FR3135207A1 - COSMETIC COMPOSITIONS BASED ON SILICONE/HYDROCARBON - Google Patents

Abstract

COSMETIC COMPOSITIONS BASED ON SILICONE/HYDROCARBON The cosmetic compositions of the invention may include a first phase which includes at least approximately 8% by weight of the composition of a thermoplastic block copolymer comprising styrene blocks, and at least one hydrocarbon oil, and a second phase that includes at least 20% by weight of the composition of a dimethicone. To provide the necessary stability to these systems, the compositions use both a hectorite and a silica silylate, the hectorite being disteardimonium hectorite, stearalkonium hectorite, or both. Figure for abstract: Figure 1

Description

COSMETIC COMPOSITIONS BASED ON SILICONE/HYDROCARBON

The present disclosure relates to cosmetic compositions, and in particular to silicone/hydrocarbon lip cosmetic compositions which also contain a styrenic block copolymer.

CONTEXT

Styrenic block copolymer (SBC)/silicone systems are commonly used in conventional lip gloss products. Due to the nature of SBC chemistry, usage levels are low to maintain good application and reduce tack. Increasing usage levels results in SBC/silicone systems that do not settle at elevated temperatures, resulting in syneresis of the silicone and sedimentation of any pigments, fillers or beading agents.

Thus, a cosmetic system that allows increased utilization levels of a SBC while maintaining stability and preventing syneresis and/or sedimentation is useful and desirable.

SHORT SUMMARY

The present invention discloses a composition which provides such improved stability. Cosmetic compositions, such as those intended to be applied to the lips, may include a first phase which includes at least about 8% by weight of a thermoplastic block copolymer comprising styrene blocks, and at least one hydrocarbon oil. The composition may include a second phase that includes at least 20% of a viscous silicone such as a dimethicone. To provide the stability necessary for these systems, the compositions utilize a filler that includes both a hectorite and a silica silylate, where the hectorite is disteardimonium hectorite, stearalkonium hectorite, or both.

In some embodiments, the dimethicone may include a plurality of dimethicones. In some embodiments, the plurality of dimethicones may include a first dimethicone having a molecular weight less than 1500 g/mole (such as cetyl-dimethicone, with a molecular weight of 1000 g/mole), and a second dimethicone having a molecular weight greater than 2000 g/mole (such as trimethylsiloxyphenyl dimethicone with a molecular weight of 3000 g/mole). In some embodiments, the first dimethicone may be present at less than 10% by weight of the composition, and a second dimethicone is present at more than 15% by weight of the composition. In some embodiments, the weighted average molecular weights of the plurality of dimethicones are at least 7000 g/mol. In some embodiments, the dimethicone may include a first dimethicone that is a polyalkyldimethicone, and a second dimethicone that contains at least one aryl group.

In some embodiments, the thermoplastic block copolymer may be present in an amount of at least 10% by weight of the composition.

In some embodiments, the composition may include at least 0.5% by weight of hectorite. In some preferred embodiments, the composition may include at least 1% by weight of hectorite. In some more preferred embodiments, the composition may include 1.5% to 2.5% by weight of the hectorite.

In some embodiments, the hydrocarbon oil comprises a saturated or unsaturated polyolefin, such as hydrogenated polyisobutene.

In some embodiments, the composition may include a pigment, a beading agent, or a combination thereof. In some embodiments, the composition may include a thickener, an olfactory sensory agent, a solvent, a preservative, a butter, an ester, or a combination thereof. In some embodiments, the composition may include a fatty compound having a melting point in the range of 30°C to 50°C, such as Butyrospermum Parkii (Shea) butter and/or Bis-diglyceryl polyacyladipate-2 .

In some embodiments, a storage modulus at a temperature of 55°C divided by a storage modulus at a temperature of 25°C is greater than or equal to 0.08.

In some embodiments, the ratio between the amount of hectorite and the amount of silica silylate is between 0.25:1 and 1:1.

In some embodiments, a method is disclosed for providing a high gloss, low tack lip composition. The method includes forming a dual phase product on the lips from a single product by applying a composition according to claim 1 and fragmenting the composition so that it forms a first layer comprising the thermoplastic block copolymer in contact with the lips and a second layer including dimethicone on top of the first layer.

There is a representation of a composition seen under a microscope.

There is a graph illustrating the storage modulus values for two different compositions at different temperatures.

There is a graph illustrating the storage modulus values for eight different compositions at different temperatures.

There is an exaggerated illustration of a subject's lips with the first phase and second phase applied in separate layers.

DETAILED DESCRIPTION

In this document, the terms “comprising”, “having” and “including” are used in their open and non-limiting sense.

The terms “un”, “une” “le” and “la” are understood to encompass the plural as well as the singular. Thus, the expression “a mixture of these” also refers to “mixtures of these”. Throughout the disclosure, the expression "a mixture thereof" is used, after a list of elements as shown in the following example where the letters A through F represent the elements: "one or more elements selected from the group consisting of A, B, C, D, E, F, and a mixture thereof. The phrase "a mixture thereof" does not require that the mixture include all elements A, B, C, D, E and F (although all elements A, B, C, D, E and F may be included). Rather, it indicates that a mixture of two or more of elements A, B, C, D, E and F can be included. In other words, it is equivalent to the expression "one or more elements selected from the group consisting of A, B, C, D, E, F, and a mixture of any two or more of A, B, C , D, E and F”.

The expression “one or more” means “at least one” and therefore includes individual components as well as mixtures/combinations.

The term "free" or "completely free from (a component)" as defined herein means that the systems or compositions do not contain the component to any degree measurable by standard means.

The term "substantially free from (a component)" as defined herein means that the systems or compositions contain no appreciable amount of the component, for example, not more than about 1% by weight, or not more than 'about 0.5% by weight, or not more than about 0.3% by weight, such as not more than about 0.1% by weight, based on the weight of the system or composition comprising the system and/or the oxidizing composition according to the embodiments of the disclosure.

with the exception of operating examples, or when otherwise indicated, all numbers expressing the quantities of ingredients and/or the reaction conditions may be modified in all cases by the term "approximately", i.e. i.e. within +/-5% of the number indicated.

In this document, all ranges provided are intended to include all specific ranges within the given ranges, as well as combinations of subranges in between. So a range of 1 to 5 specifically includes 1, 2, 3, 4, and 5, as well as subranges such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc.

All components and elements positively set forth in this disclosure may be negatively excluded from the claims. In other words, the cosmetic compositions of the present disclosure may be free or substantially free of all components and elements positively cited in the present disclosure.

The present invention discloses a cosmetic composition, which may be a composition intended to be applied to the lips. The composition may include a first phase that includes: (1) at least about 8% by weight of the composition of a thermoplastic block copolymer comprising styrene blocks; and (2) at least one hydrocarbon oil. The composition may include a second phase that contains at least 20% by weight of the composition of a viscous silicone, which may be a dimethicone. The composition may include a filler, where the filler includes both a hectorite and a silica silylate.

