阅读说明：本技术 护肤组合物 (Skin care compositions ) 是由 张路 N·M·班达卡 P·R·坦纳 S·D·麦康瑙希 于 2019-08-22 设计创作，主要内容包括：本公开一般涉及一种护肤组合物,所述护肤组合物用于向皮肤提供紫外线(UV)防护并且向消费者提供期望的感官感觉。更具体地,本公开涉及一种紫外线阻挡型护肤组合物,所述紫外线阻挡型护肤组合物具有合适的粘着性和合适的粘度两者。(The present disclosure relates generally to a skin care composition for providing Ultraviolet (UV) protection to the skin and providing a desired sensory feel to the consumer. More particularly, the present disclosure relates to a uv-blocking skin care composition having both suitable tackiness and suitable viscosity.)

1. A skin care composition comprising:

a) from 7% to 90%, by weight of the composition, of one or more Ultraviolet (UV) -blocking actives;

b) from 2% to 90%, by weight of the composition, of a polydimethylsiloxane having a kinematic viscosity of from 0.1cSt to 2000cSt as measured by the rheological method; and

c) from 3% to 90% by weight of the composition of a particulate material,

wherein the one or more UV-blocking active materials comprise a water-soluble UV-blocking active material.

2. The skin care composition according to claim 1, wherein the composition comprises from 10% to 60%, preferably from 15% to 55%, more preferably from 17% to 50%, most preferably from 20% to 45%, by weight of the composition, of the one or more UV-blocking actives.

3. The skin care composition according to claim 1 or 2, wherein the water soluble uv blocking active is selected from phenylbenzimidazole sulfonic acid, terephthalylidene dicamphor sulfonic acid, disodium phenylbenzimidazole tetrasulfonate, and any combination thereof, and/or wherein the additional uv blocking active is preferably selected from homosalate, octocrylene, ethylhexyl triazone, butyl methoxydibenzoylmethane, ethylhexyl salicylate, ethylhexyl methoxycinnamate, oxybenzone, ethylhexyl triazone, diethylaminohydroxybenzoyl hexyl benzoate, zinc oxide, titanium dioxide, bisethylhexyloxyphenol methoxyphenyl triazine, triethanolamine salicylate, methylenebisbenzotriazolyl tetramethylbutylphenol, and any combination thereof;

wherein the water-soluble ultraviolet ray blocking active substance is preferably phenylbenzimidazole sulfonic acid.

4. The skin care composition according to any preceding claims, wherein the composition comprises from 0.01% to 50%, preferably from 0.1% to 30%, more preferably from 0.5% to 10%, most preferably from 1% to 5%, by weight of the composition, of the water-soluble ultraviolet blocking active.

5. The skin care composition of any preceding claim, wherein the one or more uv-blocking actives further comprise an additional uv-blocking active, and wherein the additional uv-blocking active is preferably selected from the group consisting of homosalate, octocrylene, butyl methoxydibenzoylmethane, diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl methoxycinnamate, and any combination thereof.

6. The skin care composition according to claim 5, wherein the composition comprises from 0.01% to 50%, preferably from 0.1% to 45%, more preferably from 1% to 40%, still more preferably from 5% to 35%, most preferably from 13% to 21%, by weight of the composition, of the additional ultraviolet blocking active.

7. The skin care composition according to any preceding claims, wherein the composition comprises from 3% to 40%, preferably from 4% to 30%, more preferably from 4.5% to 20%, most preferably from 4.5% to 10%, by weight of the composition, of the polydimethylsiloxane; wherein it is preferred that the kinematic viscosity of the polydimethylsiloxane is in the range of from 0.5 to 1000cSt, preferably from 1 to 500cSt, more preferably from 1.5 to 350cSt, still more preferably from 2 to 200cSt, still more preferably from 3.5 to 100cSt, still more preferably from 3.5 to 50cSt, most preferably from 3.5 to 20cSt, as measured by the rheological method.

8. The skin care composition according to any preceding claims, wherein the composition comprises from 3.5% to 40%, preferably from 4% to 30%, more preferably from 4.5% to 20%, most preferably from 4.5% to 10%, by weight of the composition, of the particulate material; wherein it is preferred that the particulate material is selected from: sugar derivatives, silica, silicates, carbonates, siloxanes and any mixtures thereof.

9. The skin care composition according to claim 8,

wherein the sugar derivative is selected from the group consisting of aluminum starch octenylsuccinate, distarch phosphate, tapioca starch, acetyl substituted starch, adipic acid substituted starch, hydroxypropylated starch, corn starch, 2-hydroxypropyl ether modified starch, hydroxypropyl starch phosphate, cyclodextrin and its derivatives, polymethylsilsesquioxane coated starch, and any combination thereof; and/or

Wherein the silicate is selected from the group consisting of talc, kaolin, and combinations thereof; and/or

Wherein the carbonate is selected from the group consisting of magnesium carbonate, calcium carbonate, and combinations thereof; and/or

Wherein the siloxane is selected from the group consisting of vinyl dimethicone/methicone silsesquioxane crosspolymer, polysiloxane, polymethylsilsesquioxane, diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane crosspolymer, and any combination thereof.

10. A skin care composition according to any preceding claims wherein said weight ratio of said polydimethylsiloxane to said particulate material is between 1:2 and 2:1, preferably between 1:1.5 and 1.5:1, more preferably between 1:1.2 and 1.2:1, most preferably between 1:1.1 and 1.1: 1.

11. The skin care composition according to any preceding claims, wherein the composition further comprises from 0.01% to 40%, preferably from 0.05% to 5%, more preferably from 0.1% to 2%, still more preferably from 0.2% to 1%, most preferably from 0.3% to 0.8%, by weight of the composition, of an emulsifier; wherein it is preferred that the emulsifier is selected from the group consisting of ether-based emulsifiers, ester-based emulsifiers, polymeric emulsifiers, silicone emulsifiers and any combination thereof.

12. The skin care composition according to claim 11 wherein the ether-based emulsifier is selected from the group consisting of ethers of polyethylene glycol and fatty alcohol, ethers of polyethylene glycol and glycosylated fatty alcohol, C_12-30Ethers of alcohols with glycerol or polyglycerol, alkylene oxide-modified C_12-30Ethers of alcohols with glycerol or polyglycerol, C_12-30Ethers of fatty alcohols and sucrose or glucose, ethers of sorbitol and/or sorbitan and alkoxylated sorbitan, ethers of polyethylene glycol and cholesterol and any combination thereof; and/or

Wherein the ester-based emulsifier is selected from the group consisting of esters of polyethylene glycol and fatty acid, esters of polyethylene glycol and glycosylated fatty acid, C_12-30Esters of fatty acids and glycerol or polyglycerol, sucrose or glucose and C_12-30Esters of fatty acids, pentaerythritol and C_12-30Esters of fatty acids, sorbitol and/or sorbitan and C_12-30Esters of fatty acids, C_12-30Esters of fatty acids and alkoxylated ethers of sorbitol and/or sorbitan and any combination thereof;

wherein the polymeric emulsifier is selected from the group consisting of crosslinked alkyl acrylates, acryloyldimethyl taurate polymers, and any combination thereof; and/or

