High-oil-content emulsified compound as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a high-oil-content emulsified compound as well as a preparation method and application thereof. The emulsified compound with high oil content is prepared from lysolecithin, lecithin, simmondsia chinensis seed oil and glycerol polyacrylate; the emulsified compound with the high oil content can emulsify cream with the oil content of 25% or above, emulsified particles formed through emulsification are fine and uniform, good in stability and beneficial to permeation, and the emulsified compound with the high oil content has good application prospects in the field of cosmetics.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a high-oil-content emulsified complex and a preparation method and application thereof. Background Art

[0002] Emulsification is the process of evenly dispersing a liquid in another immiscible liquid in the form of tiny droplets. Emulsification is a liquid-liquid interface phenomenon where two immiscible liquids, such as oil and water, are separated into two layers in a container, with the oil of lower density in the upper layer and the water of higher density in the lower layer. If an appropriate surfactant is added and stirred vigorously, the oil is dispersed in the water to form an emulsion. This process is called emulsification.

[0003] An emulsion is a system formed by two immiscible liquids, one dispersed in the other in the form of particles (droplets or liquid crystals). When an emulsion is formed, the interfacial area of ​​the two liquids increases, so this system is thermodynamically unstable. In order to stabilize the emulsion, a third component, an emulsifier, must be added to reduce the interfacial energy of the system. Emulsifiers are a type of surfactant, and their typical function is to emulsify. The phase in the emulsion that exists in the form of droplets is called the dispersed phase, or the internal phase or discontinuous phase; and the other phase that is connected into one piece is called the dispersion medium, or the external phase or continuous phase.

[0004] Emulsions are the most common dosage form in cosmetics, ranging from watery fluids to viscous creams, etc. Therefore, the discussion of emulsions is of great significance to the research and production, as well as the preservation and use of cosmetics.

[0005] The existing lecithin emulsification technology is difficult to emulsify creams with high oil content, and the emulsified particles are large and uneven, which is not conducive to skin penetration and has poor stability.

[0006] The patent application with application number: 202411078805.8 discloses a modified hyperbranched demulsifier and its preparation process and application, which belongs to the field of petrochemical technology. The preparation process comprises the following steps: Step 1: preparing a hyperbranched polymer; Step 2: preparing an amphiphilic surfactant; Step 3: preparing a modified hyperbranched demulsifier: (1) preparing a hyperbranched modified carbon nanotube; (2) preparing a surfactant-modified carbon nanotube; (3) mixing a hyperbranched modified carbon nanotube and a surfactant-modified carbon nanotube in a mass ratio of (1.4-1.7):1 to obtain a modified hyperbranched demulsifier. The modified hyperbranched demulsifier of the invention has high salt resistance and a small amount of use, and can achieve high-efficiency demulsification of water-in-oil crude oil emulsions at room temperature. It is also suitable for demulsifying oil-in-water crude oil emulsion systems or purified oils with high water content, has a wider range of adaptability, and has a higher market value. However, it cannot be used in the preparation of cosmetics.

[0007] The patent application with application number: 202410983243.5 discloses an ethanol-free long-lasting emulsified perfume and a preparation method thereof. The components include: phase A, phase B, phase C, and phase D; the phase A includes an emulsifier; the phase B includes a polyol; the phase C includes a fragrance and an emollient; the phase D includes a moisturizer. The invention adopts a specific emulsification process to be more conducive to obtaining a stable emulsion. The prepared emulsified perfume does not contain alcohol, has a certain viscosity and consistency, and has a smooth and delicate skin feel without greasy feeling. The present invention utilizes the sustained-release characteristics of the emulsification system to achieve long-lasting fragrance. By optimizing the use of emulsifiers, especially using an emulsifier combination including PEG-60 hydrogenated castor oil, PEG-7 olive oil ester, PEG-8 glyceryl isostearate and hydrogenated lecithin, not only the stability of the perfume is improved, but also the sprayability of the perfume is improved, and the atomization effect is good. However, it is not suitable for preparing creams. Summary of the invention

[0008] Based on the above technical background, the main purpose of the present invention is to provide a high-oil content emulsified complex and a preparation method and application thereof, so as to overcome the deficiencies in the prior art.

[0009] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0010] The first aspect of the present invention is to provide a high-oil emulsified complex, which is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.01-4): (0.01-1): (1-20): (0.01-3).

[0011] Preferably, the high-oil emulsified complex is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3): (0.05-0.7): (5-15): (0.05-2).

[0012] Preferably, the lecithin is selected from one or more of soybean lecithin, phospholipids, phosphatidylcholine, hydroxylated lecithin, hydrogenated soybean lecithin, hydrogenated phosphatidylcholine, and hydrogenated lecithin.

[0013] More preferably, the lecithin is hydrogenated lecithin.

[0014] More preferably, the high-oil emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3):(0.05-0.7):(5-15):(0.05-2).

[0015] More preferably, the high-oil emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of 2:0.5:10:1.5.

