JP2000191438A - Cleansing cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an O/W emulsion type cleansing cosmetic exhibiting good permeating property to sulcus cutis of skin, having high cleansing effect and excellent in feeling to users. SOLUTION: This cleansing cosmetic comprises 1-80 wt.% dialkyl ether represented by the formula R1-R2 (R1 and R2 are each 6-22C alkyl and/or alkenyl group), 0.5-50 wt.% hydrophilic nonionic surfactant having >9 HLB and 0.1-40 wt.% nonionic surfactant having 3-9 HLB.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleansing cosmetic, and more particularly, an O / W emulsifying cleansing cosmetic having a good permeation into skin crevices, a high cleaning effect and an excellent feeling upon use. About.

[0002]

2. Description of the Related Art Recently, makeup cosmetics that do not require redressing over a long period of time have been developed and have stimulated consumer demand. On the other hand, these hard-to-drop cosmetics have the disadvantage that they hardly fall when dropped before going to bed or the like.

[0003] In response to these demands, oils containing ester oils such as liquid paraffin and triglyceride, cleansing creams, cleansing milks and cleansing lotions have been used.

[0004] However, liquid paraffin, triglyceride and the like used as these oils have poor penetration into the skin crevices, and make-up cosmetics remain in the skin crevices, resulting in insufficient cleanability. In addition, there was still a little oily feeling, and it was difficult to say that it was preferable. Therefore, a cleaning agent based on a cyclic silicone having a low oiliness and a high permeability to the skin sulcus has been used. However, the compatibility with other cosmetic raw materials such as surfactants is poor, and O /
It was difficult to formulate a W emulsion type cleansing cream, cleansing milk, cleansing lotion and the like.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an O / W emulsifying type cleansing which has good permeation into skin crevices, has a high cleaning effect, and has a low oily feeling and is excellent in use. To provide cosmetics.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above problems, and as a result, by blending a specific oily agent and a surfactant, an excellent cleansing cosmetic satisfying the above requirements. The present inventors have found that a composition useful as a raw material can be obtained and completed the present invention. That is, the cleansing cosmetic according to claim 1 of the present application has the general formula (1)
And 0.5 to 50% by weight of a hydrophilic nonionic surfactant having an HLB of more than 9, and 0.1 to 50% by weight of a nonionic surfactant having an HLB of 3 to 9. An O / W emulsifying cleansing cosmetic characterized by containing 1 to 40% by weight.

Hereinafter, the configuration of the present invention will be described in detail. The dialkyl ether of the component (A) used in the present invention is represented by the general formula (1), and is an alkyl and / or alkenyl group having 6 to 22 carbon atoms. An ether compound synthesized from a straight-chain or branched higher alcohol, and examples of the straight-chain alkyl group and alkenyl group include a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group,
Examples include a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, an oleyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, and a behenyl group. Examples of the branched alkyl group include 3-methylhexyl, 5-methylhexyl, 1-ethylhexyl, 2-ethylhexyl,
-Butylpentyl group, 5-methyloctyl group, 2-butyloctyl group, isotridecyl group, 2-pentylnonyl group, 2-hexyldecyl group, emery-type isostearyl group, 2-heptylundecyl group, 2-octyldodecyl group, and the like. Usually, these dialkyl ethers are used alone or in combination.

These dialkyl ethers can be produced according to a known method. For example, a process by condensing a fatty alcohol in the presence of p-toluenesulfonic acid is described, for example, in Birte de la Societe Cimique de France (Bull. Soc. Chem. Franc.
e) 333 (1949), DE-OS 40 39 950 (Hoechst) and EP 4103
No. 489 (Henkel). As dioctyl ether, those marketed by Henkel Japan K.K. under the trade name of Cethiol OE can be used.