Wherein the silicone emulsifier is selected from the group consisting of polyether modified silicones, polyglycerolated linear or branched silicone emulsifiers, and any combination thereof, wherein the crosslinked alkyl acrylate is preferably selected from the group consisting of acrylate/C10-30 alkyl acrylate crosspolymer, acrylate/C12-13 alkyl methacrylate/methoxyethyl acrylate crosspolymer, acrylate/ethylhexyl acrylate/glycidyl methacrylate crosspolymer, acrylate/PEG-4 dimethacrylate crosspolymer, acrylate/steareth-20 methacrylate crosspolymer, acrylate/vinyl isodecanoate crosspolymer, acrylic acid/vinyl ester, and combinations thereof, Acrylate/vinyl neodecanoate crosspolymer, allyl methacrylate/ethylene glycol dimethacrylate crosspolymer, allyl methacrylate crosspolymer, butyl acrylate/ethylene glycol dimethacrylate crosspolymer, C8-22 alkyl acrylate/methacrylic acid crosspolymer, ethylene glycol dimethacrylate/vinyl alcohol crosspolymer, lauryl methacrylate/ethylene glycol dimethacrylate crosspolymer, lauryl methacrylate/sodium methacrylate crosspolymer, methacrylic acid/PEG-6 methacrylate/PEG-6 dimethacrylate crosspolymer, PEG/PPG-5/2 methacrylate/methacrylic acid crosspolymer, stearyl methacrylate/lauryl methacrylate crosspolymer, and any combination thereof; and/or wherein said acryloyldimethyl taurate polymer is preferably selected from the group consisting of acrylamide/acryloyldimethyl sodium taurate copolymer, acrylamide/acryloyldimethyl sodium taurate/acrylic acid copolymer, acryloyldimethyl ammonium taurate/behenyl polyoxyethylene ether-25 methacrylate crosspolymer, acryloyldimethyl ammonium taurate/carboxyethyl acrylate crosspolymer, acryloyldimethyl ammonium taurate/lauryl polyoxyethylene ether-7 methacrylate copolymer, acryloyldimethyl ammonium taurate/stearyl polyoxyethylene ether-25 methacrylate crosspolymer, acryloyldimethyl ammonium taurate/stearyl polyoxyethylene ether-8 methacrylate copolymer, acryloyldimethyl ammonium taurate/vinyl formamide copolymer, and mixtures thereof, Acryloyldimethyl ammonium taurate/VP copolymer, polyacryloyldimethyl ammonium taurate

Dimethylacrylamide/sodium acryloyldimethyltaurate crosspolymer, HEA/sodium acryloyldimethyltaurate/steareth-20 methacrylate copolymer, hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer, polyacryloyldimethyltaurate polyoxymethylenemelamine, sodium acrylate/acryloyldimethyltaurate/dimethylacrylamide crosspolymer, sodium acrylate/sodium acryloyldimethyltaurate copolymer, sodium acrylate/sodium acryloyldimethyltaurate/acrylamide copolymer, sodium acryloyldimethyltaurate/PEG-8 diacrylate crosspolymer, sodium acryloyldimethyltaurate/acrylamide/VP copolymer, sodium acryloyldimethyltaurate/methacrylamidoic acid copolymer, acrylic acid copolymer, sodium acryloyldimethyl taurate/VP cross-linked polymer, sodium polyacrylyldimethyl taurate, and any combination thereof.

13. The skin care composition according to any preceding claims, wherein the composition is substantially free of any fatty alcohol selected from the group consisting of cetyl alcohol, stearyl alcohol, cetearyl alcohol, behenyl alcohol, and any combination thereof.

14. The skin care composition according to any preceding claims, wherein said composition further comprises from 0.01% to 5%, preferably from 0.1% to 3%, more preferably from 0.3% to 2%, still more preferably from 0.4% to 1.8%, and most preferably from 0.5% to 1.6%, by weight of said composition, of a pH adjusting agent, wherein said pH adjusting agent is preferably selected from the group consisting of potassium hydroxide, sodium hydroxide, ammonium hydroxide, aminomethylpropanol, triethanolamine, tetrahydroxypropylethylenediamine, and any combination thereof.

15. The skin care composition according to any preceding claims, wherein the composition exhibits an average time to break of between 0.01s and 0.7s, preferably between 0.05s and 0.4s, more preferably between 0.10s and 0.25s as measured by the adhesion method, and/or wherein the composition is at 100s^-1It exhibits a dynamic viscosity of between 0.01 and 0.70Pa · S, preferably between 0.35 and 0.70Pa · S, more preferably between 0.40 and 0.68Pa · S, as measured by the described rheological method.

16. The skin care composition according to any preceding claims, wherein the composition comprises:

a) 20% to 45%, by weight of the composition, of one or more uv-blocking actives comprising phenylbenzimidazole sulfonic acid, homosalate, octocrylene, and butyl methoxydibenzoylmethane, wherein the concentration of phenylbenzimidazole sulfonic acid is 2% to 5%, by weight of the composition, the concentration of homosalate is 6% to 10%, the concentration of octocrylene is 7% to 11%, by weight of the composition, and the concentration of butyl methoxydibenzoylmethane is 1% to 5%, by weight of the composition;

b) from 4.5% to 6%, by weight of the composition, of a polydimethylsiloxane having a kinematic viscosity of from 3.5cSt to 20cSt as measured by the rheological method;

c) from 4.5% to 6%, by weight of the composition, of polymethylsilsesquioxane coated starch or polymethylsilsesquioxane;

d) from 0.3% to 0.8%, by weight of the composition, of an acrylate/C10-30 alkyl acrylate crosspolymer; and

e) from 0.5% to 0.8% by weight of the composition of sodium hydroxide.

17. A skin care composition comprising from 15% to 55%, by weight of the composition, of one or more uv-blocking actives, wherein the composition exhibits:

(1) an average time to break of between 0.01s and 0.7s as measured by the adhesion method; and (2) as by the described rheological method at 100s^-1A dynamic viscosity measured below between 0.01Pa · S and 0.70Pa · S.

Technical Field

The present disclosure relates generally to a skin care composition for providing Ultraviolet (UV) protection to a consumer and having a desired skin feel. More particularly, the present disclosure relates to an ultraviolet ray blocking composition that maintains a balance between tack and viscosity.

Background

It is well known that ultraviolet radiation (i.e., wavelengths in the range of 280nm to 400 nm) can cause damage to the epidermis of humans. More specifically, ultraviolet rays having a wavelength in the range of 320nm to 400nm (referred to as UV-a) may cause hyperpigmentation of the skin and long-term damage therein, such as wrinkles and fine lines, and ultraviolet rays having a wavelength in the range of 280nm to 320nm (referred to as UV-B) may cause erythema and skin burns. To prevent or minimize damage or deleterious effects caused by ultraviolet radiation, skin care compositions (also referred to as sunscreen compositions) are provided that contain various concentrations of ultraviolet-blocking compounds.

Since sunscreen compositions are used more frequently in warmer seasons, such as the summer, consumers desire to leave the skin feeling fresh, moist when using sunscreen compositions. Such a desire is particularly strong for consumers who use sunscreen compositions on a daily basis. However, most sunscreen compositions on the market are oily and therefore it is generally difficult to provide such a refreshing, watery feel to the skin. In contrast, such oily sunscreen compositions tend to impart a greasy feel to the skin. Such negative skin feel may be especially worse for high SPF uv-blocking products, as such products contain significantly higher levels of uv-blocking actives. In particular, high SPF uv-blocking compositions will give a very sticky and greasy skin feel when applied to the skin. It is quite unpleasant for the consumer to leave a greasy mark on all objects that he (she) touches after applying the sunscreen. Thus, consumers desire uv-blocking compositions that have both a high SPF index and good skin feel (e.g., good spreadability, non-greasy, non-sticky/non-tacky, non-greasy/non-shiny, refreshing, etc.).

To meet such consumer expectations, a variety of sunscreen products have been developed to provide improved sensory benefits. Unfortunately, few products can meet the needs of all consumers. For example, some products have low viscosity to provide good spreadability but are highly tacky, while some other products are not quite tacky but difficult to spread. It is difficult to formulate uv-blocking compositions that provide both a high SPF index and good skin feel to the consumer.

Thus, there is a need for uv-blocking compositions that not only provide effective uv protection to the skin, but also provide a fresh, non-greasy feel. It would also be advantageous to provide a sunscreen composition that is easy to apply and does not stain upon use. It would also be advantageous to provide sunscreen compositions that can be suitably used as foundation base products. More specifically, it would be highly advantageous to develop uv-blocking compositions that provide the consumer with a balanced feel between spreadability and tack.

