Pure oil composition with hair color protection effect as well as preparation method and application thereof

Abstract

The invention discloses a pure oil composition with a hair color protection effect and a preparation method and application thereof, the pure oil composition comprises the following components in parts by weight: 5-50 parts of non-volatile liquid grease, 0.1-10 parts of bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate, 0.01-10 parts of an oil phase thickener and 5-90 parts of volatile grease, and does not contain water; the preparation method comprises the following steps: uniformly mixing the non-volatile liquid grease and the oil-phase thickening agent, and heating until the mixture is colorless and transparent; and then adding bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate, uniformly mixing and cooling, finally adding volatile grease, and uniformly mixing to obtain a finished product. The color and hair care shampoo has the characteristics of good color and hair care effect and low cost.

Description

Technical Field

[0001] The invention relates to a pure oil composition, in particular to a pure oil composition with hair color protection effect and a preparation method and application thereof. Background Art

[0002] With the increasing popularity of hairdressing methods such as hair dyeing, perming, and bleaching, consumers' demand for hair care products has also increased greatly, in order to repair hair damage caused by various chemical treatments, which makes the hair look unhealthy while being beautiful; at the same time, existing hair dyeing methods will face the problem of fading after washing, and the length of time the hair color can be maintained is related to its treatment method. How to maintain the stability of the hair color after dyeing is a major problem facing hair dyeing. In response to this problem, more and more color protection products have appeared on the market. Hair care essential oils are favored by consumers due to their excellent instant care effects and convenient use methods. However, the hair care essential oils on the market are mainly silicone-containing oil systems, which are relatively simple, and hair care essential oils cannot maintain the hair color.

[0003] In the prior art, Chinese patent CN112535648A discloses a shampoo with color and hair protection effects and a preparation method thereof, wherein the shampoo comprises anionic surfactants, amphoteric surfactants, film formers, cationic hair conditioners, pH regulators, viscosity regulators, and water. Specific film formers, polyethylene glycol-90M and polyurethane-11, in conjunction with cationic hair conditioners, polyquaternium salts can form a stable protective film on the hair, so that the pigment in the dyed hair is more firmly present on the hair and is not easily washed off, thereby achieving the purpose of color protection. However, since the cationic hair conditioner used in the above scheme is a macromolecule, usually a water-soluble substance, it needs to be used after absorbing water and swelling in water, and cannot be well compatible with a pure oily system, so it is less used in hair oil products.

[0004] In the prior art, Chinese patent CN115300405A discloses a hair composition with color protection effect and its preparation method and application, wherein the hair composition comprises 5-30 parts of taurate surfactant, 1-5 parts of amphoteric surfactant, 0.2-2 parts of film former, 1-5 parts of oil, 0-5 parts of suspending agent, 0-2 parts of thickener, 0-2 parts of appearance improver, 0-0.5 parts of essence, 0-0.5 parts of preservative, and 53-91.8 parts of water. The taurate surfactant relies on its mildness and affinity for hair protein, as well as the flocculant principle between it and cationic polymer to deposit silicone oil and other oils on the hair to form a film, which has the effect of locking color and slowing down fading. However, the above scheme achieves the color protection effect by supplementing the oil film on the surface of the hair, and the cationic polymer used is relatively expensive, resulting in a high product cost.

[0005] As a small molecule cation, bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate has the properties of improving combing smoothness in cleaning products, and has a certain emulsifying function in emulsified products, helping to improve the stability of emulsified products, but is rarely used in oily systems. The prior art also does not disclose the color protection application of bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate in oil systems. Summary of the invention

[0006] The purpose of the present invention is to provide a pure oil composition with hair color protection effect and its preparation method and application. The present invention has the characteristics of good color protection and hair protection effect and low cost.

[0007] The technical solution of the present invention is a pure oil composition with hair color protection effect, comprising the following components in parts by weight: 5-50 parts of non-volatile liquid oil, 0.1-10 parts of bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate, 0.01-10 parts of oil phase thickener and 5-90 parts of volatile oil, and does not contain water.

