阅读说明：本技术 一种糖改性硅油及其应用 (Sugar-modified silicone oil and application thereof ) 是由 黄振宏 宋扬 刘小芳 林文生 于 2020-06-22 设计创作，主要内容包括：本发明提供了一种糖改性硅油及其应用。所述糖改性硅油由如下按重量百分比计算的组分经酰胺化反应制成：15～25.8％的糖内酯、11.4～45％的氨基聚硅氧烷及余量为的水,其中,氨基聚硅氧烷的氨基含量为3.9～5.9mmoL/g,所述糖改性硅油的pH为中性,所述糖内酯中的酯基与氨基聚硅氧烷中的氨基的摩尔比为1:1。本发明所述糖改性硅油,与水有很好的亲和力,同时也与皮肤表面有很好的亲和力,糖改性硅油更容易在皮肤的表面形成均匀的保护膜,具有很好的保湿效果。还可以通过调节糖内酯与氨基聚硅氧烷硅氧链节的比例,控制糖内酯与氨基聚硅氧烷的摩尔比值、改变糖内酯的种类,进一步调节其在水中的溶解性能以及保湿性能。(The invention provides sugar modified silicone oil and application thereof. The sugar modified silicone oil is prepared by amidation reaction of the following components in percentage by weight: 15-25.8% of sugar lactone, 11.4-45% of amino polysiloxane and the balance of water, wherein the amino content of the amino polysiloxane is 3.9-5.9 mmoL/g, the pH of the sugar modified silicone oil is neutral, and the molar ratio of ester groups in the sugar lactone to amino groups in the amino polysiloxane is 1: 1. The sugar modified silicone oil has good affinity with water and also has good affinity with the surface of the skin, and the sugar modified silicone oil is easier to form a uniform protective film on the surface of the skin and has good moisturizing effect. The solubility and the moisture retention performance of the sugar lactone in water can be further adjusted by adjusting the proportion of the sugar lactone to the amino polysiloxane siloxane chain segments, controlling the molar ratio of the sugar lactone to the amino polysiloxane, changing the type of the sugar lactone.)

1. The sugar modified silicone oil is characterized by being prepared from the following components in percentage by weight through an amidation reaction:

15-25.8% of sugar lactone;

11.4-45% of amino polysiloxane;

the balance of water;

the amino content of the amino polysiloxane is 3.9-5.9 mmoL/g;

the pH of the sugar modified silicone oil is neutral, and the molar ratio of ester groups in the sugar lactone to amino groups in the amino polysiloxane is 1: 1.

2. The sugar-modified silicone oil according to claim 1, wherein the sugar lactone is one or a combination of glucose lactone, ribonolactone or hydroxybutyrolactone.

3. The sugar-modified silicone oil according to claim 1, wherein the viscosity of the amino polysiloxane is 50 to 7000 mpa.s.

4. The sugar-modified silicone oil according to claim 1, wherein the amino polysiloxane is obtained by polymerizing monomers in the presence of an alkali catalyst and an alcohol ether catalyst under inert gas conditions;

wherein the monomer is amino alkoxy silane or a mixture of amino alkoxy silane and silicone oil containing hydroxyl.

5. The sugar-modified silicone oil according to claim 4, wherein the aminoalkoxysilane is one or more selected from aminopropyltrimethoxysilane, aminopropyltriethoxysilane, aminopropylmethyldimethoxysilane and aminopropylmethyldiethoxysilane.

6. The sugar-modified silicone oil according to claim 4, wherein the amount of the aminoalkoxysilane is 53 to 100% by mass of the total monomer.

7. The sugar-modified silicone oil according to claim 4, wherein the hydroxyl group-containing silicone oil has a molecular weight of 400 to 3000.

8. The sugar-modified silicone oil according to claim 4, wherein the alcohol ether catalyst is diethylene glycol ethyl ether.

9. The sugar-modified silicone oil according to claim 4, wherein the alcohol ether catalyst is used in an amount of 0.8 to 10% by mass based on the total mass of the monomers.

