KR20030077087A - Silicon in water emulsion type cosmetic composition - Google Patents

Abstract

PURPOSE: Provided is a silicon in water type cosmetic composition which contains dimethicone/vinyldimethicone crosspolymer (and) polyoxyethylene (12-14) ether as an emulsifying agent. CONSTITUTION: A silicon in water type cosmetic composition characteristically contains 4.0-34.5 wt.% of silicon oil, 2.0-15.0 wt.% of dimethicone/vinyldimethicone crosspolymer (and) polyoxyethylene (12-14) ether and 0.1-1.0 wt.% of carboxyvinyl polymer, based on the total weight of the silicon in water type cosmetic composition.

Description

Silicone in water emulsion type cosmetic composition

The present invention relates to a composition of an underwater silicone emulsion cosmetic using dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier. More specifically, it is emulsified by adsorbing silicone oil using dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier without using a conventionally used silicone emulsifier of the existing system. Gel type underwater silicone (S) that has excellent skin safety, improves skin pulling phenomenon, lack of moisturizing feeling, gives moisture and moisturizes, and has no stickiness and stability over time. / W) relates to an emulsified cosmetic composition.

In general, an emulsified form containing a silicone oil can be divided into silicone (S / W) emulsion type or silicone heavy water (W / S) emulsion type. However, there were some problems due to the lack of persistence of the skin pulling or moisturizing feeling due to the silicone oil or the emulsifiers used in the existing moisturizing feeling. However, silicone oils differ in their molecular weight and structure, but are generally very light due to the elastic and three-dimensional silicone oil's structural properties. They are excellent in terms of malleability, spreadability, skin stability, water resistance and softening effects. It can be beneficial to your skin.

As an emulsifier of conventional silicone emulsion cosmetics in water, polyoxyalkylene-modified dimethicone copolyol (dimethicone copolyol) -based activators are mainly used, and polyoxyethylene sorbitan (20. Monooleic acid polyoxyethylene sorbitan (20.E.) and monostearic acid polyoxyethylene sorbitan (20. E.) are also used as auxiliary emulsifiers or lubricating agents (Korean Patent Laid-Open No. 2000-71703). These emulsifiers have no advantages in skin moisturizing and skin safety and have no function other than emulsifier function. And no silicone oil is emulsified with only dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether.

The present invention is intended to solve the above problems and may give irritation or burden to the skin, polyoxyalkylene-modified dimethiconol-based emulsifiers or monolauric acid polyoxyethylene sorbitan (20. Softener is a dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier, without using an emulsifier of O) or a polyoxyethylene sorbitan (20.E) system of a monooleic acid. In order to improve the skin safety, usability, and moisture retention by providing a silicone emulsified cosmetic composition in water using only silicone oil.

In order to achieve the above object, the present invention provides a) dimethicone / vinyldimethicone crosspolymer (end) polyoxyethylene (12-14) ether in an amount of 2.0 to 15.0 wt% based on the total amount of the silicone emulsion composition in water, b) silicone It is to provide an oil-based silicone emulsion cosmetic composition, characterized in that the oil containing 4.0 to 34.5% by weight relative to the total amount of the silicone emulsion composition in water, c) 0.1 to 1.0% by weight relative to the total amount of the gel emulsion composition.

Hereinafter, the present invention will be described in detail.

As the oil of the present invention, both volatile and nonvolatile oils may be used as the silicone oil. As the nonvolatile silicone oil, dimethicone having a viscosity of 6 centistrokes (cs) is preferable. The amount of the nonvolatile silicone oil is 4.0 to 34.5% by weight based on the total amount of the silicone emulsion composition in water.

In addition, the volatile silicone oil may include a cyclomethicone. The amount of the volatile silicone oil is 4.0 to 34.5% by weight based on the total amount of the gel emulsion composition. In the present invention, the nonvolatile silicone and the volatile silicone oil may be used alone or in combination. When the mixture is used, the mixing ratio of the volatile silicone oil and the nonvolatile silicone oil of the present invention is preferably 1: 4 to 4: 1 by weight.

The amount of the mixture of the volatile and nonvolatile silicone oil is 4.0 to 34.5% by weight based on the total amount of the silicone emulsion composition in water.

The emulsifier in the present invention uses dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether. In conventional general silicone emulsion formulations, silicone-based emulsifiers and nonionic emulsifiers are used alone or in combination. In this case, a silicone emulsifier mainly used may include dimethicone, dimethicone copolyol, or silicone glycol copolyol. When only the silicone emulsifier is used as the main agent, dimethiconol and dimethicone copolyols in the range of HLB 8.0 to 13.0 are used, and when used in combination with a nonionic emulsifier, a silicone glycol copolymer (HLB is 3.0 to 8.0), lauyl One or more selected from methicone polyphenol (HLB is 3.0 to 8.0) and dimethicone polyphenol (HLB is 3.0 to 8.0) and glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, and polyoxyethylene sorbitan monostearate (20. E. O), mono-oleic acid polyoxyethylene sorbitan (20. E. O), and one or more selected from Fiji 40 stearate.

In the present invention, no dimethicone, dimethicone copolyol or silicone glycol polyol, laurylmethicone copolyol, and monooleic acid polyoxyethylene sorbitan (20.E.), etc., mentioned above, are used. Dimethicone / vinyldimethicone crosspolymer (end) polyoxyethylene (12-14) ether is used at 2.0 to 15.0% by weight based on the total amount of the silicone emulsion composition in water.

In addition, a thickener was used to stabilize the emulsion and adjust the viscosity. Carboxyvinyl polymer was used as the organic thickener. Carboxyvinylpolymers used herein are homopolymers of acric acid crosslinked with allyl ethers of pentaerythritol, sucrose, or propylene, which are commonly used in cosmetics manufacturers routinely for this purpose. The amount of the thickener is 0.1 to 1.0% by weight based on the total amount of the silicone emulsion composition in water.