[0008] In the aforementioned pure oil composition having hair color protection effect, the non-volatile liquid oil is compatible with bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate.

[0009] In the aforementioned pure oil composition with hair color protection effect, the non-volatile liquid oil includes at least one of dicaprylyl carbonate, caprylic / capric triglyceride, isopropyl myristyl alcohol, ethylhexyl palmitate, coconut oil caprylate / caprate, isononyl isononanoate, cetyl ethylhexanoate, and cetearyl isononanoate.

[0010] In the aforementioned pure oil composition with hair color protection effect, the oil phase thickener includes at least one of hydrogenated castor oil / sebacic acid copolymer, castor oil / IPDI copolymer, hydrogenated C6-20-hydrocarbon polymer, and HDI / trimethylol hexyl lactone crosslinked polymer.

[0011] In the aforementioned pure oil composition with hair color protection effect, the oil phase thickener includes at least one of hydrogenated castor oil / sebacic acid copolymer, castor oil / IPDI copolymer, hydrogenated C6-20-hydrocarbon polymer, and HDI / trimethylol hexyl lactone crosslinked polymer.

[0012] In the aforementioned pure oil composition with hair color protection effect, the volatile oil comprises at least one of cyclic silicone oil, straight chain with a carbon chain length of 8-16, and isomeric alkanes.

[0013] In the aforementioned pure oil composition having hair color protection effect, the cyclic silicone oil includes cyclopentasiloxane.

[0014] In the aforementioned pure oil composition with hair color protection effect, the straight chain or isomeric alkane with a carbon chain length of 8-16 includes at least one of isooctane, decane, undecane, C9-12 alkane, C10-11 isoparaffin, C10-12 isoparaffin, isododecane, C10-13 isoparaffin, C11-12 isoparaffin, C11-13 isoparaffin, tridecane, C12-14 isoparaffin, C12-15 isoparaffin, C13-14 alkane, C13-14 isoparaffin, C13-15 alkane, C13-16 isoparaffin, C8-9 isoparaffin, C9-11 isoparaffin and isohexadecane.

[0015] The method for preparing the above-mentioned pure oil composition comprises the following steps:

[0016] A. Evenly mix the non-volatile liquid oil and the oil phase thickener, and heat until they become colorless and transparent to obtain product A;

[0017] B. Add bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate to product A, mix well and cool to obtain product B;

[0018] C. Add volatile oil to product B, mix evenly to obtain the finished product.

[0019] In the above-mentioned method for preparing the pure oil composition, in step A, the heating temperature is 70-90° C.; in step B, the cooling temperature is below 40° C.

[0020] The invention also discloses the application of the pure oil composition in preparing color protection and hair care products.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The invention adopts an amphiphilic small molecule cation: bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate, which can be well integrated with the oily system in an oily system, and has a significant color protection effect, and improves the antistatic property of hair, reduces the degree of frizziness of hair, increases the smoothness and glossiness of hair, strengthens hair and other hair protection effects; and the bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate of the invention has a small amount of use and a low preparation cost on the basis of ensuring the effect.

[0023] Bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate reduces the loss of dyes during washing through the effect of charge. Specifically, the surface of damaged hair is usually negatively charged, while bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate is positively charged. Based on the electrostatic effect, bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate can be better and more tightly adsorbed on the surface of hair, repairing the surface structure of hair and reducing the loss of dyes; in addition, bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate can also enter the cortex layer of hair, strengthen the internal structure of hair, or directly combine with dyes to stabilize dye molecules.

[0024] The non-volatile oil used in the present invention acts as a solvent to dissolve bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate and the oil phase thickener, and brings a smooth effect to the hair;

[0025] The volatile oil used in the present invention brings a refreshing feeling to the hair due to its volatility, so that the pure oil composition not only provides color protection, smoothness and other effects, but also does not bring a sticky feeling, making it more comfortable to use.

