CN113398012A

CN113398012A - Ultra-smooth silicone oil composition for hair washing and caring products and application thereof

Info

Publication number: CN113398012A
Application number: CN202110658365.3A
Authority: CN
Inventors: 黄武萍; 凌文志
Original assignee: Guangdong Saiante New Material Co Ltd
Current assignee: Guangdong Saiante New Material Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-17

Abstract

The invention discloses an ultra-smooth silicone oil composition for hair washing and caring products and application thereof, belonging to the field of daily chemical products. The ultra-smooth silicone oil composition for the hair washing and caring products is prepared by compounding dimethiconol with a specific molecular weight and polydimethylsiloxane with a specific viscosity, has more excellent hair nursing and synergistic effects compared with the products which adopt a single dimethiconone compound as a lubricant in the existing products under the condition of the same viscosity, can endow the used hair with continuous soft, smooth and refreshing feeling, and can not generate heavy feeling or greasy feeling, and is suitable for various hair washing and caring products. The invention also discloses an application of the ultra-smooth silicone oil composition in preparing hair washing and caring products.

Description

Ultra-smooth silicone oil composition for hair washing and caring products and application thereof

Technical Field

The invention relates to the field of daily chemical products, in particular to an ultra-smooth silicone oil composition for hair washing and care products and application thereof.

Background

As one of the indispensable raw materials in the hair washing and caring products, the silicone oil can be mixed with the rest components according to the characteristics of different dosage form products, so that the hair can be cleaned, refreshed, smooth and glossy after the product is used. However, the differences in composition, molecular weight and viscosity of the silicone oil or silicone oil composition used in the existing products can cause the effects after use to be quite different: if the components are not matched properly, the viscosity is too high, although the hair can have transient smooth feeling and glossy feeling after use, the lasting effect is not long, and instead, the smooth feeling is changed into greasy and sticky feeling, and the hair collapses, slides and is not comfortable; however, when the viscosity of the silicone oil or the silicone oil composition is insufficient, the fine damage on the hair cannot be repaired and filled, and the product has good refreshing feeling after use, but the hair has extremely strong hydrophobicity, and has a certain degree of frizzy bifurcation, is cool and not smooth.

Therefore, there is still a need in the art to develop a silicone oil or silicone oil composition for use in hair care products, which actually imparts a long lasting smooth feel to the hair after use.

Disclosure of Invention

Based on the defects in the prior art, the invention aims to provide an ultra-smooth silicone oil composition for a hair washing and caring product, wherein the product is prepared by mutually matching high-viscosity polydimethylsiloxane alcohol and low-viscosity polydimethylsiloxane, and the obtained silicone oil composition can be directly used or is matched with other raw materials after being emulsified to prepare the hair washing and caring product which can effectively endow hair with continuous and long-acting smooth and refreshing feeling.

In order to achieve the purpose, the invention adopts the technical scheme that:

an ultra-smooth silicone oil composition for hair washing and caring products comprises the following components in parts by weight: 10-30 parts of high-molecular-weight dimethiconol and 70-90 parts of low-viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst.

After a plurality of research and development experiments, the inventor of the application finds that the compound of the dimethiconol with a specific molecular weight and the dimethicones with a specific viscosity has more excellent hair care and synergistic effects under the condition of the same viscosity compared with the product which adopts a single dimethiconol compound as a lubricant in the existing product, can endow the used hair with continuous soft and smooth feeling and no heavy feeling or greasy feeling, and is suitable for various hair washing and care products.

Meanwhile, the dimethiconol with higher molecular weight is biased to colloid with poorer fluidity, so that the error in the viscosity test process is larger, the difference of the measured values of samples among batches in the production process is overlarge, if the screening is carried out by taking the viscosity as the characteristic in the prior art, the viscosity and the using effect of a final product are hardly considered, and according to the report of the existing literature, the larger the molecular weight of the dimethiconol is, the larger the viscosity is, so that the accuracy is higher by taking the average molecular weight as the screening standard.

