Reactive organopolysiloxane, method for producing the same, modified powder, and base makeup containing the modified powder

Abstract

The application discloses a reactive organic polysiloxane, a preparation method thereof, modified powder and base makeup containing the modified powder. The reactive organic polysiloxane has a structure shown in formula I. The preparation method of the reactive organic polysiloxane comprises the following steps: mixing unsaturated silane, unsaturated fatty acid ester, optionally monovinyl polysiloxane and hydrogenated polydialkylsiloxane, and performing reaction in the presence of a catalyst to obtain the reactive organic polysiloxane. The modified powder comprises powder and a treating agent attached to the powder, wherein the treating agent comprises the above-mentioned reactive organic polysiloxane and / or a partial (hydrolysis) condensate thereof. The base makeup comprises the above-mentioned modified powder and a water-in-silicon oil emulsion. The reactive organic polysiloxane provided by the application can be used as a powder treating agent. The modified powder provided by the application has excellent dispersibility, lipophilicity and silicon oil affinity. The base makeup containing the modified powder has good color uniformity and small color difference before and after being applied.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of daily chemicals, and particularly relates to a reactive organic polysiloxane, a preparation method thereof, modified powder and base makeup containing the modified powder. BACKGROUND

[0002] The powder used in the base makeup is mainly metal oxide powder for improving skin color and porous microsphere powder for providing oil control effect. In order to improve the dispersion effect of the powder in the base makeup, a surface treatment agent is usually used for modification. Covering the treatment agent on the surface of the powder to be treated can endow the powder with hydrophobicity, easy dispersion and different skin feeling. The treatment agent used for modifying the powder mainly includes fatty acids, fatty alcohols, silane coupling agents and some small molecule surfactants, and the powder used in the water-in-silicone type base makeup is usually modified by using a hydrophobic silane coupling agent, such as octyl triethoxysilane and decyl triethoxysilane. Although these small molecule treatment agents have excellent performance in improving the lipophilicity of the powder, they are slightly poor in dispersion effect and skin feeling performance, and are poor in silicone oil affinity. The base makeup product obtained by using these small molecule treatment agents as the powder modifier, especially the water-in-silicone type base makeup product, generally has the problems of poor color uniformity, large color change before and after application, and relatively poor long-term storage stability, especially the problems of color band and color change before and after application, which are always the pain points of the base makeup product.

[0003] At present, there are many reports about powder treatment agents.

[0004] For example, CN114224747A discloses a modified powder, a preparation method thereof and a cosmetic comprising the modified powder. The preparation method of the modified powder comprises the following steps: mixing the base powder with a solution containing a film-forming agent to obtain a mixture, and drying the mixture to obtain the modified powder. When the modified powder is used in the cosmetic, the compatibility of the modified powder with other components is excellent, and the modified powder can be uniformly dispersed in the cosmetic.

[0005] CN115105430A discloses a powder surface composite treatment agent, a surface modified powder and application thereof. The powder surface composite treatment agent comprises a coupling agent, a silicone elastomer and a film-forming agent. The surface modified powder obtained by modifying the base powder with the powder surface composite treatment agent has better and more stable performance, and when the surface modified powder is applied to the cosmetic, the cosmetic has good oil compatibility and stability, good skin adhesion and good skin feeling.

[0006] Although the powder treatment agents disclosed in the above patents have better dispersion and skin feeling than the small molecule treatment agents, they still cannot solve the problems of poor color uniformity, large color change before and after application and relatively poor long-term storage stability of the base makeup product. SUMMARY

[0007] In order to overcome the deficiencies of the prior art, the present application aims to provide a reactive organopolysiloxane, a preparation method thereof, a modified powder, and a base makeup containing the modified powder. The reactive organopolysiloxane has active groups, can be connected to the surface of a powder through a chemical bond, and introduces a fatty acid ester segment and a long siloxane segment in the side chain. The reactive organopolysiloxane can be used as a powder treatment agent, especially a powder treatment agent for cosmetics. The modified powder modified by the reactive organopolysiloxane has excellent dispersibility, lipophilicity, and silicone oil affinity. The base makeup containing the modified powder has good color uniformity, a small color difference before and after application, and a smooth and excellent skin feel.

[0008] To achieve this purpose, the present application adopts the following technical solutions:

[0009] In a first aspect, the present application provides a reactive organopolysiloxane having a structure represented by Formula I:

[0010]

[0011] wherein a is an integer from 1 to 100, b is an integer from 0 to 100, c is an integer from 1 to 100, d is an integer from 0 to 100; e is an integer from 1 to 100; n is an integer from 0 to 2; each X represents a divalent organic group; each R 1 , R 2 , R 3 , R 4 , R 5 , R 6 is independently selected from any one of 1-30 carbon atom substituted or unsubstituted, and straight-chain or branched alkyl, 6-30 carbon atom substituted or unsubstituted aryl or aralkyl, 1-30 carbon atom substituted or unsubstituted alkyl; Q represents a hydroxyl group or a hydrolyzable group independently of each other.

[0012] Preferably, each R 1 , R 3 is independently selected from 1-30 carbon atom substituted or unsubstituted, and straight-chain or branched alkyl, or aryl or aralkyl having 6-30 carbon atoms.

[0013] Preferably, each R 2 , R 4 is independently selected from 1-18 carbon atom substituted or unsubstituted, and straight-chain or branched alkyl.

[0014] Preferably, each R 5 is independently selected from 1-20 carbon atom substituted or unsubstituted, and straight-chain or branched alkyl.

[0015] Preferably, each R 6 are independently of each other selected from alkyl of 1 to 4 carbon atoms.

[0016] Preferably, each X is independently selected from a divalent substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms.

[0017] Preferably, Q represents independently of each other a hydroxyl group or an alkoxy group.

[0018] Preferably, n is 0.

[0019] Preferably, the raw materials for preparing the reactive organopolysiloxane include a hydrogenated polydialkylsiloxane, an unsaturated silane, an unsaturated fatty acid ester, optionally a monovinyl polysiloxane, and a catalyst.

[0020] Preferably, the weight average molecular weight of the reactive organopolysiloxane is 1000 to 35000, and further preferably, the weight average molecular weight of the reactive organopolysiloxane is 3000 to 20000.

[0021] Preferably, the unsaturated fatty acid ester is a monounsaturated fatty acid ester.

[0022] Preferably, the unsaturated fatty acid ester is one or more of methyl oleate, ethyl oleate, propyl oleate, butyl oleate, 2-octyldodecyl oleate, methyl 10-undecylenate, ethyl 10-undecylenate, methyl palmitoleate, ethyl palmitoleate, methyl eicosenoate, ethyl eicosenoate, methyl erucate, and ethyl erucate.

[0023] Preferably, the unsaturated silane is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, vinyl-tris(2-methoxyethoxy)silane, methacryloyloxypropyltrimethoxysilane, allyltrimethoxysilane, allyltriethoxysilane, 7-octenyltrimethoxysilane, and 3-(isobutenoyloxy)propyltrimethoxysilane.

