CN113712827B

CN113712827B - Spray emulsion product containing silicate and sodium surfactin and preparation method thereof

Info

Publication number: CN113712827B
Application number: CN202110940099.3A
Authority: CN
Inventors: 吴旭; 陈晗俊; 庄洁; 段国兰; 安冬; 徐婷; 邵萌; 李慧良
Original assignee: Bloomage Biotech Co Ltd
Current assignee: Bloomage Biotech Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2023-08-04
Anticipated expiration: 2041-08-20
Also published as: CN113712827A

Abstract

The invention belongs to the field of daily cosmetics, and discloses a spray emulsion product and a preparation method thereof. The invention provides a high-viscosity emulsion product in a spray form for the first time, and the emulsion product introduces sodium surfactin and silicate raw materials, so that the problem that the emulsion cannot be sprayed out due to high viscosity is solved, the traditional thinking mode that only hydrophilic raw materials or only low-viscosity flowing liquid can be sprayed is broken, and the emulsion is endowed with good stability; meanwhile, the spray emulsion can contain an oil phase as an emulsion product, so that more oil-soluble active substances can be applied to a spray formula, and the defect that the existing aqueous emulsion product must be matched with a product containing grease for use is overcome.

Description

Spray emulsion product containing silicate and sodium surfactin and preparation method thereof

Technical Field

The invention belongs to the field of daily cosmetics, and particularly relates to a spray emulsion product containing silicate and sodium surfactin and a preparation method thereof.

Background

Aerosol type aerosol cans in which liquid and gas which can be ejected as fine particles are stored under pressure and which are harmful to the environment, and non-aerosol type aerosol cans. The non-aerosol sprayer, also called manual sprayer, uses the principle of spraying liquid by air to realize the spraying function, does not harm the environment, and is preferably used.

Based on the principle of spraying a liquid, most of the conventional commercial non-aerosol sprayers are composed of pure hydrophilic materials or are low-viscosity flowing liquids. However, although the spray is fresh and comfortable, if the moisturizing emulsion or the face cream is not rubbed again, the moisture on the skin surface is taken away after the spray is evaporated, but the spray is drier, and the grease-containing product still needs to be matched to delay the moisture loss. In addition, the traditional spray uses water as a matrix, so that the addition of other raw materials such as oil solubility and the like in a spray formulation is limited, and the use of the spray is influenced.

Disclosure of Invention

The invention provides a spray emulsion product, which introduces sodium surfactin and silicate raw materials, solves the problem that emulsion cannot be sprayed out due to high viscosity, breaks through the traditional thinking mode that only hydrophilic raw materials or only low-viscosity flowing liquid can be sprayed, and endows the emulsion with good stability; meanwhile, the spray emulsion as an emulsion product contains an oil phase, so that more oil-soluble efficacy active substances can be applied to a spray formula.

The technical scheme of the invention is as follows:

a spray emulsion product comprising silicate and sodium surfactin.

As a preferred scheme of the spray emulsion product, the silicate is selected from one or more of magnesium silicate, and further preferably, the silicate is selected from one or more of magnesium aluminum silicate, lithium magnesium sodium silicate and sodium magnesium silicate.

As a preferred embodiment of the spray emulsion product, the silicate content is 1-10% by weight.

As a preferable scheme of the spray emulsion product, the content of the sodium surfactin is 0.1-10% by weight percent.

As a preferred embodiment of the spray emulsion product, the silicate content is 2-5% by weight.

As a preferable scheme of the spray emulsion product, the content of the sodium surfactin is 0.5-2% by weight percent.

As a preferable scheme of the spray emulsion product, the mass ratio of the sodium surfactin to the silicate is 1:0.2-50.

As a preferred scheme of the spray emulsion product, the mass ratio of the sodium surfactin to the silicate is 1:1-10.

As a preferable scheme of the spray emulsion product, the spray emulsion product comprises polyalcohol and grease, wherein the weight percentage of the polyalcohol is 1-50%, and the weight percentage of the grease is 1-50%.

