A silicone elastomer, a method for producing the same, a cosmetic product, and a use thereof

Abstract

The application belongs to the field of new materials, and discloses a kind of organic silicon elastomer, which is prepared from branched hydrogen-containing silicone oil and crosslinking agent containing olefin bond function;The branched hydrogen-containing silicone oil is prepared from hydrogen-containing silicone oil and single-end vinyl silicone oil.The organic silicon elastomer is polymerized by using branched hydrogen-containing silicone oil and crosslinking agent containing olefin bond function, and the single-end vinyl silicone oil first occupies part of the Si-H bond of the hydrogen-containing silicone oil, the crosslinking agent occupies the remaining Si-H bond of the hydrogen-containing silicone oil, and a small amount of crosslinking is combined through the side chain winding in the elastomer, which improves the light transmittance and viscosity of the gel containing the elastomer.The application also provides a preparation method of the elastomer, daily chemical products containing the elastomer and the use of the elastomer.

Description

Technical Field

[0001] This invention belongs to the field of new materials, specifically relating to an organosilicon elastomer, its preparation method, daily chemical products, and applications. Background Technology

[0002] Silicone elastomer gels, as a skin-feel modifier, are widely used in personal care products. With consumers' increasing pursuit of "pure beauty" and environmental friendliness, the market and cosmetic companies hope that silicone elastomer gels can achieve higher transparency while maintaining their original thickening and skin-feel modification properties. Currently, achieving high transparency in silicone elastomer gels with low cross-linking density is relatively simple; however, such products suffer from poor thickening properties due to low cross-linking density, resulting in a poor user experience and failing to meet consumer demands. To obtain better thickening and skin feel, transparency must sometimes be sacrificed.

[0003] Therefore, the problem solved by this invention is to increase the viscosity of silicone elastomer gel while ensuring good light transmittance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an organosilicon elastomer. This organosilicon elastomer is polymerized using a branched hydrogen-containing silicone oil and a crosslinking agent containing olefin functional groups. The single-end vinyl silicone oil first occupies part of the Si-H bonds of the hydrogen-containing silicone oil, and the crosslinking agent occupies the remaining Si-H bonds of the hydrogen-containing silicone oil. The viscosity is improved by the side chain entanglement in the elastomer. Under the condition of low crosslinking degree, the light transmittance and viscosity of the elastomer gel are improved.

[0005] The present invention also provides a method for preparing the elastomer, a daily chemical product containing the elastomer, and the uses of the elastomer.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An organosilicon elastomer is prepared by a branched hydrogen-containing silicone oil and a crosslinking agent containing olefin functional groups; the chemical formula of the branched hydrogen-containing silicone oil is shown in Formula 3 below.

[0008]

[0009] m=1.6~167.7; x=4.4~51.7;

[0010] a=7.5~37.2; b=2.2~15.4; a: b=0.91~11.27.

[0011] Preferably, the branched hydrogen-containing silicone oil is prepared from hydrogen-containing silicone oil and single-ended vinyl silicone oil; the hydrogen content of the hydrogen-containing silicone oil is 0.1wt% to 1.2wt%; and the hydrogen content of the branched hydrogen-containing silicone oil is 0.03wt% to 0.3wt%.

[0012] The single-ended vinyl silicone oil of this invention creates numerous suspended segments. After grinding and pulverizing the three-dimensional network structure of the elastomer, even more siloxane segments are suspended on the particle surface. Due to the properties of silicon-oxygen bonds, these suspended segments freely rotate, extend, and interact with each other, forming a certain degree of physical entanglement. This structure enhances the interaction forces between particles, and the degree of entanglement also helps the network structure accommodate more solvent molecules, thereby improving the swelling performance of the particles and improving thickening viscosity. Therefore, a high degree of chemical crosslinking is not required to achieve the thickening capacity required for the formulation; that is, the resulting gel composition can achieve better thickening effect while maintaining high transparency.