10. Use of the sugar-modified silicone oil according to any one of claims 1 to 9 for producing a moisturizing product.

Technical Field

The invention belongs to the field of daily chemicals, and particularly relates to sugar modified silicone oil and application thereof.

Background

Moisturizing cosmetics are playing a considerable role in improving and enhancing the quality of life of people, and are also becoming popular with consumers. With the increase of the demand of moisturizing cosmetics, the market prospect of the moisturizing cosmetics becomes wider and wider, the future development trend of the moisturizing cosmetics is surrounded, and the development of a new high-efficiency moisturizing active agent and a new moisturizing efficacy evaluation method are developed.

The traditional moisturizer mainly comprises glycerin, propylene glycol, butylene glycol, sorbitol, sodium pyrrolidone carboxylate, polyethylene glycol, sodium lactate and the like. They are synthesized by chemical methods, and besides sodium pyrrolidone carboxylate, other cosmetics are still widely used at present as moisturizing agents. They all have the advantages of good moisture retention, low cost and easy availability. Glycerin is the earliest humectant used in cosmetics and is also a good humectant of cosmetics, and because of strong hygroscopicity, the cosmetics cannot directly use pure glycerin, otherwise water is sucked out of skin. Generally, according to the weight of water: glycerin-3: the moisture-keeping effect can be achieved only by preparing the components according to the proportion of 1. Propylene glycol and butylene glycol are also commonly used moisturizers, and simultaneously, propylene glycol can also be used as a solvent for dissolving water-insoluble substances and has the function of promoting penetration. Sorbitol is non-toxic, easily soluble in water, stable in chemical properties, has good moisture retention, has the same moisture retention capacity as glycerin, and is also commonly used in toothpaste due to its slightly sweet and cool good taste.

Although conventional moisturizers can absorb moisture from the air to achieve a moisturizing effect, they are carried out in a high humidity environment, and in dry and cold weather conditions, they can absorb moisture from the inner layer of the skin to make the skin drier and also make the cosmetic sticky. Although water-insoluble emollients have a good moisturizing effect, the closed lubricating film formed therefrom is air-impermeable and lipidic, and thus has a certain effect of inhibiting the physiological and metabolic functions of the skin. Therefore, the deep moisturizing agent is the most ideal moisturizing agent and is the direction of future research and development. Unlike water-binding moisturizers and water-insoluble emollients, deep moisturizers maintain the water content of the stratum corneum by regulating the water absorption properties of the keratinocytes and the intercellular lipid barrier structure, achieving a moisturizing effect. How to more fully utilize the deep moisturizing mechanism is yet to be further researched and developed.

In order to solve the problems, the polysaccharide extracted from natural animals and plants has the characteristics of no toxic or side effect, good affinity with skin and the like. Therefore, the polysaccharide is used as a moisturizing agent and applied to cosmetics, meets the requirements of people on high-quality cosmetics, and also becomes a development trend of moisturizing cosmetics. With the progress of research, the polysaccharide moisturizers currently applied to cosmetics mainly comprise hyaluronic acid, chitin and derivatives thereof, plant polysaccharide extracts, heparin, low relative molecular weight heparin and the like.

L' Oreal s.a. eureya, patent US20110020256, reports that the combination of a saccharide siloxane surfactant with a modifying polymer forms a stable emulsion capable of imparting high gloss on the lips without the use of silicone fluids conventionally used to provide gloss. The use of a saccharide siloxane surfactant additionally eliminates the need to use a surfactant/emulsifier to form a stable emulsion. Finally, when the resulting composition is applied to the lips, both are hydrates, making the lips feel abnormally fresh and pleasant.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide sugar modified silicone oil. It has the advantages of no adverse side effects, good skin affinity, and can be used as humectant.

The invention also aims to provide application of the sugar modified silicone oil.

