A silicone emulsion, a preparation method and application thereof

By reacting silane-modified hydrolyzed protein with amino-terminated polydimethylsiloxane, and combining it with bis-aminopropyl polydimethylsiloxane to form a mesh-like hydrophobic soft film, the problems of easy washing away of hydrolyzed protein and high film hardness in existing hair care products are solved. This achieves the dual effects of color protection and repair, and improves the combing performance and shine of the hair.

CN120815012BActive Publication Date: 2025-12-26HANGZHOU SICAN TECH CO LTD
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Patent Information

Application Number
CN202511316625.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-16
Publication Date
2025-12-26
Estimated Expiration
2045-09-16

AI Technical Summary

Technical Problem

Hydrolyzed wheat protein in existing hair care products is easily washed away, resulting in poor color protection. Traditional film-forming ingredients have high hardness, poor combing effect, and insufficient breathability.

Method used

Silane-modified hydrolyzed protein was reacted with amino-terminated polydimethylsiloxane to form a network of hydrophobic soft film, which improved adhesion and enhanced film stability.

Benefits of technology

It achieves the dual effects of color protection and repair, reducing post-dyeing pigment loss, improving hair texture, enhancing combability and shine, and has good stability, making it suitable for industrial production.

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Abstract

The application relates to the field of silicone emulsions, in particular to a silicone emulsion, a preparation method and application, which comprises silane modified hydrolyzed protein, polydimethylsiloxane, amino-terminated polydimethylsiloxane, bis-amino-propyl polydimethylsiloxane, an emulsifier and water. The silane modified hydrolyzed protein comprises one of hydrolyzed collagen PG-propyl methyl silane diol, hydrolyzed keratin PG-propyl methyl silane diol, hydrolyzed wheat protein PG-propyl silane triol, hydrolyzed sesame protein PG-propyl methyl silane diol and hydrolyzed plant protein PG-propyl silane triol. The prepared silicone emulsion can be efficiently covered on the surface of hair, so that the surface gloss of the hair can be improved and the pigment loss after dyeing can be reduced.
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Description

TECHNICAL FIELD

[0001] The technical scheme mainly relates to the field of silicone emulsion, and particularly relates to a silicone emulsion, a preparation method and application. BACKGROUND

[0002] With the improvement of the living standards of residents, hair perming and dyeing are increasingly popular, and long-term perming and dyeing can cause irreversible damage to hair, dyed hair is prone to discoloration after daily washing, and hair strands lose luster and cannot maintain the effect for a long time, so post-dyeing care products have become a necessary product for the perming and dyeing group.

[0003] The color protection and volume increasing products on the market add hydrolyzed wheat protein and other functional substances to repair damaged hair strands and provide certain color protection functions, but the wheat protein in the products is not easy to stay on the hair during washing and is easily washed away, and the effect is weak. Patent No. CN115670981B discloses a hair care composition with color locking, brightening and softening repair effects and a preparation method thereof, which has certain color locking, brightening and softening effects, but uses candelilla wax, which has good film forming effect but high film hardness, and has poor improvement effect on combing and lacks breathability.

[0004] To solve the problem, the present application provides a silicone emulsion, a preparation method and application, which uses silane modified hydrolyzed protein, can be catalyzed by cationic surfactant to react with active hydrogen of amino-terminated polydimethylsiloxane through silanization, so as to more easily form a film on the hair surface, and is combined with bis-aminopropyl polydimethylsiloxane to strengthen the film forming effect, to form a breathable reticular hydrophobic soft film on the hair surface, so that the hair is more strong and lustrous and is not easy to discolor after long-term washing. It can also improve the hair texture and make it easier to comb. It can make the hair smoother. SUMMARY

[0005] The present application aims to solve the problems of the prior art and provides a silicone emulsion with color protection and brightening effects and application, which solves the core problems of the prior art through component synergistic design. The silane modified hydrolyzed protein can react with amino-terminated polydimethylsiloxane to improve the adhesion of hydrolyzed protein on the hair surface, avoid the problem of easy loss of hydrolyzed protein in the existing products, and continuously play the role of repairing damaged hair strands. At the same time, bis-aminopropyl polydimethylsiloxane is combined with amino-terminated polydimethylsiloxane to form a reticular hydrophobic soft film, which not only avoids the defects of high hardness, poor combing effect and insufficient breathability of traditional film forming components, but also enhances the stability of the film layer through molecular force and ionic bond, reduces the loss of hair pigment after dyeing, and realizes the dual effects of color protection and repair.