The component (B) is a hydrophilic nonionic surfactant having an HLB of more than 9. In addition, HLB means the balance between hydrophilicity and lipophilicity, and in the present invention, was calculated by the following equation by Oda and Teramura. HLB = {inorganic value /} organic value × 10 Examples of the hydrophilic nonionic surfactant having an HLB exceeding 9 used in the present invention include polyoxyethylene alkyl ether, polyoxypropylene alkyl ether,
Polyethylene glycol fatty acid ester, ethylene oxide derivative of propylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, ethylene oxide derivative of mono- or polyglycerin fatty acid ester,
Polyoxyalkylene-type nonionic surfactants such as ethylene oxide derivatives of trimethylolpropane fatty acid esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene hydrogenated castor oil fatty acid esters; sucrose fatty acid esters; alkyl glucosides; Esters: polyglycerin alkyl ethers and the like. These are nonionic surfactants having a hydrophobic group such as an alkyl group or a fatty acid residue having 8 to 36 carbon atoms. More specifically, polyoxyethylene (12) cetostearyl ether, polyoxyethylene (20) cetostearyl ether, polyoxyethylene (30) cetostearyl ether, polyoxyethylene (10) behenyl ether, polyoxyethylene (20) Behenyl ether, polyoxyethylene (30) behenyl ether, polyoxyethylene (40) behenyl ether, polyoxyethylene (12) cetostearyl ether, polyoxyethylene (20) hydrogenated castor oil, polyoxyethylene (3
0) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (10) octyldodecyl ether, polyoxyethylene ( 20) octyldodecyl ether, polyoxyethylene (25) octyldodecylether, polyoxyethylene (30) octyldodecylether, polyoxyethylene (7) glyceryl monococoate, polyoxyethylene (7) glyceryl monocaprylate, polyoxy Ethylene (7) glyceryl mono (caprylate caprate), polyoxyethylene (7) glyceryl monolaurate, polyoxyethylene (15) glyceryl monococoate, polyoxyethylene (20) glyceryl monococoate , Polyoxyethylene (15) glyceryl isostearate, polyoxyethylene (3
0) glyceryl monoisostearate, polyoxyethylene (30) glyceryl triisostearate, polyoxyethylene (40) glyceryl triisostearate, polyoxyethylene (20) sorbitan monolaurate, polyoxyethylene (20) sorbitan Monostearate, polyoxyethylene (20) sorbitan monooleate, polyoxyethylene (30) sorbitol tetraoleate and the like. Of these,
Preferred are polyoxyethylene alkyl ethers, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, and ethylene oxide derivatives of mono- or polyglycerin fatty acid esters. These alone,
Alternatively, two or more kinds are used in combination.

Although the amount of the hydrophilic nonionic surfactant is not particularly limited, it is 0.5 to 50% by weight, preferably 1 to 40% by weight, based on the total composition of the cleansing agent for removing makeup cosmetics of the present invention. Is blended. If the amount is less than 0.5% by weight, it becomes difficult to prepare a stable preparation, and if the amount exceeds 50% by weight, the feeling of use becomes unfavorably heavy.

Examples of the nonionic surfactant having an HLB in the range of 3 to 9 include polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyethylene glycol fatty acid esters, and ethylene oxide derivatives of propylene glycol fatty acid esters. Polyoxyalkylene type such as polyoxyethylene sorbitan fatty acid ester, ethylene oxide derivative of mono- or polyglycerin fatty acid ester, ethylene oxide derivative of trimethylolpropane fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester Nonionic surfactants; sucrose fatty acid esters; mono- or polyglycerin fatty acid esters; alkyl glucosides; polyglycerin fatty acid esters; Li glycerol alkyl ethers. These are nonionic surfactants having a hydrophobic group such as an alkyl group or a fatty acid residue having 8 to 36 carbon atoms. More specifically, polyoxyethylene (2) lauryl ether, polyoxyethylene (3) lauryl ether, polyoxyethylene (5) stearyl ether, polyoxyethylene (5) decyltetradecyl ether,
Polyoxyethylene (10) decyl tetradecyl ether, polyoxyethylene (5) hexyl decyl ether, polyoxyethylene (5) hydrogenated castor oil, polyoxyethylene (7) hydrogenated castor oil, polyoxyethylene (10) hydrogenated castor oil Polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (5) octyl dodecyl ether, polyoxyethylene (3) glyceryl monoisostearate, polyoxyethylene (6) glyceryl Monoisostearate, polyoxyethylene (10) glyceryl triisostearate, polyoxyethylene (20)
Glyceryl triisostearate, glyceryl monostearate, glyceryl monooleate, triglycerin diisostearate, sorbitan monooleate, sorbitan monostearate, diglycerin monostearate, diglycerin monostearate, diglycerin distearate, poly Oxyethylene (6) diisostearate, polyoxyethylene (12) diisostearate, polyoxyethylene (2) myristyl ether myristate, polyoxyethylene (3) myristyl ether myristate, polyoxyethylene (5) cetyl Ether stearate, polyoxyethylene (10) cetyl ether stearate and the like. Among these, polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, mono- or polyglycerin fatty acid ester, and polyoxyethylene alkyl ether alkylate are particularly preferable. These may be used alone or in combination of two or more.