In certain embodiments, these compositions are in the form of a gel.

Preferably, these compositions may be free of water. In some embodiments, these compositions may be substantially free of water.

Preferably, these compositions may be free of emulsifier. In some embodiments, these compositions may be substantially free of emulsifier.

Referring briefly to the , we can see a simplified illustration of the composition. On the , the composition 100 is seen as comprising a first phase 110, an oily phase containing a thermoplastic block copolymer comprising a styrene block and a hydrocarbon oil. The composition also includes a second phase 120 which includes silicones. The second phase is dispersed in/encapsulated by the first phase. It can be seen that the second phase does not form spherical droplets as one would expect, for example, in a water-in-oil emulsion. These droplets are rather perceived as discrete and non-spherical volumes contained in the first phase when observed under a microscope. The filler 130 is present to stabilize the composition, and other components, including, for example, particles 140 such as pigments, may be present.

Thermoplastic block copolymer comprising styr blocks aeneas

In some embodiments, the composition may include one or more thermoplastic block copolymers comprising styrene blocks. In some embodiments, the one or more thermoplastic block copolymers may consist of a single thermoplastic block copolymer. In some embodiments, the one or more thermoplastic block copolymers may consist of a plurality of thermoplastic block copolymers.

The block copolymers of the present invention are characterized by the presence of at least one “hard” segment and at least one “soft” segment. Apart from their compositional nature, the hard and soft segments of the block copolymers of the present invention can be defined in terms of their respective glass transition temperatures, T _g . The hard segment may have a T _g of 50°C or more, while the soft segment may have a T _g of 20°C or less. The T _g of the hard sequence can range from 50°C to 150°C. The Tg of the soft sequence can range from -150°C to 20°C.

Block copolymers useful in the compositions of the present invention may be thermoplastic elastomers. The hard segments of the thermoplastic elastomer typically include vinyl monomers in varying amounts. Examples of suitable vinyl monomers include, but are not limited to, styrene as well as other optional monomers including methacrylate, acrylate, vinyl ester, vinyl ether, vinyl acetate, and similar.

The soft segments of the thermoplastic elastomer include olefin polymers and/or copolymers which may be saturated, unsaturated, or combinations thereof. Suitable olefin copolymers may include, but are not limited to, ethylene/propylene copolymers, ethylene/butylene copolymers, propylene/butylene copolymers, polybutylene, polyisoprene, butane polymers and hydrogenated isoprenes, and mixtures thereof.

Thermoplastic elastomers useful in the present invention are block copolymers, for example diblock, triblock, multiblock, radial and star block copolymers, and mixtures thereof. A diblock thermoplastic elastomer is generally defined as type A-B or a hard segment (A) followed by a soft segment (B) in sequence. A triblock is generally defined as an A-B-A copolymer or a ratio of a hard segment, a soft segment, and a hard segment. Multiblock or radial block or star block thermoplastic elastomers usually contain any combination of hard and soft segments, provided that the elastomers have both hard and soft characteristics.

In some embodiments, the thermoplastic elastomer of the present invention may be selected from the KRATON (Kraton Corporation of Houston, Textile) class of rubbers or similar thermoplastic elastomers. KRATON rubbers are thermoplastic elastomers in which the polymer chains have a diblock, triblock, multiblock or radial or star block configuration or numerous mixtures thereof. KRATON triblock rubbers have (hard) polystyrene segments at each end of a (soft) rubber segment, while KRATON diblock rubbers have a (hard) polystyrene segment attached to a (soft) rubber segment. The radial or star configuration of KRATON can be a four-point star or other multi-point rubber star, with a polystyrene segment attached to each end of a rubber segment. The configuration of each of the KRATON rubbers forms separate domains of polystyrene and rubber.

Each KRATON rubber molecule is said to comprise sequenced segments of styrene monomer units and rubber monomer and/or comonomer units. The most common structure for KRATON triblock copolymer is the linear block type A-B-A: styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylenepropylene-styrene or styrene-ethylenebutylene-styrene. The KRATON diblock is preferably of the AB block type such as styrene-ethylenepropylene, styrene-ethylenebutylene, styrene-butadiene, or styrene-isoprene. The configuration of KRATON rubber is well known in the art and any block copolymer elastomer having a similar configuration is within the scope of the invention. Other block copolymers are sold under the Septon brand (which represent elastomers known as SEEPS, sold by Kurary, Co., Ltd) and those sold by ExxonMobil Chemical under the VECTOR brand.

Other thermoplastic elastomers useful in the present invention include block copolymer elastomers comprising a styrene-butylene/ethylene-styrene copolymer (triblock), an ethylene/propylene-styrene copolymer (radial or star block), or a mixture of both. (Some manufacturers refer to block copolymers as hydrogenated block copolymers, e.g. hydrogenated styrene-butylene/ethylene-styrene (triblock) copolymer).

The compositions of the present invention include at least one block copolymer, for example diblock, triblock, multiblock or radial block copolymers, and mixtures thereof. The at least one block copolymer comprises at least one styrene block and may further comprise at least one block comprising units chosen from butadiene, ethylene, propylene, butylene and isoprene or a mixture thereof .

The diblock copolymers which may be mentioned include, but are not limited to, styrene/ethylene-propylene copolymers (comprising a styrene block and a block obtained from ethylene and propylene), styrene/ethylene-butylene copolymers, styrene-ethylene/butadiene copolymers, styrene/butadiene copolymers and styrene/isoprene copolymers.

In some notable embodiments, the block copolymer includes styrene blocks and one or more blocks selected from: butadiene blocks, isoprene blocks and ethylene-butylene blocks. In other embodiments, the block copolymer includes (1) styrene blocks and butadiene blocks; or (2) styrene blocks and ethylene-butadiene blocks; or (3) styrene and isoprene blocks.

Triblock copolymers which may be mentioned include, but are not limited to, styrene/ethylene-propylene/styrene copolymers, styrene/ethylene-butylene/styrene copolymers, styrene/ethylene-butadiene/styrene copolymers, styrene/isoprene/styrene and styrene/butadiene/styrene copolymers. For example, triblock polymers sold under the names KRATON G1650, KRATON G1652, KRATON D1101, KRATON D1102 and KRATON, commercially available from the company Kraton Polymers.

For example, a mixture of a diblock copolymer and a triblock copolymer can be used as a block copolymer. According to at least one embodiment, the diblock copolymer and the triblock copolymer can be chosen from block copolymers comprising at least one styrene block and at least one block comprising units chosen from butadiene, ethylene, propylene, butylene and isoprene. In one embodiment, the block copolymer comprises from about 50% to about 90% trisequences and from about 10% to about 50% diblocks.