In addition, a common dimethyl siloxane compound is generally selected from a silicone oil product as a low-viscosity compound (0.5-5 cst) with high volatility, so that the final product has good refreshing feeling. However, the inventor of the present application finds that the claimed refreshing feeling of the general commercial products has a certain gap with the actual experience effect, the volatility of the polydimethylsiloxane with low viscosity is too fast in actual mass production and use, the obtained refreshing effect is suddenly reduced, and the smoothness of the hair after the products are used is insufficient; after the components with the viscosity of 5-1000 cst are matched with the dimethiconol, the two components are synergistic, so that the phenomenon cannot occur, and the softness of the product after use can be considered.

Preferably, the average molecular weight of the polydimethylsiloxane is 800-28000 g/mol.

Preferably, the weight part of the high molecular weight dimethiconol is 15-20 parts, and the weight part of the low viscosity dimethiconol is 80-85 parts;

more preferably, the viscosity of the ultra-smooth silicone oil composition for the hair washing and care product is 5000-500000 cst.

The silicone oil composition obtained by the preferable proportion has moderate viscosity and stable property, can be regulated and controlled according to the dosage form of an actual product, and has excellent performance of the prepared product.

Preferably, the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 20-60% of polydimethylsiloxane with the viscosity of 5-200 cst and 40-80% of polydimethylsiloxane with the viscosity of 700-1000 cst.

The inventor finds that the volatility of the polydimethylsiloxane is related to the viscosity of the polydimethylsiloxane, if the polydimethylsiloxane is matched, the finally prepared viscosity difference is not large, but if the content of the selected low-viscosity component is too high, the volatility of the product is higher, and although the product can bring certain refreshing performance to the product, the durability and the moisturizing performance are not enough; if the content of the high-viscosity component is too high, the product may give a negative greasy or sticky feeling for a certain time after use. In addition, the difference in volatility can also cause the viscosity of the product to continuously change in the processes of raw material preparation, preparation and storage, so that the difference between the theoretical viscosity and the actual viscosity is huge, and the quality of the product is influenced. Therefore, the polydimethylsiloxane with different viscosities and in a preferred content is required to be used as a component so as to ensure the service performance and the production and storage stability of the product.

More preferably, the ultra-smooth silicone oil composition for hair washing and care products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 20-30% of polydimethylsiloxane with the viscosity of 50-200 cst and 70-80% of polydimethylsiloxane with the viscosity of 800-1000 cst.

More preferably, the ultra-smooth silicone oil composition for hair washing and care products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 30-40% of polydimethylsiloxane with the viscosity of 5-50 cst and 60-70% of polydimethylsiloxane with the viscosity of 700-800 cst.

More preferably, the ultra-smooth silicone oil composition for hair washing and care products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 70-80% of polydimethylsiloxane with the viscosity of 5-50 cst and 20-30% of polydimethylsiloxane with the viscosity of 800-1000 cst.

The invention also aims to provide the application of the ultra-smooth silicone oil composition for the hair washing and caring product in preparing the hair washing and caring product.

Preferably, the hair washing and caring product comprises a hair conditioner, a shampoo, a hair repair cream and a hair nutrient solution.

The ultra-smooth silicone oil composition disclosed by the invention is stable in property, can ensure stable viscosity and smooth function, and can ensure the continuity of efficacy and excellent user experience when being applied to various hair washing and caring products.

The invention has the beneficial effects that the invention provides the ultra-smooth silicone oil composition for the hair washing and caring products, the product adopts the dimethiconol with specific molecular weight and the dimethicones with specific viscosity to carry out compounding, under the condition of the same viscosity, compared with the product adopting single dimethiconone compounds as the lubricating agent in the existing product, the ultra-smooth silicone oil composition has more excellent hair nursing and synergistic effects, can endow the hair with continuous smooth and soft feeling after use, can not generate heavy feeling or greasy feeling, and is suitable for various hair washing and caring products. The invention also provides application of the ultra-smooth silicone oil composition in preparing hair washing and caring products.

Detailed Description

In order to better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific examples and comparative examples, which are intended to be understood in detail, but not intended to limit the invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention. The experimental reagents and instruments designed for the practice of the present invention and the comparative examples are common reagents and instruments unless otherwise specified.