[0013] In specific implementations, when x ranges from 4.4 to 51.7, the molecular weight of the single-ended vinyl silicone oil is between 500 and 4000. The molecular weight of the single-ended vinyl silicone oil determines the degree of physical entanglement. The smaller the molecular weight, the shorter the chain length, resulting in slightly poorer entanglement stability and a corresponding decrease in viscosity. When the molecular weight exceeds 4000, it significantly affects the molecular weight of the branched silicone oil formed after reacting with hydrogen-containing silicone oil: a large grafting amount results in a low hydrogen content and a large molecular weight in the branched silicone oil; a small grafting amount has an insignificant effect and is difficult to control in practice. Simultaneously, an excessively large molecular weight of the single-ended vinyl silicone oil can also create steric hindrance, leading to incomplete crosslinking reactions. A single-ended vinyl silicone oil with a suitable molecular weight can construct a more stable physically entangled structure.

[0014] In this invention, by limiting the values ​​of a and b, sufficient cross-linking and sufficient hanging sites are ensured. If the sum of a and b is too low, the degree of cross-linking is too low and / or there is too little hanging, resulting in too low viscosity. If the sum of a and b is too high, the degree of cross-linking is too high and / or there is too much hanging, resulting in too low viscosity and possibly worse light transmittance.

[0015] In this invention, the ratio (a:b) of the silicon-hydrogen bonds occupied by the single-ended vinyl silicone oil and the crosslinking agent is approximately 1 to 11:1; by forming suspended chain segments with a large amount of single-ended vinyl silicone oil, physical entanglement is formed, improving viscosity, thereby achieving the purpose of this invention with a lower degree of crosslinking.

[0016] In the above-mentioned organosilicon elastomers, the crosslinking agent of the present invention has the following general structural formula:

[0017] R1-X-R2; R1 and R2 both have olefinic bonds; X is an alkyl group, polyoxyalkylene group, polysilyl group, etc.

[0018] The crosslinking agent is preferably a dual-terminated vinyl silicone oil; the molecular weight of the dual-terminated vinyl silicone oil does not exceed 4000, and its molecular weight is preferably 100-4000, more preferably 500-4000, and even more preferably 500-2000. In this invention, the larger the molecular weight of the crosslinking agent, the higher the proportion of crosslinking agent in the obtained elastomer, and the lower the amount of hydrogen-containing silicone oil, resulting in a decrease in viscosity.

[0019] In a preferred embodiment of the present invention, the crosslinking agent is not limited to dual-terminated vinyl silicone oil; crosslinking agents with other polyene functional groups are also applicable, such as 1,5-hexadiene, 1,6-heptadiene, etc.

[0020] In the above-mentioned organosilicon elastomer, the molar ratio of the silane-hydrogen bonds of the branched hydrogen-containing silicone oil to the olefin bonds of the crosslinking agent is 0.8 to 1.2:1.

[0021] In this invention, the molar ratio of the silane-hydrogen bonds in the branched hydrogen-containing silicone oil to the olefin bonds in the crosslinking agent is 1, so the remaining silane-hydrogen bonds in the branched hydrogen-containing silicone oil preferably react completely with the crosslinking agent.

[0022] When the molar ratio of the silane-hydrogen bonds in the branched hydrogen-containing silicone oil to the crosslinking agent is >1, the crosslinking agent does not react completely, and its impact on performance is not significant; when the molar ratio of the silane-hydrogen bonds in the branched hydrogen-containing silicone oil to the crosslinking agent is <1, the silane-hydrogen bonds do not react completely. As long as 0.03wt% to 0.3wt% of the silane-hydrogen bonds react with the crosslinking agent, the purpose of this invention can be achieved.

[0023] In the above-mentioned organosilicon elastomers, the molecular weight of the hydrogen-containing silicone oil is 1049 to 14780; the molecular weight of the branched hydrogen-containing silicone oil is 3170 to 35041.

[0024] In the above-mentioned organosilicon elastomers, the structural formula of the hydrogen-containing silicone oil is shown in Formula 1 below;

[0025] Formula 1:

[0026] n=11~40.5; m=1.6~167.7; a+b=n;

[0027] The structural formula of the single-ended vinyl silicone oil is shown in Formula 2 below;

[0028] Formula 2:

[0029] x = 4.4 to 51.7.