Examples of suitable block copolymers include Kraton's G series, such as Kraton G1701 (INCI name hydrogenated styrene/isoprene copolymer) and KRATON G1657 (HYDROGENATED STYRENE/BUTADIENE COPOLYMER). KRATON G1657 (styrene-ethylene/butylene-styrene trisequence and styrene-ethylene-butylene diblock at 30%); INCI: HYDROGENATED STYRENE/BUTADIENE COPOLYMER; a mixture of 70% styrene-ethylene-butylene trisequence) is particularly notable.

It is preferable that the styrene content of the block copolymer is less than 30% by weight, preferably less than 25% by weight, and more preferably less than 20% by weight, and more preferably from about 5% to about 15%. , relative to the weight of the block copolymer. This is due to the tendency of block copolymers with styrene content above 30 wt% to harden/freeze in conventional support systems.

In certain embodiments, the thermoplastic block copolymer(s) comprising styrene blocks may be present in the cosmetic composition in a total amount ranging, for example, from approximately 8% to approximately 30% by weight; such as from about 9% to about 25% by weight; or as from about 10% to about 20%, based on the weight of the composition.

In some embodiments, the thermoplastic block copolymer is present in the first phase in an amount of at least 10% by weight of the composition.

Hydrocarbon oil

In some embodiments, the composition may include one or more hydrocarbon oils. In some embodiments, the composition may include a plurality of hydrocarbon oils. In some embodiments, each hydrocarbon oil is a non-volatile oil.

By “hydrocarbon oil” is meant an oil comprising mainly carbon and hydrogen atoms, and optionally ester, ether, fluoro, carboxylic acid and/or alcohol groups. In some embodiments, the hydrocarbon oil contains only carbon and hydrogen atoms.

By “non-volatile oil” is meant an oil which remains on the skin or on a keratinous fiber at room temperature (20 to 25°C) and at atmospheric pressure for at least several hours, and which in particular has a vapor pressure less than 10 ^-3 mmHg (0.13 Pa).

We can cite, as examples of non-volatile hydrocarbon oils which can be used in the invention, the following oils:

hydrocarbon oils of plant origin, such as triglycerides of fatty acids having 4 to 24 carbon atoms, such as triglycerides of caprylic/capric acids, such as those sold by Stearinerie Dubois or those sold under the names of Miglyol 810®, 812® and 818® by Dynamit Nobel; triglycerides of C18-C36 branched fatty acids and glycerol, such as those sold under the name DUB TGI 24® by Stéarinerie Dubois (INCI name C18-36 Acid Triglyceride);

linear or branched hydrocarbons of mineral or synthetic origin, such as liquid paraffins and their derivatives, petrolatum, polydecenes, polybutenes, hydrogenated polyisobutene, such as Parleam, squalane;

synthetic ethers having 10 to 40 carbon atoms, such as dicaprylyl ether;

synthetic esters, in particular of fatty acids: isononyl isononanoate, isopropyl myristate, isopropyl palmitate, C ₁₂ to C ₁₅ alkyl benzoate, hexyl laurate, diisopropyl adipate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, isostearyl isostearate, diisostearyl malate or tridecyl trimellitate;

fatty alcohols that are liquid at room temperature, comprising a branched and/or unsaturated carbon chain having 12 to 26 carbon atoms, such as octyldodecanol, isostearyl alcohol, 2-butyloctanol, 2-hexyldecanol, 2- undecylpentadecanol or oleyl alcohol;

higher fatty acids, such as oleic acid, linoleic acid or linolenic acid;

carbonates, such as dicaprylyl carbonate or propylene carbonate;

acetates; And

citrates.

In some embodiments, the hydrocarbon oil comprises a saturated or unsaturated polyolefin. In some embodiments, the saturated or unsaturated polyolefin is a hydrogenated polyisobutene.

In certain embodiments, the hydrocarbon oil(s) may be present in the cosmetic composition in a total amount ranging, for example, from approximately 5% to approximately 70% by weight; such as from about 10% to about 60% by weight; or as from about 20% to about 50%, based on the weight of the composition.

In some embodiments, the hydrocarbon oil(s) may include at least one non-polar oil and at least one polar oil.

Non-polar oil

In some embodiments, the nonpolar oil has a partition coefficient (log P) value greater than 15, such as greater than about 20. In some other embodiments, the nonpolar oil is selected from an alkane , an olefin (alkene) such as a polyolefin, and combinations thereof. Suitable alkanes include, for example, C ₁₀ -C ₂₀ alkanes, such as C ₁₂ -C ₁₆ alkanes such as isohexadecane or isododecane; or isoparaffins.

In some embodiments, the nonpolar oil is an olefin such as a polyolefin. Suitable polyolefins include oligomeric or polymeric compounds such as squalene, hydrogenated polyisobutene, hydrogenated polydecene, hydrogenated poly(6-14)olefin and polybutene.

In some embodiments, the nonpolar oil may be present at a total concentration by weight of about 5%, 10%, 15%, 20%, 25%, 30% or 35% to about 50%, 55% , 65% or 70% by weight.

Polar oils

In some embodiments, the polar oil has a partition coefficient (log P) value less than or equal to about 20, such as less than about 17, such as less than about 15.

In some embodiments, the polar oil may have a molecular weight less than about 650 g/mol, such as less than about 500 g/mol, such as from about 150 g/mol to about 650 g/mol, such as from about 150 g/mol to about 500 g/mol. These materials may sometimes be called "medium molecular weight polar oils."

In some embodiments, the at least one polar oil may be a fatty ester. Suitable fatty esters include vegetable oils (glycerol esters of fatty acids, monoglycerides, diglycerides, triglycerides) and synthetic esters.

Specific non-limiting examples of polar oils include, without limitation, isodecyl neopentanoate (logP = 6.00), diethylhexyl malate (logP = 6.61); isopropyl myristate (logP = 7.43); isopropyl palmitate (logP = 8.49); tricaprylin (logP=9.33); isopropyl isostearate (logP=9.37); isostearyl neopentanoate (logP = 10.25); octyldodecyl neopentanoate (logP = 11.32); ethylhexyl palmitate (logP = 11.34); ethylhexyl stearate (logP = 12.40) and cetyl palmitate (logP = 15.59); tridecyl trimellitate (logP = 16.54); and diisostearyl malate (logP = 16.87). Other examples include propylene carbonate.

In some embodiments, the polar oil may be present in the composition at a total concentration of about 1%, 2%, 3%, 5% or 10%, to about 15%, 25%, 30% or 50%. % in weight.

In some embodiments, the at least one nonpolar oil and the at least one polar oil having a molecular weight less than 650 g/mol must be present at weight concentrations such that a ratio between the weight concentration of the at least one non-polar oil and the concentration by weight of the at least one polar oil having a molecular weight less than 650 g/mol is at least about 1:1. In some embodiments, this ratio is from about 1:1, 2:1, 3:1, 4:1 or 5:1 to about 6:1, 7:1, 8:1, 9:1, 10 :1, 11:1, 12:1, 13:1 or 14:1. In some notable embodiments, this ratio is from about 1:1 to about 14:1. In some other embodiments, this ratio is from about 3:1 to about 14:1.