[0006] In order to solve the above technical problems, the following technical scheme is adopted: an organic silicon emulsion is provided, which comprises silane modified hydrolyzed protein, polydimethylsiloxane, amino-terminated polydimethylsiloxane, bis-aminopropyl polydimethylsiloxane, emulsifier and water. This is an organic silicon emulsion with silane modified hydrolyzed protein, high and low viscosity compounded dimethyl silicone oil, and amino-modified organic silicon. The organic silicon emulsion is composed of silane modified hydrolyzed protein, polydimethylsiloxane, amino-terminated polydimethylsiloxane, bis-aminopropyl polydimethylsiloxane, emulsifier and water. When applied to hair care products, it can improve the smoothness of the hair, help the dyed hair to fix the color, and form a protective film to prevent external pollutants, ultraviolet rays and other secondary damage to the hair.

[0007] Further, the silane modified hydrolyzed protein includes one of hydrolyzed collagen PG-propyl methyl silane diol, hydrolyzed keratin PG-propyl methyl silane diol, hydrolyzed wheat protein PG-propyl silane triol, hydrolyzed sesame protein PG-propyl methyl silane diol, and hydrolyzed plant protein PG-propyl silane triol.

[0008] Further, the content of the silane modified hydrolyzed protein is 0.2%-0.5%;

[0009] The content of the polydimethylsiloxane is 15%-30%;

[0010] The content of the amino-terminated polydimethylsiloxane is 15%-30%;

[0011] The content of the bis-aminopropyl polydimethylsiloxane is 5%-15%;

[0012] The content of the emulsifier is 2.5%-9%;

[0013] The balance is water.

[0014] Further, the polydimethylsiloxane is a mixture of two polydimethylsiloxanes.

[0015] Further, the viscosities of the two polydimethylsiloxanes are 2mm 2 / s-5mm 2 / s and 500000MPa·s-1500000MPa·s, respectively. 2 / s-5mm 2 / s and 500000MPa·s-1500000MPa·s, respectively.

[0016] Further, the molecular weight of the amino-terminated polydimethylsiloxane is 3000 MPa.s-8000 MPa.s, and the amine value is 0.4-0.6%; the viscosity of the bis-aminopropyl polydimethylsiloxane is 6000 MPa.s-15000 MPa.s, and the amine value is 1-2%.

[0017] Further, the emulsifier is a combination of tridecyl alcohol polyether-12, tridecyl alcohol polyether-5, and cetyltrimethylammonium chloride; the content of tridecyl alcohol polyether-12 is 1-5%, the proportion of tridecyl alcohol polyether-5 is 0.5%-2%, and the proportion of cetyltrimethylammonium chloride is 1%-2%.

[0018] The application also provides a preparation method of the silicone emulsion, which comprises the following steps:

[0019] S1, heating polydimethylsiloxane, amino-terminated polydimethylsiloxane, and bis-aminopropyl polydimethylsiloxane in a stirring device, and stirring until mixed uniformly;

[0020] S2, adding part of water, an emulsifier, and a silane-modified hydrolyzed protein into another stirring device, and stirring until completely uniform;

[0021] S3, starting the dispersion function of the stirring device, adding the mixed silicone oil of S1 into the mixture of S2 at a certain speed, and stirring and shearing for a certain time after the addition is completed;

[0022] S4, closing the dispersion function, adding the remaining water, and stirring until completely uniform, and discharging.

[0023] The scheme of the application can be widely applied in the fields of silicone material manufacturing, emulsion preparation, chemical engineering equipment, daily chemical industry, etc. First, the application provides a new preparation method of silicone emulsion, which can adjust the proportion and type of raw materials according to actual needs, thereby improving the performance and application range of the emulsion. Second, the reaction conditions of the application are relatively mild, which can not only reduce the production cost, but also reduce the safety risk of production. Therefore, the application has a broad application prospect in the future market, especially in industries that need to use a large amount of silicone emulsion, and is expected to become a new preparation method.