[0030] Meanwhile, this invention also discloses a method for preparing the organosilicon elastomer as described above, wherein branched hydrogen-containing silicone oil and a crosslinking agent are dispersed in a solvent, and the reaction is carried out in the presence of a catalyst. Preferably, the solvent is polydimethylsiloxane, and the viscosity of the polydimethylsiloxane is 1.5–20 cSt;

[0031] In the above-described method for preparing organosilicon elastomers, the reaction time is 6–10 hours, the reaction temperature is 70–90°C, and the catalyst is a platinum catalyst. Preferably, the platinum catalyst is an isopropanol solution of chloroplatinic acid or a vinylplatinum complex; the amount of platinum catalyst used is such that the concentration of metallic platinum in the system reaches 1.5–10 ppm.

[0032] In some embodiments of the present invention, the amount of platinum catalyst used is such that the concentration of metallic platinum in the system reaches 2ppm, 3ppm, 4ppm, 5ppm, 6ppm, 7ppm, 8ppm, 9ppm or 10ppm.

[0033] After the elastomer is prepared as described above, it needs to be used in combination with a solvent to form a gel. Specifically, the silicone elastomer product is sheared and pulverized, then diluted and swollen with the solvent polydimethylsiloxane, and finally the gel is obtained by centrifugation or vacuum degassing. The viscosity of the polydimethylsiloxane used in the preparation of the silicone elastomer gel is 1.5–20 cSt.

[0034] The preparation methods for both hydrogen-containing silicone oil and double-ended vinyl silicone oil are as follows: the required reactants are mixed with an acidic catalyst and reacted at 40-50°C for 6-10 hours, and then the acidic catalyst is neutralized to obtain the corresponding hydrogen-containing silicone oil or double-ended vinyl silicone oil.

[0035] In this invention, the acidic catalyst may be selected from phosphoric acid, concentrated sulfuric acid, trifluoromethanesulfonic acid, acidic clay, acidic resin, etc., with concentrated sulfuric acid having a concentration of 98 wt% being preferred.

[0036] The preparation method of branched hydrogen-containing silicone oil is as follows: mix single-end vinyl silicone oil with hydrogen-containing silicone oil, heat to 50-70℃, then add platinum catalyst, and react for 1-2 hours.

[0037] Furthermore, this invention also discloses the use of any of the organosilicon elastomers described above for preparing skin feel modifiers or thickeners in daily chemical products.

[0038] Finally, the present invention also discloses a daily chemical product containing any of the organosilicon elastomers described above.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] This invention employs branched-chain hydrogen-containing silicone oil and a crosslinking agent containing olefin functional groups for polymerization. The resulting organosilicon elastomer is polymerized using this method. The single-end vinyl silicone oil initially occupies some of the Si-H bonds in the hydrogen-containing silicone oil, while the crosslinking agent occupies the remaining Si-H bonds. The viscosity is improved through side-chain entanglement within the elastomer. Even with a low degree of crosslinking, the addition of a small amount of crosslinking enhances the light transmittance and viscosity of the gel containing this elastomer. Detailed Implementation

[0041] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0042] Part 1: Preparation of Hydrogen-Containing Silicone Oil

[0043] Octamethylcyclotetrasiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, hexamethyldisiloxane, and 4.9 g of concentrated sulfuric acid catalyst were mixed evenly and reacted at 45 °C for 8 hours. Then, 10.6 g of sodium carbonate was added to neutralize and the mixture was stirred for 2 hours. The mixture was then filtered under reduced pressure through a Buchner funnel to obtain a colorless and transparent liquid. The liquid was then subjected to reduced pressure distillation at 150–170 °C and -0.095 kPa for 6 hours to remove low-boiling substances, yielding hydrogen-containing silicone oil.

[0044] The chemical formula of the obtained hydrogen-containing silicone oil is:

[0045]

[0046] Table 1 below lists the required amounts of raw materials and the specifications of the hydrogen-containing silicone oil for synthesis using the above method.

[0047] Table 1. Formula and Product Specifications

[0048]

[0049] Methods for detecting hydrogen content in hydrogen-containing silicone oil:

[0050] 1. Accurately weigh 0.1g of the hydrogen-containing silicone oil sample to be tested into a 250mL iodine flask;

[0051] 2. Dissolve the sample in 50 mL of n-hexane in an iodine flask. Then, pipette 10 mL of iodine monochloride-glacial acetic acid into the iodine flask, mix well, and finally seal with deionized water. Incubate in the dark at 25°C for 1 hour.