Viscous silicones

In some embodiments, the composition may include a viscous silicone, which may include or consist of one or more dimethicones. In some embodiments, the composition may include a dimethicone. In some embodiments, the composition may include a plurality of dimethicones.

The silicones are preferably non-volatile silicones. In some embodiments, these silicones have a viscosity range from approximately over 5 to 800,000 cSt, such as 20 to 200,000 cSt at 25°C. Examples of non-volatile silicones include phenyl trimethicone, or trimethylsiloxyphenyl dimethicone. Other examples include alkyl dimethicones such as cetyl dimethicone. Phenyl trimethicone can be purchased from Dow Corning Corporation under the brand name 556 Fluid. Trimethylsiloxyphenyl dimethicone can be purchased from Wacker under the brand name PDM-1000. Cetyldimethicone, also called liquid silicone wax, can be purchased from Dow Corning under the name Fluid 2502, or from Evonik DeGussa under the brand names Abil Wax 9801 or 9814.

In some embodiments, the weighted average molecular weights of the plurality of dimethicones may be at least 1500 g/mol. In some embodiments, the weighted average molecular weights of the plurality of dimethicones are from 1000, 1500 or 2000 up to 3000, 4000, 5000, 6000, 7000, 8000, 9000 , 10,000 or 20,000 g/mol, including all combinations and subranges thereof. In a preferred embodiment, the weighted average of the molecular weights of the plurality of dimethicones is between 2000 and 3000 g/mol.

In some embodiments, the dimethicones may include a first dimethicone having a molecular weight less than 1500 g/mol (such as cetyldimethicone), and a second dimethicone having a molecular weight greater than 2000 g/mol (such as cetyldimethicone). trimethylsiloxyphenyl dimethicone).

In some embodiments, the dimethicones may include a first dimethicone present at less than 10%, and a second dimethicone present at greater than 15%.

In some embodiments, the dimethicones may include a first dimethicone that is a polyalkyl dimethicone, and a second dimethicone that contains at least one aryl group.

In some embodiments, the dimethicone(s) may be present in the cosmetic composition in a total amount ranging, for example, from about 20%, 22% or 25% to about 30%, 35% or 40% by weight of the composition.

In some embodiments, the composition is free, or substantially free, of all other silicones.

Charges

The composition must include a plurality of fillers, and in particular, must include both a hectorite and a silica silylate. Without being held to a specific theory, it is believed that the combination of these specific hectorites with silica silylate results in the unexpected stabilization of these thermoplastic/silicone block copolymer systems.

The ratio of hectorite to silica silylate can vary, but the concentrations are typically of the same order of magnitude. In some embodiments, the ratio of the amount of silica silylate (in wt%) to hectorite (in wt%) may be from 4:1 to 1:1. In some embodiments, the ratio is 3:1 to 1:1, 2:1, 1.5:1 or 1.25:1. In some preferred embodiments, the ratio is 1:1.

In some embodiments, the total amount of hectorite plus silica silylate represents at least 10% of the total amount of viscous silicone in the system. In some embodiments, the total amount of hectorite plus silica silylate represents at least 12% of the total amount of viscous silicone in the system. In some embodiments, the total amount of hectorite plus silica silylate represents at least 15% of the total amount of viscous silicone in the system.

Hectorite

In some embodiments, the composition may include a hectorite, such as an ammonium hectorite compound. The hectorite must be chosen from disteardimonium hectorite, stearalkonium hectorite, or both. In some embodiments, only one hectorite is present. In some embodiments, both hectorites are present.

In certain embodiments, the hectorite is present in the composition in a total amount of at least 0.5% by weight of the composition, preferably at least 1% by weight, and more preferably at least 2% by weight. In some embodiments, hectorite is present in the composition in a total amount of up to 2%, 2.5%, 3%, 3.5%, 4% or 5% by weight of the composition. In some embodiments, hectorite is present in the composition in a total amount of 1.5% to 2.5% by weight of the composition.

Silica silylate

In some embodiments, the composition may include a silica silylate. In some embodiments, the silica silylate is silylated silica airgel particles (INCI name: silica silylate), which are hydrophobic silica airgel particles. Silica aerogels are porous materials obtained by replacing (by drying) the liquid component of a silica gel with air. The preparation of surface-modified hydrophobic silica airgel particles by silylation is described in more detail in U.S. Patent ^No. 7,470,725, incorporated by reference herein.

In some embodiments, hydrophobic silica airgel particles surface modified with trimethylsilyl groups may be chosen. For example, we can choose the airgel sold under the name VM-2260® by the company Dow Corning, whose particles have an average size of approximately 1,000 microns and a specific surface area per unit of weight ranging from 600 to 800 m ² /g, or the airgel sold under the name VM-2270®, also by the company Dow Corning, whose particles have an average size ranging from 5 to 15 microns and a specific surface area per unit weight ranging from 600 at 800 m ² /g.

In certain embodiments, the silica silylate is present in the composition in a total amount of at least 0.5% by weight of the composition, preferably at least 1% by weight, and more preferably at least 1% by weight. minus 2% by weight. In some embodiments, hectorite is present in the composition in a total amount of up to 2%, 2.5%, 3%, 3.5%, 4% or 5% by weight of the composition.

In some embodiments, the silica silylate is present in the composition in a total amount of 1.5% to 2.5% by weight of the composition.

Other components

The compositions may include other components. In some embodiments, the compositions may include a tackifier. In some embodiments, the compositions may include a thickening agent ("thickener"), an olfactory sensory agent, a solvent, a preservative, an antioxidant, a butter, an ester, or a combination thereof. In some embodiments, the compositions may include a pigment, a beading agent, or a combination thereof. In some embodiments, the composition may include a fatty compound having a melting point in the range of 30°C to 50°C.

In some embodiments, the composition may comprise or consist of a thermoplastic block copolymer, a hydrocarbon oil, a dimethicone, a hectorite, a silica silylate, a tackifier, a thickener, an olfactory sensory agent, a solvent, a preservative , an antioxidant, a fatty compound having a melting point in the range of 30°C to 50°C, a colorant (such as a pigment or pearling agent), or a combination thereof, and may be exempt or substantially free from all other materials.

Sticky agent

In some embodiments, the composition may include a “tackifying” resin, called a tackifier. Such resins are described in particular in the Handbook of Pressure Sensitive Adhesive, edited by Donatas Satas, ^3rd edition, 1989, pages 609 to 619. The resin of the composition according to the invention is chosen from rosin, rosin derivatives , hydrocarbon resins and mixtures thereof. Preferably, the resin is an indene hydrocarbon resin which may optionally be hydrogenated.

Rosin is a mixture comprising mainly organic acids called resin acids (mainly abietic and pimaric type acids). There are three types of rosin: rosin ("gum rosin") obtained by incision on living trees, wood rosin, which is extracted from pine stumps or wood, and tall oil (oil rosin pine), which is obtained from a by-product from paper manufacturing.