Disclosure of Invention

The present inventors have developed a novel technique for formulating uv-blocking compositions to meet the needs described above. In particular, it was surprisingly found that it exhibits an average time to break within a specific range (such as between about 0.01s and about 0.7s as measured by the viscous force method described below) and within a specific range (such as 100s as measured by the rheological method described below)^-1Between about 0.01 Pa-S and about 0.70 Pa-S) provides the consumer with a desired skin feel. In particular, such high SPF skin care compositions may achieve a good balance between different sensory aspects such as spreadability, oiliness, stickiness/stickiness, water light feel, light feel and/or shine.

Furthermore, it has been surprisingly found that high SPF skin care compositions comprising a low viscosity polydimethylsiloxane, a particulate material, and a water-soluble uv-blocking active can meet the above-mentioned consumer needs by providing effective uv protection while leaving the skin feeling fresh, non-greasy, and easy to apply and/or not messy when used. More specifically, the compositions of the present disclosure can provide a balanced feel to the consumer that is similar to the sensory perception left after application of water to the skin without any heavy or greasy feel.

In one aspect, the present disclosure relates to a skin care composition that can comprise:

a) from about 7% to about 90%, by weight of the composition, of one or more uv-blocking actives;

b) from about 2% to about 90%, by weight of the composition, of a polydimethylsiloxane having a kinematic viscosity of from 0.1cSt to 2000cSt, as measured by the rheological method described below; and

c) from about 3% to about 90%, by weight of the composition, of a particulate material.

In another aspect, the present disclosure relates to a skin care composition comprising from 15% to 55%, by weight of the composition, of one or more uv-blocking actives, wherein the composition can exhibit: (1) an average time to break of between about 0.01s and about 0.7s as measured by the viscous force method, and (2) at 100s as measured by the rheological method^-1A dynamic viscosity of between about 0.01Pa · S and about 0.70Pa · S measured below.

Drawings

Fig. 1 shows an experimental setup for the adhesion method.

Detailed Description

As used in the specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. All percentages and ratios used herein are by weight of the total composition, unless otherwise specified. The number of significant figures indicates that neither a limitation of the indicated quantity nor a limitation of the accuracy of the measurement is expressed. All numerical values should be understood as modified by the word "about" unless otherwise specifically indicated. Unless otherwise indicated, all measurements are understood to be made at ambient conditions, where "ambient conditions" refers to conditions at about 25 ℃, at about one atmosphere of pressure, and at about 50% relative humidity. All numerical ranges are narrower ranges including the endpoints; the upper and lower limits of the ranges described are combinable to form additional ranges not explicitly described.

The compositions of the present invention may comprise, consist essentially of, or consist of the essential components described herein, as well as optional ingredients. As used herein, "consisting essentially of …" means that the composition or component may include additional ingredients, so long as the additional ingredients do not materially alter the basic and novel characteristics of the claimed compositions or methods.

Definition of

"coating" or "applying" as used with respect to a composition means to apply or spread the composition onto keratinous tissue, such as the epidermis.

By "keratinous tissue" is meant a keratin-containing layer disposed as the outermost protective covering of a mammal (e.g., human, dog, cat, etc.) including, but not limited to, skin, lips, hair, toenails, nails, cuticles, hooves, and the like.

By "dermatologically acceptable" is meant that the composition or component is suitable for use in contact with human skin tissue without undue toxicity, incompatibility, instability, allergic response, and the like.

By "safe and effective amount" is meant an amount of a compound or composition sufficient to significantly induce a positive benefit.

By "uv-blocking active" is meant a material that is considered by those skilled in the art of sunscreen formulation to be a dermatologically acceptable uv-absorbing or uv-reflecting active material. Such uv blocking actives may be described as UVA blocking and/or UVB blocking actives. The inclusion of an active agent in a formulation intended for human use generally requires approval by a regulatory agency. Those actives that have or are currently approved by the U.S. food and drug administration (according to section 21c.f.r. 352) as acceptable for use in over-the-counter sunscreen drug products include organic and inorganic substances including, but not limited to, para-aminobenzoic acid, avobenzone, cinoxate, dioxybenzone, homosalate, menthyl anthranilate, octyl salicylate, oxybenzone, amyl dimethylaminobenzoate, phenylbenzimidazole sulfonic acid, sulisobenzone, triethanolamine salicylate, titanium dioxide, zinc oxide, diethanolamine methoxycinnamate, digalloyl trioleate, ethyldihydroxypropyl PABA, glyceryl aminobenzoate, lawsonia with dihydroxyacetone, red petrolatum. Examples of additional sunscreen actives that have not been approved in the united states but are approved for over-the-counter use in other regions and countries such as europe (as specified by the european union committee's cosmetic directives), japan, china, australia, new zealand or canada include ethylhexyl triazone, dioctyl butamido triazone, benzylidene malonate polysiloxanes, p-xylylene dicamphor sulfonic acid, disodium phenylbisbenzimidazole tetrasulfonate, diethylaminohydroxybenzoylhexyl benzoate, bisdiethylaminohydroxybenzoyl benzoate, bisbenzoxazolyl phenylethylhexylimino triazine, cresoltroxazole trisiloxane, methylenebisbenzotriazolyl tetramethylbutylphenol and bisethylhexyloxyphenol methoxyphenyl triazine, 4-methylbenzylidene camphor, and isoamyl 4-methoxycinnamate. However, as the approved materials list is currently expanding, one of ordinary skill will recognize that the present invention is not limited to uv-blocking actives currently approved for human use, but is readily applicable to those uv-blocking actives that may be allowed in the future.

By "skin care composition" is meant a topical personal care composition for regulating and/or improving the condition of skin. Some non-limiting examples of skin care compositions include solutions, aerosols, microcapsules, creams, moisturizers, gels, lotions, ointments, serums, sticks, sprays, emulsions, or any other dispersion, such as facial cleansers, body washes, sun blocks, sun sprays, sun block emulsions, skin creams, makeup bases, colored creams, liquid foundations, eye care products, concealer care essences, concealer sticks or natural make-up products for the lips, liquid lip colors, lipsticks, and the like.

By "topical" is meant that the composition is intended to be applied to a keratinous surface such as skin or hair.

"derivative" refers to ester, ether, amide, hydroxy, and/or salt structural analogs of the related compounds.

Skin care compositions

The skin care compositions herein are configured for topical application to keratinous tissue. In particular, skin care compositions can comprise polydimethylsiloxane and particulate materials, as well as specific amounts of water-soluble uv-blocking actives, and such compositions can provide desirable feel, including non-greasy, non-sticky (as indicated by average break time), non-shiny, refreshing, and easy-to-apply (as indicated by dynamic viscosity). More specifically, the skin care composition is an ultraviolet-blocking composition or a sunscreen composition.

Without being limited by theory, it is believed that the tackiness and viscosity of the skin care composition is critical to providing the desired feel on the skin. As used herein, tackiness is characterized by the average break time, i.e., the time required for the strands of a composition to break (i.e., how long a force must be applied to break the contact) as an object in contact with the composition moves away from the composition. Tack is determined according to the tack method described in the test methods section below.

The dynamic viscosity of a fluid represents its resistance to shear flow, with adjacent layers moving parallel to each other at different speeds. Without being limited by theory, it is believed that dynamic viscosity is indicative of spreadability of the skin care composition. The dynamic viscosity herein is determined according to the rheological method described in the test methods section below.