[0052] 3. Add 50 mL of 10% potassium iodide solution to the iodine flask, then rinse the mouth of the flask with deionized water. Next, titrate with 0.1 mol / L sodium thiosulfate standard solution. When the solution turns pale yellow, add 1 mL of starch indicator and continue titrating until the blue color just disappears, which is the endpoint.

[0053] 4. Using the same method as above, conduct a blank experiment as a control.

[0054] 5. Finally, the hydrogen content is calculated using the following formula:

[0055]

[0056] In the formula:

[0057] c — Concentration of sodium thiosulfate standard solution, in mol / L;

[0058] V0—The volume of sodium thiosulfate standard solution consumed in the blank experiment titration to the endpoint, in mL;

[0059] V1—The volume of sodium thiosulfate standard solution consumed in titrating the sample to the endpoint, in mL;

[0060] m — the actual mass of the sample to be tested, in grams.

[0061] Part Two: Preparation of Branched Hydrogen-Containing Silicone Oil

[0062] Hydrogen-containing silicone oil 1 and monovinyl-terminated silicone oil 1 (viscosity 20 mPa·s, number-average molecular weight 1824, vinyl content 1.6%, x=22) were mixed evenly and heated to 60℃ with stirring. Then, a vinyl platinum complex was added to make the concentration of metallic platinum in the system 2.0 ppm. The reaction was carried out for 2 hours to obtain branched hydrogen-containing silicone oil.

[0063] The chemical formula of the obtained branched hydrogen-containing silicone oil is:

[0064]

[0065] Tables 2, 3, and 4 below record the required amounts of raw materials and the specifications of the branched hydrogen-containing silicone oils synthesized by the above method.

[0066] Table 2 Formula and Product Specifications

[0067]

[0068] Table 3 Formula and Product Specifications

[0069]

[0070]

[0071] Table 4 Formula and Product Specifications

[0072]

[0073] Part Three: Preparation of Organosilicon Elastomers

[0074] With a molar ratio of 1:1 between silane bonds and olefin bonds, branched hydrogen-containing silicone oil and crosslinking agent were mixed evenly. Then, decamethylcyclopentasiloxane (D5) solvent was added to adjust the elastomer content (IEC) in the initial gel. Finally, vinyl platinum complex catalyst was added to the system to make the concentration of metallic platinum in the system 4.0 ppm. After stirring evenly, the mixture was allowed to stand at 80°C for 8 hours.

[0075] Table 5 below lists the required amounts of raw materials and the specifications of the branched hydrogen-containing silicone oil synthesized by the above method.

[0076] Table 5 Formula and Product Specifications

[0077]

[0078]

[0079] Crosslinking agent 1: Double-ended vinyl silicone oil with a number average molecular weight of 500, a viscosity of 6.8 mPa·s, and a vinyl content of 10.80%.

[0080] Crosslinking agent 2: dual-end vinyl silicone oil with a number average molecular weight of 1000, a viscosity of 16.5 mPa·s, and a vinyl content of 5.4%.

[0081] Crosslinking agent 3: dual-terminated vinyl silicone oil with a number average molecular weight of 2000, a viscosity of 28.3 mPa·s, and a vinyl content of 2.7%.

[0082] Crosslinking agent 4: dual-terminated vinyl silicone oil with a number average molecular weight of 3000, a viscosity of 44.2 mPa·s, and a vinyl content of 1.8%.

[0083] Crosslinking agent 5: dual-terminated vinyl silicone oil with a number average molecular weight of 4000, a viscosity of 63.8 mPa·s, and a vinyl content of 1.35%.

[0084] Crosslinking agent 6: 1,5-hexadiene;

[0085] Crosslinking agent 7: 1,6-heptadiene.

[0086] It should be noted that the IEC values ​​in Table 5 above are the IEC values ​​for the optimal performance of the elastomer corresponding to each elastomer number. The optimal IEC value was obtained by screening each sample after performance tests with different solid contents to show the best performance of the sample.

[0087] In the fourth part of the test, the FEC value of each sample was finally adjusted to 15 wt%, so the final performance was comparable. The selection of the optimal IEC value in this part provides a scientific basis for comparison of the performance in the fourth part.

