WO2023133988A1 - Powder-fixing and color-locking synergistic double-wrapped cosmetic composition - Google Patents

Abstract

Disclosed in the present invention is a powder-fixing and color-locking synergistic double-wrapped cosmetic composition. The cosmetic composition forms a very strong spatial network structure by means of the organic combination of a macromolecular silicon resin and siloxane groups in macromolecular polyurethane-7. Since the structure simultaneously contains soft polyurethane groups and non-polar silicon-hydrogen bonds, the structure can be compliantly attached to a cuticle on the surface of skin. In addition, a powder which has been subjected to double treatment of the silicon resin and polyurethane-7, polyurethane and silicon resin which have been subjected to surface treatment with a large amount of powder, and reticular macromolecular silicon resin and polyurethane-7 in the formula are interwoven together by means of a stronger intermolecular acting force. Finally, the treated powder can be tightly embedded in a film of the interpenetrating network, such that as well as being soft and skin-friendly, a product is firmly attached to the surface of the skin, and finally, from the macroscopic perspective, not only is the durability of the product improved, but the color rendering degree of the product can also be significantly improved and the darkness of the product can also be improved.

Description

A double-wrapping cosmetic composition with solid powder, color-locking and synergistic synergy technical field

The invention relates to the technical field of cosmetics, in particular to a double-wrapping cosmetic composition with solid powder, color-locking and synergistic effect.

Background technique

In order to improve the compatibility of base makeup products including but not limited to foundation, BB cream, makeup cream, base cream and other texture products on the skin and the performance indicators of the products on the skin. At present, most of the technologies in this field use the film-forming technology of silicone resin to make the foundation more durable, and at the same time bring the effect of not taking off makeup, but the compatibility of silicone resin with skin and powder is not good enough, resulting in long-lasting makeup. At the same time, it will bring a certain sense of dryness or tightness.

The powder surface coating composition is also a technical means used in this type of cosmetics to fix the powder and improve the overall dullness of the product, which includes only one surface treatment technology and two or more multi-component surface coatings processing technology. However, most of the powder surface treatment technologies in this technical field are still in the stage of simple single AS powder treatment.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a double-wrapped cosmetic composition with solid powder, color-locking and synergistic synergy. The present invention is realized through the following technical solutions.

A double-enveloped cosmetic composition with solid powder and color-locking synergistic synergistic effect, which is used for cosmetic facial compositions;

a) at least one polyurethane-7A) obtainable by reacting an isocyanate A1HMDI with a hydroxyl-functionalized polyorganosiloxane A2 and with a polyester polyol polymer A3;

b) Polymethylsilicone B).

Preferably, monoisocyanate R—N=C=O, diisocyanate O=C=N—R—N=C=O, polyisocyanate, etc. are included, and HMDI hexamethylene diisocyanate is preferably used.

As a preferred, hydroxyl-functionalized polyorganosiloxane, the structural formula is HO[(CH3)2SiO]nH, which is a linear polymer with repeated silicon-oxygen bonds as the main chain, methyl groups as side groups, and hydroxyl-terminated linear polymers. .

As preferably, the prepolymer A1) used in the preparation of polyurethane is preferably selected from polyether polyols, polycarbonate polyols, polyether polycarbonate polyols and/or polyester polyols Or a variety of polyols and polyisocyanates are obtained by reacting.

Preferably, the polymethyl silicone resin B) is a methyl MQ type silicone resin, wherein the methyl MQ type silicone resin is a new type of organic silicon material with a three-dimensional nonlinear structure formed by its molecules with Si-O bonds as a skeleton .

As preferred, the structural formula of methyl MQ type silicone resin is [(CH3)3Si01/2]a[Si04/2]b, wherein [(CH3)3SiO1/2] is a monofunctional siloxane chain M, [SiO4 /2] is the tetrafunctional siloxane polycondensation link Q, and the molar ratio of M and Q links is 0.6-0.9, its molar mass is generally 1000-8000, the amount of M links and Q links in the molecular structure The ratio and structure determine the properties and application range of silicone resin.

Preferably, the solid component in the polyurethane-7A) accounts for 0.1% to 5% by weight of the cosmetic composition; the solid component in the polymethyl silicone resin B) accounts for 1% to 5% by weight of the cosmetic composition. 10%.