In some embodiments, the skin care compositions of the present invention may exhibit between about 0.01s and about 0.7s, preferably between about 0.05s and about 0.4s, more preferably between 0.08s and about 0.3s, and most preferably between about 0.10s and about 0.25s, for example about 0.11s, about 0.12s, about 0.25s, as measured by the adhesion methodAn average time to break of 0.13s, about 0.14s, about 0.15s, about 0.16s, about 0.17s, about 0.18s, about 0.19s, about 0.20s, about 0.21s, about 0.22s, about 0.23s, about 0.24s, about 0.25s, or any range therebetween. Additionally or alternatively, the composition may exhibit, for example, rheological behavior at 100s^-1A dynamic viscosity measured at a temperature between about 0.01Pa · S and about 0.70Pa · S, preferably between about 0.20Pa · S and about 0.70Pa · S, more preferably between about 0.35Pa · S and about 0.70Pa · S, and most preferably between about 0.40Pa · S and about 0.68Pa · S, such as about 0.40Pa · S, about 0.42Pa · S, about 0.44Pa · S, about 0.46Pa · S, about 0.48Pa · S, about 0.50Pa · S, about 0.52Pa · S, about 0.54Pa · S, about 0.56Pa · S, about 0.58Pa · S, about 0.60Pa · S, about 0.62Pa · S, about 0.64Pa · S, about 0.66Pa · S, or any range therebetween. Preferably, the skin care composition of the present invention exhibits both an average break time and a dynamic viscosity within the above ranges.

In preferred embodiments, the composition exhibits an average time to break of between about 0.10s and about 0.25s as measured by the viscous force method and/or 100s as measured by the rheological method^-1A dynamic viscosity of between about 0.40Pa · S and about 0.68Pa · S measured below.

In more preferred embodiments, the composition exhibits an average time to break of between about 0.18s and about 0.25s as measured by the viscous force method and/or 100s as measured by the rheological method^-1A dynamic viscosity of between about 0.48Pa · S and about 0.66Pa · S measured below.

Ultraviolet ray blocking active material

The compositions of the present disclosure may comprise a uv-blocking active. As used herein, the term "uv-blocking active" includes both sunscreens and physical sunscreens. Suitable uv-blocking actives may be organic or inorganic. Suitable uv-blocking active substances are well known. The composition may contain an amount of a uv-blocking active as specified or suggested by the united states, europe, japan, china, australia, new zealand or canadian regulatory agency. In particular embodiments, the composition comprises from about 0.5%, 1%, 2%, or 3% to about 50%, 40%, 30%, or 20% of the uv-blocking active by weight of the composition. In some embodiments, the composition may comprise a sufficient amount of uv-blocking active to achieve a Sun Protection Factor (SPF) of at least about 15, 30, 45, 50, or 50 +. SPF testing is conventional and well known in the art. A suitable SPF test is specified in ISO 24444.

In some embodiments, the composition may comprise from about 10% to about 60%, preferably from about 15% to about 55%, more preferably from about 17% to about 50%, and most preferably from about 20% to about 45%, by weight of the composition, of one or more uv-blocking actives.

Suitable UV-blocking active substances include dibenzoylmethane derivatives, including 2-methyldibenzoylmethane, 4-isopropyldibenzoylmethane, 4-tert-butyldibenzoylmethane, 2, 4-dimethyldibenzoylmethane, 2, 5-dimethyldibenzoylmethane, 4' -diisopropyldibenzoylmethane, 4' -dimethoxydibenzoylmethane, 4-tert-butyl-4 ' -methoxydibenzoylmethane (i.e., butylmethoxydibenzoylmethane or idebenone) (as1789 commercially available from DSM), 2-methyl-5-isopropyl-4 '-methoxydibenzoylmethane, 2-methyl-5-tert-butyl-4' -methoxydibenzoylmethane, 2, 4-dimethyl-4 '-methoxydibenzoylmethane and 2, 6-dimethyl-4-tert-butyl-4' -methoxydibenzoylmethane. Other suitable UV-blocking actives include 2-ethylhexyl p-methoxycinnamate (asMCX commercially available from DSM), 2-hydroxy-4-methoxybenzophenone, benzophenone-3 (i.e., oxybenzone), octyldimethyl p-aminobenzoic acid, behenyl trioleate, 2-dihydroxy-4-methoxybenzophenone, ethyl 4- (bis (hydroxypropyl)) aminobenzoate, 2-cyano-3, 3-diphenylacrylic acid-2-ethylhexyl ester, 2-ethylhexyl salicylate, homomenthyl salicylate (homosalate), glyceryl p-aminobenzoate, 3, 5-trimethylcyclohexyl salicylate, methyl anthranilate, p-dimethylaminobenzoic acid or aminobenzoate, 2-ethylhexyl p-dimethylaminobenzoate, 2-phenylbenzimidazole-5-sulfonic acid, 2- (p-dimethylaminophenyl) -5-sulfonic acid benzoxazole, octocrylene, zinc oxide, titanium dioxide and mixtures of these compounds.

Other suitable UV-blocking actives include 4-methylbenzylidenecamphor (as5000 commercially available from DSM or Merck as Eusolex 6300), methylenebis-benzotriazolyl tetramethylbutylphenol (i.e., bisoctrizole, asM commercially available from BASF), bis-ethylhexyloxyphenol methoxyphenol triazine (i.e., bemotrizinol, asS commercially available from BASF), disodium phenylbisbenzimidazole tetrasulfonate (i.e., disodium Bisdisulizole as NeoCommercially available as AP from Symrise), ethylhexyl triazone (asT150 commercially available from BASF), cresoltrazol trisiloxane (sold as Mexoryl XL by L' Oreal), sodium dihydroxydimethoxydisulfobenzophenone (i.e., benzophenone-9, asDS 49 commercially available from BASF), diethylamino hydroxybenzoyl hexyl benzoate (asCommercially available from BASF, a Plus), diethylhexylbutamido triazone (i.e., Iscotrizinol, asHEB commercially available from 3V Sigma), polysiloxane-15 (i.e., asSLX commercially available from DSM), isoamyl p-methoxycinnamate (i.e., amiloride as NeoE1000 commercially available from Symrise) and mixtures thereof.

In some embodiments, the uv-blocking actives in the compositions of the present disclosure may include water-soluble uv-blocking actives and optionally additional uv-blocking actives. Preferably, the water soluble uv blocking active is selected from phenylbenzimidazole sulfonic acid, terephthalylidene dicamphor sulfonic acid, disodium phenylbenzimidazole tetrasulfonate, and any combination thereof, and/or the additional uv blocking active is selected from homosalate (methyl salicyl alcohol), octocrylene, ethylhexyl triazone, butyl methoxydibenzoylmethane, ethylhexyl salicylate, ethylhexyl methoxycinnamate, oxybenzone, ethylhexyl triazone, diethylamino hydroxybenzoyl hexyl benzoate, zinc oxide, titanium dioxide, bis-ethylhexyloxyphenol methoxyphenyl triazine, triethanolamine salicylate, methylene bis-benzotriazolyl tetramethylbutylphenol, and any combination thereof. More preferably, the water soluble uv blocking active is phenylbenzimidazole sulfonic acid and/or the additional uv blocking active is selected from the group consisting of homosalate (methyl salicyl alcohol), octocrylene, butyl methoxydibenzoylmethane, hexyl diethylaminohydroxybenzoyl benzoate, bisethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl methoxycinnamate and any combination thereof.

Specifically, the composition may comprise from about 0.01% to about 50%, more preferably from about 0.1% to about 30%, still more preferably from about 0.5% to about 10%, and most preferably from about 1% to about 5%, such as about 1%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5%, or any range therebetween, and/or the composition may comprise from about 0.01% to about 50%, more preferably from about 0.1% to about 45%, still more preferably from about 1% to about 40%, still more preferably from about 5% to about 35%, and most preferably from about 13% to about 21%, such as about 13%, about 14%, about 15%, about 16%, about 17%, about 18%, about 19%, about 20%, about 21%, or any range therebetween. Without being bound by theory, it is believed that the use of a preferred concentration of water soluble uv blocking active in combination with a preferred concentration of additional uv blocking active in certain specific ratios produces additional benefits, such as even better sensory benefits.