Moisturizers may be used to impart a moisturizing effect to the above ingredients. As a moisturizer, 1,3-butylene glycol, concentrated glycerin, betaine and trehalose may be used. Can be used. The amount of the moisturizing agent is 1.0 to 20.0% by weight based on the total amount of the silicone emulsion composition in water.

The cosmetic composition of the present invention may be used as a skin care cosmetic such as moisturizing cream, moisturizing milk, pore care cream, pore care milk, essence and lotion by adding an appropriate active agent.

The following presents preferred examples and comparative examples to aid in understanding the invention. In addition, experiments such as long-term stability, skin safety, and usability were performed on the cosmetics prepared after the preparation of the water-in-silicone emulsion cosmetic of the present invention. However, the following examples are merely provided to more easily understand the configuration of the present invention, but the scope of the present invention is not limited to the description of the embodiments.

<Example and Comparative Example Preparation Method>

Add phase B to table A shown in Table 1 and stir using a homomixer, add phase C to the mixed phase to obtain viscosity, and then add phase D to neutralize the desired silicone emulsified cosmetic in water. Got it.

Quality evaluation was performed on 40 women aged 20 to 38 for the long-term stability, skin safety and usability of the underwater silicone emulsion cosmetic composition prepared in Examples 1-3 and Comparative Examples 1-3.

Experimental Example 1: Long-term storage stability

In order to determine the long-term stability of the water-based silicone emulsion cosmetic composition prepared in Examples 1-3 and Comparative Examples 1-3, the stability after two months under the conditions shown in the table below was evaluated according to the following evaluation criteria. Cycle evaluation was assessed using a cyclic temperature change method which was observed circulating gradually over a two week period in the range of 45 ° C to -10 ° C. The results for long term storage stability are shown in the table below.

Evaluation standard

1. Very bad (complete separation) 2. Bad (partial separation)

3. Normal (fine separation) 4. Good (good separation)

5. Very good (no separation signs at all)

Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 45 ℃ 4 4 5 3 3 3 35 ℃ 5 4 5 4 3 4 Room temperature 5 5 5 4 4 4 0 ℃ 5 4 5 3 4 4 cycle 5 5 5 2 3 2

As shown in the above table, it can be seen that the water-based silicone emulsion cosmetic prepared in the example is superior in terms of long-term storage stability than the water-based silicone emulsion cosmetic prepared in the comparative example. This was judged to be because the content ratio of dimethicone / vinyldimethicone crosspolymer (end) polyoxyethylene (12-14) ether and the network of thickeners were made very stable in the silicone emulsion cosmetic composition in water.

Experimental Example 2: Skin Safety

A patch test was performed on the upper arm region of both arms of 40 women aged 20-38 years with respect to the underwater silicone emulsified cosmetic composition prepared in Examples 1-3 and Comparative Examples 1-3. After the removal of 2 hours, it was determined whether the skin side effects such as itching, erythema and irritation were shown in the table below.

Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Positive responders One One One 9 8 6 % 2.5 2.5 2.5 22.5 20.0 15.0

As shown in the table, it can be seen that the water-based silicone emulsified cosmetic composition prepared in Examples 1-3 is relatively superior in skin safety than the cosmetic composition prepared in Comparative Examples 1-3. From this, it can be seen that the dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether which is an emulsifier is superior in terms of safety than the emulsifiers of the comparative example.

Experimental Example 3: Evaluation of Usability

After using the water-based silicone emulsion cosmetic composition prepared in Examples 1-3 and Comparative Examples 1-3 for 40 women 20-38 years old on both sides of the face and feeling for the items in the following table according to the following criteria Evaluation was made. The results are shown in the table below.

Evaluation standard

1. Very poor, 2. Poor, 3. Normal, 4. Good, 5. Very good

Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Oiliness 5 5 5 2 3 4 Freshness 5 5 4 5 4 4 Tightness 4 5 5 2 2 2 Moisturizing 4 4 5 2 2 2 Skin pulling 4 5 5 2 2 2

As shown in the table above, the water-based silicone emulsion cosmetic of the present invention containing a dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier has a variety of oiliness, freshness, fit, moisturizing and spreading properties. Excellent results were found in the feeling comparison effect item. Therefore, the composition of the present invention can improve skin pulling and safety, which is the biggest disadvantage of the existing silicone emulsion in water, and effectively impart skin moisture persistence to keep the skin fresh and moist.

The composition of the present invention is obtained by emulsifying a dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier of an silicone emulsified cosmetic in water and a softener as a silicone oil and a thickener as a carboxyvinyl polymer. Silicone emulsion-type cosmetics in water can give excellent effects in skin safety, usability, moisturizing feeling.

Claims (4)

An underwater silicone emulsified cosmetic composition comprising dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether as an emulsifier of an underwater silicone emulsified cosmetic. The method of claim 1, Silicone oil is 4.0 to 34.5% by weight relative to the total amount of the silicone emulsified cosmetic composition in water, dimethicone / vinyl dimethicone crosspolymer (end) polyoxyethylene (12-14) ether is 2.0 to 3 to the total amount of silicone emulsified cosmetic composition in water 15.0% by weight and the carboxyvinyl polymer 0.1 to 1.0% by weight relative to the total amount of the silicone emulsion cosmetic composition in water. The method of claim 2, The silicone oil is an underwater silicone emulsified cosmetic composition, characterized in that the weight ratio of volatile silicone oil: non-volatile silicone oil is 1: 4 to 4: 1. The method of claim 3, The viscosity of the non-volatile silicone oil is 6 centistroke dimethicone (methistroke) dimethicone in water silicone emulsified cosmetic composition.