Heat-stable soap-based stabilizer and preparation method thereof

Abstract

The invention relates to the technical field of daily chemicals, in particular to a heat-stable soap-based stabilizer and a preparation method thereof. Comprising the following steps: weighing the following components in parts by weight: 50 parts of lauryl glucoside (Lauryl Glucoside), 25 parts of glyceryl stearate (Glyceral Stearate) and 25 parts of polyglycerol-10 laurate (Polyglyceral-10 Laurate); stirring the polyglycerol-10 laurate at a rotating speed of 60-100 r / min, and introducing water mist until the weight of the polyglycerol-10 laurate is increased to 130-140% of the weight of the polyglycerol-10 laurate, so as to obtain a mixed water emulsion; the hydrophilicity of the polyglycerol-10 laurate is utilized to carry a small amount of water; carrying out hot melting on glyceryl stearate at 55-60 DEG C, adding the mixed water emulsion after hot melting, and uniformly stirring at the rotating speed of 1200 r / min to obtain a mixture; cooling the mixture to 20-25 DEG C, adding lauryl glucoside, and emulsifying to obtain a stabilizer; the product obtained by the invention has a better thermal stability function, and can be recovered to be pasty even after being heated; the obtained product is excellent in color consistency, and macroscopic chromatic aberration is not prone to occurring after coating.

Description

Technical Field

[0001] The present invention relates to the field of daily chemical technology, and in particular to a heat-stable soap base stabilizer and a preparation method thereof. Background Art

[0002] Soap-based facial cleansers (facial washes) have strong degreasing properties and cause relatively large irritation to the skin. Generally, stabilizers need to be added, and such stabilizers are generally called soap base stabilizers. However, the existing stabilizers and the final products have a layering phenomenon, which affects the appearance. In addition, the existing technology stabilizers use raw materials such as PEG-240 / HDI copolymer bis-decyltetradecyl polyether-20 ether, sodium alginate, and beeswax to significantly improve the stability of the product; but this technical solution has defects:

[0003] 1. This stabilizer is irreversible at high temperatures, that is, once it encounters high temperatures during preparation, transportation, or storage, it will solidify (become gel-like) and permanently lose its paste-like characteristics, which is not conducive to flow and coating.

[0004] 2. After emulsification and dispersion, the color consistency of this stabilizer is relatively poor, and the facial cleanser must add pigments with strong covering effects. Summary of the Invention

[0005] In view of the deficiencies of the prior art, one of the purposes of the present invention is to provide a preparation method of a heat-stable soap base stabilizer, the second purpose of the present invention is to provide the above-mentioned heat-stable soap base stabilizer, and the third purpose of the present invention is to provide the use of the heat-stable soap base stabilizer in facial cleansers.

[0006] One of the purposes of the present invention is achieved through the following technical solutions:

[0007] A preparation method of a heat-stable soap base stabilizer, comprising the following steps:

[0008] Step 1, weigh 50 parts of lauryl glucoside, 25 parts of glyceryl stearate, and 25 parts of polyglyceryl-10 laurate by weight;

[0009] Step 2, introduce water mist into polyglyceryl-10 laurate while stirring at a speed of 60-100 r / min until the weight gain reaches 130-140% of the weight of polyglyceryl-10 laurate to obtain a water-mixed emulsion; utilize the hydrophilicity of polyglyceryl-10 laurate to carry a small amount of water;

[0010] Step 3, melt glyceryl stearate at 55-60 °C, add the water-mixed emulsion after melting, and stir evenly at a speed of 1200 r / min to obtain a mixture;

[0011] Step 4: Cool the mixture to 20 - 25°C, add lauryl glucoside, and obtain a stabilizer after emulsification.

[0012] Further, the purity of the lauryl glucoside is ≥50%. Lauryl glucoside with too low purity is a turbid liquid, which is not conducive to improving the color consistency of the product.