[0024] Preferably, the number average molecular weight of the monovinyl polysiloxane is 500 to 2000.

[0025] In a second aspect, the present application provides a method for preparing the above-mentioned reactive organopolysiloxane, the method comprising the following steps:

[0026] mixing the unsaturated silane, the unsaturated fatty acid ester, the monovinyl polysiloxane, and the hydrogenated polydialkylsiloxane, and reacting in the presence of a catalyst to obtain the reactive organopolysiloxane.

[0027] Preferably, the molar ratio between the unsaturated silane and the unsaturated fatty acid ester is (1-8.5):(1.5-9.5); for example, 1-8.5 can be 1, 2, 3, 4, 5, 6, 7, 8.5; 1.5-9.5 can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9.5, etc.

[0028] Preferably, the molar ratio between the unsaturated silane and the unsaturated fatty acid ester is (1-8.5):(1.5-9.5); for example, 1-8.5 can be 1, 2, 3, 4, 5, 6, 7, 8.5; 1.5-9.5 can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9.5, etc.

[0029] Preferably, the molar ratio between the unsaturated silane and the unsaturated fatty acid ester is (1-8.5):(1.5-9.5); for example, 1-8.5 can be 1, 2, 3, 4, 5, 6, 7, 8.5; 1.5-9.5 can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9.5, etc.

[0030] Preferably, the molar ratio between the unsaturated silane and the unsaturated fatty acid ester is (1-8.5):(1.5-9.5); for example, 1-8.5 can be 1, 2, 3, 4, 5, 6, 7, 8.5; 1.5-9.5 can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9.5, etc.

[0031] Preferably, the catalyst is a platinum-based catalyst.

[0032] Preferably, the temperature of the reaction is 60-120°C.

[0033] In a third aspect, the present application provides the use of the above-mentioned reactive organopolysiloxane in the field of powder treatment.

[0034] In a fourth aspect, the present application provides a modified powder, comprising a powder and a treating agent attached to the powder, wherein the treating agent comprises the above-mentioned reactive organopolysiloxane and / or a partial (hydrolytic) condensate thereof.

[0035] Preferably, the powder comprises inorganic powder and / or organic powder.

[0036] In the present application, the inorganic powder is exemplarily selected from one or more of synthetic mica, mica, sericite, iron oxide (such as iron oxide), titanium oxide, zinc oxide, zirconium oxide, magnesium oxide, aluminum oxide, chromium oxide, iron ferrocyanide, chromium green, manganese violet, kaolin, talc, calcium sulfate, magnesium sulfate, barium sulfate, boron nitride, silicon dioxide, pearl pigment, metal pigment, glass, ultramarine blue; and the organic powder is selected from one or more of organic lake, high molecular polymer, wax powder, surfactant, metal soap (such as zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate).

[0037] Preferably, the weight ratio between the reactive organopolysiloxane and the powder is (1-50):100.

[0038] Further preferably, the weight ratio between the reactive organic polysiloxane and the powder is (1-10):100; for example 1:100; 2:100; 3:100; 4:100; 5:100; 6:100; 7:100; 8:100; 9:100; 10:100, etc.

[0039] In a fifth aspect, the present application provides a method for preparing the modified powder as described above, which comprises the following steps:

[0040] The reactive organic polysiloxane and optionally the first solvent are added to the powder, and after being mixed uniformly, drying is performed to obtain the modified powder;

[0041] Preferably, the mixing mode is one or several of mechanical stirring, homogenization, grinding, and centrifugal mixing.

[0042] Preferably, the first solvent is selected from at least one of water, alkanols, esters, ethers, olefins, and siloxane solvents; more preferably, the solvent is selected from one or more of water, ethanol, isopropyl alcohol, isododecane, cyclotetrasiloxane, and polydimethylsiloxane with a viscosity of 0.5-2 CPS.

[0043] Preferably, the drying temperature is 40-200°C, and the drying time is 0.5-8h.

[0044] Further preferably, the drying temperature is 60-100°C, and the drying time is 1-4h.

[0045] In a sixth aspect, the present application provides a foundation makeup, which comprises the modified powder as described above and a water-in-silicon emulsion.

[0046] Preferably, the mass ratio between the modified powder and the water-in-silicon emulsion is (9-15):(80-83).

[0047] Here, 9-15 can be 9, 10, 11, 12, 13, 14, 15, etc.; and 80-83 can be 80, 81, 82, 83, etc.

[0048] Preferably, the raw materials for preparing the water-in-silicon emulsion comprise an A component and a B component, the A component comprises the following components in parts by weight: moisturizing oil 17-25 parts, silicone elastomer 2-6 parts, water-in-oil emulsifier 2-6 parts, and mineral thickening agent 0.7-1.1 parts; and the B component comprises the following components in parts by weight: moisturizing component 7.5-15.5 parts, water 37-41 parts, and electrolyte 0.7-1.1 parts.

[0049] Preferably, the moisturizing oil comprises phenyltrimethicone and / or dimethicone.

[0050] Preferably, the organosilicon elastomer comprises a dimethicone crosspolymer.

[0051] Preferably, the water-in-oil emulsifier comprises PEG / PPG-20 / 15 dimethicone and / or PEG-10 dimethicone.

[0052] Preferably, the mineral thickening agent comprises a mixture of quaternium-18 bentonite and / or disteardimonium hectorite.

[0053] Preferably, the moisturizing component comprises glycerin and / or propylene glycol.

[0054] Preferably, the electrolyte is sodium chloride and / or potassium chloride.

[0055] Preferably, the preservative is one or more of phenoxyethanol, benzoic acid, sodium benzoate, dehydroacetic acid, sodium dehydroacetate, sorbic acid and its salts, caprylyl glycol, caprylhydroxamid.

[0056] In a seventh aspect, the present application provides a preparation method of the foundation as described above, the preparation method comprising the following steps:

[0057] S1. mixing the modified powder, a second solvent and a surfactant, and grinding into a modified powder slurry;

[0058] S2. mixing the modified powder slurry and a water-in-silicone emulsion uniformly, and filling into a container to obtain the foundation.

[0059] Preferably, the second solvent is selected from at least one of water, alkanols, esters, ethers, olefins, and silicone solvents; more preferably, the solvent is selected from one or more of water, ethanol, isopropyl alcohol, isododecane, cyclopentasiloxane, and dimethicone with a viscosity of 0.5-2 CPS.

[0060] The surfactant is not particularly limited in the present application, and one or more of an anionic surfactant, a cationic surfactant and a nonionic surfactant can be selected.