The polyhydric alcohol and the fat are all known in the art, and the specific reagent to be selected in the present invention is not particularly limited, and for example, the polyhydric alcohol may be one or more of glycerin, butylene glycol and propylene glycol, and the fat may be one or more of caprylic/capric triglyceride, ethylhexyl palmitate and squalane. The polyol and grease act as an oil phase which allows more oil-soluble efficacy actives to be used in spray formulations.

As a preferred embodiment of the spray emulsion product, the spray emulsion product further comprises an oil-soluble active ingredient, wherein the oil-soluble active ingredient is at least one of active ingredients with whitening, antioxidant, acne removing, exfoliating, moisturizing, oil controlling, allergy soothing and anti-inflammatory effects. Some specific examples of active ingredients having whitening, antioxidant, acne removing, exfoliating, moisturizing, oil controlling, allergy soothing, and anti-inflammatory effects may be selected with reference to the ingredients listed in the existing patent literature or books.

Based on the same inventive concept, the invention also provides a preparation method of the spray emulsion product, which comprises the following steps:

(1) Preparing phase A and phase B: mixing sodium surfactin, grease and polyalcohol to obtain phase A; preparing silicate aqueous solution to obtain phase B; wherein, the order of preparing the phase A and the phase B is not sequential;

(2) Adding phase A into phase B, mixing to obtain uniform and stable mixture, standing to form non-flowing oil-in-water solid emulsion, and packaging.

In a specific embodiment, the form of sodium surfactin may preferably be a powder.

As a preference for the preparation of the spray emulsion product, the silicate is selected from one or more of magnesium silicate salts.

As a preferable method for preparing the spray emulsion product, the silicate is selected from one or more of magnesium aluminum silicate, sodium magnesium lithium silicate and magnesium lithium silicate.

As a preferred method for preparing the spray emulsion product, the silicate content is 1-10% by weight.

As a preferable preparation method of the spray emulsion product, the content of the sodium surfactin is 0.1-10% by weight percent.

As a preferred method for preparing the spray emulsion product, the silicate content is 2-5% by weight.

As a preferable preparation method of the spray emulsion product, the content of the sodium surfactin is 0.5-2% by weight percent.

As a preference for the spray emulsion product, the mass ratio of the sodium surfactin to the silicate is 1:0.2-50.

As a preference for the spray emulsion product, the mass ratio of the sodium surfactin to the silicate is 1:1-10.

As a preferred method for preparing the spray emulsion product, the spray emulsion product further comprises an oil-soluble active ingredient, wherein the oil-soluble active ingredient is at least one selected from active ingredients with whitening, anti-aging and acne-removing effects, and the oil-soluble active ingredient is added in the phase A in the step (1).

The invention has the following beneficial effects:

1. the silicate (such as aluminum magnesium silicate) and the sodium surfactin are added into the emulsion, so that the problem that the emulsion with high viscosity cannot be sprayed is solved, the traditional thinking mode that only hydrophilic raw materials or only low-viscosity flowing liquid can be sprayed is broken, and a brand new emulsion product with high viscosity and smooth spraying through a sprayer is provided.

2. The aluminum magnesium silicate and the sodium surfactin are reasonably compounded in the spray emulsion, so that the emulsion can be sprayed out without adding other components such as an emulsifier, the stability of the emulsion is improved, the phenomena of water-oil layering and the like are avoided, the emulsion particle size is small, and the emulsion is easier to be absorbed by skin.

3. The spray emulsion product of the present invention achieves the incorporation of an oil phase into the spray product, thereby allowing more oil-soluble actives to be used in the spray formulation.

Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.

Drawings

FIG. 1 is a graph showing the viscosity as a function of shear rate for emulsions prepared in examples 1-11, comparative example 1, comparative example 2, comparative example 4, comparative example 5 of the present invention;

fig. 2a, 2b, 2c and 2d are photographs of emulsified particles of example 1, comparative example 1, example 10 and comparative example 5, respectively, under a high power microscope.

Detailed Description

The invention provides a spray emulsion product which is characterized by containing silicate and sodium surfactin.

