JP7222897B2 - oily detergent - Google Patents

Description

TECHNICAL FIELD The present invention relates to an oil-based cleanser that does not become cloudy or thicken even when mixed with water and exhibits excellent cleansing effects.

BACKGROUND ART So-called cleansing oils are widely used as oil-based detergents for washing off oil-containing makeup cosmetics such as lipsticks, foundations, mascara, and eye shadows.

Cleansing oils are usually based on a large amount of oil and a small amount of nonionic surfactants. When using, first blend the cleansing oil into the make-up cosmetic, and then wash off the make-up cosmetic together with the cleansing oil with water. Since it is washed by hand, it is often used in the washroom or bathroom.

However, when water is mixed in the cleansing oil, the mixed water does not dissolve, and a phenomenon such as separation into two layers and cloudiness or thickening occurs. The cloudiness of the cleansing oil leads to a decrease in the cleansing effect of the makeup cosmetic because the surfactant is localized at the interface between the two layers. is likely to be difficult. For this reason, users need to be careful not to use cleansing oil with wet hands or on a wet face such as after washing hair in a bathroom. I didn't.

Therefore, there is a demand for the development of an oil-based cleanser that does not become cloudy or thickened even when mixed with water, and that can exhibit excellent cleansing effects even when the user uses it with wet hands.

Japanese Patent Application Laid-Open No. 2014-152108

An object of the present invention is to provide an oil-based cleanser that does not become cloudy or thickened even when mixed with water, and that exhibits excellent cleansing effects even when the user uses it with wet hands. do.

As a result of studies by the present inventors to solve the above problems, (A) a nonionic surfactant with HLB 9 to 16, (B) liquid oil, (C) propylene glycol laurate, and (D) Polyoxypropylene (17) glycol, polyoxyethylene (8) glycol, polyoxybutylene (9) polyoxypropylene (1) glycol, polyoxyethylene (14) polyoxypropylene (7) dimethyl ether, or polyoxyethylene (17 ) polyoxypropylene (4) 1 to 2 % by mass of dimethyl ether, it does not become cloudy or thickened even when water is mixed, and exhibits excellent cleaning effect. was completed.

That is, the present invention provides (A) a nonionic surfactant with HLB 9 to 16, (B) liquid oil, (C) propylene glycol laurate, (D) polyoxypropylene (17) glycol, polyoxyethylene (8 ) glycol, polyoxybutylene (9) polyoxypropylene (1) glycol, polyoxyethylene (14) polyoxypropylene (7) dimethyl ether, or polyoxyethylene (17) polyoxypropylene (4) dimethyl ether 1 to 2 mass % and is an oil-based cleanser characterized by containing

The oil-based cleanser of the present invention does not become cloudy or thickened even when mixed with water, and can provide an excellent cleansing effect even when the user uses it with wet hands.

The oily cleanser of the present invention is characterized by containing (A) a nonionic surfactant having an HLB of 9 to 16, (B) liquid oil, and (C) propylene glycol laurate.

(A) Nonionic surfactants with HLB of 9 to 16 are not particularly limited as long as they can be usually blended in cosmetics. ) hexadecyl ether (HLB=10), POE (20) glyceryl isostearate (HLB=14), POE (8) glyceryl monoisostearate (HLB=12), POE (40) glyceryl triisostearate (HLB = 11), POE (30) glyceryl trioleate (HLB = 10), POE (10) monoisostearate (HLB = 12), POE (30) hydrogenated castor oil (HLB = 11), POE (50) hydrogenated castor Examples include oil monoisostearate (HLB=12), POE (60) hydrogenated castor oil triisostearate (HLB=10), sorbitan monoisostearate (HLB=9), and particularly POE (8) glyceryl monoisostearate (HLB=9). Stearates are preferred.

When the HLB of the nonionic surfactant is less than 9, it becomes cloudy due to contamination with water, and when the HLB exceeds 16, it becomes difficult to obtain a uniform composition.

(B) The liquid oil is not particularly limited as long as it is a liquid oil commonly used in cosmetics. Examples include liquid paraffin, squalane, olefin oligomers, hydrocarbon oils such as light isoparaffin, 2-ethyl Hexanoic acid triglyceride, cetyl 2-ethylhexanoate, pentaerythritol 2-ethylhexanoate, trimethylolpropane 2-ethylhexanoate, 2-ethylhexyl palmitate, isocetyl isononanoate, isopropyl myristate, cetyl octanoate, tripropylene dineopentanoate Ester oils such as polyglycol, natural vegetable oils such as jojoba oil, olive oil, macadamia nut oil, cottonseed oil, tea seed oil, safflower oil, rice bran oil, decamethylpentacyclosiloxane, octamethyltetracyclosiloxane, dimethylsiloxane, methylphenyl Examples include silicone oils such as siloxane, and preferably liquid paraffin, cetyl 2-ethylhexanoate, decamethylpentasiloxane, and the like can be used.