[0061] Compared with the prior art, the present application has the following advantages:

[0062] The reactive organopolysiloxane provided by the present application has a reactive group, which can be bonded to the surface of the powder through a chemical bond, thereby firmly combining with the surface of the powder, and introducing a fatty acid ester segment and a long siloxane segment in the side chain. The modified powder modified by the reactive organopolysiloxane has excellent dispersibility and very high affinity with various oil agents such as silicone oil, ester oil and hydrocarbon oil. The foundation containing the modified powder has good color uniformity before and after application, small color difference, good spreadability, delicacy and excellent skin feel. DETAILED DESCRIPTION

[0063] The technical solutions of the present application will be further illustrated by the following specific embodiments. Those skilled in the art should understand that the embodiments are only used to help understand the present application, and should not be regarded as specific limitations to the present application. Unless specifically stated, the reagents, methods and devices used in the present application are the conventional reagents, methods and devices in the technical field. In addition, "parts" and "%" in the present specification, unless specifically stated, represent "mass parts" and "mass%", respectively.

[0064] The method for measuring active hydrogen is as follows:

[0065] Accurately weigh 0.1 g (accurate to 0.0001 g) of the product into a 250 mL iodine flask, first dissolve the measured substance in 10 mL of carbon tetrachloride, then add 5 mL of a 10% Br2-CH3COOH solution, shake to mix uniformly, and place in the dark to avoid light for half an hour, then add 10 mL of a 10% potassium iodide solution. Start titration with a calibrated Na2S2O3 standard solution, near the end point, add 2-4 drops of a 10 g / L starch indicator solution, and stop titration immediately when the blue color of the solution system disappears, and perform a blank control experiment at the same time.

[0066] The content of active hydrogen is calculated by the following formula: C H % = [(V0-V1) x C Na2S2O3 x 0.5 / (m x 1000)] x 100%

[0067] In the above formula, C H is the content of active hydrogen in the product, m is the mass of the product, C is the concentration of the Na2S2O3 standard solution (mol / L -1 ), V0 is the volume of Na2S2O3 consumed in the blank experiment (mL), and V1 is the volume of Na2S2O3 consumed in the product experiment (mL).

[0068] Synthesis Example 1

[0069] S1. Add octamethylcyclotetrasiloxane 256.3 g, high hydrogen-containing silicone oil (202, hydrogen content 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g, and concentrated sulfuric acid 4 g into a reaction kettle, heat to 55°C, and keep the temperature for 6 h after reaction, then add a sodium carbonate neutralizer, filter, heat to 140°C to remove small molecular substances, and cool to obtain hydrogenated polydialkylsiloxane, the hydrogen content of which is 0.20%;

[0070] S2. Methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil (Silok 3821F8, molecular weight 1250), 20% isopropyl alcohol and 0.1% hydroquinone based on the total mass of raw materials were mixed in a proportion to obtain a raw material mixture;

[0071] S3. The above hydrogenated polydialkylsiloxane was put into a reaction kettle equipped with a stirrer, a thermometer and a condenser in a proportion, the stirring was started, nitrogen was introduced, the temperature was raised to 90°C, 20 ppm of Karstedt catalyst was added dropwise into the reaction kettle, at the same time, the raw material mixture was added dropwise into the reaction kettle, and the dropping was completed within 1.5 h, after the reaction was kept at 90°C for 5 h, the content of silicon hydrogen was detected to be less than 10 ppm, then the reaction was stopped, and low boiling point substances were removed by vacuum distillation to obtain a reactive organopolysiloxane (denoted as A1).

[0072] In the reaction raw materials, n(Si-H):n(C=C)=1.1.2; the molar ratio of methyl oleate, triethoxyallylsilane and mono-capped alkenyl silicone oil was 3.5:6:0.5.

[0073] The product obtained in the synthesis example was tested by Fourier transform infrared spectrometer, and the test results showed that the infrared characteristic peak of silicon hydrogen bond basically disappeared near the wavelength of 2150 cm -1 , which proved that the methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil and hydrogenated polydialkylsiloxane in the synthesis example had a silicon hydrogen addition reaction to obtain a reactive organopolysiloxane represented by formula (I).

[0074] The weight average molecular weight (M w ) was 9288 by GPC test.

[0075] Synthesis Example 2

[0076] S1. 39.4 g of high hydrogen-containing silicone oil (202, hydrogen content 1.58%), 258.5 g of octamethylcyclotetrasiloxane and 2.05 g of hexamethyldisiloxane were put into a reaction kettle, 4 g of concentrated sulfuric acid was slowly added, the temperature was raised to 60°C and the reaction was kept for 6 h, then the temperature was lowered to 40°C, sodium bicarbonate was slowly added for neutralization, filtration, the temperature was raised to 140°C to remove small molecular substances, and the product was cooled to obtain hydrogenated polydialkylsiloxane (hydrogen content 0.16%);

[0077] S2. Methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil (Silok 3821F21, molecular weight 500), 30% isopropyl alcohol and 0.2% hydroquinone based on the total mass of raw materials were mixed in a proportion to obtain a raw material mixture;

[0078] S3. The hydrogenated polydialkylsiloxane described above is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, stirring is started, nitrogen is introduced, the temperature is raised to 95°C, 10 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 95°C for 5 h, the content of silicon hydrogen is detected to be less than 10 ppm, then the reaction is stopped, low boiling point substances are removed by distillation under reduced pressure, and a reactive organic polysiloxane (denoted as A2) is obtained.

[0079] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.15; the molar ratio among methyl palmitate, vinyltrimethoxysilane and single-terminated alkenyl silicone oil is 5:4:1.

[0080] The product obtained in the present synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of the silicon hydrogen bond basically disappears near the wavelength of 2150 cm -1 , which proves that the silicon hydrogen addition reaction occurs between methyl palmitate, vinyltrimethoxysilane, single-terminated alkenyl silicone oil and hydrogenated polydialkylsiloxane in the present synthesis example, and a reactive organic polysiloxane represented by formula (I) is obtained.

[0081] The weight average molecular weight (M w ) is 18118.5 by GPC test.

[0082] Synthesis Example 3

[0083] S1. 41 g of high hydrogen-containing silicone oil (202, hydrogen content is 1.58%), 240 g of octamethylcyclotetrasiloxane and 3.7 g of hexamethyldisiloxane are put into a reaction kettle, 4 portions of concentrated sulfuric acid are slowly added, the temperature is raised to 60°C and the reaction is kept for 6 h, then the temperature is lowered to 40°C, sodium bicarbonate is slowly added for neutralization, filtration is performed, the temperature is raised to 140°C to remove small molecular substances, and cooling is performed to obtain hydrogenated polydialkylsiloxane (hydrogen content is 0.21%);

[0084] S2. Propyl oleate, vinyltriethoxysilane, single-terminated alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight is 1250), 30% of isopropyl alcohol based on the total mass of raw materials and 0.2% of hydroquinone based on the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0085] S3. The hydrogenated polydialkylsiloxane described above is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, the stirring is started, nitrogen is introduced, the temperature is raised to 85°C, 10 ppm of Karstedt catalyst is added dropwise into the reaction kettle, at the same time, the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 85°C for 6 h, the content of silicon hydrogen is detected to be less than 10 ppm, then the reaction is stopped, and low boiling point substances are removed by distillation under reduced pressure to obtain a reactive organopolysiloxane (denoted as A3).