Wherein, the sodium surfactin (SODIUM SURFACTINHYDROGENATED LECITHIN) is prepared by fermenting a high-yield strain of the bacillus subtilis, has biodegradability, good biocompatibility and ultra-low irritation, and has stable physical and chemical properties, and has been identified by toxicology and hygiene; the sodium surfactin is not only a surfactant and biological emulsifier with excellent performance, but also has strong antibacterial and bacteriolytic effects and the function of inhibiting the aggregation of blood cellulose.

Magnesium aluminum silicate (MAGNESIUM ALUMINUM SILICATE), also known as magnesium aluminum metasilicate, is a substance with very large specific surface area and very developed micropore system, can be used as an adsorbent, a moisture-proof agent and the like, can absorb three times of mass of liquid, is insoluble in water and alcohol, and is usually compounded with a polymer thickener to be used as a thickener in cosmetics.

Compared with other thickeners, the magnesium aluminum silicate has very high thixotropic fluidity, namely, the viscosity is reduced when the magnesium aluminum silicate is sheared by external force, so that the magnesium aluminum silicate can be immediately changed into a flowable liquid, and the magnesium aluminum silicate can be immediately reduced into a non-flowable state when the external force is eliminated. The invention utilizes the thixotropic property of aluminum magnesium silicate to realize that high-viscosity emulsion can be made into spray to be sprayed successfully, but only aluminum magnesium silicate is added, the product with high oil phase content is easy to be layered due to instability, therefore, the invention also selects sodium surfactin as a proper emulsifier, compared with other emulsifiers, the thixotropic property of the emulsion is not changed after the sodium surfactin is emulsified, the emulsifying property is excellent, the product stability is good, and the emulsified particles are small and are easier to be absorbed.

Besides magnesium aluminum silicate, other silicates such as lithium magnesium silicate, lithium magnesium sodium silicate, sodium magnesium silicate and the like have the effects of thickening, suspending, thixotropic and the like, and can be used for replacing the magnesium aluminum silicate, but the thickening effect and the ion resistance are different. If too much ions are present in the formulation, a silicate or a combination of silicates may be required, which can be adjusted by the person skilled in the art under the principle and which is not described in detail here.

In this document, a range from "one value to another value" is a shorthand way of referring individually to all the values in the range, which are avoided in the specification. Thus, recitation of a particular numerical range includes any numerical value within that range, as well as the smaller numerical range bounded by any numerical value within that range, as if the any numerical value and the smaller numerical range were written in the specification in the clear.

The invention will be further illustrated with reference to specific examples. It should be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Modifications and adaptations of the invention will occur to those skilled in the art and are intended to be within the scope of the invention in practice. The reagents used in the examples below are all commercially available.

Example 1

(1) Weighing 0.5g of sodium surfactin powder, adding into 10g of glycerin for mixing, slowly adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(2) At normal temperature, 77.5g of deionized water is weighed into a beaker, stirring is kept, 2g of aluminum magnesium silicate is slowly added, and the phase B is obtained after the powder is fully dispersed and is in uniform and stable liquid;

(3) Slowly adding the phase A into the phase B at room temperature, and keeping stirring to ensure that the mixed system is 100g of uniform and stable liquid. And (5) filling, and standing for 10 minutes to form non-flowing solid milk (O/W).

Example 2

(2) At normal temperature, 77.5g of deionized water is weighed into a beaker, stirring is kept, 2g of sodium magnesium lithium silicate is slowly added, and the powder is fully dispersed to form uniform and stable liquid to obtain phase B;

Example 3

(2) Weighing 74.5g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 5g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 4

(1) Weighing 0.1g of sodium surfactin powder, adding into 10g of glycerin for mixing, slowly adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(2) Weighing 74.9g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 5g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 5

(1) 1g of sodium surfactin powder is weighed, added into 10g of glycerin for mixing, 10g of caprylic/capric triglyceride is slowly added, and the mixture is fully stirred to form uniform and stable liquid, so that phase A is obtained;