Preferably, the pigments include titanium dioxide, red iron oxide, yellow iron oxide and black iron oxide.

Preferably, it also includes at least one of volatile silicone oil, volatile alkane, water-in-silicone oil emulsifier, polyol, surfactant, preservative, essence, moisturizer and active substance.

Preferably, the application of a double-wrapping cosmetic composition comprising a solid powder-locking color synergistic synergistic effect in skin-fixing makeup.

The beneficial effects of the present invention are:

The cosmetic composition forms a very strong spatial network structure through the organic combination of the macromolecular silicone resin and the siloxane group in the macromolecular polyurethane-7, because the structure contains both soft polyurethane groups and non- The polar silicon hydrogen bond can have a very good conformability with the stratum corneum on the skin surface, so it can form an invisible, durable, skin-adhesive and breathable film on the skin surface like a net.

At the same time, the powder in this formula is double-treated with silicone resin and polyurethane-7. With the volatilization of volatile oils, a large amount of polyurethane and silicone resin on the surface of the powder and the network macromolecular polymers in the formula such as silicon Resin, polyurethane-7 interweaves together through stronger intermolecular forces, and finally these treated powders can be tightly embedded in the interpenetrating network film, which is soft and skin-friendly and can firmly adhere to the skin Finally, from a macro perspective, it not only improves the durability of the product, but also significantly improves the color rendering of the product and improves the dullness of the product.

Description of drawings

Fig. 1 is the structural formula schematic diagram of isocyanate compound among the present invention;

Fig. 2 is the structural formula schematic diagram of polyorganosiloxane in the present invention;

Fig. 3 is a schematic diagram of the structure of polyester polyol in the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are some of the embodiments of the present invention, not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

A double-wrapping cosmetic composition with solid powder, color-locking and synergistic synergistic effects, specifically the double-wrapping cosmetic composition DUPLEFIX-1, which is used for makeup facial compositions;

a) at least one polyurethane-7A) obtainable by reacting an isocyanate A1HMDI with a hydroxyl-functionalized polyorganosiloxane A2 and with a polyester polyol polymer A3;

b) Polymethylsilicone B).

Preferable examples include monoisocyanate R-N=C=O, diisocyanate O=C=N-R-N=C=O and polyisocyanate, among which HMDI hexamethylene diisocyanate is preferably used.

Suitable organic polyisocyanates are aliphatic, aromatic or cycloaliphatic polyisocyanates known to the person skilled in the art having an NCO functionality of 2 or greater.

Non-limiting examples of such polyisocyanates are 1,4-butylene diisocyanate, 1,6-hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), 2,2,4 or 2,4,4-Trimethylhexamethylene diisocyanate, bis(4,4-isocyanatocyclohexyl)methane isomers or mixtures of these isomers, 1,4-cyclohexylene diisocyanate , 4-isocyanatomethyl-1,8-octane diisocyanate (nonane triisocyanate), 1,4-benzene diisocyanate, 2,4 or 2,6-toluene diisocyanate, 1,5-naphthalene 2,2 or 2,4 or 4,4-diphenylmethane diisocyanate, 1,3 or 1,4-bis(2-isocyanatoprop-2-yl)benzene (TMXDI), 1, 3-Bis(isocyanatomethyl)benzene (XDI) and alkyl 2,6-diisocyanatohexanoate (lysine diisocyanate) with C1-C8-alkyl groups.

In addition to the abovementioned polyisocyanates, it is also possible to use polyisocyanates having the structure of uretdione, isocyanurate, urethane, allophanate, biuret, iminooxadiazinedione or oxadiazinetrione Modified diisocyanates with functionality ≥ 2, and proportionate mixtures of these components.

Hexamethylene diisocyanate, isophorone diisocyanate and mixtures of the aforementioned diisocyanates are particularly preferred.

As a preferred, hydroxyl-functionalized polyorganosiloxane, the structural formula is HO[(CH3)2SiO]nH, which is a linear polymer with repeated silicon-oxygen bonds as the main chain, methyl groups as side groups, and hydroxyl-terminated linear polymers. .