The average molecular weights of the raw materials of dimethiconol and polydimethylsiloxane in the examples/comparative examples of the invention are determined by the molecular weight viscometry described in GB/T28610-; when the viscosity of the polydimethylsiloxane and the final product is not more than 1000cst, the viscosity is measured by a GB/T10247-2008 chapter 2 (capillary method); when the viscosity is more than 1000cst, the viscosity is measured by the GB/T10247-2008 chapter 4 (rotation method) standard method. The test values are average values after determination, and the difference between the values and the actual test values is 1-5%, which is about the value after the rounding.

Examples 1 to 8

Examples of ultra-smooth silicone oil compositions for hair care and wash products according to the present invention, the components of which are shown in Table 1.

TABLE 1

Comparative examples 1 to 7

The comparative examples of the ultra-smooth silicone oil composition for hair care and washing products of the present invention differ from the products of examples 1 to 8 only in the component formulation, as shown in table 2.

TABLE 2

Effect example 1

In order to verify the viscosity stability of the ultra-smooth silicone oil composition of the present invention, the products obtained in examples 1 to 8 and comparative examples 1 to 7 were stored at room temperature (25 ℃) and 45 ℃ for 2 hours, and the viscosity before and after the product storage was measured, and the results are shown in table 3.

TABLE 3

As can be seen from Table 3, the silicone oil compositions obtained in examples 1 to 8 have high viscosity stability, and the viscosity retention rate at room temperature is more than 99%, so that the final prepared hair washing and care product cannot be deteriorated in effect due to loss of volatile components in the preparation and storage processes of the product. Compared with the products of the examples, the product of the comparative example 3 has stronger volatility due to the low viscosity of the polydimethylsiloxane in the components; the product of comparative example 5 had a large change in viscosity from front to back due to too little dimethiconol content in the composition; the product described in comparative example 7, in which the polydimethylsiloxane was replaced by cyclic polydimethylsiloxane, was highly volatile, again resulting in a product viscosity that could not be maintained for a long period of time.

Effect example 2

To verify the smoothness and smoothness enhancing effect of the ultra-smooth silicone oil composition of the present invention on hair, the products obtained in examples 1 to 8 and comparative examples 1 to 7 were used for testing.

The prepared product is used for testing the smoothness and the softness of hair, the test object is batch test hair which is prepared by collecting hair by a normal human body (a non-genetic disease or an individual with a special constitution) for an experiment, the length of the test hair is the same (about 10cm), the hair is healthy, substances such as original impurities, preservatives and the like on the hair are removed by clean water and a common detergent before the test, and the test object is dried for later use.

The test method of the flexibility test comprises the following steps: dividing the pretreated experimental hairs into 15 groups, wherein the mass of each group of hairs is about 50g, and each group of hairs respectively corresponds to the products obtained in examples 1-8 and comparative examples 1-7; the products prepared in each example/comparative example were applied to the hair of the application test at the same addition level (200 μ L), the surface resistance (mainly friction) of the hair of each test group was measured using a MTT175 type tensile tester for the second half hour and 2 hours (relative to the gmf value of the surface of the hair before the test), the number of the measurements was 3, the final value was obtained by comparing the average of the 3 measurements with the resistance before the test, and the resistance reduction rate (compliance improvement rate) was calculated by the following formula: front hair test gmf value-rear hair test gmf value/front hair test gmf value × 100%.

The smoothness test method comprises the following steps: dividing the pretreated experimental hairs into 15 groups, wherein the mass of each group of hairs is about 50g, and each group of hairs respectively corresponds to the products obtained in examples 1-8 and comparative examples 1-7; the products prepared in each example/comparative example were applied to test hairs at the same addition amount (200 μ L), respectively, and the surface roughness value SA of each hair was obtained by laser scanning the cuticle layer of each test group of hairs using a 3D laser scanner (PRINCE355) for a second half hour and 2 hours, and the smoothness improvement rate of each group of hairs was counted by software, and the results are shown in table 5.