[0086] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.3; the molar ratio of propyl oleate, vinyltriethoxysilane and single-terminated alkenyl silicone oil is 6.5:3:0.5.

[0087] The product obtained in the synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of the silicon hydrogen bond basically disappears near the wavelength of 2150 cm -1 , which proves that the propyl oleate, vinyltriethoxysilane, single-terminated alkenyl silicone oil and hydrogenated polydialkylsiloxane in the synthesis example have undergone a silicon hydrogen addition reaction to obtain the reactive organopolysiloxane shown in formula (I).

[0088] The weight average molecular weight (M w ) is 3827 by GPC test.

[0089] Synthesis Example 4

[0090] S1. 37.5 g of high hydrogen-containing silicone oil (202, hydrogen content is 1.58%), 250.7 g of octamethylcyclotetrasiloxane and 11.8 g of hexamethyldisiloxane are put into a reaction kettle, 4 g of concentrated sulfuric acid is slowly added, the temperature is raised to 60°C and the reaction is kept for 6 h, then the temperature is lowered to 40°C, sodium bicarbonate is slowly added for neutralization, filtration, the temperature is raised to 140°C to remove small molecular substances, and the product is obtained after cooling and lowering the temperature to obtain hydrogenated polydialkylsiloxane (hydrogen content is 0.20%);

[0091] S2. Ethyl oleate, allyltrimethoxysilane, single-terminated alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight is 1250), 30% of isopropyl alcohol based on the total mass of raw materials and 0.2% of hydroquinone based on the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0092] S3. The hydrogenated polydialkylsiloxane is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, the stirring is started, nitrogen is introduced, the temperature is raised to 95°C, 10 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 100°C for 4 h, the content of silicon hydrogen is detected to be less than 10 ppm, then the reaction is stopped, and low boiling point substances are removed by vacuum distillation to obtain the reactive organic polysiloxane (denoted as A4).

[0093] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.1; the molar ratio among ethyl oleate, allyltrimethoxysilane and mono-terminated alkenyl silicone oil is 2:7.5:0.5;

[0094] The product obtained in the present synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of the silicon hydrogen bond basically disappears near the wavelength of 2150 cm -1 , which proves that the silicon hydrogen addition reaction occurs among ethyl oleate, allyltrimethoxysilane, mono-terminated alkenyl silicone oil and hydrogenated polydialkylsiloxane in the present synthesis example, and the reactive organic polysiloxane shown in formula (I) is obtained.

[0095] The weight average molecular weight (M w ) is 5343 by GPC test.

[0096] Synthesis Example 5

[0097] S1. Octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content is 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g and concentrated sulfuric acid 4 g are added into a reaction kettle, the temperature is raised to 55°C, and after reaction for 6 h, a sodium carbonate neutralizer is added, filtration is performed, the temperature is raised to 140°C to remove small molecular substances, and after cooling, hydrogenated polydialkylsiloxane is prepared, and the hydrogen content of the hydrogenated polydialkylsiloxane is 0.20%;

[0098] S2. Methyl oleate, triethoxyallylsilane, mono-terminated alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight is 1250), isopropanol accounting for 20% of the total mass of raw materials and hydroquinone accounting for 0.1% of the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0099] S3. The hydrogenated polydialkylsiloxane is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, the stirring is started, nitrogen is introduced, the temperature is raised to 90°C, 20 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 90°C for 5 h, the content of silicon hydrogen is detected to be less than 10 ppm, then the reaction is stopped, and low boiling point substances are removed by vacuum distillation to obtain the reactive organic polysiloxane (denoted as A5).

[0100] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.2; the molar ratio among methyl oleate, triethoxyallylsilane and mono-capped alkenyl silicone oil is 1:9.5:0.5.

[0101] The product obtained in the present synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of the silicon hydrogen bond basically disappears near the wavelength of 2150 cm -1 , which proves that the silicon hydrogen addition reaction occurs among methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil and hydrogenated polydialkylsiloxane in the present synthesis example, and the reactive organic polysiloxane shown in formula (I) is obtained.

[0102] The weight average molecular weight (M w ) is 9134 by GPC test.

[0103] Synthesis Example 6

[0104] S1. Octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content is 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g and concentrated sulfuric acid 4 g are added into a reaction kettle, the temperature is raised to 55°C, and after reaction for 6 h, a sodium carbonate neutralizer is added, filtration is performed, the temperature is raised to 140°C to remove small molecular substances, and after cooling, hydrogenated polydialkylsiloxane is prepared, and the hydrogen content of the hydrogenated polydialkylsiloxane is 0.20%;

[0105] S2. Methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight is 1250), isopropyl alcohol accounting for 20% of the total mass of raw materials and hydroquinone accounting for 0.1% of the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0106] S3. The hydrogenated polydialkylsiloxane is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, the stirring is started, nitrogen is introduced, the temperature is raised to 90°C, 20 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 90°C for 5 h, the content of Si-H is detected to be less than 10 ppm, then the reaction is stopped, and low-boiling substances are removed by distillation under reduced pressure to obtain the reactive organopolysiloxane (denoted as A6).

[0107] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.2; and the molar ratio among methyl oleate, triethoxyallylsilane and mono-capped alkenyl silicone oil is 8.5:1.5:0.5.

[0108] The product obtained in the present synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of the Si-H bond basically disappears near the wavelength of 2150 cm -1 , proving that the methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil and hydrogenated polydialkylsiloxane in the present synthesis example have undergone a Si-H addition reaction to obtain the reactive organopolysiloxane shown in formula (I).

[0109] The weight average molecular weight (M w ) is 9841 by GPC test.

[0110] Synthesis Example 7

[0111] S1. Octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g and concentrated sulfuric acid 4 g are added into a reaction kettle, the temperature is raised to 55°C, and after reaction for 6 h, a sodium carbonate neutralizer is added, filtration is performed, the temperature is raised to 140°C to remove small molecular substances, and after cooling, hydrogenated polydialkylsiloxane is prepared, and the hydrogen content of the hydrogenated polydialkylsiloxane is 0.20%;

[0112] S2. Methyl oleate, triethoxyallylsilane, mono-capped alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight 1250), isopropyl alcohol accounting for 20% of the total mass of raw materials and hydroquinone accounting for 0.1% of the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0113] S3. The hydrogenated polydialkylsiloxane is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, stirring is started, nitrogen is introduced, the temperature is raised to 90°C, 20 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 90°C for 5 h, the content of silicon hydrogen is detected to be less than 10 ppm, the reaction is stopped, low boiling point substances are removed by vacuum distillation, and a reactive organic polysiloxane (marked as A7) is obtained.