The above object of the present invention is achieved by the following scheme:

the sugar modified silicone oil is prepared by amidation reaction of the following components in percentage by weight:

15-25.8% of sugar lactone;

11.4-45% of amino polysiloxane;

the balance of water;

the amino content of the amino polysiloxane is 3.9-5.9 mmoL/g;

the pH of the sugar modified silicone oil is neutral, and the molar ratio of ester groups in the sugar lactone to amino groups in the amino polysiloxane is 1: 1.

The sugar modified silicone oil contains a large amount of polar functional groups, has good affinity with water and skin surface according to the similar compatibility principle, can form a uniform protective film on the surface of the skin more easily, and can be used as a humectant. The sugar modified silicone oil can be ensured to have better moisturizing performance by controlling the amino content of the amino polysiloxane. The solubility and the moisture retention performance of the sugar lactone in water can be further adjusted by adjusting the proportion of the sugar lactone to the amino polysiloxane siloxane chain segments, controlling the molar ratio of the sugar lactone to the amino polysiloxane, changing the type of the sugar lactone. The sugar lactone can be one or more of common glucose sugar lactone, ribonolactone or hydroxybutyrolactone. Preferably, the sugar lactone is a glucolactone.

Preferably, the viscosity of the sugar modified silicone oil is 1000-11000 mpa.s.

The viscosity of the aminopolysiloxane influences the viscosity of the sugar-modified silicone oil to a certain extent. Preferably, the viscosity of the amino polysiloxane is 50-7000 mpa.s.

Preferably, the amino polysiloxane is obtained by the polymerization reaction of monomers under the inert gas condition of the presence of an alkali catalyst and an alcohol ether catalyst; wherein the monomer is amino alkoxy silane or a mixture of amino alkoxy silane and silicone oil containing hydroxyl.

Preferably, the amino alkoxy silane is one or a combination of more of aminopropyl trimethoxy silane, aminopropyl triethoxy silane, aminopropyl methyl dimethoxy silane and aminopropyl methyl diethoxy silane, and the using amount of the amino alkoxy silane is 53-100% of the total mass of the monomer.

Preferably, the molecular weight of the hydroxyl-containing silicone oil is 400-3000.

Preferably, the base catalyst may be selected from common base catalysts. Further preferably, the alkali catalyst is one or a combination of several of potassium hydroxide, sodium ethoxide and tetramethylammonium hydroxide.

Preferably, the dosage of the alkali catalyst is 0.003-0.007% of the total mass of the monomers.

Preferably, the alcohol ether catalyst is diethylene glycol ethyl ether, and the using amount of the alcohol ether catalyst is 0.8-10% of the total mass of the monomers.

Preferably, the temperature of the polymerization reaction is 80-90 ℃, and the time of the polymerization reaction is 3-5 h.

Preferably, the temperature of the amidation reaction is 70-80 ℃, and the time of the amidation reaction is 3-4 h.

The sugar modified silicone oil is applied to the preparation of moisturizing products.

Compared with the prior art, the invention has the following beneficial effects:

the sugar modified silicone oil provided by the invention contains a large amount of polar functional groups, and according to the principle of similar compatibility, the sugar modified silicone oil has good affinity with water and also has good affinity with the surface of skin, so that the sugar modified silicone oil can more easily form a uniform protective film on the surface of the skin, and has a good moisturizing effect. The solubility and the moisture retention performance of the sugar lactone in water can be further adjusted by adjusting the proportion of the sugar lactone to the amino polysiloxane siloxane chain segments, controlling the molar ratio of the sugar lactone to the amino polysiloxane, changing the type of the sugar lactone. Therefore, the sugar modified silicone oil can be used as a new raw material for preparing the humectant.

Drawings

FIG. 1 is an infrared spectrum of sugar-modified silicone oil B1 prepared in example 1.

Detailed Description

The present invention will be further described with reference to the following embodiments. Unless otherwise specified, the raw materials, reagents and solvents used in the present invention were all purchased commercially without any treatment. The present invention is described in further detail with reference to the following examples, but the embodiments of the present invention are not limited to the examples, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention. In the present specification, "part" and "%" represent "part by mass" and "% by mass", respectively, unless otherwise specified.