[0024] Further, in step S1, the heating temperature is 45-55℃, the stirring time is 0.5-1.5h, and the revolution speed is 80-120rpm;

[0025] In step S2, the added water accounts for 5%-10% of the total water, the revolution speed is 40-60rpm, and the stirring time is 25-35min;

[0026] In step S3, the rotational speed of the dispersion disc is set to 800-1200 rpm, the addition speed of the silicone oil is 0.8% per minute, and the shearing stirring time is 2-3 h;

[0027] In step S4, the stirring time is 1.5-2.5 h.

[0028] The application also provides an application of the silicone emulsion in a hair care product.

[0029] The application has the following advantages:

[0030] 1. The application solves the core problems in the prior art through synergistic design of components. The silane-modified hydrolyzed protein can react with the amine-terminated polydimethylsiloxane to improve the adhesion of the hydrolyzed protein on the hair surface, avoid the problem that the hydrolyzed protein in existing products is easily washed away, and continuously play a role in repairing damaged hair. At the same time, the double-amino-propyl polydimethylsiloxane is matched with the amine-terminated polydimethylsiloxane to form a reticular hydrophobic soft film, which not only avoids the defects of high hardness, poor combing effect and insufficient air permeability of traditional film-forming components, but also enhances the stability of the film layer through molecular force and ionic bond, reduces the loss of hair pigment after dyeing, and realizes the dual effect of color protection and repair.

[0031] 2. The silicone emulsion of the application has excellent stability and can maintain a uniform state under different temperature and humidity environments, repeated freezing and thawing, centrifugation and other tests, effectively ensuring the shelf life of the product. When applied to hair care products, it can significantly improve the combing performance of the hair, reduce the tangling phenomenon after washing, improve the gloss of the hair, and the smooth effect lasts longer. At the same time, it can slow down the fading speed of dyed hair, making the hair color closer to the initial state after dyeing, and is superior to existing similar products on the market in terms of sensory experience and actual hair care effect.

[0032] 3. The preparation process of the application is mild and controllable, without harsh conditions such as high temperature and high pressure. The production process does not generate waste, which not only reduces the safety risk and environmental protection cost in production, but also improves the production efficiency, and is suitable for industrial large-scale production demand. In addition, the formula has high flexibility, and the selection and combination of raw materials can be adjusted according to the actual application scene. It can not only be used for hair conditioner, but also be expanded to hair mask, post-dyeing repair serum and other hair care products, greatly improving the application adaptability and market potential of the product. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The dry combing force reduction of the hair bundle after being treated with different hair conditioners;

[0034] Figure 2 The surface color condition diagram of the hair bundle after being treated with different hair conditioners. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0036] The following specific examples will further illustrate this point:

[0037] Example 1:

[0038] An organosilicon emulsion, the preparation method of which is as follows:

[0039] S1, Use commercially available viscosity 2mm 2 100 kg of polydimethylsiloxane with a viscosity of 500,000 MPa·s, 80 kg of commercially available polydimethylsiloxane with a viscosity of 500,000 MPa·s, 200 kg of commercially available amino-terminated polydimethylsiloxane with an amine value of 0.4%, and 100 kg of commercially available bis-aminopropyl polydimethylsiloxane with an amine value of 0.1% are heated to 50°C in a stirred tank 1 and stirred for 1 hour until the mixture is homogeneous, with a revolution speed of 100 rpm.

[0040] S2. Add 60kg of water, 40kg of commercially available tridecyl alcohol polyether-12, 10kg of commercially available tridecyl alcohol polyether-5, 10kg of commercially available hexadecyltrimethylammonium chloride, and 20kg of commercially available hydrolyzed wheat protein PG-propylsilanetriol to the mixing vessel 2. Stir at 50 rpm for 30 minutes until completely homogeneous.

[0041] S3. Open the dispersion plate of the mixing vessel 2, set the rotation speed to 1000 rpm, and add the product mixed in S1 to the mixing vessel 2 at a rate of 0.8% per minute. After the addition is complete, stir and shear for 2.5 hours.