TABLE 4

Item	0.5h softness improvement (%)	2h softness improvement (%)
			Example 1	55.16	48.23
Example 2	61.70	54.92
			Example 3	72.44	67.26
Example 4	68.71	63.95
			Example 5	74.62	69.40
Example 6	75.10	66.57
			Example 7	65.92	55.38
Example 8	66.17	59.24
			Comparative example 1	77.80	72.69
Comparative example 2	63.42	54.20
			Comparative example 3	57.73	44.65
Comparative example 4	74.62	70.96
			Comparative example 5	52.83	40.37
Comparative example 6	80.67	75.29
			Comparative example 7	45.61	20.60

TABLE 5

Item	0.5h smoothness improvement (%)	2h smoothness improvement (%)
			Example 1	52.78	61.25
Example 2	59.40	58.27
			Example 3	66.62	65.48
Example 4	65.13	63.90
			Example 5	67.84	67.52
Example 6	68.50	66.36
			Example 7	65.79	60.50
Example 8	67.12	66.08
			Comparative example 1	69.94	68.83
Comparative example 2	63.77	61.50
			Comparative example 3	58.39	40.26
Comparative example 4	69.80	68.33
			Comparative example 5	46.65	34.51
Comparative example 6	69.26	69.17
			Comparative example 7	52.93	40.71

From tables 4 and 5, it can be seen that the hair softening and smoothness improvement degree of the products obtained in examples 1 to 8 is high, and especially when the addition content and average molecular weight of dimethiconol in the components are within the preferable range, the lasting effect of the product is remarkably improved; as can be seen from the comparison of the data in tables 3-5, when the viscosity change rate of the product is high and the content of volatile components is high, the improvement of the product on the hair flexibility and smoothness (especially smoothness) cannot be kept for a long time.

Effect example 3

In order to verify the actual use effect of the ultra-smooth composition, the products obtained in examples 1-8 and comparative examples 1-7 are used for preparing a hair conditioner, and the formula of the hair conditioner is as follows:

component A (deionized water 87.8 parts, hydroxyethyl vitamin 0.5 part, glycerin 1 part, EDTA disodium 0.1 part); component B (cetostearyl alcohol 5 parts, deionized water 2.5 parts); component C (example/comparative product 1 part, dimethicone 1.5 parts); component D (0.1 part of cason);

sequentially putting the components A to D into a pot, and mixing to prepare the hair conditioner; a control sample of a commercially available hair conditioner product (corresponding to a silicone oil-like composition of approximately 330000cst, with a viscosity of approximately 330000cst) was also introduced, and 15 parts of the above example/comparative product and the control sample were used for evaluation of experience in 16 groups of volunteers, respectively.

The number of each group of the volunteers is 5, each volunteer is a group with healthy constitution and hair quality of 20-40 years old, male and female are half-ginseng, and the hair evaluation length is not shorter than 10 cm. The test method comprises the following steps: the application test of the corresponding test group products is respectively carried out on each volunteer, the application amount is the same as that of daily similar products, scores of softness, smoothness and freshness of the hair after the product is used are respectively evaluated after 5 hours (the full score is 5.0, the minimum score is 0.0, and the average value of 5 persons is taken as an evaluation score), whether greasy/greasy feeling appears on the hair after 24 hours is evaluated (if yes, the approximate appearing interval time is indicated, and if not, the evaluation is 'none'), and the test evaluation result is shown in table 6.

TABLE 6

Item	Degree of compliance	Smoothness of the surface	Degree of freshness	Greasy/greasy feeling
					Example 1	4.1	4.0	4.7	Is free of
Example 2	4.2	4.1	4.4	Is free of
					Example 3	4.7	4.8	4.7	Is free of
Example 4	4.5	4.5	4.5	Is free of
					Example 5	4.8	4.8	4.0	Is free of
Example 6	4.7	4.8	3.6	Is free of
					Example 7	4.2	4.3	4.6	Is free of
Example 8	4.7	4.8	3.5	Is free of
					Comparative example 1	4.8	4.9	2.4	12h
Comparative example 2	3.8	3.9	4.3	Is free of
					Comparative example 3	3.3	3.1	4.8	Is free of
Comparative example 4	4.7	4.8	2.8	16h
					Comparative example 5	3.1	3.5	4.0	Is free of
Comparative example 6	4.8	4.7	2	5h
					Comparative example 7	3.8	3.9	4.7	Is free of
Commercial control	2.6	2.2	4.5	Is free of