[0026] Therefore, the invention has the characteristics of good color and hair protection effect and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Bleached hair picture.

[0028] Figure 2 This is a picture of hair after dyeing.

[0029] Figure 3 These are pictures of hair bundles after treatment with different samples.

[0030] Figure 4 This is an observation picture of a single hair after different treatment samples were treated under a 700x microscope (HIROX digital microscope). DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention.

[0032] A pure oil composition with hair color protection effect comprises the following components in parts by weight: 5-50 parts of non-volatile liquid oil, 0.1-10 parts of bis-(isostearoyl / oleyl isopropyl) dimethyl ammonium methyl sulfate, 0.01-10 parts of oil phase thickener and 5-90 parts of volatile oil, and does not contain water.

[0033] The non-volatile liquid oil is a non-volatile liquid oil compatible with bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate.

[0034] The non-volatile liquid oil includes at least one of dicaprylyl carbonate, caprylic / capric triglyceride, isopropyl myristyl alcohol, ethylhexyl palmitate, coconut oil alcohol-caprylate / caprate, isononyl isononanoate, cetyl ethylhexanoate, and cetearyl isononanoate.

[0035] The oil phase thickener includes at least one of hydrogenated castor oil / sebacic acid copolymer, castor oil / IPDI copolymer, hydrogenated C6-20 hydrocarbon polymer, and HDI / trimethylol hexyl lactone cross-linked polymer.

[0036] The volatile oil comprises at least one of cyclic silicone oil, straight chain with a carbon chain length of 8-16, and isomeric alkanes.

[0037] The cyclic silicone oil includes cyclopentasiloxane.

[0038] The straight chain or isomeric alkane with a carbon chain length of 8 to 16 includes at least one of isooctane, decane, undecane, C9-12 alkane, C10-11 isoparaffin, C10-12 isoparaffin, isododecane, C10-13 isoparaffin, C11-12 isoparaffin, C11-13 isoparaffin, tridecane, C12-14 isoparaffin, C12-15 isoparaffin, C13-14 alkane, C13-14 isoparaffin, C13-15 alkane, C13-16 isoparaffin, C8-9 isoparaffin, C9-11 isoparaffin, and isohexadecane.

[0039] The method for preparing the above-mentioned pure oil composition comprises the following steps:

[0040] A. Evenly mix the non-volatile liquid oil and the oil phase thickener, heat to 70-90°C to make it colorless and transparent, and obtain product A;

[0041] B. Add bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate to product A, mix well and cool to below 40° C. to obtain product B;

[0042] C. Add volatile oil to product B, mix evenly to obtain the finished product.

[0043] The pure oil composition has the functions of protecting color and hair, repairing damaged hair, and improving the strength and glossiness of hair, and can be used in the preparation of color-protecting and hair-care products.

[0044] Example 1: A pure oil composition having a hair color protection effect, comprising the following ingredients in percentage by weight: 35% dicaprylyl carbonate, 5% bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate, 2.5% hydrogenated castor oil / sebacic acid copolymer and 57.5% C9-12 alkane.

[0045] The preparation method of the pure oil composition is:

[0046] Dicaprylyl carbonate and hydrogenated castor oil / sebacic acid copolymer are mixed evenly, and heated to a colorless and transparent state at 80°C; then bis-(isostearyl / oleyl isopropyl) dimethyl ammonium methyl sulfate is added, stirred evenly and cooled to below 40°C; finally C9-12 alkane is added, and mixed evenly to obtain a pure oil composition.

[0047] Example 2, Comparative Example 1, Comparative Example 2 and Comparative Example 3 were prepared according to the same preparation method as above. The specific component formulas of Example 1, Example 2, Comparative Example 1, Comparative Example 2 and Comparative Example 3 are shown in Table 1, where the percentages are weight percentages.

