A method for producing a liquid powder and the product

Abstract

This invention relates to a method for preparing a liquid powder and the product thereof, comprising: adding 5-10 times the weight of deionized water (based on the weight of the first component) to a reaction vessel, controlling the temperature at 60-80℃, maintaining the reaction vessel at a constant temperature of 80℃, and stirring; adding 1-10% sodium silicate (based on the weight of the first component) and continuously stirring until completely dissolved; slowly adding dilute hydrochloric acid during the constant-temperature stirring process, resulting in the formation of a precipitate, and maintaining constant temperature heating during the reaction; adding the first component to the reaction vessel while continuously stirring, resulting in silicic acid precipitate, stirring for 1 hour until homogeneous; pressing and filtering to obtain a moist filter cake, controlling the moisture content of the filter cake to be between 10% and 30%; placing the filter cake into a horizontal mixer for stirring, adding triisostearic acid isopropoxytitanium salt, stirring until homogeneous to form a uniform dough state, and continuously stirring for 30 minutes to 1 hour; removing the product and sending it to a hot air circulating oven, setting the temperature to 110℃-130℃, drying for 18-24 hours; and finally pulverizing it finely with a hammer mill to obtain the finished product.

Description

Technical Field

[0001] This invention relates to the field of hydrophobic powder modification technology, and more specifically, to a method for preparing liquid powder and a product thereof. Background Technology

[0002] Currently, the development of powder-based makeup products (such as eyeshadow, blush, and pressed powder) and base makeup products (such as liquid foundation, BB cream, and primer) often requires the addition of large amounts of powder to ensure coverage, color saturation, and skin feel. However, when the amount of powder added exceeds 25% of the total formula, a series of unavoidable problems arise:

[0003] 1. The viscosity of the system increases sharply, which leads to a decrease in the fluidity of the material, making processing and filling difficult;

[0004] 2. Limited compatibility options: High-viscosity systems are difficult to integrate with various oils and active ingredients, significantly reducing formulation flexibility;

[0005] 3. Poor product quality, specifically manifested as stickiness, difficulty in spreading, uneven application, and even clumping or creasing, seriously affecting the makeup experience and effect.

[0006] Therefore, the market urgently needs a functional raw material that can effectively reduce the wetting point of powders—that is, powders that can be quickly wetted and dispersed by the oil phase under low shear force. This functional powder (or "liquid powder") with low wetting point characteristics can maintain low viscosity, good fluidity, and silky spreadability even at high addition levels, thus breaking through the technical bottleneck of "high powder content inevitably leads to thick consistency" in powder-based makeup and foundation, and providing formulators with a wider range of innovation possibilities.

[0007] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0008] The purpose of this invention is to provide a method for preparing liquid powder and a product thereof. This method can modify the surface of hydrophobic powder with triisostearic acid isopropoxytitanium salt, thereby achieving further modification of the hydrophobic powder.

[0009] This invention provides a method for preparing liquid powder, comprising the following steps:

[0010] S1: Add 5-10 times the weight of the first component of deionized water to the reactor. The temperature of the deionized water is controlled at 60-80℃. The reactor is kept at a constant temperature of 80℃. Stir the deionized water.

[0011] S2: Add 1-10% sodium silicate by weight of the first component and stir continuously until completely dissolved;

[0012] S3: During the constant temperature stirring process, dilute hydrochloric acid is slowly added, and a precipitate is formed in the solution. The constant temperature heating is maintained during the reaction until the reaction is complete.

[0013] S4: Add the first component to the reactor while stirring continuously. The precipitate formed is silicic acid. Stir for 1 hour to ensure that it is fully mixed.

[0014] S5: The filter cake is moistened by pressure filtration, and the moisture content of the filter cake is controlled to be between 10% and 30%.

[0015] S6: Put the filter cake into a horizontal mixer and stir. Add triisostearic acid isopropoxytitanium salt and stir until a uniform dough is formed. Continue stirring for 30 minutes to 1 hour.

[0016] S7: Take out the well-mixed dough-like product and put it into a hot air circulating oven. Set the temperature to 110℃-130℃ and dry for 18-24 hours.

[0017] S8: The hammer mill produces finely ground finished products.

[0018] Furthermore, the first component is at least one of the following: synthetic fluorophlogopite, mica, sericite, talc, silica, titanium dioxide, and iron oxide, with the surface modified by silicone oil, and the first component is 100 parts by weight.

[0019] Further, the first component is at least one of magnesium myristate, magnesium stearate, and lauroyl lysine, the surface of which has been modified with silicone oil, and the first component is 100 parts by weight.

[0020] Furthermore, step S6 further includes adding a second component and stirring until homogeneous for 30 minutes to 1 hour, wherein the second component is at least one of triethoxyoctylsilane, polydimethylsiloxane, and polymethylsiloxane.

[0021] The present invention also provides a liquid powder product, which is prepared by the above-described liquid powder preparation method.

[0022] The method for preparing liquid powder provided by this invention modifies the surface of hydrophobic powder with triisostearic acid isopropoxytitanium salt to further modify the hydrophobic powder, thereby effectively reducing the wetting point of the powder. This solves the technical problem that when developing foundations containing a large amount of powder, the viscosity of the system increases due to the excessive amount of powder added (usually exceeding 25%), which affects the compatibility of the foundation. This invention also solves the technical problem that the existing foundations are thick and difficult to spread due to excessive powder content, resulting in an unsatisfactory finished product texture. Attached Figure Description

[0023] Figure 1 This is a schematic flowchart of the method for preparing liquid powder provided in Embodiment 1 of the present invention. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] Example 1

[0027] Figure 1 This is a schematic flowchart of the method for preparing liquid powder according to Embodiment 1 of the present invention. Please refer to... Figure 1 The method for preparing liquid powder provided in this embodiment of the invention includes the following steps:

[0028] S1: Add 5-10 times the weight of the first component of deionized water to the reactor. The temperature of the deionized water is controlled at 60-80℃. The reactor is kept at a constant temperature of 80℃. Stir the deionized water.