As can be seen from Table 6, the products obtained in examples 1-8 have excellent use experience after being prepared into hair washing and caring products, and each score reaches more than 3.5 points; the product obtained in example 3 has the highest comprehensive evaluation, and compared with the existing commercial products, the product not only has long-acting hair softening and smoothness improvement degree, but also can keep fresh feeling after use, and does not have greasy/sticky feeling peculiar to the silicone oil composition after use. As can be seen from the comparison of the product of example 3 with the product of comparative example 1, comparative example 4 and comparative example 6, when the viscosity of polydimethylsiloxane or polydimethylsiloxane in the product is too high or the content of nonvolatile components in the component is too high, although the softness and smoothness of the hair can be effectively improved, the product does not have good experience, the refreshing degree is not durable, and the product may have greasy or greasy feeling after being used for many times; as can be seen from the comparison of the other comparative examples with the example products, when the viscosity of the product is too low or the volatility of the components is too high, the long-lasting effect on the improvement of the smoothness or smoothness of the hair cannot be maintained.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The ultra-smooth silicone oil composition for the hair washing and caring products is characterized by comprising the following components in parts by weight: 10-30 parts of high-molecular-weight dimethiconol and 70-90 parts of low-viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst.

2. The ultra-smooth silicone oil composition for hair care and wash products according to claim 1, wherein the average molecular weight of the polydimethylsiloxane is 800 to 28000 g/mol.

3. The ultra-smooth silicone oil composition for hair care and washing products according to claim 1, wherein the parts by weight of the high molecular weight dimethiconol is 15 to 20 parts, and the parts by weight of the low viscosity dimethiconol is 80 to 85 parts.

4. The ultra-smooth silicone oil composition for hair washing and care products according to claim 1, wherein the viscosity of the ultra-smooth silicone oil composition for hair washing and care products is 5000 to 500000 cst.

5. The ultra-smooth silicone oil composition for hair care and washing products according to claim 1, wherein the low viscosity polydimethylsiloxane comprises the following components in percentage by mass: 20-60% of polydimethylsiloxane with the viscosity of 5-200 cst and 40-80% of polydimethylsiloxane with the viscosity of 700-1000 cst.

6. The ultra-smooth silicone oil composition for hair care and washing products according to claim 5, wherein the ultra-smooth silicone oil composition for hair care and washing products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 20-30% of polydimethylsiloxane with the viscosity of 50-200 cst and 70-80% of polydimethylsiloxane with the viscosity of 800-1000 cst.

7. The ultra-smooth silicone oil composition for hair care and washing products according to claim 5, wherein the ultra-smooth silicone oil composition for hair care and washing products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 30-40% of polydimethylsiloxane with the viscosity of 5-50 cst and 60-70% of polydimethylsiloxane with the viscosity of 700-800 cst.

8. The ultra-smooth silicone oil composition for hair care and washing products according to claim 5, wherein the ultra-smooth silicone oil composition for hair care and washing products comprises the following components in parts by weight: 15-20 parts of high molecular weight dimethiconol and 80-85 parts of low viscosity polydimethylsiloxane; the average molecular weight of the dimethiconol is 900000-1100000 g/mol; the viscosity of the polydimethylsiloxane is 5-1000 cst; the low-viscosity polydimethylsiloxane comprises the following components in percentage by mass: 70-80% of polydimethylsiloxane with the viscosity of 5-50 cst and 20-30% of polydimethylsiloxane with the viscosity of 800-1000 cst.

9. Use of the ultra-smooth silicone oil composition for hair care and washing products according to any one of claims 1 to 8 for the preparation of hair care and washing products.

10. Use of the ultra-smooth silicone oil composition for hair care products according to claim 9 for the preparation of hair care products comprising conditioners, shampoos, hair repair lotions and hair tonics.