[0013] Further, the purity of the polyglyceryl-10 laurate is ≥90%. High-purity polyglyceryl-10 laurate has strong hydrophilicity, which is conducive to absorbing water mist.

[0014] Further, the water mist is normal-temperature water mist generated by ultrasonic waves. As is known, high-temperature water vapor easily causes the hydrolysis of polyglyceryl-10 laurate. Therefore, using mild water mist can avoid large-scale hydrolysis while increasing the water content of polyglyceryl-10 laurate.

[0015] Further, the emulsification speed is 2000 - 5000 r / min, and the emulsification time is 30 - 50 min to ensure uniform emulsification.

[0016] The second object of the present invention is achieved by the following technical solution:

[0017] A heat-stable soap base stabilizer as described above.

[0018] The third object of the present invention is achieved by the following technical solution:

[0019] A facial cleanser comprising the heat-stable soap base stabilizer as described above.

[0020] The beneficial effects of the present invention are as follows: The raw materials used in the present invention are mild and skin-friendly, reducing the irritation of the soap-based facial cleanser; the obtained stabilizer has an enhancing effect on the heat resistance stability of the soap-based facial cleanser; after addition, the product does not delaminate at high temperatures and does not show common phenomena such as coarsening and water separation in soap-based products, increasing the stability of the product. Detailed implementation manners

[0021] The following is a further description in combination with specific implementation manners:

[0022] Material description:

[0023] Lauryl glucoside, purchased from Henan Wokasi Biotechnology Co., Ltd., CAS No.: 110615 - 47 - 9, property: slightly yellow transparent liquid, purity: 50%;

[0024] Glycerol stearate, purchased from Jiangsu Rayn Environmental Protection Technology Co., Ltd., CAS No.: 85666 - 92 - 8, property: white waxy solid, purity: 99%;

[0025] Polyglyceryl-10 laurate, purchased from Wuhan Xinyang Ruihe Chemical Technology Co., Ltd., with CAS No. 34406-66-1, property: viscous, purity: 99%.

[0026] Example 1

[0027] Preparation of heat-stable soap-based stabilizer:

[0028] Step 1: Weigh 50 parts of Lauryl Glucoside, 25 parts of Glyceryl Stearate and 25 parts of Polyglyceryl-10 Laurate by weight;

[0029] Step 2: Put Polyglyceryl-10 Laurate into a magnetic stirring device (for its structure and usage, refer to Chinese Patent: A magnetic stirring device with a defoaming function, Patent No. 201621328228.4. This stirring device is equipped with an ultrasonic nebulizer, which was originally used to spray defoaming agent and is used to spray water mist in the present invention, the same below). While stirring at a speed of 60 r / min, pass water mist through the ultrasonic nebulizer of the magnetic stirring device until the weight gain reaches 130% of the weight of Polyglyceryl-10 Laurate to obtain a water-mixed emulsion;

[0030] Step 3: Melt Glyceryl Stearate at 55 °C. After melting, add the water-mixed emulsion and stir evenly at a speed of 1200 r / min to obtain a mixture;

[0031] Step 4: Cool the mixture to 20 °C, add Lauryl Glucoside, with an emulsification speed of 2000 r / min and an emulsification time of 30 min, and obtain a stabilizer after emulsification.

[0032] Example 2

[0033] Preparation of heat-stable soap-based stabilizer:

[0034] Step 1: Weigh 50 parts of Lauryl Glucoside, 25 parts of Glyceryl Stearate and 25 parts of Polyglyceryl-10 Laurate by weight;

[0035] Step 2: Put Polyglyceryl-10 Laurate into a magnetic stirring device. While stirring at a speed of 100 r / min, pass water mist through the ultrasonic nebulizer of the magnetic stirring device until the weight gain reaches 140% of the weight of Polyglyceryl-10 Laurate to obtain a water-mixed emulsion;

[0036] Step 3: Melt glyceryl stearate at 60°C. After melting, add the water-mixed emulsion and stir evenly at a speed of 1200 r / min to obtain a mixture;

[0037] Step 4: Cool the mixture to 25°C, add lauryl glucoside, and emulsify at a speed of 5000 r / min for 50 min to obtain a stabilizer after emulsification.

