阅读说明：本技术 一种天然油脂改性有机硅弹性体及其制备方法 (Natural oil modified organic silicon elastomer and preparation method thereof ) 是由 李信成 孙东明 许丹静 杨建坤 吴寒 于 2020-05-25 设计创作，主要内容包括：本发明涉及高分子材料领域,更具体的说涉及一种天然油脂改性有机硅弹性体及其制备方法。所述的天然油脂改性有机硅弹性体为<Image he="165" wi="700" file="DDA0002506128870000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>其中,R＝含有不饱和键的天然油脂或经丙烯酸化的天然油脂,m、n＝3～8。该有机硅弹性体与天然油脂具有较好的相容性、易添加,且无粘腻感。(The invention relates to the field of high polymer materials, in particular to a natural oil modified organic silicon elastomer and a preparation method thereof. The natural oil modified organic silicon elastomer is)

1. The invention provides a natural oil modified organic silicon elastomer which is characterized by having the following structure:

wherein R is a natural oil or an acrylated natural oil containing an unsaturated bond, and m and n are 3-8.

2. The natural oil-and-fat modified silicone elastomer according to claim 1, wherein the natural oil-and-fat is a natural oil-and-fat having a high unsaturated fatty acid content, or an acrylated natural oil-and-fat.

3. The natural oil-modified silicone elastomer of claim 1, wherein the natural oil having a high content of unsaturated fatty acids is one of sunflower oil, olive oil, soybean oil, peanut oil and corn oil.

4. The natural oil-and-fat-modified silicone elastomer according to claim 1, wherein the acrylated natural oil is acrylated epoxidized soybean oil.

5. The natural oil-and-fat-modified silicone elastomer according to claim 1, wherein the natural oil-and-fat-modified silicone elastomer is

m、n＝3～8。

6. The natural oil-and-fat-modified silicone elastomer according to claim 1, wherein the natural oil-and-fat-modified silicone elastomer is

m、n＝3～8。

7. A preparation method of a natural oil modified organic silicon elastomer is characterized by comprising the following steps:

in N₂Under protection, hydrogen-containing silicone oil with an H value of 1-20 percent is stirred and reacted with natural oil with high unsaturated fatty acid content or acrylated natural oil and a catalyst to generate the natural oil modified organic silicon elastomer.

8. Use of the silicone elastomer according to claim 1 as an additive for skin care products, make-up, antiperspirants or deodorants.

Technical Field

The invention relates to the field of high polymer materials, in particular to a natural oil modified organic silicon elastomer and a preparation method thereof.

Technical Field

Silicone elastomers are a class of materials prepared with the relatively small particle structure inherent to silicone powder particles and their elastic properties (the ability to deform but return to their original shape after removal of the deforming force), which have a unique silky and powdery feel and are widely used in personal care products.

Silicone elastomers have limited compatibility with various personal care ingredients, personal care actives and healthcare actives. The thickening, gelling efficiency, and even sensory benefits of silicone elastomers in the presence of personal care ingredients, personal care actives and healthcare actives are lost, and therefore, there is a need to further improve the compatibility of silicone elastomers with various personal care ingredients and actives.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a natural oil modified organic silicon elastomer which is compatible with most active ingredients (such as spice, sunscreen cream, vitamins and vitamin derivatives), is easy to add and can be used as a thickening agent for water-in-oil and anhydrous formulas on the basis of absorbing the previous research experience, and also aims to provide a preparation method of the organic silicon elastomer, which is convenient for industrial production.

(II) technical scheme

The invention provides a natural grease modified organic silicon elastomer which has the following structure:

wherein R is a natural oil or an acrylated natural oil containing an unsaturated bond, and m and n are 3-8.

The natural oil is natural oil with high unsaturated fatty acid content or natural oil which is subjected to acrylic acid treatment.

The natural oil with high unsaturated fatty acid content is one of sunflower seed oil, olive oil, soybean oil, peanut oil and corn oil.

The natural oil subjected to the acrylation is acrylated epoxidized soybean oil.

The natural oil modified organic silicon elastomer is

m、n＝3～8。

The natural oil modified organic silicon elastomer

m、n＝3～8。

The natural grease modified organic silicon elastomer is prepared by the following method: in N₂Under protection, hydrogen-containing silicone oil with an H value of 1-20 percent is stirred and reacted with natural oil with high unsaturated fatty acid content or acrylated natural oil and a catalyst to generate the natural oil modified organic silicon elastomer.

The natural oil modified organic silicon elastomer is used as an additive for skin care products, cosmetics, antiperspirants or deodorants.

The method provides a novel natural grease modified organic silicon elastomer, and the organic silicon elastomer is modified by natural grease, so that the organic silicon elastomer has higher stability and does not react with solvents and other substances. Meanwhile, the organic silicon elastomer prepared by the method has better compatibility with natural grease, and has the characteristics of high glossiness, refreshing property and no greasiness; at the same time, the silicone elastomers prepared in accordance with the present invention may be mixed with personal care or health care actives; and can promote the rapid absorption of active ingredients, reduce the sticky feeling of the formula and have long-lasting skin texture.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The epoxidized soybean oil acrylate is prepared according to the method of Chinese invention patent CN103013682B or by adopting the commercially available epoxidized soybean oil, and comprises the following specific steps:

a. placing a mixture of 50g of refined soybean oil, 12.5g of formic acid and 25g of petroleum ether in a three-opening reaction bottle with an electric stirrer, a dropping funnel and a condensing tube, placing the mixture in a constant-temperature water bath, uniformly mixing, stirring, raising the temperature to 45 ℃, and dropwise adding a mixture of hydrogen peroxide and phosphoric acid in a mass ratio of 1.3: 0.005;

b. after the mixture of the hydrogen peroxide and the phosphoric acid is dripped and the temperature is stable, adjusting the temperature of the system to 55 ℃ and reacting for 3 hours;

c. after the reaction is finished, transferring the reaction mixture into a separating funnel, standing for layering, removing a water layer, washing an oil layer to be neutral by using water, and distilling under reduced pressure to obtain epoxidized soybean oil, wherein the epoxy value is 5.3, the iodine value is 1.3, the acid value is 0.3, and the yield is 91%;

d. adding calcium oxide with the mass percent of 5% of the raw material into the residual formic acid aqueous solution after the reaction to obtain calcium formate, and recovering;

e. adding epoxidized soybean oil, acrylic acid, p-toluenesulfonic acid and hydroquinone in a mass ratio of 1:0.3:0.01:0.008 into a reaction kettle, vacuumizing at the temperature of 60 ℃ (the pressure is 0.03MPa), and reacting for 3 hours;

f. after the reaction, the unreacted mixed fatty acid is evaporated out under reduced pressure, and the light yellow transparent oily matter epoxy soybean oil acrylate is obtained, wherein the iodine value is 32.8 percent.