(2) At normal temperature, weighing 78g of deionized water into a beaker, keeping stirring, slowly adding 1g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 6

(1) Weighing 10g of sodium surfactin powder, adding into 10g of glycerin, mixing, slowly adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(2) At normal temperature, weighing 68g of deionized water into a beaker, keeping stirring, slowly adding 2g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 7

(2) Weighing 69.5g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 10g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 8

(2) At normal temperature, weighing 76.5g of deionized water into a beaker, keeping stirring, slowly adding 3g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 9

(1) Weighing 2g of sodium surfactin powder, adding into 10g of glycerin for mixing, slowly adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(2) Weighing 76g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 2g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Example 10

(2) At normal temperature, 77g of deionized water is weighed into a beaker, stirring is kept, 2g of aluminum magnesium silicate is slowly added, and the powder is fully dispersed to form uniform and stable liquid to obtain a phase B;

Example 11

(1) Weighing 5g of sodium surfactin powder, adding into 10g of glycerin for mixing, slowly adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(2) Weighing 73g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 2g of aluminum magnesium silicate, and obtaining phase B after the powder is fully dispersed and is in uniform and stable liquid;

Comparative example 1

(1) Weighing 0.5g of hydrogenated lecithin powder (phosphatidylcholine is more than or equal to 70%), adding into 10g of glycerin, mixing, adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

(3) Slowly adding the phase A into the phase B at room temperature, and keeping stirring to ensure that the mixed system is 100g of uniform and stable liquid. Standing for 10 min to form non-flowing solid milk (O/W), and packaging.

Comparative example 2

(2) At normal temperature, 77.5g of deionized water is weighed into a beaker, stirring is kept, 2g of xanthan gum is slowly added, and the powder is completely dissolved and is in uniform and stable liquid to obtain phase B;

(3) Slowly adding the phase A into the phase B at room temperature, and keeping stirring to ensure that the mixed system is 100g of uniform and stable liquid. Standing to form non-flowing solid milk (O/W), and packaging.

Comparative example 3

Weighing 0.5g of sodium surfactin powder, adding into 10g of glycerin, mixing, stirring uniformly, slowly adding 10g of caprylic/capric triglyceride, stirring fully, supplementing deionized water to 100g after uniform and stable liquid is formed, stirring, cooling to room temperature after uniform and stable liquid is formed, and filling.

Comparative example 4

And weighing 98g of deionized water into a beaker at normal temperature, keeping stirring, slowly adding 2g of aluminum magnesium silicate, completely dissolving the powder to form uniform and stable liquid, and filling to the room temperature to obtain the product.

Comparative example 5

(1) Weighing 1g of hydrogenated lecithin powder (phosphatidylcholine is more than or equal to 70%), adding into 10g of glycerin, mixing, adding 10g of caprylic/capric triglyceride, and stirring thoroughly to form uniform and stable liquid to obtain phase A;

Table 1 below shows a summary table of the main components and contents of each example, comparative example, in which the total mass of the system was 100g.

TABLE 1

The products of examples 1 to 11 and comparative examples 1 to 5 were subjected to performance evaluation as follows:

1. evaluation of emulsion stability

30g of each of the emulsions prepared in examples 1 to 11 and comparative examples 1 to 5 was placed in a 50ml vial, placed in a 50℃incubator, and left for 3 months, and the emulsion stability was observed at 7d, 14d, 1 month, 2 months, and 3 months, respectively. The results are shown in Table 2.

As can be seen from table 2, the emulsion products of examples 1,2, 3, 4, 7, 8, 9, 10, and 11 were good in long-term stability and did not show delamination within 3 months.

In example 5, the product had a certain initial viscosity, so that the product was relatively stable for two months and had no delamination, but the product viscosity was still relatively low and delamination occurred in the third month because the magnesium aluminum silicate content was relatively low and the sodium surfactin content was relatively high, which also had an effect on the product.

Similarly, in example 6, since the sodium content of the surfactin was relatively high, the viscosity of the product was much lowered, and thus the product was layered after 7 days.