The composition according to the invention comprises at least one polysiloxane-polyurethane-polyester polymer formed by reacting a hydroxyl-functionalized polyorganosiloxane (preferably comprising two or more hydroxyl groups) with a diisocyanate compound product. Typically, the hydroxy-functional polyorganosiloxane corresponds to a structure having the formula I: wherein R at each occurrence is independently selected from a hydrogen atom, a hydroxyl group, and an optionally substituted hydrocarbyl group containing 1 to 10 carbon atoms , and in particular selected from substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aryl-alkyl or alkyl-aryl; preferably, R is selected from optionally substituted linear, cyclic or branched C1-6 alkyl or alkenyl, including but not limited to the groups methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, cyclohexyl, Vinyl, C1-8 allyl or aryl, arylalkyl or alkyl-aryl, including but not limited to phenyl, benzyl, tolyl, xylyl; wherein each of the above groups R can be any is optionally substituted by: one or more heteroatoms including oxygen, nitrogen, phosphorus and halogens, especially fluorine, as represented by fluoroalkyl (perfluoroalkyl), such as monofluoromethyl, di Fluoromethyl, trifluoromethyl, perfluorophenyl, and C1-6 substituted aminoalkyl groups, including those corresponding to the formulas -(CH2)1-6-NRN and -(CH2)1-6-NRN(CH2) Those of 1-6-NRN, where RN is typically hydrogen, but can also be methyl, ethyl, propyl or equivalent groups, polyether groups, including but not limited to those corresponding to the formula -(CH2CH2O)n- Polyethylene oxide groups, propylene oxide groups corresponding to the formula -CH(CH3)CH2O)n- and combinations thereof and amine oxide, phosphate, hydroxyl, ester or carboxylate functional groups or Equivalents, wherein R may contain an additional group -L-OH, wherein L is a bond or a linking group; preferably, L is a linking group selected from divalent hydrocarbons having 1-10 carbon atoms, including divalent Alkyl, alkenyl, alkynyl, aryl, alkyl-aryl or aryl-alkyl, for example C1-10 alkyl, including but not limited to having the formula -(CH2)1-10-, preferably -(CH2 ) a divalent group of 1-6-, more preferably, L is -CH2CH2_CH2-, and wherein n is an integer of 0-5000, preferably 1-200, more preferably 10-100, even more preferably 10-50; preferably Preferably, R represents at least one or more methyl groups, more preferably, R represents all or quasi-all methyl groups, which means that R represents more than 90%, especially more than 95%, or even more than 98% of methyl groups base.

According to one embodiment of the invention, for example, the hydroxy-functionalized polyorganosiloxane comprises a polyorganosiloxane corresponding to the formula Methylsiloxane.

As preferred, polyester polyol is a general term for polymers obtained by polycondensation of polyols and polybasic acids, including polycarbonate, polyol, polyether polycarbonate, polyol or polyester polyol; the excess range of alcohol is 5% ~20% mole, depending on factors such as polyol type, polyester molecular weight and process conditions. As preferably, the prepolymer A1) used in the preparation of polyurethane is preferably selected from one or more of polyether polyols, polycarbonate polyols, polyether polycarbonate polyols or polyester polyols A wide variety of polyols are obtained by reaction with polyisocyanates, which will be explained in more detail below.

Particularly preferably, polyurethanes are obtained by using polymer polyether polyols or polymer polycarbonate polyols or polyether-polycarbonate polyols or polyester polyols, each of these polymers having a preferred Number average molecular weight of about 400 to about 6000 g/mol (here and for the molecular weight data below, the molecular weight is determined by gel permeation chromatography in tetrahydrofuran at 23° C. against polystyrene standards). Their use during the preparation of polyurethanes or polyurethane prepolymers will lead to the formation of corresponding polyether or polycarbonate or polyether-polycarbonate segments or polyester segments in the polyurethane as a result of the reaction with polyisocyanates , the polyurethane has the corresponding molecular weight of these segments. According to the invention, particular preference is given to polyurethanes obtained from polymer polyether diols or polymer polycarbonate diols or polyether-polycarbonate polyols or polyester polyols having a linear structure.

The waterborne polyurethanes A) according to the invention are preferably linear molecules, but may also be branched.

The number-average molecular weight of the aqueous polyurethanes A) preferably used according to the invention is, for example, from about 1,000 to 200,000, preferably from 5,000 to 150,000.