[0016] The second aspect of the present invention is to provide a method for preparing the high-oil content emulsified complex according to the first aspect of the present invention, the preparation method comprising the following steps:

[0017] Weigh each raw material, stir evenly after heating, and filter out the material to obtain a high-oil content emulsified complex.

[0018] Preferably, each raw material is weighed, heated to 75-85° C., stirred for 5-10 minutes, filtered through a 50-100 mesh filter membrane, and discharged to obtain a high-oil content emulsified complex.

[0019] The third aspect of the present invention is to provide an application of the high-oil-content emulsified complex described in the first aspect of the present invention in the field of cosmetics.

[0020] The beneficial effects of the present invention are:

[0021] (1) The high-oil emulsified complex is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate; the high-oil emulsified complex is a mixed cross-type structure having both a truncated cone structure and a cone structure, so that the complex of the present invention has the advantages of high stability of the truncated cone structure, and at the same time has the advantages of small, uniform particle size and high permeability of the cone structure particles.

[0022] (2) The high-oil emulsified complex can emulsify creams with an oil content of more than 25%, and has the advantages of small emulsified particles, uniform emulsified particles, good stability, good penetration, good emulsification effect, and high stability.

[0023] (3) The preparation method of the high-oil-content emulsified complex of the present invention is simple, has a good emulsifying effect on creams with an oil content of more than 25%, and has high stability. The preparation method can be scaled up for industrial production;

[0024] The cosmetics prepared from the high-oil-content emulsified complex have high permeability to the skin, are conducive to better exerting the effect of the cosmetics, and have good application effects in the cosmetics field. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A microscopic photograph showing a cream made from the composite described in Example 1;

[0026] Figure 2 A microscope photograph of a cream prepared from the composite of Comparative Example 1 is shown;

[0027] Figure 3A microscope photograph of a cream prepared from the composite described in Comparative Example 2 is shown;

[0028] Figure 4 The stability test photos of the creams prepared in Example 1 and Comparative Example 2 are shown. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below, and the characteristics and advantages of the present invention will become clearer and more distinct with the description.

[0030] The first aspect of the present invention is to provide a high-oil emulsified complex, which is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.01-4): (0.01-1): (1-20): (0.01-3).

[0031] Preferably, the high-oil emulsified complex is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3): (0.05-0.7): (5-15): (0.05-2).

[0032] The lecithin is selected from one or more of soybean lecithin, phospholipids, phosphatidylcholine, hydroxylated lecithin, hydrogenated soybean lecithin, hydrogenated phosphatidylcholine, and hydrogenated lecithin.

[0033] Preferably, the lecithin is hydrogenated lecithin.

[0034] According to a preferred embodiment of the present invention, the high-oil emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3): (0.05-0.7): (5-15): (0.05-2).

[0035] According to a further preferred embodiment of the present invention, the high-oil content emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of 2:0.5:10:1.5.

[0036] The particle size of the high-oil-content emulsified complex of the present invention is 0.1 to 0.15 μm.

[0037] The stacking parameter p = V / Ao×lc, where V and lc represent the volume and extended chain length of the emulsifier molecule, respectively, and Ao is the projected area of ​​the emulsifier molecule. When the stacking parameter is between 0.5 and 1, the composite molecule is a truncated cone structure, and the particles are easy to form a double-layer structure, which is easy to stabilize, but the particle diameter is too large and not conducive to penetration; when the stacking constant is less than 0.5, the composite molecule is a cone structure, and the particles are easy to form a tightly packed single-layer structure, and the particle diameter is small but not conducive to stability.

[0038] The stacking parameter of lecithin is greater than 0.5, and it is a truncated cone structure, so it is easy to form a double-layer liposome structure. The complex of the present invention combines truncated cone and cone structure molecules to form a mixed cross structure, which is beneficial to the stability of the complex structure. At the same time, the fine particles formed have uniform particle size and small particle size, which is conducive to penetration.

[0039] The second aspect of the present invention is to provide a method for preparing the high-oil content emulsified complex according to the first aspect of the present invention, the preparation method comprising the following steps:

[0040] Weigh each raw material, stir evenly after heating, and filter out the material to obtain a high-oil content emulsified complex.

[0041] Preferably, each raw material is weighed, heated to 75-85° C., stirred for 5-10 minutes, filtered through a 50-100 mesh filter membrane, and discharged to obtain a high-oil content emulsified complex.

[0042] More preferably, each raw material is weighed, heated to 80° C., stirred for 7 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a high-oil-content emulsified complex.

[0043] The third aspect of the present invention is to provide an application of the high-oil-content emulsified complex described in the first aspect of the present invention in the field of cosmetics.

[0044] Preferably, the high oil content emulsified complex can be used to prepare a cream. The cream is prepared by the following steps:

[0045] The water, glycerin and high oil content emulsified complex are heated and stirred to dissolve, dispersed evenly at 78-85°C and then cooled to obtain a cream.

[0046] Example

[0047] The present invention is further described below by specific examples, which are limited to illustrating the present invention but not to limiting the scope of the present invention. The raw materials used in the examples and comparative examples of the present invention were all purchased.