Rosin derivatives can result in particular from the polymerization, hydrogenation and/or esterification (for example with polyalcohols, such as ethylene glycol, glycerol or pentaerythritol) of resin acids. We can cite, for example, the rosin esters sold under the references Foral 85, Pentalyn H and Staybelite Ester 10 by Hercules; Sylvatac 95 and Zonester 85 by Arizona Chemical; or Unitez 3013 by Union Camp.

Hydrocarbon resins are chosen from low molecular weight polymers which can be classified, according to the type of monomer they contain, into:

indene hydrocarbon resins, such as in particular the resins resulting from the polymerization predominantly of indene monomer with a minor proportion of monomer chosen from styrene, methylindene, methylstyrene and mixtures thereof, these resins optionally being able to be hydrogenated. These resins can have a molecular weight ranging from 290 to 1150 g/mol. Examples of indene resins include those sold under the references Escorez 7105 by Exxon Chem, Nevchem 100 and Nevex 100 by Neville Chem, Norsolene S105 by Sartomer, Picco 6100 by Hercules and Resinall by Resinall Corp, or copolymers Hydrogenated indene/methylstyrene/styrene sold under the name "Regalite" by Eastman Chemical, in particular Regalite R 1100, Regalite R 1090, Regalite R-7100, Regalite R1010 Hydrocarbon Resin or Regalite R1125 Hydrocarbon Resin.

In some embodiments, the tackifier may be present in a total amount of from 1%, 3% or 5% to about 10%, 12% or 15% by weight of the composition.

Thickening

The composition may include a thickening/structuring agent for the oily phase chosen from polymers. In certain embodiments, the thickener may be a C ₁₀ to C ₃₀ and preferably C ₁₄ to C ₂₂ alkyl (meth)acrylate homopolymer; and more particularly a homopolymer of poly(stearyl acrylate) or poly(behenyl acrylate), such as those marketed under the brands Intelimer® IPA 13-1 NG polymer, Intelimer® IPA 13-6 by the company Air Product and Chemicals (INCI name: POLY C10-30 ALKYL ACRYLATE). Poly(stearyl acrylate) homopolymers will preferably be used.

In some embodiments, the thickener may be present in a total amount of 0.1%, 0.25% or 0.4% to 0.6%, 0.75%, 1% or 2% by weight of the composition.

Olfactory sensory agent

In some embodiments, the compositions may include an olfactory sensory agent, such as a perfume or flavoring agent. In some embodiments, the olfactory sensory agent may include a cooling agent, such as menthol and its derivatives, which are capable of providing, for example, a feeling or sensation of "refreshment" or "cooling."

In some embodiments, the olfactory sensory agent may be present in a total amount of from 0.1%, 0.25% or 0.4% to 0.6%, 0.75%, 1% or 2% in weight of the composition.

Solvent

In some embodiments, the composition may include a solvent in addition to the hydrocarbon oils. In some embodiments, the solvent is soluble in hydrocarbon oils. In some embodiments, the solvent may include or consist of glycerin, ethylhexylglycerin and/or pentaerythrityl tetraisostearate.

In some embodiments, the solvent may be present in a total amount of 0.1%, 0.25% or 0.4% to 0.6%, 0.75%, 1% or 2% by weight of the composition.

Preservative and antioxidants

In some embodiments, the composition may include a preservative and/or an antioxidant.

In some embodiments, the preservative may be present in a total amount of 0.1%, 0.25% or 0.4% to 0.6%, 0.75%, 1% or 2% by weight of the composition. In some embodiments, the antioxidant may be present in a total amount of less than 2%, less than 1%, less than 0.5%, less than 0.25% or less than 0.1% by weight of the composition.

Low melting point butters and fatty compounds

In some embodiments, the composition may include a butter. Non-limiting examples of these butters include mango butter, such as that sold under the reference Lipex 203 by AarhusKarlshamn; shea butter, in particular that having the INCI name Butyrospermum Parkii Butter, such as that sold under the reference Sheasoft® by AarhusKarlshamn; cocoa butter, in particular that which is sold under the name CT Cocoa Butter Deodorized by Dutch Cocoa BV or that which is sold under the name Beurre De Cacao NCB HD703 758 by Barry Callebaut; shorea butter, in particular that which is sold under the name Dub Shorea T by Stearinerie Dubois; and their mixtures. In some embodiments, the butter may be present in a total amount of 3%, 4%, 5%, 6%, 7%, 8% or 10% to 5%, 8%, 10%, 15%, 20 % or 30% by weight of the composition.

In some embodiments, the composition may include a fatty compound having a melting point in the range of 30°C to 50°C. These fatty compounds may include a butter (e.g., shea butter) or an ester, such as a glycerol oligomeric ester. The glycerol oligomer esters can be chosen from diglycerol esters, in particular adipic acid and glycerol condensates, for which part of the hydroxyl groups of the glycerols has reacted with a mixture of fatty acids such as stearic, capric, stearic and isostearic acid and 12-hydroxystearic acid, preferably such as bis-diglyceryl polyacyladipate-2, for example sold under the brand Softisan 649 by Sasol.

In some embodiments, the fatty compound having a melting point in the range of 30°C to 50°C may be present in a total amount of 8%, 10%, 12%, or 14% to 15%, 17 %, 20%, 25% or 30%, by weight of the composition.

Dyes

In some embodiments, the composition may include a colorant. In some embodiments, the colorant is a pigment, a pearling agent, or a combination thereof,

In certain embodiments, the composition may advantageously comprise at least one dye chosen from pigments and/or pearling agents.

Pigments

In the present document, the term "pigment" designates white or colored particles, inorganic (mineral) or organic, which are insoluble in the lipophilic phase(s), and which are intended to color and/or opacify the composition and/or the deposited layer produced with the composition.

The pigments can be chosen from mineral pigments, organic pigments and composite pigments (i.e. pigments based on mineral and/or organic materials).

The pigments can be chosen from mineral pigments, in particular monochromatic pigments, organic lacquers, pearling agents and goniochromatic pigments.

If the composition includes them, their content varies from 0.1% to 15% by weight, relative to the weight of the composition, and preferably from 0.5% to 12% by weight, relative to the weight of the composition.

The mineral pigments can be chosen from metal oxide pigments, chromium oxides, iron oxides (black, yellow, red), titanium dioxide, zinc oxides, cerium oxides, zirconium oxides. , chromium hydrate, manganese violet, Prussian blue, ultramarine blue, ferric blue, metal powders, such as aluminum powders or copper powder, and mixtures thereof.

Organic lacquers are organic pigments, formed from a color fixed on a substrate. Lacquers, also called organic pigments, can be chosen from the materials below and their mixtures:

cochineal carmine;

organic pigments of azo tints, anthraquinone tints, indigoid tints, xanthenic tints, pyrene tints, quinoline tints, triphenylmethane tints or fluorinated tints.