[0048] Table 1. Formula table of embodiments and comparative examples

[0049]

[0050] Color protection efficacy evaluation test:

[0051] Experimental methods:

[0052] Select bleached hair strands from the same batch (e.g. Figure 1 As shown, the left picture is a bleached hair bundle, and the right picture is a single bleached hair strand observed under a 700x microscope). The same hair dye is used to dye the hair to the same color (such as Figure 2 As shown, the left picture is a picture of a dyed hair bundle, and the right picture is an observation picture of a single dyed hair under a 700x microscope), and a spectrophotometer (model: Konica Minolta CM-26d) is used to test the lab value of the dyed hair bundle. The dyed hair bundles are randomly divided into 4 groups, of which three groups of dyed hair bundles are treated with the same amount (0.2g per hair bundle) of samples of Example 1, Comparative Example 1, and Comparative Example 2, and the last group of dyed hair bundles are not treated with any product, which is a blank control group; then the 4 groups of dyed hair bundles after treatment are respectively immersed in an SDS (sodium dodecyl sulfate) aqueous solution with a mass content of 3% for 8 minutes, and then rinsed with clean water 3 times to simulate multiple washing operations, and the lab value of the hair bundles is measured again after drying, and the hair bundle color change value ΔE is calculated, and the color changes of the hair bundles and hair are photographed and recorded during the whole process.

[0053] Experimental results:

[0054] 1) Image comparison: The state of hair after different sample treatments is as follows Figure 3 and Figure 4 As shown. Figure 3 For the hair bundle diagram, Figure 4 This is a picture of a single hair under a 700x microscope. Figure 3 and Figure 4From left to right in the figure are blank control group, comparative example 1 group, embodiment 1 group and comparative example 2 group.

[0055] from Figure 3 and Figure 4 It can be seen from the color changes that, compared with the blank control group, comparative example 1 group and comparative example 2 group, the hair of the embodiment 1 group has a darker color after being simultaneously cleaned with ultrasound and a surfactant, is closer to the initial dyeing color, and maintains the color better after dyeing, while the other three groups fade to varying degrees. Therefore, the composition of the present invention has a better color protection effect.

[0056] 2) Data comparison: The lab values ​​and color change values ​​of different samples during the treatment process are shown in Table 2.

[0057] Table 2. Lab values ​​and color change values ​​of different sample groups

[0058]

[0059]

[0060] The calculation method of ΔE is as follows:

[0061]

[0062] The significant difference test (two-tailed T-test) is shown in Table 3.

[0063] Table 3. Significant difference test table

[0064] ΔE significant difference test Blank control group Comparative Example 1 Example 1 Group Comparative Example 2 Blank control group / / *** * Comparative Example 1 0.2038 / ** / Example 1 Group 0.0000 0.001585 / * Comparative Example 2 0.0110 0.235261 0.011989 /

[0065] Note: *Significant, p<0.05 (95%), **Significant, p<0.01 (99%), ***Significant, p<0.001 (99.9%)

[0066] It can be seen from Table 2 and Table 3 that compared with the blank control group, the ΔE of the hair bundles treated by the samples of Example 1 and Comparative Example 2 is significantly smaller, indicating that the compositions of Example 1 and Comparative Example 2 have better color protection effects under the test conditions; comparing Example 1 with Comparative Example 2, the ΔE of the hair bundles treated by Example 1 is smaller, and the difference is significant, indicating that the color protection effect of the composition of Example 1 is significantly higher than that of the composition of Comparative Example 2.

[0067] In summary, the composition of the present invention has better color protection effect than the existing low-viscosity silicone oil composition and silicone oil-silicone resin composition, the effect difference is significant, and the dosage is less and the cost is lower.

[0068] Hair care efficacy evaluation test:

[0069] Experimental methods:

[0070] A number of damaged hair bundles purchased from the same batch were selected, cleaned with a 3% by mass SDS (sodium dodecyl sulfate) aqueous solution, and naturally dried at room temperature. The friction work of the hair in its initial state was tested. Nine hair bundles with similar initial states were randomly divided into three groups, and treated with 0.2 g of the samples of Example 1, Example 2, and Comparative Example 3, respectively. After naturally drying at room temperature, the friction work of the hair after treatment was tested.