Preferably, in some embodiments, the compositions of the present disclosure are substantially free of physical sunscreens, such as metal oxides (e.g., zinc oxide or titanium oxide). Without being bound by theory, it is believed that the absence of physical sunscreens is useful to prevent uncomfortable skin sensations.

Preferably, in some embodiments, in the compositions of the present disclosure, the concentration of homosalate is from 6% to 10% by weight of the composition, the concentration of octocrylene is from 7% to 11% by weight of the composition, and the concentration of butyl methoxydibenzoylmethane is from 1% to 5% by weight of the composition.

The uv-blocking active of the present invention may be encapsulated. Examples of commercially available encapsulated sunscreen actives include, but are not limited to: eusolex UV-Pearls 2292(Merck/EMD Chemicals) containing water, ethylhexyl methoxycinnamate, silica, phenoxyethanol, PVP, chlorphenesin, disodium EDTA, and BHT; silaoma ME (Seiwa Kasei co., Ltd), which includes water, polysiloxane-14, and ethylhexyl methoxycinnamate; silaoma MEA (Seiwa Kasei co., Ltd) which includes water, polysiloxane-14, ethylhexyl methoxycinnamate and butyl methoxydibenzoylmethane; silaoma MEP (S) (Seiwa Kasei co., Ltd), which includes water, ethylhexyl methoxycinnamate, diethylamino hydroxybenzoyl hexyl benzoate, and polysiloxane-14; suncaps 664(Particle Sciences, Inc.) including ethylhexyl methoxycinnamate, synthetic beeswax, PEG-20, carnauba (carnauba) wax, bis-PEG-12 dimethicone, beeswax, VP/eicosene copolymer, sorbitan tristearate, stearyl polyoxyethylene ether-100, and PEG-100 stearate; suncaps 903(Particle Sciences, Inc.) which includes ethylhexyl methoxycinnamate, benzophenone-3, synthetic beeswax, PEG-20, carnauba (carnauba) wax, bis-PEG-12 dimethicone, beeswax, VP/eicosene copolymer, sorbitan tristearate, stearyl polyoxyethylene ether-100, and PEG-100 stearate; UV Pearls OMC (Sol Gel Technologies) including ethylhexyl methoxycinnamate and silica; OMC-BMDBM (Sol Gel technologies) including ethylhexyl methoxycinnamate, butyl methoxydibenzoylmethane, and silica; tinosorb S Aqua (BASF), which includes bisethylhexyloxyphenol methoxyphenyl triazine and polymethyl methacrylate; hybrid ABOS (Kobo), which includes polymethyl methacrylate, butyl methoxydibenzoylmethane, and octyl salicylate; and Hybrid ABOMC (Kobo), which includes polymethyl methacrylate, butyl methoxydibenzoylmethane, and ethylhexyl methoxycinnamate.

Polydimethylsiloxane

The compositions of the present invention may comprise from about 2% to about 45%, preferably from about 3% to about 40%, more preferably from about 4% to about 30%, still more preferably from about 4.5% to about 20%, and most preferably from about 4.5% to about 10%, for example from about 3%, about 3.5%, about 4%, about 4.5%, about 5%, about 5.5%, about 6%, about 6.5%, about 7%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, about 10%, or any range therebetween, polydimethylsiloxane, by weight of the composition. In particular, the polydimethylsiloxane may be a single polydimethylsiloxane or a blend of two or more polydimethylsiloxanes disposed in the oil phase of the composition. Preferably, the polydimethylsiloxane in the composition of the present disclosure is a low viscosity polydimethylsiloxane. In some embodiments, the polydimethylsiloxane in the compositions of the present disclosure is non-volatile.

As used herein, the term "polydimethylsiloxane" means a polydimethylsiloxane compound having the formula:

polydimethylsiloxanes can be made at a variety of viscosities ranging from about 0.5cSt to 2 million cSt, depending on molecular mass. Specifically, when the molecular weight is very low, the polydimethylsiloxane is in the form of a thin pourable liquid, and when the molecular weight is very high, the polydimethylsiloxane is in the form of a thick rubbery semi-solid. Low viscosity polydimethylsiloxanes are commonly used as carriers in skin care compositions for delivering a wide variety of ingredients to the skin without leaving a heavy greasy feel. However, it also has some disadvantages, for example, such low viscosity polydimethylsiloxanes can be considered dry. As used herein, the term "low viscosity polydimethylsiloxane" means a polydimethylsiloxane having a relatively low kinematic viscosity, preferably a kinematic viscosity of no more than about 1000cSt, and more preferably no more than about 500 cSt.

The inventors of the present invention have surprisingly found that high SPF uv protection compositions having unexpectedly good balanced skin feel can be formed by using low viscosity polydimethylsiloxanes in combination with other ingredients such as particulate materials.

The kinematic viscosity of the dimethicone useful in the compositions of the present disclosure, as measured by rheological methods, may range from about 0.5cSt to about 1000cSt, preferably from about 1cSt to about 500cSt, more preferably from about 1.5cSt to about 350cSt, still more preferably from about 2cSt to about 200cSt, still more preferably from about 3.5cSt to about 100cSt, still more preferably from about 3.5cSt to about 50cSt, and most preferably from about 3.5cSt to about 20cSt, such as about 0.5cSt, about 0.65cSt, about 1cSt, about 1.5cSt, about 2cSt, about 2.5cSt, about 3cSt, about 3.5cSt, about 4cSt, about 4.5cSt, about 5cSt, about 6cSt, about 7cSt, about 8cSt, about 9cSt, about 10cSt, about 12cSt, about 4cSt, about 20cSt, about 300cSt, about 30cSt, about 20cSt, about 300cSt, or any therebetween. Without being bound by theory, it is believed that the preferred concentration of polydimethylsiloxane and/or the preferred kinematic viscosity of polydimethylsiloxane may result in additional benefits, such as higher stability, even better sensory benefits, suitable moisturization efficacy perception, and/or product aesthetics. More specifically, it may help to keep the formulation stable when exposed to low temperature conditions and prevent instability caused by other ingredients (e.g., particulate materials).

Particularly useful low viscosity polydimethylsiloxanes includeSF 5、SF 50、SF 500、SF 1000、Clearco PSF 0.65cSt、PSF 1.5cSt、PSF 2cSt、DowCorningFluid 0.65cs, Dow CorningFluid 1.5cs, Dow CorningPMX-200 Silicone fluid 5cst, Dow CorningFluids 10cSt, GE SF96-5, GE SF96-10cs, GE SF96-20cs, Momentive SF96-5, Momentive SF96-10, Momentive SF96-20, Rhodorsil 47V5, Rhodorsil 47V10, Rhodorsil 47V20, Shinetsu DM5, Shinetsu DM10, Shinetsu DM 20.

Particulate material

The compositions of the present invention may comprise from about 3% to about 45%, preferably from about 3.5% to about 40%, more preferably from about 4% to about 30%, still more preferably from about 4.5% to about 20%, and most preferably from about 4.5% to about 10%, for example about 3%, about 3.5%, about 4%, about 4.5%, about 5%, about 5.5%, about 6%, about 6.5%, about 7%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, about 10%, or any range therebetween, of particulate material (also referred to as cosmetic powder or dry powder), by weight of the composition.

Non-limiting examples of suitable particulate materials include inorganic powders, organic powders, composite powders, optical brightener particles, and mixtures of any of the foregoing. These particles may be, for example, plate-shaped, spherical, elongated or needle-shaped, or irregularly shaped; surface coated or uncoated; porous or non-porous; charged or uncharged. In some embodiments, the particulate material is hydrophobically coated.

Suitable inorganic particulate materials include, but are not limited to, talc, silicates, silica, iron oxide, titanium dioxide, zinc oxide, and any mixtures thereof.