The products of comparative examples 1 to 4, however, were not layered immediately after completion of the preparation, but layered after a period of time, and were poor in long-term stability, which was very disadvantageous for the products. The occurrence of delamination of the emulsion product within a short period of time or shelf life will affect consumer confidence in the quality of the product.

TABLE 2

2. Evaluation of rheological Properties of emulsions

The viscosity of the emulsions prepared in examples 1-11, 1,2, 4, 5 was measured with a DHR-1 type rheometer and recorded as a function of shear rate, and the viscosity values were shown in Table 3, with the first line of data representing shear rate/s in Table 3 ^-1 The 2 nd and subsequent rows represent the viscosity values/pa.s exhibited by the corresponding examples or comparative examples in response to the first row shear rate. The data are summarized in table 3 and plotted in figure 1.

In the evaluation of the rheological properties of the emulsion, comparative example 3 had a viscosity too great to measure, and thus no data were shown.

TABLE 3 Table 3

For emulsion products, systems with too low a viscosity are unstable, are prone to delamination, are too viscous to be ejected, so it is desirable to choose a viscosity in a suitable range, and it is preferable that the initial viscosity is high and the shear viscosity is low. As can be seen from table 3 and fig. 1:

examples 1, 6, 9-11 maintained the magnesium aluminum silicate content unchanged, and the sodium bacitracin content varied:

A. the viscosity of example 1 (containing 0.5% sodium surfactin) was significantly greater than that of comparative example 1 (containing 0.5% hydrogenated lecithin) before the shear force was applied with the same concentration and controlled use of magnesium aluminum silicate. As the shear force increases, the viscosity of example 1 eventually becomes slightly lower than that of comparative example 1, indicating that example 1 is more susceptible to shear thinning by external forces, thus demonstrating that example 1 ejects bulk liquid more readily than comparative example 1. The thixotropic properties of the emulsion after emulsification of sodium surfactin proved to be better than other emulsifiers.

B. Example 6, increasing the sodium content of the surfactin (10%) and keeping the magnesium aluminum silicate content (2%) constant, since the sodium content of the surfactin is relatively too high, which in turn results in a relatively high anion content and a relatively low magnesium aluminum silicate content as a thickener emulsion stabilizer, which results in a decrease in the viscosity of the system and an inadequate stability of the product, it is seen in the results shown in Table 2 that delamination of the product occurs, and the degree of change from the initial viscosity to the final viscosity is not as pronounced as in examples 1 and examples 9 to 11.

C. Example 9, increasing the sodium content of the surfactin (2%) and controlling the magnesium aluminum silicate content to be constant (2%) because the anion content was relatively too high, resulting in a lower viscosity system. The initial viscosity was lower than in example 1, and as shear force increased, the final viscosity of example 1 was slightly lower than that of example 9. Thus, example 9 has less thixotropic properties than example 1.

D. Example 10, with increasing sodium surfactin content (1%) and controlling magnesium aluminum silicate content (2%), the final viscosity was still slightly higher than example 1.

E. Example 11, the sodium content of the surfactin was increased (5%) and the magnesium aluminum silicate content was controlled to be constant (2%) because the anion content was relatively high, resulting in a lower initial viscosity of the system than in example 1. As the shear force increases, eventually, the viscosity of example 11 will decrease and the viscosity spray will be able to be ejected. However, since the viscosity of example 11 was not significantly changed from the initial to the final, the thixotropic properties of example 11 were inferior to those of example 1.

Examples 1, 3, 7, 8 kept the sodium content of the bacitracin unchanged, the magnesium aluminum silicate content varied:

F. example 3, the stability shown in Table 2 remains the same with respect to example 1, with the sodium content of the surfactin being constant (0.5%) and the magnesium aluminum silicate being increased (5%). However, since the magnesium aluminum silicate content was increased, the initial viscosity was also increased as compared with example 1. The viscosity also decreased under external shear, but at the end point, the viscosity was higher than in example 1, and the performance was inferior to that of example 1.