[0038] Example 3

[0039] Preparation of heat-stable soap base stabilizer:

[0040] Step 1: Weigh 50 parts of lauryl glucoside, 25 parts of glyceryl stearate, and 25 parts of polyglyceryl-10 laurate by weight;

[0041] Step 2: Put polyglyceryl-10 laurate into a magnetic stirring device and stir at a speed of 80 r / min. Use the ultrasonic atomizer of the magnetic stirring device to introduce water mist until the weight gain reaches 135% of the weight of polyglyceryl-10 laurate to obtain a water-mixed emulsion;

[0042] Step 3: Melt glyceryl stearate at 57°C. After melting, add the water-mixed emulsion and stir evenly at a speed of 1200 r / min to obtain a mixture;

[0043] Step 4: Cool the mixture to 23°C, add lauryl glucoside, and emulsify at a speed of 3000 r / min for 40 min to obtain a stabilizer (named product NB-230) after emulsification.

[0044] Example 4

[0045] Preparation of facial cleanser:

[0046] Formula, see Table 1

[0047] Table 1 Facial cleanser formula

[0048]

[0049] Preparation method:

[0050] 1. Accurately weigh various raw materials in the formula and place them in sterilized clean containers;

[0051] 2. Put phase A into an emulsifying pot and stir (30 r / min) and heat to 85°C to ensure that all raw materials are dissolved well; add phase B to a water pot and heat to 80°C;

[0052] 3. Turn on the vacuum pump switch, evacuate the vacuum in the emulsifying pot to below -0.04 mpa, and adjust the stirring speed to 20 r / min; while maintaining the temperature of Phase A at 85°C, start stirring (20 revolutions per minute) and pump in Phase B; stir at a constant temperature of 85°C to ensure that all soap particles are completely dissolved; then add the well-dispersed Phase C and saponify at a constant temperature (80°C - 85°C) for 40 minutes; stir until completely dissolved.

[0053] 4. After saponification, add Phase D and start stirring with cooling water (20 revolutions per minute) to cool down.

[0054] 5. Add Phase E at 50°C and stir evenly.

[0055] 6. Add Phase F at 45°C and stir evenly.

[0056] 7. Drain the vacuum and filter the product at a temperature below 38°C.

[0057] Comparative Example 1

[0058] Step 2: Place polyglyceryl-10 laurate in a magnetic stirring device and stir at a speed of 80 r / min for 30 min. The remaining steps are the same as in Example 3.

[0059] Comparative Example 2

[0060] Step 2: Place polyglyceryl-10 laurate in a magnetic stirring device and stir at a speed of 80 r / min, and add water equal to 135% of the weight of polyglyceryl-10 laurate (pour in liquid water directly without using water mist or steam). The remaining steps are the same as in Example 3.

[0061] Comparative Example 3

[0062] Replace polyglyceryl-10 laurate with an equal amount of sodium alginate. The remaining steps are the same as in Example 3.

[0063] Heat Resistance Experiment

[0064] 1. Experiment purpose: To verify that the stabilizer obtained by the present invention can maintain a paste state even after heating.

[0065] 2. Experiment method: Heat the stabilizers obtained in Examples 1 - 3 and Comparative Example 3 to 90°C, and then naturally cool them to room temperature, and observe their properties.

[0066] 3. Experiment results are shown in Table 2.

[0067] Table 2 Property Record Table

[0068] Stabilizer type Example 1 Example 2 Example 3 Comparative Example 3 Properties Flowable paste Flowable paste Flowable paste Semi-solid gel

[0069] By comparison, it can be seen that the stabilizer obtained by the present invention has better stability compared to the product containing sodium alginate and can restore the paste characteristics after encountering high temperatures.

[0070] Color difference experiment

[0071] 1. Experimental purpose: To verify that the stabilizers obtained by the present invention have a high degree of consistency.