Preferably, the solid component in the polyurethane-7A) accounts for 0.1% to 5% by weight of the cosmetic composition; the solid component in the polymethyl silicone resin B) accounts for 1% to 5% by weight of the cosmetic composition. 18%.

Preferably, the polymethyl silicone resin B) is a methyl MQ type silicone resin, wherein the methyl MQ type silicone resin is a new type of organic silicon material with a three-dimensional nonlinear structure formed by its molecules with Si-O bonds as a skeleton .

As preferred, the structural formula of methyl MQ type silicone resin is [(CH3)3Si01/2]a[Si04/2]b, wherein [(CH3)3SiO1/2] is a monofunctional siloxane chain M, [SiO4 /2] is the tetrafunctional siloxane polycondensation link Q, and the molar ratio of M and Q links is 0.6-0.9, its molar mass is generally 1000-8000, the amount of M links and Q links in the molecular structure The ratio and structure determine the properties and application range of silicone resin.

Examples of MQ-type solid polysiloxane resins of the trimethylsiloxysilicate type include those sold by General Electric under the catalog SR1000, by Wacker under the catalog TMS 803, by Shin-Etsu under the name "KF7312J", by Examples of polysiloxane resins containing siloxysilicate MQ units, those sold by Dow Corning as "DC 749", "DC 593", also include phenylalkylsiloxysilicate resins such as benzene phenylpropyldimethylsiloxysilicate (Silshine 151 sold by General Electric Company). In particular, the preparation of this resin is described in patent US5817302.

Examples of T-type polysiloxane resins include polysilsesquioxanes having the formula (RSiO3/2)X(T unit), where x is greater than 100, and such that the group R is an alkane having 1 to 10 carbon atoms group, wherein the polysilsesquioxane may also contain Si-OH end groups. Preferably, polymethylsilsesquioxane resins can be used in which R represents a methyl group, for example: those sold by the company Wacker under the catalog Resin MK, such as Belsil PMS MK: containing repeating CH3SiO3/2 units (T units) Polymers, which can also contain up to 1% by weight of (CH3)2SiO2/2 units (D units) and have an average molecular weight of about 10000 g/mol, or those sold by the company SHIN-ETSU under the catalog KR-220L, which are sold by Composition of 11 T units having the formula CH3SiO3/2 with Si-OH end groups (silanols);

dimethyl units and have Si-OH end groups; or those sold as catalog KR-251, which contains 88% T units and 12% D dimethyl units and has Si-OH end groups. As resins comprising MQT units, in particular those cited in document US Pat. No. 5,110,890 are known. A preferred form of MQT-type resin is MQT-propyl resin (also known as MQTPr). In particular, such resins that can be used in the composition according to the invention are those described and prepared in the application WO 2005/075542, the content of which is incorporated herein by reference. Preferably, the MQ-T-propyl resin comprises the following units:

(i) (R13SiO1/2)a;

(ii) (R22SiO1/2)b;

(iii) (R3SiO1/2)c;

(iv) (SiO4/2)d;

Wherein, R1, R2 and R3 independently represent a hydrocarbon group (especially an alkyl group), a phenyl group, a phenylalkyl group or a hydroxyl group with 1-10 carbon atoms, preferably an alkyl group or a phenyl group with 1-8 carbon atoms , a is 0.05-0.5, b is 0-0.3, c is greater than zero, d is 0.05-0.6, a+b+c+d=1, and a, b, c and d are mole fractions, provided that siloxane More than 40 mole % of the groups R3 of the resin are propyl groups.

The silicone resins usable according to the invention are obtainable by a process comprising reacting A) with B):

A) MQ resin comprising at least 80 mole % of (R13SiO1/2)a and (SiO4/2)d units, R1 represents an alkyl, aryl, methanolyl or amino group with 1 to 8 carbon atoms, a and d is greater than zero and the ratio a/d is 0.5-1.5; and

B) Propyl T resin comprising at least 80 mole % of (R3SiO1/2)c units, R3 representing an alkyl, aryl, methanolyl or amino group with 1 to 8 carbon atoms, c greater than zero, provided that at least 40 mol% of R3 groups are propyl groups, wherein the A/B mass ratio is 95:5-15:85, preferably, the A/B mass ratio is 30:70. In particular, the compositions according to the invention comprise polysiloxane resins (preferably MQ) in concentrations of 1-20% by weight, preferably 5-10% by weight, relative to the total weight of the composition.