G. Example 7, the stability shown in table 2 remains good with constant sodium content of the bacitracin (0.5%) and increased magnesium aluminum silicate content (10%). However, since the magnesium aluminum silicate content is too high, the initial viscosity also increases greatly. The viscosity also decreased under external shear, but at the end point, the viscosity was higher than in examples 1 and 3, and did not perform as well as 1 and 3.

H. Example 8, the stability shown in table 2 remains good with constant sodium content of the bacitracin (0.5%) and increased magnesium aluminum silicate content (3%). But as the magnesium aluminum silicate content increases, so does the initial viscosity. The viscosity at the end point was higher than that of example 1 but lower than that of examples 3 and 7, and therefore did not perform as well as example 1 but was better than that of examples 3 and 7, although it also resulted in a decrease in viscosity under external shear.

I. Example 2 under the same control of sodium concentration using bacitracin, the viscosity of example 1 (containing 2% magnesium aluminum silicate) was slightly greater than that of example 2 (containing 2% lithium magnesium sodium silicate) before shear force was applied by changing the magnesium aluminum silicate of example 1 to the same concentration of lithium magnesium sodium silicate. When the shear force increases, the viscosity of example 1 is finally lower than that of example 2, and thus example 1 is superior to example 2. The viscosity drop after application of external shear is also very pronounced in example 2 and therefore also meets the product quality requirements.

J. Example 4, which shows a still better stability than example 1, reduced sodium content of bacitracin (0.1%) and increased magnesium aluminum silicate content (5%). But as the magnesium aluminum silicate content increases, so does the initial viscosity. The viscosity was also reduced by external shear, but at the end point, the viscosity was higher than that of examples 1,2, 3, 8, 9, 10, and did not perform as well as 1,2, 3, 8, 9, 10.

K. In example 5, the sodium content of the surfactin (1%) was increased and the magnesium aluminum silicate content (1%) was decreased as compared with example 1, and since the magnesium aluminum silicate content as a thickener and an emulsion stabilizer was relatively low, the initial viscosity of the product was also relatively low and the viscosity at the end was also low, but the degree of change from the initial viscosity to the final viscosity was also inferior to that in example 1.

L the viscosity of example 1 (containing 2% magnesium aluminum silicate) was significantly greater than that of comparative example 2 (containing 2% xanthan gum) before shear force was applied under the same control of sodium surfactin. When the shear force increases, the viscosity of example 1 is significantly lower than that of comparative example 2, and the viscosity of comparative example 2 is also high, so that a large area of bulk liquid cannot be discharged.

In summary, when the silicate content is 1-10%, and the sodium surfactin content is 0.1-10%, the spray emulsion product can be prepared, wherein the silicate content is 2-5%, and the spray emulsion product has better performance when the sodium surfactin content is 0.5-2%, and particularly has the best effect in example 1.

3. Emulsion particle size assessment

The emulsified particles of example 1, example 10 and comparative examples 1 and 5 were observed by using a high-power microscope, and the specific method is as follows: the photomicrographs were obtained from Nikon biological microscope model Ci-S, scale 100 μm. Wherein, fig. 2a is a photomicrograph of example 1, fig. 2b is a photomicrograph of comparative example 1, fig. 2c is a photomicrograph of example 10, and fig. 2d is a photomicrograph of comparative example 5.

It can be seen from fig. 2a, 2b, 2c and 2d that the emulsified particle size is from small to large, fig. 2a < 2c < 2d < 2b, and the distribution and size of fig. 2a are more uniform, and the emulsified particles of fig. 2b and 2d are relatively large and have a partial agglomeration phenomenon. Thus, it is presumed that the particle size of example 1 was small and the stability was optimal, example 10 times, while the particle size of comparative example 1 and comparative example 5 was large and the stability was poor, and that the emulsified particles of comparative example 1 and comparative example 5 were large and less easily absorbed by the skin than those of example 1 and example 10.

Through the verification of the experiments, the conclusion can be drawn that the silicate and the sodium surfactin are compounded, and the prepared spray solid emulsion has better performance in all aspects.