The amount of the hydrophobic nonionic surfactant is not particularly limited, but is 0.1 to 40% by weight, preferably 0.5 to 30% by weight, based on the total composition of the cleansing agent for removing makeup cosmetics of the present invention. % By weight is incorporated. If the amount is less than 0.1% by weight, it becomes difficult to prepare a stable preparation,
If it exceeds 0% by weight, the feeling of use becomes heavy, which is not preferable.

[0013] In addition to the above-mentioned essential components, components generally used as cosmetic components can be added to the makeup cosmetic remover according to the present invention, if necessary. Such components include liquid paraffin, squalane, ester oil, diglyceride, triglyceride, dialkylcyclohexane, garbet alcohol, natural animal and vegetable oils, liquid oils such as silicone oil; petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, high-grade Solid or semi-solid oil components such as fatty acids and higher alcohols; alcohols such as ethyl alcohol, isopropyl alcohol, cetyl alcohol, stearics alcohol, palmityl alcohol, hexyl decyl alcohol; water-soluble and oil-soluble polymers; extender pigments, inorganic pigments, Surface treatments of these powders; UV absorbers; UV scattering agents; dandruff, whitening agents, antiperspirants, hair restorers, analgesic anti-inflammatory agents, blood circulation promoters and other medicinal ingredients; anionic surfactants, amphoteric surfactants Surfactants such as cationic surfactants; and water as other additives,
Colorants, fragrances, preservatives, pH adjusters, thickeners, antioxidants, chelating agents and the like can be added in appropriate amounts as long as the effects of the present composition are not impaired.

[0014]

As described above, the cleansing cosmetic composition of the present invention has an excellent O / W in which it has a good permeation into the crevices of the skin, exhibits a high cleaning effect, and has a low oily feeling and excellent use feeling. It is an emulsion type detergent.

[0015]

Next, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples. In addition, all the compounding amounts in the examples are shown by weight%. First, an evaluation method adopted for the cleansing cosmetic of the present invention will be described.

1. Cleansing force effect test method In a constant temperature and humidity room at a temperature of 20 ° C and a humidity of 30%, a fixed amount of lipstick was applied to the inside of the subject's forearm, and 0.03 g of a test sample was added from above. The finger was rubbed with a constant load for 5 seconds, and then wiped lightly with paper. The remaining amount of the lipstick pigment in the crevices was observed with a video microscope, and judged based on the following criteria. Evaluation criteria ：: Very small amount of dye remaining △: Little amount of dye remaining ×: Slightly large amount of dye remaining

2. The feeling of use of the test composition was evaluated based on the number of panelists who felt the sticky feeling of use, after having the feel after application evaluated by 20 panels. The evaluation was made according to the following evaluation criteria. Evaluation criteria ◎: 2 or less felt sticky ○: 2 or more and less than 5 people felt sticky △: 5 or more and less than 10 people felt sticky ×: 10 or less felt sticky More than

Example 1 Prior to the evaluation of cleansing power and feeling of use in an O / W emulsion, the cleansing power of the oily components shown in Table 1 below was evaluated.

[Table 1]

As described above, the cyclic silicone showed relatively excellent cleansing power as the oil component mentioned as a comparative example, but the dialkyl ether, which is one of the components of the present invention, is a pigment component of the lipstick to the skin groove. It can be understood that this is an oily component having the highest cleansing effect with a small residual amount of the oil.

Example 2 According to the composition shown in Table 2, the oily component and the emulsifier were added to a beaker in an amount of 80-85.
Heated to ° C. to dissolve. Next, the oil phase was stirred normally (3
While stirring at 00 rpm), purified water preheated to 80 to 85 ° C was gradually added and emulsified, followed by cooling to room temperature. The obtained O / W emulsion was excellent in cleansing power and had a good feeling of use with little stickiness.

[Table 2]

The cleansing cosmetic of the present invention exhibits a good cleaning effect on the skin crevices of the make-up cosmetic, has a low oily feeling, is excellent in use feeling, and is used as an O / W emulsifying cleansing cosmetic. It was suitable.

The following examples further illustrate the invention by showing conventional preparations for cleansing cosmetics.

[Table 3]

Claims (1)

[Claims] (A) General formula (1): R1-O-R2 (1) (wherein, R1 and R2 are alkyl and / or alkenyl groups each having 6 to 22 carbon atoms). 1) to 80% by weight of the dialkyl ether represented by (B) HL
B having a hydrophilic nonionic surfactant of more than 9 by 0.5 to 5
An O / W emulsifying cleansing cosmetic comprising 0.1 to 40% by weight of a nonionic surfactant having 0% by weight and (C) HLB in the range of 3 to 9.