[0042] S4. Close the dispersion plate of the mixing tank 2, add the remaining water and stir for 2 hours until completely uniform, then discharge to obtain the silicone emulsion.

[0043] Example 2:

[0044] An organosilicon emulsion, the preparation method of which is as follows:

[0045] S1. Use commercially available viscosity 5mm 2 150 kg of polydimethylsiloxane with a viscosity of 1,000,000 MPa·s, 65 kg of commercially available polydimethylsiloxane with a viscosity of 1,000,000 MPa·s, 250 kg of commercially available amino-terminated polydimethylsiloxane with an amine value of 0.5%, and 100 kg of commercially available bis-aminopropyl polydimethylsiloxane with an amine value of 0.1% are heated to 50°C in a stirred tank 1 and stirred for 1 hour until uniformly mixed, with a revolution speed of 100 rpm.

[0046] S2, 60 kg of water, 45 kg of commercially available tridecyl alcohol polyether-12, 12 kg of commercially available tridecyl alcohol polyether-5, 15 kg of commercially available cetyltrimethylammonium chloride and 20 kg of commercially available hydrolyzed vegetable protein PG-propyl silane triol were added to the stirring kettle 2, the rotation speed was 50 rpm, and stirring was performed for 30 min until completely uniform.

[0047] S3, the dispersion disc of the stirring kettle 2 was opened, the rotation speed was set to 1000 rpm, the product mixed in S1 was added to the stirring kettle 2 at a speed of 0.8% per minute, after addition was completed, stirring and shearing were performed for 2.5 h.

[0048] S4, the dispersion disc of the stirring kettle 2 was closed, the remaining water was added and stirred for 2 h until completely uniform, and then discharged to obtain a silicone emulsion.

[0049] Example 3:

[0050] A silicone emulsion, the preparation method thereof is:

[0051] S1, 150 kg of commercially available polydimethylsiloxane with a viscosity of 5 mm 2 / s, 80 kg of commercially available polydimethylsiloxane with a viscosity of 600000 MPa·s, 200 kg of commercially available amine value 0.6% amine-terminated polydimethylsiloxane, and 120 kg of commercially available amine value 0.2% bis-aminopropyl polydimethylsiloxane were heated to 50°C in the stirring kettle 1, and stirred for 1 h until mixed uniformly, and the rotation speed was 100 rpm.

[0052] S2, 60 kg of water, 35 kg of commercially available tridecyl alcohol polyether-12, 15 kg of commercially available tridecyl alcohol polyether-5, 10 kg of commercially available cetyltrimethylammonium chloride and 25 kg of commercially available hydrolyzed collagen PG-propyl silane diol were added to the stirring kettle 2, the rotation speed was 50 rpm, and stirring was performed for 30 min until completely uniform.

[0053] S3, the dispersion disc of the stirring kettle 2 was opened, the rotation speed was set to 1000 rpm, the product mixed in S1 was added to the stirring kettle 2 at a speed of 0.8% per minute, after addition was completed, stirring and shearing were performed for 2.5 h.

[0054] S4, the dispersion disc of the stirring kettle 2 was closed, the remaining water was added and stirred for 2 h until completely uniform, and then discharged to obtain a silicone emulsion.

[0055] Example 4:

[0056] A silicone emulsion, the preparation method thereof is:

[0057] S1, 150 kg of commercially available polydimethylsiloxane with a viscosity of 5 mm 2Dimethicone 200 kg, viscosity 500000 MPa.s, Ammonia-terminated dimethicone 200 kg, amine value 0.4%, Bis-ammoniopropyl dimethicone 100 kg, amine value 0.1% were added into stirring kettle 1, heated to 50℃, stirred for 1 h until mixed evenly, rotation speed 100 rpm.

[0058] S2, 60 kg of water, 50 kg of commercially available tridecyl alcohol polyether-12, 10 kg of commercially available tridecyl alcohol polyether-5, 15 kg of commercially available cetyltrimethylammonium chloride, and 30 kg of commercially available hydrolyzed wheat protein PG-propyl silane triol were added into stirring kettle 2, rotation speed 50 rpm, stirred for 30 min until completely uniform.