[0029] It should be noted that the first component of the present invention is at least one of the following: synthetic fluorophlogopite, mica, sericite, talc, silica, titanium dioxide, and iron oxide, whose surface has been modified with silicone oil; or the first component is at least one of the following: magnesium myristate, magnesium stearate, and lauroyl lysine, whose surface has been modified with silicone oil, wherein the first component is 100 parts by weight.

[0030] S2: Add 1-10% sodium silicate by weight of the first component and stir continuously until completely dissolved;

[0031] S3: During constant temperature stirring, dilute hydrochloric acid is slowly added, and a precipitate is formed in the solution. This reaction is an endothermic reaction. During the reaction, the temperature is kept constant until the reaction is complete.

[0032] S4: Add the first component to the reactor while continuously stirring. The precipitate formed is silicic acid (silicic acid precipitate has strong reactivity and viscosity, which can bind hydrophobic powders and make them mix smoothly with aqueous solutions). Stir for 1 hour to make it fully and evenly mixed.

[0033] It should be noted that the first component should be added slowly to prevent it from being added too much and not being stirred evenly, thus causing it to float on the surface of the liquid.

[0034] S5: The filter cake is moistened by pressure filtration, and the moisture content of the filter cake is controlled to be between 10% and 30%.

[0035] S6: Put the filter cake into a horizontal mixer and stir. Add triisostearic acid isopropoxytitanium salt and stir until a uniform dough is formed. Continue stirring for 30 minutes to 1 hour.

[0036] It should be noted that, if necessary, step S6 may further include: adding a second component and stirring until homogeneous for 30 minutes to 1 hour, wherein the second component is at least one of triethoxyoctylsilane, polydimethylsiloxane, and polymethylsiloxane.

[0037] S7: Take out the well-mixed dough-like product and put it into a hot air circulating oven. Set the temperature to 110℃-130℃ and dry for 18-24 hours.

[0038] S8: The hammer mill produces finely ground finished products.

[0039] The method for preparing liquid powder provided by this invention modifies the surface of hydrophobic powder with triisostearic acid isopropoxytitanium salt to further modify the hydrophobic powder, thereby effectively reducing the wetting point of the powder. This solves the technical problem that when developing foundations containing a large amount of powder, the viscosity of the system increases due to the excessive amount of powder added (usually exceeding 25%), which affects the compatibility of the foundation. This invention also solves the technical problem that the existing foundations are thick and difficult to spread due to excessive powder content, resulting in an unsatisfactory finished product texture.

[0040] Example 2

[0041] This embodiment provides a liquid powder product, which is prepared using the liquid powder preparation method of Example 1.

[0042] As can be seen from the above description, the advantages of this invention are:

[0043] 1. The method for preparing liquid powder of the present invention further modifies the hydrophobic powder by surface modification with triisostearic acid isopropoxytitanium salt, thereby effectively reducing the wett point of the powder.

[0044] 2. The liquid powder preparation method of the present invention solves the technical problem that when developing existing base makeup products containing a large amount of powder, the viscosity of the system increases due to the excessive amount of powder added (usually exceeding 25%), which affects the compatibility selection of the base makeup.

[0045] 3. The liquid powder preparation method of the present invention solves the technical problem that the existing base makeup has an unsatisfactory texture due to the excessive amount of powder, which makes it sticky and difficult to spread.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for preparing a liquid powder, characterized in that, Includes the following steps: S1: Add 5-10 times the weight of the first component of deionized water to the reactor. The temperature of the deionized water is controlled at 60-80℃. The reactor is kept at a constant temperature of 80℃. Stir the deionized water. S2: Add 1-10% sodium silicate by weight of the first component and stir continuously until completely dissolved; S3: During the constant temperature stirring process, dilute hydrochloric acid is slowly added, and a precipitate is formed in the solution. The constant temperature heating is maintained during the reaction until the reaction is complete. S4: Add the first component to the reactor while stirring continuously. The precipitate formed is silicic acid. Stir for 1 hour to ensure that it is fully mixed. S5: The filter cake is moistened by pressure filtration, and the moisture content of the filter cake is controlled to be between 10% and 30%. S6: Put the filter cake into a horizontal mixer and stir. Add triisostearic acid isopropoxytitanium salt and stir until a uniform dough is formed. Continue stirring for 30 minutes to 1 hour. S7: Take out the well-mixed dough-like product and put it into a hot air circulating oven. Set the temperature to 110℃-130℃ and dry for 18-24 hours. S8: The hammer mill produces finely ground finished products.

2. The method for preparing liquid powder according to claim 1, characterized in that, The first component is at least one of the following: synthetic fluorophlogopite, mica, sericite, talc, silica, titanium dioxide, and iron oxide, with the surface modified by silicone oil. The first component is 100 parts by weight.

3. The method for preparing liquid powder according to claim 1, characterized in that, The first component is at least one of magnesium myristate, magnesium stearate, and lauroyl lysine, whose surfaces have been modified with silicone oil, and the first component is 100 parts by weight.

4. The method for preparing liquid powder according to claim 1, characterized in that, Step S6 further includes: adding a second component and stirring evenly for 30 minutes to 1 hour, wherein the second component is at least one of triethoxyoctylsilane, polydimethylsiloxane, and polymethylsiloxane.

5. A liquid powder product, characterized in that, The liquid powder product is prepared using the liquid powder preparation method described in any one of claims 1-4.

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