We can in particular cite, among the organic pigments, those known under the following names: D&C Blue ^no . 4, D&C Brown ^no . 1, D&C Green ^no . 5, D&C Green ^no . 6, D&C Orange ^no. 4, D&C Orange ^# 5, D&C Orange ^# 10, D&C Orange ^# 11, D&C Red ^# 6, D&C Red ^# 7, D&C Red ^# 7, D&C Red ^# 21, D&C Red ^# 22, D&C Red ^# 27, D&C Red ^No. 28, D&C Red ^No. 30, D&C Red ^No. 31, D&C Red ^No. 33, D&C Red ^No. 34, D&C Red ^No. 36, D&C Violet ^No. 2, D&C Yellow ^No. 7, D&C Yellow ^No. 8, D&C Yellow ^No. 10, D&C Yellow ^No. 11, FD&C Blue ^No. 1, FD&C Green ^No. 3, FD&C Red ^No. 40, FD&C Yellow ^No. 5 or FD&C Yellow ^No. 6;

the organic lacquers may be insoluble salts of sodium, potassium, calcium, barium, aluminum, zirconium, strontium or titanium of acidic shades, such as azo, anthraquinone, indigoid, xanthenic, pyrenic, quinolinic, triphenylmethane or fluoranic, these colors may contain at least one carboxylic or sulfonic acid group.

Organic lacquers can also be supported by an organic carrier, such as rosin or aluminum benzoate, for example.

We can in particular cite, among organic lacquers, those known under the following names: D&C Red No. 2 Aluminum lake, D&C Red No. 3 Aluminum lake, D&C Red No. 4 Aluminum lake, D&C Red No. 6 Aluminum lake, D&C Red No. 6 Barium lake, D&C Red No. 6 Barium/Strontium lake, D&C Red No. 6 Strontium lake, D&C Red No. 6 Potassium lake, D&C Red No. 7 Aluminum lake, D&C Red No. 7 Barium lake, D&C Red No. 7 Calcium lake, D&C Red No. 7 Calcium/Strontium lake, D&C Red No. 7 Zirconium lake, D&C Red No. 8 Sodium lake, D&C Red No. 9 Aluminum lake, D&C Red No. 9 Barium lake, D&C Red No. 9 Barium/Strontium lake, D&C Red No. 9 Zirconium lake, D&C Red No. 10 Sodium lake, D&C Red No. 19 Aluminum lake, D&C Red No. 19 Barium lake, D&C Red No. 19 Zirconium lake, D&C Red No. 21 Aluminum lake, D&C Red No. 21 Zirconium lake, D&C Red No. 22 Aluminum lake, D&C Red No. 27 Aluminum lake, D&C Red No. 27 Aluminum/Titanium/Zirconium lake, D&C Red No. 27 Barium lake, D&C Red No. 27 Calcium lake, D&C Red No. 27 Zirconium lake, D&C Red No. 28 Aluminum lake, D&C Red No. 30 lake, D&C Red No. 31 Calcium lake, D&C Red No. 33 Aluminum lake, D&C Red No. 34 Calcium lake, D&C Red No. 36 lake, D&C Red No. 40 Aluminum lake, D&C Blue No. 1 Aluminum lake, D&C Green No. 3 Aluminum lake, D&C Orange No. 4 Aluminum lake, D&C Orange No. 5 Aluminum lake, D&C Orange No. 5 Zirconium lake, D&C Orange No. 10 Aluminum lake, D&C Orange No. 17 Barium lake, D&C Yellow No. 5 Aluminum lake, D&C Yellow No. 5 Zirconium lake, D&C Yellow No. 6 Aluminum lake, D&C Yellow No. 7 Zirconium lake, D&C Yellow No. 10 Aluminum lake, FD&C Blue No. 1 Aluminum lake, FD&C Red No. 4 Aluminum lake, FD&C Red No. 40 Aluminum lake, FD&C Yellow No. 5 Aluminum lake or FD&C Yellow No. 6 Aluminum lake.

We can also mention fat-soluble shades, such as Sudan Red, DC Red 17, DC Green 6, β-carotene, soybean oil, Sudan Brown, DC Yellow 11, DC Violet 2, DC Orange 5 or yellow quinoline.

The chemical substances corresponding to each of the organic dyes cited above are mentioned in the publication “International Cosmetic Ingredient Dictionary and Handbook”, 1997 edition, pages 371 to 386 and 524 to 528, published by The Cosmetic, Toiletries and Fragrance Association, including the contents are incorporated into this patent application by reference.

The pigments may also have been subjected to a hydrophobic treatment.

The hydrophobic treatment agent can be chosen from silicones, such as methicones, dimethicones, alkoxysilanes and perfluoroalkylsilanes; fatty acids, such as stearic acid; metal soaps, such as aluminum dimyristate, hydrogenated tallow glutamate aluminum salt, perfluoroalkyl phosphates, perfluoroalkylsilanes, perfluoroalkylsilazanes, poly(hexafluoropropylene oxides), polyorganosiloxanes comprising perfluoroalkyl perfluoropolyether groups and amino acids; N-acylated amino acids or their salts; lecithin, isopropyltriisostearyl titanate and mixtures thereof.

N-acylated amino acids may include an acyl group having 8 to 22 carbon atoms, such as, for example, a 2-ethylhexanoyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl or cocoyl group. The salts of these compounds may be aluminum, magnesium, calcium, zirconium, zinc, sodium or potassium salts. The amino acid can, for example, be lysine, glutamic acid or alanine.

The term “alkyl” cited in the aforementioned compounds designates in particular an alkyl group having from 1 to 30 carbon atoms and preferably having from 5 to 16 carbon atoms.

Hydrophobic treated pigments are described in particular in application EP-A-1 086 683.

Pearl Agents

In this document, the expression “pearl agent” designates colored particles of any shape, iridescent or not, of natural or synthetic origin, which exhibit a color effect by optical interference.

Examples of pearling agents include pearlescent pigments, such as mica coated with titanium oxide and an iron oxide, mica coated with bismuth oxychloride, mica coated with titanium oxide and of chromium oxide, mica covered with titanium oxide and an organic tint, in particular of the aforementioned type, as well as pearl pigments based on bismuth oxychloride.

It can also be mica particles on the surface of which at least two successive layers of metal oxides and/or organic dyes are superimposed.

The pearl agents may more particularly have a yellow, pink, red, bronze, orange, brown, gold and/or copper color or reflection.

