but not limited to, hydrocarbons, including hydrocarbons of natural origin, including saturated branched-chain hydrocarbons. Non-limiting examples of the softener of the microfluidized softener composition can be squalane, which can be produced, for example, from animal sources such as shark liver oil, vegetable oils such as olive oil or jojoba oil, or mixtures thereof; or oils, such as plant-based oils, such as jojoba oil.

[0043] In some embodiments, the solvent of the microfluidized softener composition can be selected from water, humectants, and mixtures thereof.

[0044] In some embodiments, the stabilizer of the microfluidized softener composition can be selected from surfactants, including but not limited to triglycerides, fatty acids, and carbohydrates, and mixtures thereof. Non-limiting examples of the stabilizer used can be hydrogenated lecithin.

[0045] In some embodiments, the water-soluble microfluidized softener composition can contain glycerol, which can be vegetable glycerol; water; squalane, which can be microfluidized squalane; hydrogenated lecithin; or mixtures thereof.

[0046] In some embodiments, the water-soluble microfluidized softener composition can contain glycerol, which can be vegetable glycerol; water, jojoba oil, which can be microfluidized jojoba oil; hydrogenated lecithin; or mixtures thereof.

[0047] Such water-soluble microfluidized softener compositions can be present in the cosmetic composition in an amount of about 1% to about 5% by mass, or about 2% to about 4% by mass, or about 2.5% to about 3% by mass.

[0048] An example of the water-soluble microfluidized softener composition for the composition is a softener composition containing water, (vegetable) glycerol, squalane, and hydrogenated lecithin. This composition is commercially available as Dermanet Squalane from Blue Sun International, Miami, Florida, U.S.A.

[0049] Another example of the water-soluble microfluidized softener composition used in the composition is a softener composition containing water, (vegetable) glycerol, jojoba oil, and hydrogenated lecithin. Such compositions are commercially available as Dermanet Jojoba from Blue Sun International, Miami, Florida, U.S.A.

[0050] In some embodiments, the water-soluble microfluidized softener composition can contain squalane or jojoba oil.

[0051] In some embodiments, the micronized softener present in the water-soluble fluidized softener composition may be present in an amount ranging from about 1% to about 25% by mass, or about 2% to about 20% by mass, such as about 3% to about 15% by mass, based on the mass of the water-soluble fluidized softener composition.

[0052] In some embodiments, the cosmetic composition may comprise from about 2% to about 4.5% by mass of a highly absorbent polymer, from about 1% to about 5% by mass of a fluidized softener composition, from about 0.1% to about 0.3% by mass of a thickening agent, and at least about 70% by mass of water.

[0053] For example, the cosmetic composition may comprise from about 2% to about 4.5% by mass of a highly absorbent polymer such as sodium acrylate cross-linked polymer-2, from about 0.2% to about 0.3% by mass of a thickening agent such as xanthan gum, from about 1% to about 5% by mass of a fluidized softener composition such as a fluidized squalane composition, and at least about 70% by mass of water.

[0054] In addition, the cosmetic composition may comprise one or more additional optional ingredients, such as waxes, colored pigments, esters, softeners / conditioners, preservatives, solvents, surfactants, and combinations thereof.

[0055] In some embodiments, the additional optional ingredients may be present in an amount from about 1% to about 25%, from 2% to about 20%, from 5% to 20%, or from about 10% to 20% by mass.

[0056] The embodiments described herein are further illustrated by the following working examples, but are in no way limited thereto. Examples

[0057]

[0058] Table 1 presents the ingredients of the cosmetic compositions studied and reports the results of the evaluation of the viscosity, stability, texture, and visual appearance of these compositions.

[0059] Based on Table 1, the composition of Control 6 containing squalane (non-microfluidized form) failed the stability test, and its texture, duration, and viscosity were outside the acceptable range. Additionally, Control Examples 1-3 showed that the absence of a thickening agent led to stability failure and too low viscosity. In contrast, Example 4 showed that even in the complete absence of a thickening agent, an increase in the amount of superabsorbent polymer would result in a viscosity higher than the desired level. Based on the evaluation of Controls 7-9, it was considered that the presence of both superabsorbent polymer and thickening agent might contribute to increased stability and help achieve the desired viscosity. However, a water-soluble composition without a microfluidized softening agent resulted in an unacceptable cushiony texture. Control 5 exemplified the use of all three components, namely superabsorbent polymer, water-soluble softening agent, and thickening agent, but at levels that might be outside the preferred range (as described above), allowing for the obtaining of a stable composition characterized by reduced viscosity and an incompletely desired texture. Examples 1-4 showed that by using specific levels of superabsorbent polymer, water-soluble composition of microfluidized softening agent, and thickening agent, a composition with silicone-like properties could be obtained.

[0060] Table 2

[0061]

[0062] Table 2 exemplifies how the components of an exemplary cosmetic composition are distributed between the different phases used to prepare the composition.

[0063] The composition was prepared as follows:

[0064] Phase A was prepared by adding deionized water and EDTA to a large beaker and then mixing at room temperature.

[0065] Phase B was prepared by premixing glycerin and xanthan gum. Then, this mixture was added to the large beaker.

[0066] Phase C was prepared by premixing 1,3-butanediol and Barcril AV to ensure they were well mixed. Then, this mixture was added to the large beaker, where all the components were mixed well for 10 - 15 minutes.

[0067] Phase D was prepared by adding a preservative such as phenoxyethanol to the large beaker and mixing the components well in the large beaker.

[0068] Phases A - F were mixed in a glass beaker with a HEIDON overhead stirrer and a prop mixer.

[0069] Viscosity measurements were carried out in 2-ounce glass jars under ambient conditions (25°C / 65% RH) using a Brookfield viscometer with #3 and #4 spindles.

[0070] The stability and texture of the samples stored at 50 °C for 4 weeks were visually evaluated. The following characteristics were observed:

[0071] Pass: Clear / transparent and smooth gel, silky feel, soft gel, smooth gel, cushioned feel, no separation and / or color in the composition

[0072] Fail: Water breaking through the gel, too thin (viscosity below 1500 cps), too thick (viscosity above 8500 cps), separation observed and color / transparency becoming hazy and milky

[0073] Although the foregoing relates to particularly preferred embodiments, it should be understood that the present invention is not limited thereto. Those of ordinary skill in the art will appreciate that various modifications can be made to the disclosed embodiments, and such modifications are intended to fall within the scope of the present invention.

[0074] All publications, patent applications, and patents cited in this specification are hereby incorporated by reference in their entirety.

Claims

1. A beauty composition, comprising: 2% to 4.5% by mass of sodium acrylate cross - polymer - 2; 1% to 5% by mass of a water - soluble microfluidized softening agent composition; and 0.1% to 0.3% by mass of xanthan gum; wherein the water - soluble microfluidized softening agent composition comprises glycerol, water, microfluidized squalane, and hydrogenated lecithin, the beauty composition has a viscosity of 2500 cps to 5000 cps, and the beauty composition comprises at least 70% by mass of water.

2. The beauty composition according to claim 1, which is a silicone - free composition.

3. The beauty composition according to claim 1 or 2, which is a non - emulsion.

4. The beauty composition according to claim 1 or 2, which is a gel.

5. The beauty composition according to claim 1, comprising 4% by mass of sodium acrylate cross - polymer - 2, 0.2% to 0.3% by mass of xanthan gum, 1% to 5% by mass of a water - soluble microfluidized softening agent composition, and at least 70% by mass of water.

6. A beauty method, comprising applying the beauty composition according to any one of claims 1 - 5 to a horny surface.

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