[0071] Experimental results: The friction work and change values ​​of different samples during the treatment process are shown in Table 4.

[0072] Table 4. Friction work and rate of change of different sample groups

[0073]

[0074] The test for significant difference among the groups (two-tailed T-test) is shown in Table 5.

[0075] Table 5. Test for significant differences between groups

[0076]

[0077] Note: *Significant, p<0.05 (95%), **Significant, p<0.01 (99%), ***Significant, p<0.001 (99.9%).

[0078] It can be seen from Table 4 and Table 5 that compared with before using the sample, Example 1, Example 2 and Comparative Example 3 can all significantly reduce the friction work of the hair; compared with Comparative Example 3, the friction work reduction percentages of Example 1 and Example 2 are higher and significant, indicating that the friction reducing effects of the compositions of Example 1 and Example 2 are significantly higher than those of Comparative Example 3.

[0079] In summary, the composition of the present invention can significantly reduce the friction work of damaged hair compared to the composition before use and the composition without adding cationic agent, thereby providing better hair care effect.

[0080] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A pure oil composition having a hair color protection effect, characterized in that: The invention comprises the following components in parts by weight: 5-50 parts of non-volatile liquid oil, 0.1-10 parts of bis-(isostearoyl / oleyl isopropyl) dimethyl ammonium methyl sulfate, 0.01-10 parts of oil phase thickener and 5-90 parts of volatile oil, and does not contain water.

2. A pure oil composition having hair color protection effect according to claim 1, characterized in that: The non-volatile liquid oil is compatible with bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methosulfate.

3. A pure oil composition having hair color protection effect according to claim 2, characterized in that: The non-volatile liquid oil includes at least one of dicaprylyl carbonate, caprylic / capric triglyceride, isopropyl myristyl alcohol, ethylhexyl palmitate, coconut oil alcohol-caprylate / caprate, isononyl isononanoate, cetyl ethylhexanoate, and cetearyl isononanoate.

4. A pure oil composition having hair color protection effect according to claim 1, characterized in that: The oil phase thickener includes at least one of hydrogenated castor oil / sebacic acid copolymer, castor oil / IPDI copolymer, hydrogenated C6-20 hydrocarbon polymer, and HDI / trimethylol hexyl lactone cross-linked polymer.

5. A pure oil composition having hair color protection effect according to claim 1, characterized in that: The volatile oil comprises at least one of cyclic silicone oil, straight chain with a carbon chain length of 8-16, and isomeric alkanes.

6. A pure oil composition having hair color protection effect according to claim 5, characterized in that: The cyclic silicone oil includes cyclopentasiloxane.

7. A pure oil composition having hair color protection effect according to claim 5, characterized in that: The straight chain or isomeric alkane with a carbon chain length of 8 to 16 includes at least one of isooctane, decane, undecane, C9-12 alkane, C10-11 isoparaffin, C10-12 isoparaffin, isododecane, C10-13 isoparaffin, C11-12 isoparaffin, C11-13 isoparaffin, tridecane, C12-14 isoparaffin, C12-15 isoparaffin, C13-14 alkane, C13-14 isoparaffin, C13-15 alkane, C13-16 isoparaffin, C8-9 isoparaffin, C9-11 isoparaffin, and isohexadecane.

8. The method for preparing the pure oil composition according to claims 1 to 7, characterized in that: The following steps are involved: A. Evenly mix the non-volatile liquid oil and the oil phase thickener, and heat until they become colorless and transparent to obtain product A; B. Add bis-(isostearoyl / oleoyl isopropyl) dimethyl ammonium methyl sulfate to product A, mix well and cool to obtain product B; C. Add volatile oil to product B, mix evenly to obtain the finished product.

9. The method for preparing a pure oil composition according to claim 8, characterized in that: In step A, the heating temperature is 70-90° C.; in step B, the cooling temperature is below 40° C.

10. Use of the pure oil composition according to claims 1 to 7 in the preparation of color protection and hair care products.

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