We can cite, by way of illustration of the pearl agents which can be introduced as interference pigment in the first composition, the gold colored pearl agents sold in particular by BASF under the name Brilliant Gold 212G (Timica), Gold 222C ( Cloisonne), Sparkle Gold (Timica) and Monarch Gold 233X (Cloisonne); bronze pearl agents sold in particular by Merck under the names Bronze Fine (17384) (Colorona) and Bronze (17353) (Colorona) and by BASF under the name Super Bronze (Cloisonne); orange pearl agents sold in particular by BASF under the name Orange 363C (Cloisonne) and by Merck under the names Passion Orange (Colorona) and Matte Orange (17449) (Microna); brown pearl agents sold in particular by BASF under the names Nu-Antique Copper 340XB (Cloisonne) and Brown CL4509 (Chroma-lite); pearl agents with copper reflections sold in particular by BASF under the name Copper 340A (Timica); pearl agents with a red reflection sold in particular by Merck under the name Sienna Fine (17386) (Colorona); pearlescent agents with a yellow reflection sold in particular by BASF under the name Yellow (4502) (Chroma-lite); red pearl agents with a gold reflection sold in particular by BASF under the name Sunstone G012 (Gemtone); pink pearl agents sold in particular by BASF under the name Tan Opal G005 (Gemtone); black pearl agents with a golden reflection sold in particular by BASF under the name Nu-Antique Bronze 240 AB (Timica); blue pearl agents sold in particular by Merck under the name Matte Blue (17433) (Microna); white pearl agents with a silver reflection sold in particular by Merck under the name Xirona Silver; and the golden green pink orange pearl agents sold in particular by Merck under the name Indian Summer (Xirona); and their mixtures.

Goniochromatic pigments

In this document, the term “goniochromatic pigment” designates a pigment which makes it possible to obtain, when the composition is spread on a substrate, a chromatic distance in the a*b* plane of the CIE 1976 colorimetric space which corresponds to a variation Dh° of the hue angle h° of at least 20° when the angle of observation varies from the normal between 0° and 80°, for an angle of incidence of light of 45°.

The chromatic distance can be measured, for example, using a spectrogonioreflectometer from the Instrument Systems brand and with the reference GON 360 Goniometer, after spreading the composition in the fluid state over a thickness of 300 μm at the using an automatic spreader on contrast paper from the Erichsen brand and with the reference Type 24/5, the measurement being carried out on the black background of the paper.

The goniochromatic pigment can be chosen, for example, from multilayer interference structures and liquid crystal dyes.

In the case of a multilayer structure, the latter may comprise, for example, at least two layers, each layer being made, for example, from at least one material chosen from the group consisting of the following materials: MgF ₂ , CeF ₃ , ZnS, ZnSe, Si, SiO ₂ , Ge, Te, Fe ₂ O ₃ , Pt, Va, Al ₂ O ₃ , MgO, Y ₂ O ₃ , S ₂ O ₃ , SiO, HfO ₂ , ZrO ₂ , CeO ₂ , Nb ₂ O ₅ , Ta ₂ O ₅ , TiO ₂ , Ag, Al, Au, Cu, Rb, Ti, Ta, W, Zn, MoS ₂ , cryolite, alloys, polymers and their combinations.

The multilayer structure may or may not have, with respect to a central layer, symmetry with respect to the chemical nature of the stacked layers.

Different effects are obtained depending on the thickness and nature of the various layers.

Examples of symmetrical multilayer interference structures are, for example, the following structures: Fe ₂ O ₃ /SiO ₂ /Fe ₂ O ₃ /SiO ₂ /Fe ₂ O ₃ , a pigment having this structure being sold under the name Sicopearl by BASF; MoS ₂ /SiO ₂ /mica-oxide/SiO ₂ /MoS ₂ ; Fe ₂ O ₃ /SiO ₂ /mica-oxide/SiO ₂ /Fe ₂ O ₃ ; TiO ₂ /SiO ₂ /TiO ₂ and TiO ₂ /Al ₂ O ₃ /TiO ₂ , pigments having these structures being sold under the name Xirona by Merck.

Dyes for liquid crystals include, for example, silicones or cellulose ethers onto which mesomorphic groups are grafted. We can use, as liquid crystal goniochromatic particles, for example, those sold by Chenix and those sold under the name Helicone® HC by Wacker.

It is also possible to use, as a goniochromatic pigment, certain pearl agents, pigments with effects on a synthetic substrate, in particular a substrate of the alumina, silica, borosilicate, iron or aluminum oxide type, or interference flakes resulting from a film polyterephthalate.

We can cite in particular, by way of non-limiting examples of goniochromatic pigments, alone or in mixture, the goniochromatic pigments SunShine® sold by Sun Chemical, Cosmicolor Celeste® from Toyo Aluminum K.K., Xirona® from Merck and Reflecks Multidimensions® from BASF .

The composition according to the invention may also comprise one or more shades.

Among the fat-soluble shades, mention may be made in particular of fluorinated shades such as, for example, red Sudan, FDC Red 4, DC Red 17, Red 21, Red 27, DC Green 6, Sudan brown, Yellow 10, DC Yellow 11, DC Violet 2, DC Orange 4, DC Orange 5, Quinoline Yellow, or mixtures thereof.

In certain embodiments, the composition is preferentially chosen so as to provide a particular rheological profile. In particular, a storage modulus of the composition at an elevated temperature of 55°C divided by a storage modulus at a temperature of 25°C may be greater than or equal to 0.07, preferably at least 0.08, plus preferably at least 0.09, even more preferably at least 0.10, and most preferably at least 0.15.

This can be seen with reference to the . On the , two almost identical formulas were tested. The first was an exemplary formula that includes 2% disteardimonium hectorite and 2% silica silylate, the remainder being a base composed of 20-30% of a combination of two dimethicones, 8-12% of a block copolymer thermoplastic, 35 to 40% of a combination of hydrocarbon oils, and the remainder of various other components as disclosed herein. The second formula was a comparative formula, where the disteardimonium hectorite was replaced with a different filler, lauroyl lysine. As seen on the , the storage modulus of the exemplary composition at 55°C remains relatively high compared to the modulus of the comparative formula using lauroyl lysine. More precisely, in this example, the resulting quotient, sometimes called G' _DECAY , from the division of the storage modulus at 55°C by the storage modulus at 25°C, is 0.196 for the exemplary formula, and 0. 0248 for the comparative formula.

Test method: After producing the compositions, the modulus values were determined at 25°C, with a stress-controlled rheometer (e.g., a Haake RS 150) equipped with a sandblasted titanium body fitted with a anti-evaporation device and a measuring body with a sandblasted parallel plate of 40 mm/0 with the following conditions: no precision, 30 s of temperature equilibration at 25 °C, temperature ramp from 25 °C to 70 °C, 3 °C/min, applied stress 0.2% at ω = 1.0 s ^-1 .

With the values available, G' _DECAY can be calculated by dividing the value at an elevated temperature (for example 55°C is thus divided by at the temperature at 25°C). Note that in some embodiments this may be represented as a percentage.

In some embodiments, an alternative approach may be to divide the storage modulus (G') at an elevated temperature by the storage modulus of the composition at the initial point, then multiply by 100, to obtain a "relative" value in the form of percentage variation, sometimes referred to as G' _REL .