[0088] Part Four: Gel Preparation and Performance Testing;

[0089] The elastomer was sheared and pulverized using a three-roll mill, re-weighed, and then diluted and swollen with an additional solvent, decamethylcyclopentasiloxane (D5), to adjust the elastomer content (FEC) in the final gel to 15%. After vacuum degassing, a colorless to pale yellow transparent gel was obtained. Its transmittance, dispersion viscosity, and skin feel were evaluated.

[0090] I. Transmittance test method: 1. Put the elastomer gel sample into a 1cm cuvette, then put it into a plastic centrifuge tube and centrifuge at 3500rpm to defoam until no bubbles are present.

[0091] 2. Turn on the UV spectrophotometer and preheat the instrument for 20 minutes.

[0092] 3. In another clean blank cuvette, place clean decamethylcyclopentasiloxane as a standard. Measure its transmittance at 420 nm to calibrate the instrument and ensure that the transmittance is 100 ± 0.01.

[0093] 4. Using the above-mentioned decamethylcyclopentasiloxane as a reference, the transmittance of the elastomer gel sample was determined. The measurement was performed in parallel three times, and the average value of the results was taken as the transmittance of the elastomer gel sample to be tested.

[0094] II. Thickening Viscosity Testing Methods:

[0095] Weigh 100.0g of the organosilicon gel compound and add it to a 500mL beaker. Add 200.0g of decamethylcyclopentasiloxane to the beaker. After mechanically stirring at room temperature for 30min, a diluted organosilicon gel sample is obtained. Store the sample in a 25℃ constant temperature oven for 24 hours, and then use a Brookfield rotational viscometer to test the viscosity.

[0096] III. The evaluation method for skin feel assessment is as follows:

[0097] Weigh 0.5g of silicone elastomer polymer and apply it evenly to the clean, dry back of the hand, spreading it to the same size. Then, judge the intensity of the skin feel by sensory evaluation. The skin feel score ranges from 1 to 5. Ten experienced daily chemical formulation engineers were selected to conduct this evaluation, and then the average score was calculated. The higher the score, the better the skin feel.

[0098] The test results are shown in Table 1.

[0099] Table 6 Test Results

[0100]

[0101]

[0102] Results analysis:

[0103] 1. Elastomers 1 to 5 were reacted using different types of crosslinking agents and branched hydrogen-containing silicone oils, and the number of suspended segments formed by the single-end vinyl silicone oil was controlled. The results show that the light transmittance of the above five elastomers remained above 94%, and the thickening viscosity remained at 2.0*10. 4 The above results from elastomers 1 to 5 indicate that the excellent skin feel evaluation leads to the preliminary conclusion that the branched structure helps improve the product's light transmittance and thickening viscosity.

[0104] 2. Elastomers 6 to 10 used branched hydrogen-containing silicone oils of different specifications and monovinyl-terminated silicone oils as raw materials. The results showed that the light transmittance was as low as 93%, and the viscosity was generally maintained at 2.0*10. 4 The high light transmittance, low viscosity, and mediocre skin feel of elastomer 10 are due to the following reasons: too few suspension segments and excessively long suspension segments; the insufficient number of suspension segments formed by the single-ended vinyl silicone oil prevents the formation of good physical entanglement, while the excessively long segments cause steric hindrance, resulting in insufficient cross-linking. Therefore, the elastomer gel obtained from elastomer 10 has low viscosity and a mediocre skin feel.

[0105] 3. The a / b ratio of elastomers 11 and 13 is less than 0.91, indicating that there is too much single-end vinyl silicone oil grafting. Since the molar ratio of silicon-hydrogen bonds to olefin bonds is 1:1, it means that the amount of crosslinking agent is reduced, which directly results in a decrease in viscosity. At the same time, the x value of elastomer 11 is greater than that of elastomer 13, which will cause the molecular weight of elastomer 11 to be too large, resulting in low light transmittance of the elastomer gel.