Suitable organic particulate materials include, but are not limited to, polymeric particles selected from methylsilsesquioxane resin microspheres, such as Tospearl^TM145A、Tospearl^TMCF 600; polymethyl methacrylate microspheres, e.g. Micropearl^TMM100 (Seppic); spherical particles of crosslinked polydimethylsiloxane, e.g. Trefil^TME506C or Trefil^TME505 c (dow Corning toray silicone); spherical particles of polyamides, e.g. nylon-12 and Orgasol^TM2002D NatC05 (Atochem); polystyrene microspheres, e.g. under the name Dynospheres^TMDyno granules sold, and under the name FloBead^TMEthylene acrylic acid sold by EA209(Kobo)An ester copolymer; aluminum starch octenyl succinate, e.g. Dry Flo^TM(Akzo Nobel); starches, such as tapioca starch, distarch phosphate, tapioca starch, acetyl-substituted starch, adipic acid-substituted starch, hydroxypropylated starch, corn starch, 2-hydroxypropyl ether modified starch, hydroxypropyl starch phosphate; cyclodextrins and derivatives thereof; polymethylsilsesquioxane coated cassava particles, e.g. Dry Flo TS^TM(Akzo Nobel); polyethylene microspheres, e.g. Microthene^TMFN510-00(Equistar), silicone resins, polymethylsilsesquioxane silicone polymers, flakes made from L-lauroyl lysine, and mixtures thereof.

In particular, the particulate material may be selected from: sugar derivatives, silica, silicates, carbonates, siloxanes and any mixtures thereof. More specifically, the sugar derivative may be selected from the group consisting of aluminum starch octenylsuccinate, distarch phosphate, tapioca starch, acetyl-substituted starch, adipic acid-substituted starch, hydroxypropylated starch, corn starch, 2-hydroxypropyl ether modified starch, hydroxypropyl starch phosphate, cyclodextrin and derivatives thereof, polymethylsilsesquioxane coated starch such as polymethylsilsesquioxane coated tapioca starch, and any combination thereof; and/or the silicate may be selected from talc, kaolin and combinations thereof; and/or the carbonate may be selected from magnesium carbonate, calcium carbonate, and combinations thereof; and/or the siloxane may be selected from the group consisting of vinyl dimethicone/methicone silsesquioxane crosspolymer, polysiloxane, polymethylsilsesquioxane, diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane crosspolymer, and any combination thereof.

In some embodiments, the average diameter of the longest sides of individual particles of the particulate material is in a range between about 1 micron and about 150 microns, preferably less than about 75 microns, and more preferably less than about 50 microns, such as about 1 micron, about 2 microns, about 3 microns, about 4 microns, about 5 microns, about 1 micron, about 10 microns, about 15 microns, about 30 microns, or any range therebetween.

Weight ratio between low viscosity polydimethylsiloxane and particulate material

In some embodiments, the weight ratio of dimethicone to particulate material in the skin care composition is between about 1:2 and about 2:1, preferably between about 1:1.5 and about 1.5:1, more preferably between about 1:1.2 and about 1.2:1, and most preferably between 1:1.1 and 1.1:1, such as about 1:2, about 1:1.8, about 1:1.5, about 1:1.3, about 1:1.2, about 1:1.1, about 1:1.05, about 1:1, about 1.05:1, about 1.1:1, about 1.2:1, about 1.3:1, about 1.5:1, about 1.8:1, about 2:1, or any range therebetween.

Without being bound by theory, it is believed that preferred concentrations and/or preferred types of polydimethylsiloxane (e.g., polydimethylsiloxane, 5cSt) and particulate material (e.g., polymethylsilsesquioxane or polymethylsilsesquioxane coated starch) and/or preferred ratios of polydimethylsiloxane to particulate material (e.g., between 1:1.1 and 1.1: 1) may result in additional benefits such as higher stability, even better sensory benefits, suitable moisturization perception, and/or product aesthetics.

Fatty alcohols

The compositions of the present disclosure may comprise one or more fatty alcohols. The fatty alcohols typically include monohydric alcohols having 8 to 22 carbon atoms, although longer chain alcohols of greater than 30 carbon atoms may be used. The fatty alcohol may be saturated or unsaturated. The fatty alcohol may be straight chain or branched. In particular, the composition may comprise a linear saturated aliphatic alcohol having terminal hydroxyl groups. Suitable fatty alcohols include decyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, cetearyl alcohol, arachidyl alcohol, behenyl alcohol, and the like. The phase may comprise about 0.1%, 0.5%, 1%, 1.5%, 2%, 3%, 5% to about 5%, 7.5%, 10%, 15%, 20% fatty alcohol.

Alternatively, the compositions of the present disclosure may be substantially free of one or more fatty alcohols or any fatty alcohol. In particular, the compositions of the present disclosure may be substantially free of fatty alcohols selected from the group consisting of cetyl alcohol, stearyl alcohol, cetearyl alcohol, behenyl alcohol, and any combination thereof.

In the context of the present disclosure, the expression "substantially free" means that the concentration of an ingredient is no more than about 1%, preferably about 0.8%, more preferably about 0.5%, still more preferably about 0.3%, still more preferably about 0.2%, still more preferably about 0.1%, and most preferably about 0.01% by weight of the composition.

In some embodiments, the composition comprises from 0% to about 0.5%, preferably from 0% to about 0.2%, still more preferably from 0% to about 0.1%, still more preferably from 0% to about 0.05%, and most preferably from 0% to about 0.01%, e.g., 0%, about 0.01%, about 0.05%, about 0.1%, about 0.2%, about 0.3%, about 0.4%, about 0.5%, or any range therebetween, by weight of the composition, of fatty alcohol.

Without being bound by theory, it is believed that the absence of fatty alcohols in the skin care composition may result in additional benefits such as higher stability, even better sensory benefits, proper moisturization efficacy perception, and/or product aesthetics.

Emulsifier

The compositions of the present disclosure may also comprise from about 0.01% to about 40%, by weight of the composition, of an emulsifier. The emulsifier may be nonionic, anionic or cationic.

Suitable emulsifiers may be selected from ether-based emulsifiers, ester-based emulsifiers, polymeric emulsifiers, silicone emulsifiers, and any combination thereof.

The ether-based emulsifier can be selected from ethers of polyethylene glycol and fatty alcohol, ethers of polyethylene glycol and glycosylated fatty alcohol, C_12-30Ethers of alcohols with glycerol or polyglycerol, alkylene oxide-modified C_12-30Ethers of alcohols with glycerol or polyglycerol, C_12-30Ethers of fatty alcohols and sucrose or glucose, ethers of sorbitol and/or sorbitan and alkoxylated sorbitan, ethers of polyethylene glycol and cholesterol and any combination thereof.

The ester-based emulsifier can be selected from the group consisting of esters of polyethylene glycol and fatty acid, esters of polyethylene glycol and glycosylated fatty acid, C_12-30Esters of fatty acids and glycerol or polyglycerol, sucrose or glucose and C_12-30Esters of fatty acids, pentaerythritol and C_12-30Esters of fatty acidsSorbitol and/or sorbitan and C_12-30Esters of fatty acids, C_12-30Esters of fatty acids and alkoxylated ethers of sorbitol and/or sorbitan and any combination thereof;

non-limiting examples of emulsifiers for use herein may include: polyethylene glycol 20 sorbitan monolaurate (polysorbate 20), steareth-20, cetyleth-20, PPG-2 methyl glucose ether distearate, cetyleth-10, polysorbate 80, cetyl phosphate, potassium cetyl phosphate, diethanolamine cetyl phosphate, polysorbate 60, glyceryl stearate, PEG-100 stearate, polyoxyethylene 20 sorbitan trioleate (polysorbate 85), sorbitan monolaurate, sodium polyoxyethylene 4 lauryl ether stearate, polyglyceryl-4 isostearate, hexyl laurate, PPG-2 methyl glucose ether distearate, cetyleth-10, diethanolamine cetyl phosphate, glyceryl stearate, glyceryl monostearate, glyceryl stearate, glyceryl monostearate, glyceryl stearate, PEG 40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, glyceryl polyoxyethylene ether-25 PCA isostearate and mixtures thereof.