[0072] 2. Experimental method: 5 g of the stabilizers obtained from Examples 1-3, Comparative Examples 1-2, and Example 1 of the authorized publication No. 115350119B were respectively taken and coated on A4 paper. After being placed for 1 h (the storage environment was indoor, room temperature 25°C, relative humidity 70%), a color difference meter was used to detect the color difference value.

[0073] 3. Experimental results, see Table 3;

[0074] Table 3 Color difference detection record table

[0075] Protein film type Color difference value (ΔE) Example 1 1.1 Example 2 1.1 Example 3 0.9 Comparative Example 1 2.0 Comparative Example 2 1.5 115350119B 3.3

[0076] It is known that the color difference value that can be distinguished by the naked eye is about 1.5 ΔE, and once it exceeds 3.0 ΔE, it can be clearly recognized by the naked eye. The stabilizers obtained by the prior art contain many impurity materials such as beeswax, and their color consistency is poor, and the color difference is very easy to be recognized after coating; while in Comparative Example 1, due to the lack of addition of water during processing, the finished product is close to wax, and the color difference after coating is large; although water was added in Comparative Example 2, practice has proved that the effect of directly pouring water and stirring is slightly worse.

[0077] Facial cleanser layering experiment

[0078] 1. Experimental purpose: To explore the effect of NB-230 on increasing the heat resistance stability of soap-based facial cleanser.

[0079] 2. Experimental method: The semi-finished products of facial cleanser in the blank control group (without adding NB-230) and the experimental group (adding NB-230) were respectively placed at 25°C room temperature and 45°C for 1 month, and the phenomena such as whether the paste was layered, turned into water, or became rough were observed.

[0080] 3. Experimental results, see Table 4.

[0081] Table 4 Layering record table

[0082] Paste state at 25°C normal temperature Paste state at 45°C heat resistance Blank control group White pearlescent paste Water separation and layering, upper layer white, lower layer transparent Experimental group White pearlescent paste White pearlescent paste

[0083] NB-230 has an enhancing effect on the heat resistance stability of soap-based facial cleanser. After adding it, the product does not layer at high temperature, and common phenomena such as becoming rough and separating water in soap-based products will not occur, increasing the stability of the product.

[0084] The above embodiments and descriptions in the specification only illustrate the principle and the best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A preparation method of a heat-stable soap-based stabilizer, characterized in that, It includes the following steps: Step 1: Weigh 50 parts of lauryl glucoside, 25 parts of glyceryl stearate, and 25 parts of polyglyceryl-10 laurate by weight; Step 2: Pass water mist into polyglyceryl-10 laurate while stirring at a speed of 60 - 100 r / min until the weight gain reaches 130 - 140% of the weight of polyglyceryl-10 laurate to obtain a water-mixed emulsion; Step 3: Melt glyceryl stearate at 55 - 60 °C, add the water-mixed emulsion after melting, and stir evenly at a speed of 1200 r / min to obtain a mixture; Step 4: Cool the mixture to 20 - 25 °C, add lauryl glucoside, and obtain a stabilizer after emulsification.

2. The preparation method of the heat-stable soap-based stabilizer according to claim 1, wherein: The purity of the lauryl glucoside is ≥50%.

3. The preparation method of the heat-stable soap-based stabilizer according to claim 1, wherein: The purity of the polyglyceryl-10 laurate is ≥90%.

4. The preparation method of the heat-stable soap-based stabilizer according to claim 1, characterized in that: The water mist is normal-temperature water mist generated by ultrasonic waves.

5. The preparation method of the heat-stable soap-based stabilizer according to claim 1, characterized in that: The emulsification speed is 2000 - 5000 r / min, and the emulsification time is 30 - 50 min.

6. A heat-stable soap base stabilizer as described in claim 1.

7. A facial cleanser, characterized in that, It includes the heat-stable soap base stabilizer as described in claim 6.

Images