[0114] wherein n(Si-H):n(C=C) in the reaction raw materials is 1.1.2; the molar ratio among methyl oleate, triethoxyallyl silane and mono-terminated alkenyl silicone oil is 3:5:2.

[0115] The product obtained in the present synthesis example is tested by a Fourier transform infrared spectrometer, and the test result shows that the infrared characteristic peak of silicon hydrogen bond basically disappears at a wavelength of 2150 cm -1 nearby, proving that the methyl oleate, triethoxyallyl silane, mono-terminated alkenyl silicone oil and hydrogenated polydialkylsiloxane in the present synthesis example have undergone a silicon hydrogen addition reaction, and a reactive organic polysiloxane shown in formula (I) is obtained.

[0116] The weight average molecular weight (M w ) is 6708 by GPC test.

[0117] Synthesis Example 8

[0118] S1. Octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content is 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g and concentrated sulfuric acid 4 g are added into a reaction kettle, the temperature is raised to 55°C, after reaction for 6 h, a sodium carbonate neutralizer is added, filtration is performed, the temperature is raised to 140°C to remove small molecule substances, and after cooling, hydrogenated polydialkylsiloxane is prepared, the hydrogen content of the hydrogenated polydialkylsiloxane is 0.20%;

[0119] S2. Methyl oleate, triethoxyallyl silane, 20% of isopropyl alcohol based on the total mass of raw materials and 0.1% of hydroquinone based on the total mass of raw materials are uniformly mixed according to a metering ratio to obtain a raw material mixture;

[0120] S3. The hydrogenated polydialkylsiloxane is put into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to a metering ratio, stirring is started, nitrogen is introduced, the temperature is raised to 90°C, 20 ppm of Karstedt catalyst is added dropwise into the reaction kettle, while the raw material mixture is added dropwise into the reaction kettle, and the dropping is completed within 1.5 h, after the reaction is kept at 90°C for 5 h, the content of silicon hydrogen is detected to be less than 10 ppm, the reaction is stopped, low boiling point substances are removed by vacuum distillation, and a reactive organic polysiloxane (marked as A7) is obtained.

[0121] The molar ratio between methyl oleate and triethoxyl allyl silane is 4:6.

[0122] The product obtained in this synthesis example was tested by Fourier transform infrared spectrometer, and the test results are shown in the infrared characteristic peak of silicon hydrogen bond basically disappearing at a wavelength of 2150 cm -1 nearby, proving that the methyl oleate, triethoxyl allyl silane, single-terminated alkenyl silicone oil and hydrogenated polydialkyl siloxane in this synthesis example have undergone a silicon hydrogen addition reaction to obtain a reactive organopolysiloxane represented by formula (I).

[0123] The weight average molecular weight (M w ) is 8594 by GPC test.

[0124] Synthesis of Comparative Example 1

[0125] S1. Add octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content 1.58%) 37.5 g, hexamethyl disiloxane 6.1 g and concentrated sulfuric acid 4 g into a reaction kettle, heat to 55°C, and after 6 h of reaction, add sodium carbonate neutralizer, filter, heat to 140°C to remove small molecule substances, and after cooling, obtain hydrogenated polydialkyl siloxane, the hydrogen content of which is 0.20%;

[0126] S2. Mix methyl oleate, single-terminated alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight 1250), 20% isopropyl alcohol based on the total mass of raw materials and 0.1% hydroquinone based on the total mass of raw materials according to the metering ratio to obtain a raw material mixture;

[0127] S3. Put the hydrogenated polydialkyl siloxane into a reaction kettle equipped with a stirrer, a thermometer and a condenser according to the metering ratio, start stirring, introduce nitrogen, heat to 90°C, add 20 ppm of Karstedt catalyst dropwise into the reaction kettle, at the same time, add the raw material mixture dropwise into the reaction kettle, and complete the dropwise addition within 1.5 h, after 5 h of reaction at 90°C, detect the content of silicon hydrogen <10 ppm, stop the reaction, remove low boiling substances by reduced pressure distillation, and obtain a reactive organopolysiloxane (marked as A9).

[0128] The molar ratio between methyl oleate and triethoxyl allyl silane is 4:6.

[0129] The product obtained in this synthesis example was tested by Fourier transform infrared spectrometer, and the test results are shown in the infrared characteristic peak of silicon hydrogen bond basically disappearing at a wavelength of 2150 cm -1Nearby, the infrared characteristic peak of silicon hydrogen bond basically disappears, which proves that the silicon hydrogen addition reaction occurs between methyl oleate, mono-capped alkenyl silicone oil and hydrogenated polydialkylsiloxane in this synthesis example, and the reactive organopolysiloxane shown in formula (I) is obtained.

[0130] The weight average molecular weight (M w ) is 10687.

[0131] Synthesis Comparative Example 2

[0132] S1. Add octamethylcyclotetrasiloxane 256.3 g, high hydrogen content silicone oil (202, hydrogen content is 1.58%) 37.5 g, hexamethyldisiloxane 6.1 g and concentrated sulfuric acid 4 g into a reaction kettle, heat to 55°C, and after holding for 6 h, add sodium carbonate neutralizer, filter, heat to 140°C to remove small molecule substances, and after cooling, hydrogenated polydialkylsiloxane is prepared. The hydrogen content of the hydrogenated polydialkylsiloxane is 0.20%;

[0133] S2. Mix triethoxyallylsilane and mono-capped alkenyl silicone oil (Guangzhou Silok, Silok 3821F8, molecular weight is 1250), 20% of isopropyl alcohol based on the total mass of raw materials and 0.1% of hydroquinone based on the total mass of raw materials in a metering ratio to obtain a raw material mixture;

[0134] S3. Put the hydrogenated polydialkylsiloxane into a reaction kettle provided with a stirrer, a thermometer and a condenser in a metering ratio, start stirring, introduce nitrogen, heat to 90°C, drop 20 ppm of Karstedt catalyst into the reaction kettle, at the same time, drop the raw material mixture into the reaction kettle, and drop the raw material mixture into the reaction kettle within 1.5 h, after holding for 5 h at 90°C, detect the content of silicon hydrogen <10 ppm, stop the reaction, and remove low boiling substances by reduced pressure distillation to obtain the reactive organopolysiloxane (marked as A10).

[0135] In the reaction raw materials, n(Si-H):n(C=C)=1.1.2; the molar ratio between triethoxyallylsilane and mono-capped alkenyl silicone oil is 6:0.5.

[0136] The product obtained in this synthesis example is tested by Fourier transform infrared spectrometer, and the test results show that the infrared characteristic peak of silicon hydrogen bond basically disappears near the wavelength of 2150 cm -1 , which proves that the silicon hydrogen addition reaction occurs between triethoxyallylsilane, mono-capped alkenyl silicone oil and hydrogenated polydialkylsiloxane in this synthesis example, and the reactive organopolysiloxane shown in formula (I) is obtained.

[0137] The weight average molecular weight (M w ) is 9155.