[0059] S3, open the dispersion disc of stirring kettle 2, set the rotation speed to 1000 rpm, add the mixed product of S1 into stirring kettle 2 at a speed of 0.8% per minute, after adding, stir and shear for 2.5 h.

[0060] S4, close the dispersion disc of stirring kettle 2, add the remaining water and stir for 2 h until completely uniform, discharge, to obtain a silicone emulsion.

[0061] Example 5:

[0062] A silicone emulsion, the preparation method is:

[0063] S1, commercially available dimethicone with viscosity 5 mm 2 Dimethicone 120 kg, viscosity 800000 MPa.s, Ammonia-terminated dimethicone 200 kg, amine value 0.6%, Bis-ammoniopropyl dimethicone 70 kg, amine value 0.1% were added into stirring kettle 1, heated to 50℃, stirred for 1 h until mixed evenly, rotation speed 100 rpm.

[0064] S2, 60 kg of water, 40 kg of commercially available tridecyl alcohol polyether-12, 18 kg of commercially available tridecyl alcohol polyether-5, 10 kg of commercially available cetyltrimethylammonium chloride, and 20 kg of commercially available hydrolyzed keratin PG-propyl methyl silane diol were added into stirring kettle 2, rotation speed 50 rpm, stirred for 30 min until completely uniform.

[0065] S3, open the dispersion disc of stirring kettle 2, set the rotation speed to 1000 rpm, add the mixed product of S1 into stirring kettle 2 at a speed of 0.8% per minute, after adding, stir and shear for 2.5 h.

[0066] S4, close the dispersion disc of stirring kettle 2, add the remaining water and stir for 2 h until completely uniform, discharge, to obtain a silicone emulsion.

[0067] The silicone emulsion of the present application is prepared by emulsion polymerization method, and the unblocked active hydrogen on the silanized hydrolyzed protein and the amino-terminated polydimethylsiloxane is reacted under the catalysis of cetyltrimethylammonium chloride, and is applied to hair care products, which has certain film forming property, thereby having certain waterproof effect, and at the same time, the hydrolyzed protein can stay on the damaged hair surface for a long time, repair the hair bundle, and the double amino propyl polydimethylsiloxane is added, the structure at both ends of the straight chain can have different film forming modes, so that through the molecular force of the organic silicon structure and the hair surface, plus the ionic bond force of the amino group and the hair surface, a reticular breathable film is formed, which is more stable and can more efficiently cover the hair surface, thereby improving the luster of the hair surface and reducing the shedding of pigments after dyeing. In addition, the emulsion prepared by emulsion polymerization has better stability, high production efficiency, no waste, and is more suitable for mass production.

[0068] The above examples are subjected to stability investigation and application performance evaluation, and the results are as follows:

[0069] 1. Stability investigation results.

[0070] Table 1 is the stability investigation results table.

[0071]

[0072] 2. Application performance evaluation: the performance of hair conditioner is tested, which is divided into laboratory test and real person sensory test.

[0073] Table 2 is the application of silicone emulsion in hair conditioner.

[0074]

[0075] The preparation method of the above hair conditioner is as follows:

[0076] Application 1: add behenyltrimethylammonium chloride, cetearyl alcohol, glycerol, glycerol monostearate and water into the reaction kettle, stir at 80℃ for 60min until completely uniform, cool to 60℃, add example 1, homogenize and stir for 30min, cool to 40℃, add casone, stir for 10min, vacuum degassing and discharge, to prepare application 1.

[0077] Application 2: add behenyltrimethylammonium chloride, cetearyl alcohol, glycerol, glycerol monostearate and water into the reaction kettle, stir at 80℃ for 60min until completely uniform, cool to 60℃, add example 2, homogenize and stir for 30min, cool to 40℃, add casone, stir for 10min, vacuum degassing and discharge, to prepare application 2.

[0078] Application 3: behenyltrimethylammonium chloride, cetostearyl alcohol, glycerin, glyceryl monostearate and water were added into a reaction kettle, stirred at 80°C for 60 min until completely uniform, cooled to 60°C, added Example 3, homogenously stirred for 30 min, cooled to 40°C, added castor oil, stirred for 10 min, vacuum degassing, discharged, to prepare Application 3.