Preferably, the pigments include titanium dioxide, red iron oxide, yellow iron oxide and black iron oxide;

Examples of inorganic pigments that can be used in the present invention include oxides of titanium, zirconium or cerium and oxides of zinc, iron or chromium, iron blue, manganese violet, ultramarine blue and chromium hydrates;

Examples of organic pigments that can be used in the present invention include carbon black, D&C type pigments, containing cochineal, barium, strontium, calcium, aluminum or documents EP-A-542669, EP-A-787730, EP-A-787731 and WO - Lacquers of diketopyrrolopyrrole (DPP) described in A-96/08537.

The pigments used in the cosmetic composition according to the invention may be surface treated with a hydrophobic treatment agent;

The hydrophobic treatment agent may be selected from polysiloxanes such as polymethicone, polydimethylsiloxane, perfluoroalkylsilane, alkylalkoxysilane, fatty acid (such as stearic acid), metal soap (such as aluminum dimyristate), aluminum salts of hydrogenated tallowyl glutamic acid, perfluoroalkyl phosphates, perfluoroalkylsilanes, perfluoroalkylsilazanes, polyoxides of hexafluoropropylene, perfluoroalkyl-containing Polyorganosiloxanes with fluoroalkyl perfluoropolyether groups, amino acids, N-acyl amino acids or salts thereof, lecithin, isopropyl tristearic titanate and mixtures thereof;

According to a preferred embodiment, the hydrophobic treatment agent is selected from alkylalkoxysilanes, especially trimethylsiloxysilicate.

Additional regular cosmetic ingredients:

The composition according to the invention may also comprise any conventional cosmetic ingredient, which may in particular be selected from antioxidants, fragrances, preservatives, neutralizing agents, surfactants, solar filters, vitamins, moisturizing agents, self-tanning compounds, anti-wrinkle active ingredients, emollients, hydrophilic or lipophilic active ingredients, anti-free radical agents, deodorants, sequestrants, and mixtures thereof.

Preferably, it also includes at least one of volatile silicone oil, volatile alkane, water-in-silicone oil emulsifier, polyol, surfactant, preservative, essence, moisturizer and active substance. Physiologically acceptable medium The composition according to the invention comprises a physiologically acceptable and preferably cosmetically acceptable medium, that is to say the composition does not have any harmful side effects, in particular does not cause discomfort to the cosmetic user. Accept redness, temperature, pain or tingling. In particular, the physiologically acceptable medium may comprise at least one oil.

"Oil" in the sense of the present invention means a compound which is liquid at room temperature (25°C) and which is completely insoluble in water or relatively Soluble in water at a ratio of less than 10% by weight based on the weight of the oil introduced into the water.

Oils can be volatile or nonvolatile, polar or nonpolar. Those skilled in the art will take care to select the oil which forms the physiologically acceptable medium of the composition of the invention such that the oil is compatible with the acrylate polysiloxane polymer and the polysiloxane resin it contains.