[0138] 2. A method for preparing a modified powder.

[0139] Examples 1-10 and Comparative Examples 1-3 below are methods for preparing a modified powder.

[0140] The model and manufacturer information of the raw materials are as follows:

[0141] Iron red powder: Shanghai Shengkun Chemical Co., Ltd.;

[0142] Iron yellow powder: Shanghai Shengkun Chemical Co., Ltd.;

[0143] Iron black powder: Shanghai Shengkun Chemical Co., Ltd.;

[0144] Silicone oil: Hunan Suiyouke Organic Silicon Co., Ltd. 201-1.5, which has a viscosity of 1.5 cps;

[0145] Porous silica powder: Jin Sanjiang (Zhaoqing) Silicon Material Co., Ltd., 319.

[0146] Example 1

[0147] 100 g of iron red powder, 3 g of reactive organopolysiloxane (A1), and 5 g of silicone oil (viscosity of 1.5 cps) were mixed, and after baking and reacting at 100°C for 2 h, a modified iron red powder was obtained.

[0148] The above iron red powder was replaced with iron yellow powder, and a modified iron yellow powder was prepared in the same way.

[0149] The above iron red powder was replaced with iron black powder, and a modified iron black powder was prepared in the same way.

[0150] The above iron red powder was replaced with titanium white powder, and a modified titanium white powder was prepared in the same way.

[0151] The above iron red powder was replaced with porous silica powder, and a modified porous silica powder was prepared in the same way.

[0152] Example 2

[0153] The difference between this example and Example 1 is that the reactive organopolysiloxane (A1) was replaced with reactive organopolysiloxane (A2). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder were prepared in the same way as in Example 1.

[0154] Example 3

[0155] The difference between this example and Example 1 is that the reactive organopolysiloxane (Al) is replaced by the reactive organopolysiloxane (A3). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder are each prepared in the same manner as in Example 1.

[0156] Example 4

[0157] The difference between this example and Example 1 is that the reactive organopolysiloxane (Al) is replaced by the reactive organopolysiloxane (A4). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder are each prepared in the same manner as in Example 1.

[0158] Example 5

[0159] The difference between this example and Example 1 is that the reactive organopolysiloxane (Al) is replaced by the reactive organopolysiloxane (A5). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder are each prepared in the same manner as in Example 1.

[0160] Example 6

[0161] The difference between this example and Example 1 is that the reactive organopolysiloxane (Al) is replaced by the reactive organopolysiloxane (A6). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder are each prepared in the same manner as in Example 1.

[0162] Example 7

[0163] The difference between this example and Example 1 is that the reactive organopolysiloxane (Al) is replaced by the reactive organopolysiloxane (A7). Modified iron red powder, modified iron yellow powder, modified iron black powder, modified titanium white powder, and modified porous silica powder are each prepared in the same manner as in Example 1.

[0164] Example 8

[0165] 100 g of iron red powder, 5 g of the reactive organopolysiloxane (Al), and 5 g of silicone oil (viscosity of 1.5 cps) are mixed, and after baking at 60°C for 4 h, modified iron red powder is obtained;

[0166] The above iron red powder is replaced by iron yellow powder, and modified iron yellow powder is prepared in the same manner;

[0167] The above iron red powder is replaced by iron black powder, and modified iron black powder is prepared in the same manner;

[0168] The above iron red powder is replaced by titanium white powder, and modified titanium white powder is prepared in the same manner;

[0169] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared in the same way.

[0170] Example 9

[0171] 100 g of iron red powder, 1 g of reactive organic polysiloxane (A1), and 5 g of silicone oil (viscosity 1.5 cps) are mixed, and after baking at 100°C for 2 h, a modified iron red powder is obtained.

[0172] The above iron red powder is replaced by iron yellow powder, and the modified iron yellow powder is prepared in the same way.

[0173] The above iron red powder is replaced by iron black powder, and the modified iron black powder is prepared in the same way.

[0174] The above iron red powder is replaced by titanium white powder, and the modified titanium white powder is prepared in the same way.

[0175] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared in the same way.

[0176] Example 10

[0177] 100 g of iron red powder, 3 g of reactive organic polysiloxane (A1), and 5 g of silicone oil (viscosity 1.5 cps) are mixed, and after baking at 40°C for 8 h, a modified iron red powder is obtained.

[0178] The above iron red powder is replaced by iron yellow powder, and the modified iron yellow powder is prepared in the same way.

[0179] The above iron red powder is replaced by iron black powder, and the modified iron black powder is prepared in the same way.

[0180] The above iron red powder is replaced by titanium white powder, and the modified titanium white powder is prepared in the same way.

[0181] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared in the same way.

[0182] Example 11

[0183] 100 g of iron red powder, 3 g of reactive organic polysiloxane (A8), and 5 g of silicone oil (viscosity 1.5 cps) are mixed, and after baking at 100°C for 2 h, a modified iron red powder is obtained.

[0184] The above iron red powder is replaced by iron yellow powder, and the modified iron yellow powder is prepared in the same way.

[0185] The above iron red powder is replaced by iron black powder, and the modified iron black powder is prepared in the same way.

[0186] The above iron red powder is replaced by titanium white powder, and the modified titanium white powder is prepared by the same method.

[0187] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared by the same method.

[0188] Comparative Example 1

[0189] 100 g of iron red powder, 3 g of reactive organic polysiloxane (A9), and 5 g of silicone oil (viscosity 1.5 cps) are mixed, and after baking at 100°C for 2 h, a modified iron red powder is obtained.

[0190] The above iron red powder is replaced by iron yellow powder, and the modified iron yellow powder is prepared by the same method.

[0191] The above iron red powder is replaced by iron black powder, and the modified iron black powder is prepared by the same method.

[0192] The above iron red powder is replaced by titanium white powder, and the modified titanium white powder is prepared by the same method.

[0193] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared by the same method.

[0194] Comparative Example 2

[0195] 100 g of iron red powder, 3 g of reactive organic polysiloxane (A10), and 5 g of silicone oil (viscosity 1.5 cps) are mixed, and after baking at 100°C for 2 h, a modified iron red powder is obtained.

[0196] The above iron red powder is replaced by iron yellow powder, and the modified iron yellow powder is prepared by the same method.

[0197] The above iron red powder is replaced by iron black powder, and the modified iron black powder is prepared by the same method.

[0198] The above iron red powder is replaced by titanium white powder, and the modified titanium white powder is prepared by the same method.

[0199] The above iron red powder is replaced by porous silica powder, and the modified porous silica powder is prepared by the same method.

[0200] Comparative Example 3

[0201] The difference between this comparative example and Example 1 is that the iron red powder, iron yellow powder, iron black powder, titanium white powder, and porous silica powder are not modified.

[0202] Comparative Example 4

[0203] The present embodiment comparative example differs from Example 1 in that the reactive organopolysiloxane (A1) is replaced with octyl triethoxysilane, and the modified iron red powder, the modified iron yellow powder, the modified iron black powder, the modified titanium white powder, and the modified porous silica powder are prepared in the same manner, respectively.