[0079] Application 4: behenyltrimethylammonium chloride, cetostearyl alcohol, glycerin, glyceryl monostearate and water were added into a reaction kettle, stirred at 80°C for 60 min until completely uniform, cooled to 60°C, added Example 4, homogenously stirred for 30 min, cooled to 40°C, added castor oil, stirred for 10 min, vacuum degassing, discharged, to prepare Application 4.

[0080] Application 5: behenyltrimethylammonium chloride, cetostearyl alcohol, glycerin, glyceryl monostearate and water were added into a reaction kettle, stirred at 80°C for 60 min until completely uniform, cooled to 60°C, added Example 5, homogenously stirred for 30 min, cooled to 40°C, added castor oil, stirred for 10 min, vacuum degassing, discharged, to prepare Application 5.

[0081] Control 1: behenyltrimethylammonium chloride, cetostearyl alcohol, glycerin, glyceryl monostearate and water were added into a reaction kettle, stirred at 80°C for 60 min until completely uniform, cooled to 60°C, added commercially available amino silicone oil emulsion 1 and hydrolyzed keratin PG-propyl methyl silane triol, homogenously stirred for 30 min, cooled to 40°C, added castor oil, stirred for 10 min, vacuum degassing, discharged, to prepare Control 1.

[0082] Control 2: behenyltrimethylammonium chloride, cetostearyl alcohol, glycerin, glyceryl monostearate and water were added into a reaction kettle, stirred at 80°C for 60 min until completely uniform, cooled to 60°C, added commercially available amino silicone oil emulsion 2 and hydrolyzed keratin PG-propyl methyl silane triol, homogenously stirred for 30 min, cooled to 40°C, added castor oil, stirred for 10 min, vacuum degassing, discharged, to prepare Control 2.

[0083] Laboratory tests were conducted on the hair conditioners of Applications 1-5, and the test results are as follows:

[0084] (1) Combability test.

[0085] Take 4g of damaged hair strands from a real person, wash 3 times with 10% sodium lauryl ether sulfate, place in a constant temperature and humidity box for 24h, test the combing work with a hair combing tester (Dia-stron), test 10 times, take the average value, get the combing work , then, take 3g of hair conditioner and evenly apply it on the test hair strands, rinse with clean water 3 times, place in a constant temperature and humidity box for 24h, test the combing work, test 10 times, take the average value, get the combing work , calculate the combing work reduction .

[0086] After rinsing with clean water for three times, place in constant temperature and humidity box for 24h, test combing power reduction amount again, repeat the above operation for 5 times, record the combing power reduction amount, the result is shown in the attached table 2 of the specification. Figure 1 .

[0087] (2) Gloss performance test.

[0088] Take healthy hair strands of real people, divide into 2 parts averagely, each part is about 4g, wash one part with 10% lauryl ether sulfate sodium for 3 times, wash the other part with hair conditioner for 3 times, dry both parts with hair dryer, place in constant temperature and humidity box for 24h, measure the gloss before and after washing with gloss meter, measure 10 times, take the average value, the larger the value, the better the gloss performance. The result is shown in table 3.

[0089] Table 3 is the gloss performance test result.

[0090]

[0091] (3) Color protection performance test.

[0092] Take healthy hair strands of real people, divide into 2 parts averagely, each part is about 4g, after dyeing uniformly with commercially available hair dye, wash one part with 10% lauryl ether sulfate sodium for 3 times, wash the other part with hair conditioner for 3 times, dry both parts with hair dryer, place in constant temperature and humidity box for 24h, measure the color difference value ΔE of hair before and after washing with colorimeter, the smaller the difference value, the better the color protection effect. The result is shown in table 4 and the attached table 4 of the specification. Figure 2 .

[0093] Table 4 is the color protection effect test result.

[0094]

[0095] 2. Real person sensory test.

[0096] Select 20 volunteers, divide into 5 groups, do perm hair experiment with the same hair dye, try the above hair conditioner for one week before and after perming (each group corresponds to one embodiment / contrast example), evaluate the smoothness and health degree of hair after perming and dyeing and score. The evaluation result is shown in table 5.