In particular, examples of oils that can be used in the composition according to the invention include hydrocarbon oils, silicone oils and fluorosilicone oils, and among these oils, the composition according to the invention preferably comprises at least one hydrocarbon oil. "Hydrocarbon oil" means an oil containing only hydrogen and carbon atoms, which may be volatile, and in particular, has a flash point of 40°C to 120°C, preferably 40°C to 55°C, preferably 40°C -50°C. In particular, the volatile hydrocarbon oil may be selected from volatile hydrocarbon oils having 8-16 carbon atoms and mixtures thereof, in particular: - C8-C16 branched chain alkanes, such as C8-C16 iso-alkanes (also known as isoparaffins), isododecane, isodecane, isohexadecane, and oil-linear alkanes sold, for example, under the trade names Isopars or Permetyls, for example by Sasol under the catalogs PARAFOL 12-97 and n-dodecane (C12) and tetradecane (C14) and their mixtures, mixtures of undecane-tridecane (Cétiol UT) sold by PARAFOL 14-97, Example 1 of application WO2008/155059 from Cognis and The mixture of n-undecane (C11) and n-tridecane (C13) obtained in 2 and their mixtures. Preferably, the volatile hydrocarbon oil is isododecane. The hydrocarbon oil may be a non-volatile hydrocarbon, preferably polar, in particular the non-volatile oil may be an ester oil, in particular having 18 to 70 carbon atoms, examples include monoesters, diesters and triesters Esters, in particular ester oils, may be hydroxylated. Preferably, the non-volatile ester oil may be selected from: monoesters containing in total 18-40 carbon atoms, in particular monoesters having the formula R1COOR2, where R1 represents a linear or branched chain fatty acid containing 4-40 carbon atoms and R2 represents a hydrocarbon chain (especially branched) containing 4-40 carbon atoms, provided that R1+R2 is 18, such as Purcellin oil (octyl cetyl stearyl ( cetostearyloctanoate)), isononyl isononanoate, C12-C15 alcohol benzoate, ethyl 2-hexyl palmitate (ethyl 2-hexylpalmitate), octyl dodecyl pivalate, octyl 2-dec Diol stearate, octyl-2-dodecyl erucate, isostearyl isostearate, octyl-2-dodecyl benzoate, caprylic acid esters of alcohols or polyols, decyl Ricinoleate or ricinoleate, isopropyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, 2-isooctyl palmitate, 2-hexyldecyl laurate, 2 - Octyldecyl Palmitate, 2-Octyldodecyl Myristate, 2-Diethylhexyl Succinate. Preferably, these are esters of the formula R1COOR2, wherein R1 represents the remainder of a straight or branched chain fatty acid comprising 4 to 40 carbon atoms and R2 represents a hydrocarbon chain (in particular branched chain) comprising 4 to 40 carbon atoms ), so that R1+R2 is 18. Preferably, the esters contain 18-40 carbon atoms in total. Examples of preferred monoesters include isononyl isononanoate; diesters, in particular, containing 18-60 carbon atoms in total, especially 18-50 carbon atoms in total. In particular, diesters of carboxylic diacids and monoalcohols, such as preferably diisostearyl malate, may be used. Alternatively, the diester may be a diester of a diol and a carboxylic monoacid, such as neopentyl glycol diheptanoate or polyglyceryl-2 diisostearate (such as sold in particular by the company Alzo under the product catalog DERMOL DGDIS compound);

Triesters, in particular, which contain 35-70 carbon atoms in total, especially triesters such as carboxylic triacids, such as triisostearyl citrate, or tridecyl trimellitate, or di triesters of alcohols and carboxylic monoacids (such as polyglyceryl-2 triisostearate);

Tetraesters, in particular, which have a total of 35 to 70 carbon atoms, such as tetraesters of pentaerythritol or tetraesters of polyglycerol and carboxylic monoacids, for example pentaerythritol tetranonanoate, pentaerythritol tetraisostearate, pentaerythritol tetra Isononanoate, Glyceryl tridecyl-2 tetradecanoate, Polyglyceryl tridecyl-2 tetradecanoate, Polyglyceryl-2 tetraisostearate.

Preferably, the application of a double-wrapping cosmetic composition comprising a solid powder-locking color synergistic synergistic effect in skin-fixing makeup.

Table 1: Comparative example and embodiment form

Examples and comparative examples in the present invention can be prepared in the following manner: at a stirring speed of 500-600rpm, the polyurethane A) of the present invention will be

1 Add oil phase to participate in emulsification under stirring, silicone resin polymer B)(

P620B) Add cyclomethicone (1:4), heat slightly and keep stirring to disperse evenly; add formula oil phase before emulsification. Fully dissolve sodium chloride, 1,2-hexanediol, glycerin, and ethylhexylglycerin in the water phase. After the oil phase is dispersed evenly at room temperature, stir the oil phase and add the water phase to complete emulsification.

Table 2: Examples or comparative examples in the present invention all have the components listed in the table below:

Evaluation experiment:

Apply each formulated product on the skin, wait for it to dry completely, and an evaluation panel composed of trained makeup artists will rate each item, with 1 point being the lowest and worst, and 5 points being the best and strongest. Since scoring is relative, there is no comparability between the scores of each group.

For the "makeup stay" experiment, the skin was first subjected to a standardized washing procedure. Skin softened in water for 15 minutes Wash the skin with a 12 wt % sodium lauryl sulfate solution for 2 minutes, rinse thoroughly with warm water, and blow dry on a cool setting.