[0048] Lysolecithin was purchased from supplier Lucas Meyer Cosmetics;

[0049] Hydrogenated lecithin was purchased from NIPPON SURFACTANT INDUSTRIES CO., LTD.

[0050] Jojoba seed oil was purchased from supplier Vantage Specialty Chemicals, Inc;

[0051] Glycerol polyacrylate was purchased from BASF (China) Co., Ltd.

[0052] Example 1

[0053] Weigh the raw materials of lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate according to the mass ratio of 2:0.5:10:1.5.

[0054] The weighed raw materials were heated to 80°C, stirred for 7 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a high-oil-content emulsified complex.

[0055] Example 2

[0056] Weigh the raw materials of lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate according to the mass ratio of 0.05:0.05:5:0.05.

[0057] The weighed raw materials were heated to 75°C, stirred for 10 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a high-oil-content emulsified complex.

[0058] Example 3

[0059] Weigh the raw materials of lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of 3:0.7:15:2.

[0060] The weighed raw materials were heated to 85°C, stirred for 5 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a high-oil-content emulsified complex.

[0061] Comparative Example

[0062] Comparative Example 1

[0063] Weigh the raw materials of lysolecithin, jojoba seed oil and glycerol polyacrylate according to the mass ratio of 2:10:1.5.

[0064] The weighed raw materials were heated to 80°C, stirred for 7 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a composite.

[0065] Comparative Example 2

[0066] Weigh hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of 0.5:10:1.5.

[0067] The weighed raw materials were heated to 80°C, stirred for 7 minutes, filtered through an 80-mesh filter membrane, and discharged to obtain a composite.

[0068] Experimental example

[0069] Experimental Example 1 Emulsification Performance Test

[0070] The complexes prepared in Example 1, Comparative Example 1 and Comparative Example 2 were respectively mixed with water and glycerin in a mass ratio of 2:2:1, and then heated to 78-85° C., stirred and dissolved, and cooled after being evenly dispersed to obtain a cream.

[0071] At room temperature, the obtained creams were observed under a microscope at a magnification of 40 times. The microscope photos of the creams obtained in Example 1 are as follows: Figure 1 As shown, the microscope photo of the cream prepared in Comparative Example 1 is as follows Figure 2 As shown, the microscope photo of the cream prepared in Comparative Example 2 is as follows Figure 3 shown.

[0072] from Figure 1 It can be seen that the complex prepared in Example 1 can emulsify a cream formula with an oil content of more than 25%, and the emulsified particles are fine and uniform, and the cream formula obtained by emulsification is stable. Figure 2 and Figure 3 The emulsified particles of the complexes prepared in Comparative Examples 1 and 2 are relatively large, uneven, and the emulsified cream is unstable. This indicates that the complex of the present invention can emulsify a cream formula with an oil content of more than 25%, and the emulsified particles are fine and uniform, the emulsification is stable, and the emulsification effect is good.

[0073] Experimental Example 2: Stability Test

[0074] The creams prepared in Example 1 and Comparative Example 2 (prepared according to the method described in Experimental Example 1) were subjected to stability tests and placed at a high temperature of 50° C. for one month. The test results are as follows: Figure 4 shown.

[0075] Figure 4 In the figure, the cream of Comparative Example 2 (left) has been stratified, while the cream of Example 1 (right) has not been stratified, indicating that the cream emulsified by the complex of the present invention has better stability.

[0076] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A high oil content emulsified compound, characterized in that: The high-oil-content emulsified complex is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.01-4): (0.01-1): (1-20): (0.01-3).

2. The high oil content emulsified compound according to claim 1, characterized in that The high-oil-content emulsified complex is prepared from lysolecithin, lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3): (0.05-0.7): (5-15): (0.05-2).

3. The high oil content emulsified compound according to claim 1, characterized in that The lecithin is selected from one or more of soybean lecithin, phospholipids, phosphatidylcholine, hydroxylated lecithin, hydrogenated soybean lecithin, hydrogenated phosphatidylcholine, and hydrogenated lecithin.

4. The high oil content emulsified compound according to claim 3, characterized in that The lecithin is hydrogenated lecithin.

5. The high oil content emulsified compound according to claim 4, characterized in that The high-oil-content emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of (0.05-3): (0.05-0.7): (5-15): (0.05-2).

6. The high-oil emulsified compound according to claim 5, characterized in that The high-oil-content emulsified complex is prepared from lysolecithin, hydrogenated lecithin, jojoba seed oil and glycerol polyacrylate in a mass ratio of 2:0.5:10:1.

5.

7. A method for preparing the high-oil content emulsified compound according to any one of claims 1 to 6, characterized in that: The preparation method comprises the following steps: Weigh each raw material, stir evenly after heating, and filter the material to obtain a high-oil content emulsified complex.

8. The preparation method according to claim 7, characterized in that: Weigh each raw material, heat to 75-85°C, stir for 5-10 minutes, filter through a 50-100 mesh filter membrane, and discharge to obtain a high-oil content emulsified complex.

9. Use of the high-oil-content emulsified complex according to any one of claims 1 to 6 in the field of cosmetics.

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