[0204] 3. A method for preparing a foundation.

[0205] The following Application Examples 1-11 and Comparative Examples 1-4 are methods for preparing a foundation.

[0206] The components and their weights are shown in Table 1. Application Examples 1-11 and Comparative Examples 1-4 are prepared in the same manner, except that the components of the modified color paste used in the A phase are different, and the components and amounts of the B phase and C phase are the same.

[0207] (1) Preparation of the A phase color paste:

[0208] S1. 65 g of the modified iron red powder prepared in the above Examples 1-11 and Comparative Examples 1-4, respectively, is mechanically stirred and mixed with 2 g of PEG-10 dimethicone (Hunan Slocare, SiCare 2215) and 33 g of silicone oil (viscosity 1.5 cps), respectively, and then ground in a three-roll mill for three times to obtain the corresponding modified iron red paste. The modified iron red pastes obtained in Examples 1-11 and Comparative Examples 1-4 are denoted as B1-1, B1-2, B1-3, B1-4, B1-5, B1-6, B1-7, B1-8, B1-9, B1-10, B1-11, B1-12, B1-13, B1-14, and B1-15, respectively.

[0209] S2. 65 g of the modified iron yellow powder prepared in the above Examples 1-11 and Comparative Examples 1-4, respectively, is mechanically stirred and mixed with 2 g of PEG-10 dimethicone (Hunan Slocare, SiCare 2215) and 33 g of silicone oil (viscosity 1.5 cps), respectively, and then ground in a three-roll mill for three times to obtain the corresponding modified iron yellow paste. The modified iron yellow pastes obtained in Examples 1-10 and Comparative Examples 1-5 are denoted as B2-1, B2-2, B2-3, B2-4, B2-5, B2-6, B2-7, B2-8, B2-9, B2-10, B2-11, B2-12, B2-13, B2-14, and B2-15, respectively.

[0210] S3. Respectively take 50g of modified iron black powder prepared in the above-mentioned examples 1-11 and comparative examples 1-4, respectively, and mix with 2g of PEG-10 dimethicone (Hunan Slocore, SiCare2215) and 48g of silicone oil (viscosity of 1.5cps) by mechanical stirring, then put into a three-roll mill and grind for three times, respectively, to obtain the corresponding modified iron black paste. The modified iron black paste obtained from examples 1-10 and comparative examples 1-5 is recorded as B3-1, B3-2, B3-3, B3-4, B3-5, B3-6, B3-7, B3-8, B3-9, B3-10, B3-11, B3-12, B3-13, B3-14, B3-15, respectively.

[0211] S4. Respectively take 80g of modified titanium white powder prepared in the above-mentioned examples 1-11 and comparative examples 1-4, respectively, and mix with 2g of PEG-10 dimethicone (Hunan Slocore, SiCare2215) and 18g of silicone oil (viscosity of 1.5cps) by mechanical stirring, then put into a three-roll mill and grind for three times, respectively, to obtain the corresponding modified titanium white paste. The modified titanium white paste obtained from examples 1-10 and comparative examples 1-5 is recorded as B4-1, B4-2, B4-3, B4-4, B4-5, B4-6, B4-7, B4-8, B4-9, B4-10, B4-11, B4-12, B4-13, B4-14, B4-15, respectively.

[0212] S5. Respectively take the modified porous silica prepared in the above-mentioned examples 1-11 and comparative examples 1-4, and record them as B5-1, B5-2, B5-3, B5-4, B5-5, B5-6, B5-7, B5-8, B5-9, B5-10, B5-11, B5-12, B5-13, B5-14, B5-15, respectively.

[0213] (2) Preparation of the finished product of the base makeup:

[0214] S1. Respectively weigh the components of B phase and the components of C phase according to the feeding ratio, respectively, and then mix by mechanical stirring. After that, slowly add the C phase composition to the B phase composition under homogenization, and continue to homogenize for 15 min after the addition is completed, to obtain a mixed phase.

[0215] S2. Add the components of A phase to the mixed phase obtained in step S1 according to the ratio, and continue to stir for 15 min at 500 rpm after the addition is completed. After cooling to room temperature, fill and pack to obtain the base makeup.

[0216] Table 1

[0217]

[0218]

[0219] The above foundations were subjected to performance evaluation, and the evaluation results are shown in Table 2. The specific evaluation methods are as follows:

[0220] Dispersion: The appearance of the foundation was rated according to the uniformity of color and the size of the internal and external color difference, with 1st grade being color uniformity, no color band, and no obvious internal and external color difference; 2nd grade being slightly uneven color, slightly internal and external color difference, and slightly observed color band, but not affecting use; 3rd grade being uneven color, and observed color band; 4th grade being obviously uneven color, and obviously observed color band; and 5th grade being visible color band, and unable to be used as foundation.

[0221] Color change before and after application: The color before and after application of the foundation was compared, and the degree of color change before and after application was divided into 1-5 grades, wherein 1st grade was very small color difference before and after application, 2nd grade was slightly color difference, 3rd grade was color difference could be observed; 4th grade was obvious color difference; and 5th grade was larger color difference.

[0222] Stability: The above foundations were subjected to freeze-thaw stability (-15℃) and thermal stability (48℃) cross-cycling test for 15 days, and were divided into 1-5 grades according to the following evaluation criteria:

[0223] 1st grade: no any demulsification, oil floating, and layering phenomenon, and no obvious change in viscosity;

[0224] 2nd grade: slight demulsification and oil floating phenomenon, and slight change in viscosity;

[0225] 3rd grade: demulsification and oil floating phenomenon, and change in viscosity;

[0226] 4th grade: obvious demulsification and oil floating phenomenon, and large change in viscosity;

[0227] 5th grade: very obvious demulsification and oil floating phenomenon, and obvious layering.

[0228] Use feeling evaluation: The use feeling evaluation was carried out by using score test method, the full score of each sensory index was 5 grades, the sensory evaluation group included 10 group members, and the spreading property and uniformity and delicacy were evaluated according to the following score standard:

[0229] 1st grade: very good; 2nd grade: good; 3rd grade: medium; 4th grade: slightly poor; and 5th grade: poor.

[0230] Table 2

[0231]

[0232]

[0233] As can be seen from Table 2, the base makeup color obtained from application examples 1-4 and 8 of the present application is uniform, has excellent dispersibility and spreadability, has small color difference before and after application, is evenly applied, has good spreadability, and has excellent storage stability.

[0234] As can be seen from the comparison of application example 9 and application example 1, when the amount of the reactive organopolysiloxane is too low, the content of the reactive organopolysiloxane contained on the surface of the modified powder is too low, resulting in a decrease in the dispersibility, spreadability, use feeling, and color change before and after application of the base makeup obtained from the modified powder.