The "Foundation Test" experiment was carried out in a special climate chamber with a relative humidity of >60%, in which a sample of the foundation was applied in an area of 2x2 cm. The temperature of the chamber was 25°C. Test conditions, smear feeling, after smearing, 2 minutes after smearing, and 10 minutes after smearing.

Table 3: Texture & Smear Evaluation Results of Comparative Example Components

Table 4: Evaluation results after smearing of the components of the comparative example

Table 5: 2-10min evaluation results of the components of the comparative example after smearing

The above experiments once again proved that compared to other polyurethane formulations, only the formulation of polyurethane-7 is better, stronger than other polyurethane products, and the formulation of polyurethane-7A) and silicone polymer powder B) has a significant improvement makeup effect.

The above is only a preferred embodiment of the patent of the present invention, and is not intended to limit the patent of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the patent of the present invention shall be included in this patent. within the protection scope of the invention patent.

Claims (10)

1. A double-wrapped cosmetic composition with solid powder and color-locking synergistic synergistic effect, which is used for facial cosmetic compositions, and is characterized in that:

   a) at least one polyurethane-7A) obtainable by reacting an isocyanate A1HMDI with a hydroxyl-functionalized polyorganosiloxane A2 and with a polyester polyol polymer A3;

   b) Polymethylsilicone B).
2. A solid powder color-locking synergistic synergistic double-wrapping cosmetic composition according to claim 1, characterized in that it includes monoisocyanate R-N=C=O and diisocyanate O=C=N-R-N As for =C=O and polyisocyanate, HMDI hexamethylene diisocyanate is preferably used.
3. A kind of solid powder color-locking synergistic synergistic double-wrapped cosmetic composition according to claim 1, characterized in that: hydroxyl-functionalized polyorganosiloxane, the structural formula is HO[(CH3)2SiO]nH, which is A linear polymer with repeating silicon-oxygen bonds as the main chain, methyl groups as side groups and hydroxyl groups terminated.
4. A kind of solid powder color-locking synergistic synergistic double-wrapped cosmetic composition according to claim 1, characterized in that: the prepolymer A1) used in the preparation of polyurethane is preferably selected from polyether polyols , polycarbonate polyol, polyether polycarbonate polyol and/or polyester polyol and one or more polyols react with polyisocyanate to obtain.
5. A solid powder color-locking synergistic synergistic double-wrapped cosmetic composition according to claim 1, characterized in that: the polymethyl silicone resin B) is a methyl MQ type silicone resin, wherein the methyl MQ type silicone resin It is a new type of organic silicon material with a three-dimensional nonlinear structure composed of molecules with Si-O bonds as the skeleton.
6. A solid powder color-locking synergistic synergistic double-wrapped cosmetic composition according to claim 5, characterized in that: the structural formula of methyl MQ type silicone resin is [(CH3)3Si01/2]a[Si04/2] b, where [(CH3)3SiO1/2] is the monofunctional siloxane chain M, [SiO4/2] is the tetrafunctional siloxane polycondensation chain Q, and the molar ratio of M to Q chain is 0.6 -0.9, its molar mass is generally 1000-8000, the ratio of the amount of M chain units to Q chain units in the molecular structure and the structure determine the properties and application range of silicone resin.
7. According to any one of claims 1-6, a solid powder-locking color synergistic synergistic double-wrapping cosmetic composition is characterized in that: the solid component in the polyurethane-7A) accounts for the weight percentage of the cosmetic composition is 0.1% to 5%; the solid component in the polymethyl silicone resin B) accounts for 1% to 10% by weight of the cosmetic composition.
8. The double-enveloped cosmetic composition with solid powder, color-locking and synergistic effect according to claim 1, wherein the pigments include titanium dioxide, red iron oxide, yellow iron oxide and black iron oxide.
9. According to any one of claims 1-6, a solid powder color-locking synergistic synergistic double-wrapping cosmetic composition is characterized in that: it also includes volatile silicone oil, volatile alkane, water-in-silicone oil emulsifier, multi-component At least one of alcohol, surfactant, preservative, essence, moisturizer and active substance.
10. According to claim 1, the application of a solid powder and color-locking synergistic synergistic double-wrapping cosmetic composition in skin makeup fixing.

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