Example 1

The compositions listed in Table 1 were produced by combining the components at 90 to 95 °C, mixing them until uniform, and allowing them to cool. Uses are indicated as % by weight of the total composition. In some examples, a silica silylate that was spherical and had an oil absorbance ranging from about 2 mL/g to about 12 mL/g was used ("silica silylate 1"). Due to the wide performance range, it can sometimes be referred to as a “low oil absorption” silica silylate. In some examples, a silica silylate with irregularly shaped particles and having an oil absorbance of at least about 6 mL/g was used ("silica silylate 2"), i.e. a silylate “high oil absorption” silica. Dimethicones include cetyl-dimethicone and trimethylsiloxyphenyl-dimethicone in an approximate ratio of 1:4. Hydrocarbon oils include three polar oils and two nonpolar oils in a ratio of approximately 1:1.15, including esters, and one saturated or unsaturated polyolefin. Other materials include two low melting temperature fatty compounds in a total amount greater than 10%, solvents, a preservative, a tackifier and a thickener.

Matter Ex-1 Ex-2 Ex-3 C-1 C-2 C-3 C-4 C-5 Thermoplastic block copolymer 8 to 12 8 to 12 8 to 12 8 to 12 8 to 12 8 to 12 8 to 12 8 to 12 Dimethicone(s) 20 to 30 20 to 30 20 to 30 20 to 30 20 to 30 20 to 30 20 to 30 20 to 30 Hydrocarbon oil(s) 37 to 38 37 to 38 37 to 38 37 to 38 37 to 38 37 to 38 39 to 40 38.5 to 39.5 Silica silylate 1 2 2 - 2 2 2 - 2 Silica silylate 2 - - 2 - - - - - Stearalkonium hectorite - 2 - - - - - - Disteardimonium hectorite 2 - 0.5 - - - 2 0.5 Lauroyl Lysine - - - 2 - - - - Kaolin - - - - 2 - - - Fumed silica - - - - - 2 - - Pigments and Pearl Agents 0.1 to 2 0.1 to 2 0.1 to 2 0.1 to 2 0.1 to 2 0.1 to 2 0.1 to 2 0.1 to 2 Other matters disclosed in this document q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s.

Various embodiments of the present disclosure are shown in the form of exemplary formulas (Ex-1, Ex-2 and Ex-3), together with comparative formulas (C-1, C-2, C-3, C-4 and C -5).

The above formulas were compared using the rheological testing method disclosed herein regarding the comparison of a storage modulus at 55°C to a storage modulus at 25°C. There shows the results in graph form, where the storage modulus values for the eight compositions are shown: Ex-1 (ref. 301, solid line), Ex-2 (ref. 302, dotted line), Ex- 1 (ref. 303, short line), C-1 (ref. 304, medium line), C-2 (ref. 305, long line), C-3 (ref. 306, mixed line) dotted and medium lines), C-4 (ref. 307, mixed dotted line and long lines), and C-5 (ref. 308, mixed double dotted line and long lines). The G' _DECAY values calculated from these are summarized in Table 2, below.

The formulations were also placed in a stability chamber maintained at a temperature of 55°C for one week, after which the samples were visually assessed to determine if sedimentation/syneresis had occurred. The results are summarized in Table 2, below.

Essay Ex-1 Ex-2 Ex-3 C-1 C-2 C-3 C-4 C-5 G' _DECAY 0.196 0.0810 0.0986 0.0248 0.0222 0.0130 0.0498 0.0579 Visual sedimentation No No Minor Severe Severe Severe Severe Severe

As can be seen, the use of the two disclosed hectorites, as well as the claimed amount of silica silylate, surprisingly results in stable formulations. There is a clear division in G' _DECAY , between those who have severe sedimentation/syneresis problems and those who have improved performance. As can be seen, the embodiments of the composition have values of G' _DECAY ≥ 0.08. In this example, the values are between 0.08 and 0.2, and all show a significant improvement in sedimentation/syneresis compared to the other comparative formulas with a G' _DECAY less than 0.08.

It is surprising that using other fillers to replace hectorites does not work. For example, replacing disteardimonium hectorite with any other filler, such as fumed silica (C-3), kaolin (C-2), or lauroyl lysine (C-1), results in severe problems of sedimentation/syneresis. Removal of silica silylate (C-4) also causes severe sedimentation/syneresis problems.

Without being bound by any theory, it should be noted that a usage level of 0.5% by weight of hectorite may sometimes be insufficient, depending on particle shape and/or absorbance capacity. of silica silylate oil. When using 0.5% of a hectorite and 2% of a silica silylate with lower oil absorbance (C-5), the formulation is still unstable with severe sedimentation/syneresis problems, while 0.5% hectorite and 2% a silica silylate with consistently higher oil absorbance (Ex-3), the formula is borderline stable, with only minor problems of sedimentation/syneresis.

Also disclosed is a process for providing a stable, high gloss, low tack composition for lips. The process uses a composition as disclosed herein. The method includes forming a dual phase product on the lips from a single application of a product by applying a composition as disclosed herein, fragmenting the composition such that it forms a first layer comprising the thermoplastic block copolymer in contact with the lips and a second layer comprising the dimethicone on top of the first layer.

As seen on the , when applied to the lips 410 of a person 400, the product forms a first layer 420 in contact with the lips 410, and a second layer 430 in contact with the first layer 410.

Those skilled in the art will recognize or be able to establish, simply using routine experimentation, numerous equivalents to the specific embodiments of the invention described herein. These equivalents are intended to be encompassed by the following claims.

Claims (10)

Composition for application to the lips, comprising:
a first phase comprising:
at least about 8% by weight of a thermoplastic block copolymer comprising styrene blocks; And
at least one hydrocarbon oil; And
a second phase comprising at least 20% of a dimethicone;
a hectorite chosen from disteardimonium hectorite, stearalkonium hectorite, or both; And
a silica silylate. A composition according to claim 1, wherein the first phase comprises at least about 10% by weight of the thermoplastic block copolymer. Composition according to any one of the preceding claims, in which the composition comprises at least 0.5% by weight of hectorite. Composition according to any one of the preceding claims, in which the composition comprises at least 1% by weight of hectorite. Composition according to any one of the preceding claims, in which the composition comprises 1.5% to 2.5% by weight of hectorite. Composition according to any one of the preceding claims, in which the hydrocarbon oil comprises hydrogenated polyisobutene. Composition according to any one of the preceding claims, in which a storage modulus at a temperature of 55°C divided by a storage modulus at a temperature of 25°C is greater than or equal to 0.08. Composition according to any one of the preceding claims, wherein a ratio of the amount of silica silylate to the amount of hectorite is between 4:1 and 1:1. A composition according to any preceding claim further comprising a fatty compound having a melting point in the range of 30°C to 50°C. Composition according to any one of the preceding claims, in which the second phase is dispersed in the first phase.