[0097] Table 5 is the volunteer evaluation result table.

[0098]

[0099] From the above result, it can be known that when the silicone emulsion of the application is used for preparing hair conditioner product, the smoothness and moisturizing degree of hair can be effectively maintained and can be kept smooth for a long time, and the color protection and repair function is also provided, and the coloring effect of hair is maintained.

[0100] In summary, the present application has higher flexibility and better reaction conditions compared to the prior art, which makes the present application have greater advantages and better application prospects in the preparation process of silicone emulsion.

[0101] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited thereto. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the basically same technical problem and achieve the basically same technical effect is covered in the protection scope of the present application.

Claims

1. A silicone emulsion characterized in that, It comprises: Silane modified hydrolyzed protein, polydimethylsiloxane, amodimethicone, bis-aminopropyl dimethicone, emulsifier and water; The content of each component is: The content of the silane modified hydrolyzed protein is 0.2%-0.5%; The content of the polydimethylsiloxane is 15%-30%; The content of the amodimethicone is 15%-30%; The content of the bis-aminopropyl dimethicone is 5%-15%; The content of the emulsifier is 2.5%-9%; The rest is water.

2. The silicone emulsion according to claim 1, characterized in that, The silane modified hydrolyzed protein includes one of hydrolyzed collagen PG-propyl methyl silanediol, hydrolyzed keratin PG-propyl methyl silanediol, hydrolyzed wheat protein PG-propyl silanetriol, hydrolyzed sesame protein PG-propyl methyl silanediol and hydrolyzed plant protein PG-propyl silanetriol.

3. The silicone emulsion of claim 1, wherein The polydimethylsiloxane is a mixture of two polydimethylsiloxanes.

4. The silicone emulsion according to claim 3, characterized in that, The two said dimethicone have a viscosity of 2 mm 2 / s-5 mm 2 / s and 500000 MPa.s-1500000 MPa.s; the dimethicone having a viscosity of 2 mm 2 / s-5 mm 2 The dimethicone having a viscosity of 2 mm / s has a content of 10-20% and the dimethicone having a viscosity of 500000 MPa.s-1500000 MPa.s has a content of 5-10%.

5. The silicone emulsion of claim 1, wherein The molecular weight of the amodimethicone is 3000MPa·s-8000MPa·s, and the amine value is 0.4-0.6%; The viscosity of the bis-aminopropyl dimethicone is 6000MPa·s-15000MPa·s, and the amine value is 1-2%.

6. The silicone emulsion of claim 1, wherein The emulsifier is a combination of tridecyl alcohol polyether-12, tridecyl alcohol polyether-5 and cetyltrimethylammonium chloride; The content of the tridecyl alcohol polyether-12 is 1-5%, the proportion of the tridecyl alcohol polyether-5 is 0.5%-2%, and the proportion of the cetyltrimethylammonium chloride is 1%-2%.

7. A process for the preparation of a silicone emulsion as claimed in any one of claims 1 to 6, characterized in that, It comprises the following steps: S1, heating the polydimethylsiloxane, amodimethicone and bis-aminopropyl dimethicone in the first stirring device, and stirring until mixed evenly; S2, adding part of water, emulsifier and silane modified hydrolyzed protein to the second stirring device, and stirring until completely uniform; S3, open the dispersion disc of the second stirring device, add the mixed silicone oil of S1 to the mixture of step S2 at a certain speed, and after adding, stir and shear for a certain time; S4, close the dispersion function, add the remaining water and stir until completely uniform, and discharge.

8. The preparation method of the silicone emulsion according to claim 7, characterized in that: In step S1, the heating temperature is 45-55℃, the stirring time is 0.5-1.5h, and the revolution speed is 80-120rpm; In step S2, the added water accounts for 5%-10% of the total water, the revolution speed is 40-60rpm, and the stirring time is 25-35min; In step S3, the rotation speed of the dispersion disc is set to 800-1200rpm, the addition speed of the silicone oil is 0.8% per minute, and the shear stirring time is 2-3h; In step S4, the stirring time is 1.5-2.5h.

9. The silicone emulsion according to any one of claims 1-6 for preparing a hair care product.

Citation Information

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