Silicone emulsifiers may be used. It is also possible to use silicone emulsifiers of the linear or branched type. Specific useful silicone emulsifiers include polyether-modified silicones such as KF-6011, KF-6012, KF-6013, KF-6015, KF-6017, KF-6043, KF-6028, and KF-6038, and polyglycerolated linear or branched silicone emulsifiers such as F-6100, KF-6104, and KF-6105; all from Shin Etsu.

Polymeric emulsifiers may also be used. Preferably, the composition may comprise from about 0.02% to about 30%, from about 0.03% to about 20%, from about 0.05% to about 5%, more preferably from about 0.1% to about 2%, still more preferably from about 0.2% to about 1%, and most preferably from about 0.3% to about 0.8%, for example from about 0.3%, about 0.35%, about 0.4%, about 0.45%, about 0.5%, about 0.55%, about 0.6%, about 0.65%, about 0.7%, about 0.75%, about 0.8%, or any range therebetween, of a polymeric emulsifier by weight of the composition.

Preferred polymeric emulsifiers may be selected from cross-linked alkyl acrylates, acryloyl dimethyl taurate polymers, and any combination thereof. The crosslinked alkyl acrylate is a crosslinked polymer in which the comonomer consists of at least one of the following: acrylic acid, sodium acrylate, methacrylic acid or alkyl acrylate, and acryloyl dimethyl taurate polymer means a homopolymer, copolymer or crosslinked polymer, the monomers of which are at least partially composed of acryloyl dimethyl taurate monomers.

Specifically, the cross-linked alkyl acrylate is selected from the group consisting of acrylate/C10-30 alkyl acrylate crosspolymer, acrylate/C12-13 alkyl methacrylate/methoxyethyl acrylate crosspolymer, acrylate/ethylhexyl acrylate/glycidyl methacrylate crosspolymer, acrylate/PEG-4 dimethacrylate crosspolymer, acrylate/steareth-20 methacrylate crosspolymer, acrylate/vinyl isodecanoate crosspolymer, acrylate/vinyl neodecanoate crosspolymer, allyl methacrylate/ethylene glycol dimethacrylate crosspolymer, and combinations thereof, Allyl methacrylate crosspolymer, butyl acrylate/ethylene glycol dimethacrylate crosspolymer, C8-22 alkyl acrylate/methacrylic acid crosspolymer, ethylene glycol dimethacrylate/vinyl alcohol crosspolymer, lauryl methacrylate/ethylene glycol dimethacrylate crosspolymer, lauryl methacrylate/sodium methacrylate crosspolymer, methacrylic acid/PEG-6 methacrylate/PEG-6 dimethacrylate crosspolymer, PEG/PPG-5/2 methacrylate/methacrylic acid crosspolymer, stearyl methacrylate/lauryl methacrylate crosspolymer, and any combination thereof; and/or the acryloyldimethyl taurate polymer may be selected from acrylamide/acryloyldimethyl taurate copolymer, acrylamide/acryloyldimethyl taurate/acrylic acid copolymer, acryloyldimethyl taurate/behenyl polyoxyethylene ether-25 methacrylate crosspolymer, acryloyldimethyl taurate/carboxyethyl acrylate crosspolymer, acryloyldimethyl taurate/lauryl polyoxyethylene ether-7 methacrylate copolymer, acryloyldimethyl taurate/stearyl polyoxyethylene ether-25 methacrylate crosspolymer, acryloyldimethyl taurate/stearyl polyoxyethylene ether-8 methacrylate copolymer, acryloyldimethyl taurate/vinyl formamide copolymer, or mixtures thereof, Acrylyldimethylammonium taurate/VP copolymer, polyacryloyldimethylammonium taurate dimethylacrylamide/sodium acryloyldimethyltaurate cross-linked polymer, HEA/sodium acryloyldimethyltaurate/stearylpolyoxyether-20 methacrylate copolymer, hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer, polyacryloyldimethyltaurate polyoxymethylenemelamine, sodium acrylate/acryloyldimethyltaurate/dimethylacrylamide cross-linked polymer, sodium acrylate/sodium acryloyldimethyltaurate/acrylamide copolymer, sodium acryloyldimethyltaurate/PEG-8 diacrylate cross-linked polymer, sodium acryloyldimethyltaurate/acrylamide/VP copolymer, poly (ethylene glycol-co-vinyl ether-vinyl, Sodium acryloyldimethyl taurate/methacrylamide lauric acid copolymer, sodium acryloyldimethyl taurate/VP cross-linked polymer, sodium polyacryl dimethyl taurate and any combination thereof.

A non-limiting example of a polymeric emulsifier is Carbopol 1382^TM、Carbopol Ultrez 20^TM、Carbopol Ultrez 21^TM、Pemulen TR II^TM、Pemulen TR I^TM、Pemulen EZ4U^TM、Aculyn 88、Aculyn 38、Stabylen 30、Aqua Keep 10SH-NFC、AVC、SEPINOV^TMEMT 10、SIMULGEL^TMNS、SEPIPLUS^TMS, EMT polymer, and the like.

In some preferred embodiments, the compositions of the present disclosure comprise an acrylate/C10-30 alkyl acrylate crosspolymer and/or hydroxyethyl acrylate (and) acryloyldimethyl (and) sodium taurate copolymer. The use of such polymeric emulsifiers surprisingly provides additional sensory benefits. Without being bound by theory, it is believed that they also act as thickeners to prevent the use of other thickeners/emulsifiers that may adversely affect the sensory perception of the product, in other words, they can emulsify oil and water, and also can thicken the composition by using a single material.

Without being bound by theory, it is believed that preferred concentrations and/or preferred types of emulsifiers produce additional benefits such as higher stability, even better sensory benefits, proper moisturization efficacy perception, higher cost benefits, and/or product aesthetics.

PH regulator

The compositions of the present disclosure may also include a pH adjusting agent to control the pH of the composition. Specifically, the pH of the compositions of the present disclosure ranges from about 5 to about 8, preferably from about 5.2 to about 7.8, and more preferably from about 5.4 to about 7.6, such as about 5.4, about 5.6, about 5.8, about 6.0, about 6.2, about 6.4, about 6.6, about 6.8, about 7.0, about 7.2, about 7.4, about 7.6, and any range therebetween.

Specifically, the composition may further comprise from about 0.01% to about 5%, preferably from about 0.1% to about 3%, more preferably from about 0.3% to about 2%, still more preferably from about 0.4% to about 1.8%, and most preferably from about 0.5% to about 1.6%, such as from about 0.4%, about 0.5%, about 0.6%, about 0.7%, about 0.8%, about 0.9%, about 1.0%, about 1.1%, about 1.2%, about 1.3%, about 1.4%, about 1.5%, about 1.6%, and any range therebetween, of a pH adjusting agent selected from the group consisting of potassium hydroxide, sodium hydroxide, ammonium hydroxide, aminomethyl propanol, triethanolamine, tetrahydroxypropyl ethylenediamine, and any combination thereof, by weight of the composition.

When a polymeric emulsifier and a pH adjusting agent are used, it is preferred, and sometimes necessary in the case of certain compositions, to formulate the compositions of the present disclosure in an appropriate ratio of polymeric emulsifier to pH adjusting agent. In some embodiments, the weight ratio of the polymeric emulsifier to the pH adjuster is between about 1:5 and about 1:0.5, preferably between about 1:3 and about 1:1, such as about 1:3, about 1:2.5, about 1:2, about 1:1.5, about 1:1.1, and any range therebetween.

Without being bound by theory, it is believed that preferred concentrations and/or preferred types of pH adjusting agents produce more preferred results, such as higher stability, even better sensory benefits, proper moisturization efficacy perception, higher cost benefits, and/or product aesthetics.