[0106] The elastomer 12 has m = 1.6, a = 11.3, and b = 0.7, which means that the branched hydrogen-containing silicone oil has a high hydrogen content (0.65%) and a low proportion of single-end vinyl silicone oil grafting. The high hydrogen content means excessive crosslinking. The low proportion of single-end vinyl silicone oil grafting means that more hydrogen bonds are used for crosslinking. Under the condition of excessive crosslinking, the product has poor thickening ability and low light transmittance. Under the premise of excessive crosslinking agent, even if the single-end vinyl silicone oil forms physical entanglement, it cannot play a significant role in improving the product.

[0107] The elastomer 14 has an m of 167.7, an a of 40.1, and a b of 0.4. The smaller proportion of end vinyl silicone oil grafting means that the remaining hydrogen bonds are used for crosslinking, which produces similar results to elastomer 12.

[0108] The difference between elastomer 14 and elastomer 12 is that elastomer 14 has a higher m value, and the corresponding branched hydrogen-containing silicone oil has a lower hydrogen content than elastomer 12. Its crosslinking density is also lower than that of elastomer 12, so its light transmittance, viscosity, and skin feel are all better.

[0109] The value of b in elastomer 15 is too small, resulting in insufficient grafting and an insignificant effect of the side chains. This leads to acceptable light transmittance but poor thickening. Although the x value of the single-ended vinyl silicone oil is relatively large, it may theoretically have a strong thickening gain effect. However, due to the small value of b, the gain caused by the increase of x is not significant.

[0110] Meanwhile, all the cases show that skin feel and thickening performance are positively correlated.

[0111] The applicant declares that the present invention is illustrated by the above embodiments, but the present invention is not limited to the above process steps, nor does it mean that the present invention must rely on the above process steps to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials used in the present invention, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. An organosilicon elastomer, characterized in that, It is prepared from branched hydrogen-containing silicone oil and crosslinking agent containing olefin functional groups; The chemical formula of branched hydrogen-containing silicone oil is shown in Formula 3 below; m=1.6~167.7; x=4.4~51.7; a=7.5~37.2; b=2.2~15.4; a: b=0.91~11.

27.

2. The organosilicon elastomer according to claim 1, characterized in that, The branched hydrogen-containing silicone oil is prepared from hydrogen-containing silicone oil and single-end vinyl silicone oil; the hydrogen content of the hydrogen-containing silicone oil is 0.1wt% to 1.2wt%; the hydrogen content of the branched hydrogen-containing silicone oil is 0.03wt% to 0.3wt%.

3. The organosilicon elastomer according to claim 1, characterized in that, The crosslinking agent has the following structural formula: R1-X-R2; both R1 and R2 have olefin bonds; X is an alkyl group, a polyoxyalkylene group, or a polysilyl group.

4. The organosilicon elastomer according to claim 1, characterized in that, The crosslinking agent is a dual-terminated vinyl silicone oil with a molecular weight of 500 to 4000; or, the crosslinking agent is 1,5-hexadiene or 1,6-heptadiene.

5. The organosilicon elastomer according to claim 1, characterized in that, The molar ratio of the silane-hydrogen bonds in the branched hydrogen-containing silicone oil to the olefin bonds in the crosslinking agent is 0.8–1.2:

1.

6. The organosilicon elastomer according to claim 2, characterized in that, The molecular weight of the hydrogen-containing silicone oil is 1049–14780; the molecular weight of the branched hydrogen-containing silicone oil is 3170–35041.

7. The organosilicon elastomer according to claim 2, characterized in that, The structural formula of the hydrogen-containing silicone oil is shown in Formula 1 below; Formula 1: n=11~40.5; m=1.6~167.7; a+b=n; The structural formula of the single-ended vinyl silicone oil is shown in Formula 2 below; Formula 2: x＝4.4～51.7。 8. A method for preparing an organosilicon elastomer as described in any one of claims 1 to 7, characterized in that: Branched hydrogen-containing silicone oil and crosslinking agent are dispersed in a solvent and reacted in the presence of a catalyst.

9. The method for preparing the organosilicon elastomer according to claim 8, characterized in that: The reaction time is 6–10 hours, and the reaction temperature is 70–90℃; the catalyst is a platinum catalyst.

10. Using the organosilicon elastomer as described in any one of claims 1 to 7 to prepare a skin feel modifier or thickener in daily chemical products.

11. A daily chemical product, characterized in that, It contains the organosilicon elastomer as described in any one of claims 1 to 7.

Images