It is readily apparent to those skilled in the art from the teachings of the present invention and the foregoing examples that each of the raw materials and their equivalents, each of the processing methods and their equivalents as exemplified or exemplified herein may be used to practice the present invention, and that the values of the upper and lower limits and the values of the intervals of the parameters of each of the raw materials and the processing methods may be used to practice the present invention, and the examples are not to be construed as limiting.

Claims

1. The spray solid emulsion is characterized by comprising silicate and sodium surfactin, wherein the content of the sodium surfactin is 0.1-5% by weight, and the content of the silicate is 1-10% by weight.

2. The spray solid emulsion of claim 1 wherein said silicate is selected from the group consisting of magnesium silicate salts.

3. The spray solid emulsion of claim 1 wherein said silicate is selected from one or more of magnesium aluminum silicate, sodium magnesium lithium silicate, magnesium lithium silicate.

4. The spray solid emulsion of claim 1 or 2, wherein the sodium bacitracin is present in an amount of 0.1-2% by weight.

5. A spray-on solid emulsion according to claim 1 or 2, characterized in that the silicate content is 2-5% by weight.

6. The spray solid emulsion of claim 1 or 2, wherein the sodium bacitracin is present in an amount of 0.5-2% by weight.

7. The spray solid emulsion of claim 1 or 2, wherein the mass ratio of sodium surfactin to silicate is 1:0.2-50.

8. The spray solid emulsion of claim 1 or 2, wherein the mass ratio of sodium surfactin to silicate is 1:1-10.

9. The spray solid emulsion of claim 1, further comprising a polyol and a grease, wherein the polyol is present in an amount of 1 to 50 weight percent and the grease is present in an amount of 1 to 50 weight percent.

10. The spray solid emulsion of claim 9, further comprising an oil-soluble active ingredient selected from at least one of the active ingredients having whitening, antioxidant, anti-acne, exfoliating, moisturizing, oil control, comfort, and anti-inflammatory effects.

11. A method of preparing a spray solid emulsion comprising the steps of:

(1) Preparing phase A and phase B: mixing sodium surfactin, grease and polyalcohol to obtain phase A; preparing silicate aqueous dispersion liquid to obtain a phase B;

(2) Adding phase A into phase B, mixing to obtain uniform and stable mixture, standing to form non-flowing oil-in-water solid emulsion, and packaging;

wherein, the content of the sodium surfactin is 0.1-5% and the content of the silicate is 1-10% by weight percent.

12. A method of preparing a spray solid emulsion according to claim 11 wherein the silicate is selected from magnesium silicate salts.

13. The method of preparing a spray solid emulsion of claim 11 wherein the silicate is selected from one or more of magnesium aluminum silicate, sodium magnesium silicate, lithium magnesium sodium silicate, and lithium magnesium silicate.

14. The method of preparing a spray solid emulsion according to any one of claims 11 to 13, wherein the sodium bacitracin is present in an amount of 0.1 to 2% by weight.

15. A method of preparing a spray solid emulsion according to any one of claims 11 to 13 wherein the silicate is present in an amount of from 2 to 5% by weight.

16. The method of preparing a spray solid emulsion according to any one of claims 11 to 13, wherein the sodium bacitracin is present in an amount of 0.5 to 2% by weight.

17. The method of preparing a spray solid emulsion according to any one of claims 11 to 13, wherein the mass ratio of sodium surfactin to silicate is 1:0.2-50.

18. The method of preparing a spray solid emulsion according to any one of claims 11 to 13, wherein the mass ratio of sodium surfactin to silicate is 1:1-10.

19. The method of preparing a spray solid emulsion according to any one of claims 11 to 13, wherein the spray solid emulsion further comprises an oil-soluble active ingredient selected from at least one of active ingredients having whitening, antioxidant, anti-acne, exfoliating, moisturizing, oil control, allergy soothing, anti-inflammatory effects, the oil-soluble active ingredient being added in phase a of step (1).