Thickening agent

If the emulsifier in the composition of the present invention also serves as a thickener, the composition may further comprise a thickener (thickner), also known as a thickening agent (thickening agent), or an additional thickener. If present, the compositions of the present invention may comprise from about 0.1% to about 5%, or alternatively from about 0.2% to about 2%, of a thickener or additional thickener. Suitable classes of thickeners include, but are not limited to, carboxylic acid polymers, polyacrylamide polymers, sulfonated polymers, copolymers thereof, hydrophobically modified derivatives thereof, and mixtures thereof.

One preferred thickener for use in the present invention is an acrylate-crosslinked siloxane copolymer network (sometimes also referred to as a "polyacrylate siloxane copolymer network"). Suitable thickeners include carboxylic acid polymers, polyacrylamide polymers or copolymers, sulfonated polymers, gums, clays, cellulose or modified cellulose compositions, and the like.

Other optional ingredients

The compositions of the present invention may comprise a variety of optional ingredients known for use in personal care compositions, provided that one or more of the optional ingredients do not unduly alter product stability, aesthetics or performance. When incorporated into compositions, the optional ingredients should be suitable for use in contact with human keratinous tissue without undue toxicity, incompatibility, instability, allergic response, and the like, within the scope of sound judgment. The compositions herein may comprise from about 0.0001% to about 50%; about 0.01% to about 20%; or alternatively from about 0.01% to about 10% of optional ingredients. Some non-limiting examples of optional ingredients include abrasives, absorbents, opacifiers, colorants (e.g., pigments, dyes, and lakes), particles, essential oils, anticaking agents, foaming agents, antifoaming agents, oil control agents, binders, biological additives, vitamins, minerals, peptides, sugar amines, flavonoids, antioxidants, preservatives, plant extracts, phytosterols, protease inhibitors, tyrosinase inhibitors, exfoliants, skin lightening agents, sunless tanning agents, anti-acne actives, anti-cellulite actives, anti-wrinkle actives, phytosterols and/or phytohormones, N-acyl amino acid compounds, antimicrobials, antifungals, humectants, emollients, humectants, lubricants, fragrances, anti-dandruff agents, buffering agents, bulking agents, chelating agents, antimicrobials, and/or plant hormones, Denaturants, astringents, external analgesics, anti-inflammatory agents, sunscreens, film formers and/or polymers that facilitate the film-forming characteristics and substantivity of the composition, propellants, reducing agents, chelating agents, conditioning agents, and combinations thereof.

In some embodiments, the compositions of the present disclosure may be substantially free of ethanol. Without being bound by theory, it is believed that the absence of ethanol in the compositions of the present disclosure produces more preferred results, such as even better sensory benefits and/or product aesthetics.

In some embodiments, the present disclosure provides a composition comprising:

a) 20% to 45% by weight of the composition of one or more uv-blocking actives being phenylbenzimidazole sulfonic acid, homosalate, octocrylene, and butyl methoxydibenzoylmethane, wherein the concentration of phenylbenzimidazole sulfonic acid is 2% to 5% by weight of the composition, the concentration of homosalate is 6% to 10% by weight of the composition, the concentration of octocrylene is 7% to 11% by weight of the composition, and the concentration of butyl methoxydibenzoylmethane is 1% to 5% by weight of the composition;

b) from 4.5% to 6% by weight of the composition of a polydimethylsiloxane having a kinematic viscosity of from 3.5cSt to 20cSt as measured by a rheological method;

c) from 4.5% to 6% by weight of the composition of polymethylsilsesquioxane coated starch or polymethylsilsesquioxane;

d) 0.3% to 0.8%, by weight of the composition, of an acrylate/C10-30 alkyl acrylate crosspolymer; and

e) from 0.5% to 0.8% by weight of the composition of sodium hydroxide.

Test method

Test 1: adhesion method

The method provides a suitable means for determining the tackiness of the sample composition tested. The method uses a texture analyzer to contact the probe with a film formed from the sample composition. The texture analyzer then measures the force required to membrane separate the probe from the sample composition. The change in the viscosity, time-weighted area, average time to break and time to break can all be determined by this method. The adhesion method was configured to run for a period of 100 minutes. Without being limited by theory, it is believed that the tack characteristics exhibited by the sample composition during the tack test approximate the tack characteristics exhibited by the composition within the first few minutes (e.g., less than 10 minutes, between 30 seconds and 5 minutes, or between 1 minute and 3 minutes) of use of the sample composition by the user.

Fig. 1 shows an exemplary test apparatus for adhesion testing. The adhesion of the film formed from the sample composition was measured using a ta.xt2i brand Texture analyzer (available from Texture Technologies Corporation (MA))50 or equivalent. The texture analyser is equipped with a viscous probe 52 in the form of a 12.75mm diameter acrylic cylinder with a flat surface. During testing, the flat surface of probe 52 is brought into contact with the surface of the film of composition. Thus, the flat surface of the probe and the surface of the membrane must be parallel to each other during testing to ensure that the membrane has adequate contact over the entire active test surface of the probe 52. The film is prepared by filling or overfilling (and then pulling down) a rectangular channel 54 (e.g., 25cm long x 30mm wide x 0.25mm deep) with the composition to be tested.

The test was performed using the adhesive test protocol at a pre-test speed of 0.10mm/s, a test speed of 0.10mm/s and a post-test speed of 1.0 mm/s. The applied force was 200g, the return distance was 4mm, and the contact time was 5.0 s. The trigger type for the specified sample contact was set to automatic and the trigger force was 5.0 g. The test was run and run at the following time increments immediately after the membrane was prepared: <1 minute (i.e., immediately after membrane preparation), 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes, 80 minutes, and 100 minutes. Each time point was run on a previously undisturbed/untested area of the sample. Each sample was run in triplicate and the average was recorded.

Data extraction uses the portion of the data collected as the probe is pulled up from the sample. The viscous force is the peak force for each test run.

The time-weighted force-receiving area is determined by:

wherein:

t1 — the later of the two times in the time range in which the measurement was made;

t2 — the earlier of the two times in the time range in which the measurement was made;

p1-the peak force in grams at time 1 of the pair of times being calculated; and

p2 is the peak force in grams at time 2 of the pair of times being calculated.

When calculating the difference between t1 and t2 or between P1 and P2, the absolute value of the result is used to calculate the time-weighted force-receiving area. The time weighted force area is reported as the sum of the individual time weighted force area values calculated for each of the 8 time intervals (<1min to 10min, 10min to 20min, 20min to 30min, etc.).

The break time is determined by the width of the force curve. The onset time of the fracture time calculation is the time at which the sign of the force applied by the texture analyzer changes from negative at time zero (i.e., the start of the test) to positive and the force decays from the peak force back to 0.0+/-0.02 as the fracture time. The average break time was recorded as the average of the break time at 60 minutes, 80 minutes and 100 minutes. The change in break time is the difference between the initial break time and the break time at 100 minutes.

And (3) testing 2: rheological method

This method provides a suitable means of measuring dynamic viscosity at a given shear rate. The instrument used in the method was a Discover HR-2 rheometer from TA Instruments or equivalent. The instrument was set up to perform a rotational ramp up under controlled stress conditions (from 0 to 800Pa in 240 seconds) using a cross-hatched parallel plate geometry with a diameter of 40mm and a gap of 0.9 mm. The temperature was set to 25 ℃. The instrument protocol was set to collect 100 data points in a logarithmic distribution.

After performing the auto-calibration, approximately 5 grams of sample was placed in the center of the plate. The plate was positioned to provide a 0.9mm gap and any excess material squeezed out of the peripheral gap was carefully trimmed away. The measurement is then started. At the end of the run, the data file is saved for subsequent mapping and analysis. Dynamic viscosity is recorded as at 100S^-1Under shear stress or close to 100S^-1The value in Pa S at shear stress. Kinematic viscosity can be calculated by dividing the measured dynamic viscosity by the density of the sample at 25 ℃.