[0235] As can be seen from the comparison of application example 10 and application example 1, when the reaction temperature of the reactive organopolysiloxane and the powder is too low, complete reaction is difficult, resulting in a decrease in the dispersibility, spreadability, use feeling, and color change before and after application of the base makeup obtained from the modified powder.

[0236] As can be seen from the comparison of application comparative examples 1-3 and application example 1, when the reactive organopolysiloxane does not have the structure provided by the present application, the dispersibility, spreadability, use feeling, and color change before and after application of the base makeup obtained from the modified powder and containing the modified powder are poor.

[0237] As can be seen from the comparison of application comparative example 4 and application example 1, when the powder is not modified by adding the reactive organopolysiloxane, the dispersibility, spreadability, use feeling, and other properties of the base makeup containing the powder cannot meet the use requirements.

[0238] As can be seen from the comparison of application comparative example 5 and application example 1, the base makeup containing the modified powder modified by using octyl triethoxysilane has poor color change before and after application, dispersibility, spreadability, use feeling, and other properties.

[0239] In summary, the reactive organopolysiloxane provided by the present application has good reactivity and modification properties for the powder, the modified powder modified by the reactive organopolysiloxane has good dispersibility, the base makeup obtained from the modified powder has small color change before and after application, good spreadability, use properties, and excellent storage stability.

[0240] The above-described specific embodiments further illustrate the purpose, technical solutions, and beneficial effects of the present application, and it should be understood that the above-described embodiments are merely specific embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A reactive organopolysiloxane, characterized by, The reactive organopolysiloxane has a structure shown in Formula I: Formula I; wherein a is an integer of 1-100, b is an integer of 0-100, c is an integer of 1-100, d is an integer of 0-100; e is an integer of 1-100; n is an integer of 0-2; each X is independently selected from a divalent substituted or unsubstituted hydrocarbon group having 1-20 carbon atoms; each R 1 , R 3 is independently selected from a substituted or unsubstituted, linear or branched alkyl group of 1 to 30 carbon atoms, or an aryl or aralkyl group having a carbon atom number of 6 to 30; each R is independently selected from the group consisting of 1-18 carbon atom substituted or unsubstituted, and straight chain or branched alkyl groups; 2 each R is independently selected from the group consisting of 1-18 carbon atom substituted or unsubstituted, and straight chain or branched alkyl groups; 4 each R is independently selected from the group consisting of 1-18 carbon atom substituted or unsubstituted, and straight chain or branched each R is independently selected from the group consisting of 1-20 carbon atom substituted or unsubstituted, and straight-chained or branched alkyl groups; 5 independently selected from the group consisting of 1-20 carbon atom substituted or unsubstituted, and straight-chained or branched alkyl groups; each R is independently selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, and aryl of 6 to 12 carbon atoms; and 6 independently of one another, selected from the group consisting of alk Q independently represents a hydroxyl group or an alkoxy group; The raw materials for preparing the reactive organopolysiloxane include: hydrogenated polydialkylsiloxane, unsaturated silane, unsaturated fatty acid ester, monovinyl polysiloxane, and catalyst; the molar ratio between the unsaturated silane and the unsaturated fatty acid ester is (3-6):(3.5-6.5); the molar ratio between the unsaturated silane and the monovinyl polysiloxane is (3-6):(0.5-1); the number average molecular weight of the monovinyl polysiloxane is 500-2000 g / mol; the unsaturated fatty acid ester is one or more of methyl oleate, ethyl oleate, propyl oleate, butyl oleate, 2-octyldodecyl oleate, methyl 10-undecylenate, ethyl 10-undecylenate, methyl palmitoleate, ethyl palmitoleate, methyl eicosenoate, ethyl eicosenoate, methyl erucate, and ethyl erucate.

2. The reactive organopolysiloxane according to claim 1, characterized by, the n is 0.

3. The reactive organopolysiloxane according to claim 1, characterized by, the weight average molecular weight of the reactive organopolysiloxane is 1000-35000 g / mol.

4. The reactive organopolysiloxane according to claim 1, characterized by, the unsaturated silane is one or more of vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(2-methoxyethoxy)silane, methacryloyloxypropyltrimethoxysilane, allyltrimethoxysilane, allyltriethoxysilane, 7-octenyltrimethoxysilane, 3-(isobutenoyloxy)propyltrimethoxysilane, vinylmethyldiethoxysilane, and allylmethyldimethoxysilane.

5. A process for producing the reactive organopolysiloxane according to any one of claims 1 to 4, characterized by, comprising the following steps: mixing the unsaturated silane, the unsaturated fatty acid ester, the monovinyl polysiloxane, and the hydrogenated polydialkylsiloxane, and reacting in the presence of a catalyst to obtain the reactive organopolysiloxane.

6. The method for producing a reactive organopolysiloxane according to claim 5, characterized by, the catalyst is a platinum-based catalyst.

7. The method for producing a reactive organopolysiloxane according to claim 5, characterized by, the temperature of the reaction is 60-120℃.

8. Use of the reactive organopolysiloxane according to any one of claims 1-4 in the field of powder treatment.

9. A modified powder, characterized by, comprising a powder and a treating agent attached to the powder, the treating agent comprising the reactive organopolysiloxane and / or partial hydrolytic condensate thereof according to any one of claims 1-4; the weight ratio between the reactive organopolysiloxane and the powder is (3-5):

100.

10. The modified powder according to claim 9, wherein the powder comprises inorganic powder and / or organic powder.

11. A method for producing the modified powder as claimed in claim 9 or 10, characterized by, comprising the following steps: adding the reactive organopolysiloxane and optionally a first solvent to the powder, uniformly mixing, and then drying to obtain a modified powder.

12. The method of producing a modified powder according to claim 11, wherein the temperature of the drying is 40-200℃, and the time of the drying is 0.5-8h.

13. The method of producing a modified powder according to claim 11, wherein the temperature of the drying is 60-100℃, and the time of the drying is 1-4h.

14. A foundation characterized in that, comprising the modified powder according to claim 9 or 10 and a water-in-silicone emulsion.

15. The base makeup of claim 14, wherein, the mass ratio between the modified powder and the water-in-silicone emulsion is (9-15):(80-83).

16. The base makeup of claim 14, wherein, The preparation raw materials of the water-in-silicone emulsion include A component and B component, the A component includes components with the following weight parts: moisturizing oil 17-25 parts, silicone elastomer 2-6 parts, water-in-oil emulsifier 2-6 parts, mineral thickening agent 0.7-1.1 parts; the B component includes components with the following weight parts: moisturizing component 7.5-15.5 parts, water 37-41 parts, electrolyte 0.7-1.1 parts.

17. A method of preparing a base makeup as claimed in any one of claims 14 to 16, characterised in that, The method comprises the following steps: S1. After mixing the modified powder, the second solvent and the surfactant, the modified powder slurry is ground; S2. After mixing the modified powder slurry and the water-in-silicone emulsion uniformly, the foundation makeup is obtained by filling into a container.

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