When (C) propylene glycol laurate is added to the oil-based cleanser, the state of the oil-based cleanser can be stably maintained for a long period of time at high temperatures. In addition, it is possible to effectively suppress an increase in viscosity and generation of cloudiness caused by contamination of water. The HLB value of propylene glycol laurate is 5.

It is preferable that (D) polyalkylene glycol or polyoxyethylene/polyoxypropylene dimethyl ether is further blended in the oily detergent of the present invention. By blending such a polyalkylene glycol or the like, it is possible to remarkably suppress the increase in viscosity and generation of cloudiness due to contamination with water, thereby improving the detergency of the make-up cosmetic. As polyalkylene glycol, polyethylene glycol, polypropylene glycol, and polybutylene glycol can be blended. As the polyoxyethylene/polyoxypropylene dimethyl ether, POE (14) POP (7) dimethyl ether, POE (17) POP (4) dimethyl ether, etc., which are polyoxyethylene polyoxypropylene random copolymer dimethyl ethers, can be blended. can.

In addition to the above-mentioned essential ingredients, the oil-based detergent of the present invention may contain one or more of other ingredients commonly used in cosmetics and pharmaceuticals as long as they do not impair the effects of the present invention. For example, oil-based detergents may contain components that are commonly used in detergent compositions. Specific examples are given below, but are not limited to these.

As powder components, titanium dioxide, mica, talc, etc. can be blended. In addition, as ultraviolet absorbers, benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid, anthranil-based ultraviolet absorbers such as homomenthyl-7N-acetylanthranilate, benzoyl-based ultraviolet absorbers such as butylmethoxybenzoylmethane, and octyl cinnamate. , Cinnamic acid-based UV absorbers such as glyceryl di-paramethoxycinnamate-mono-2-ethylhexanoate, salicylate-based UV absorbers such as amyl salicylate, and benzophenone-based UV absorbers such as 2,4-dihydroxybenzophenone are blended. be able to.

As moisturizing agents, polyethylene glycol, glycerin, sorbitol, xylitol, maltitol, mucopolysaccharides, hyaluronic acid, chondroitin sulfate, chitosan and the like can be blended. As a thickening agent, methyl cellulose, ethyl cellulose, gum arabic, polyvinyl alcohol, montmorillonite, laponite, etc. can be blended. Ethanol, 1,3-butylene glycol, etc. can be blended as an organic solvent.

Antioxidants such as butylhydroxytoluene, tocopherol, phytic acid, etc., and antibacterial preservatives such as benzoic acid, salicylic acid, sorbic acid, parahydroxybenzoic acid alkyl esters (ethylparaben, butylparaben, etc.), hexachlorophene, etc. can be added. can.

As other ingredients, pigments, fragrances, purified water, and the like can be appropriately blended.

EXAMPLES The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the present invention. In addition, the numerical value in a table|surface shows the mass % unless otherwise indicated.

An oil-based cleanser was prepared by a conventional method and evaluated for "stability", "make-up removal" and "rinsability".

"Stability" was evaluated according to the following criteria with respect to the presence or absence of haze or haze based on the appearance after being left for 3 days at a high temperature of 50°C and a low temperature of 0°C.

Evaluation criteria for "stability" ○: Transparent (accepted)
×: Occurrence of haze and fog (failed)

"Make-up removal" is the surface of artificial leather that has been evenly coated with liquid foundation, and a tissue paper soaked with 0.2 g of an oil-based cleaning agent, and then reciprocates 20 times while applying a weight of 300 g. It was evaluated visually.

Evaluation criteria for “makeup removal” ◎: Excellent (accepted)
○: Excellent (passed)
△: Slightly inferior (failed)
×: Inferior (failed)

"Ease of rinsing" was determined by sensory evaluation of the time required for the feeling of sliminess to disappear after applying 3 g of an oil-based cleanser to the entire face, letting it absorb well, and then rinsing with water.

Evaluation criteria for “ease of rinsing” ◎: Excellent (pass)
○: Excellent (passed)
△: Slightly inferior (failed)
×: Inferior (failed)

Oil-based detergents may increase in viscosity or become cloudy when mixed with water. When the viscosity increases, it becomes difficult for the oil-based cleanser to blend in with makeup. In addition, in the cloudy cleanser, the surfactant, which is a cleansing ingredient, is less likely to bond with the make-up, which tends to reduce the make-up removing effect. Therefore, the viscosity, transparency, and make-up removal when mixed with water were evaluated.

The "viscosity when mixed with water" is measured by adding water to the oil-based detergent so that the blending ratio of the oil-based detergent:water is 7:3, mixing by inversion, and then adding 40 g of the mixed liquid. It was filled in a 50 ml glass bottle, measured at a temperature of 30° C. using a BL type No. 3 rotor (rotation speed 12 rpm), and then evaluated according to the following criteria. The viscosity of the oil-based detergent before water is mixed is about 40 mPa·s (BL type No. 1 rotor rotation speed 60 rpm). It is preferable that the increase in viscosity of the oil-based detergent due to contamination with water is as small as possible. As an evaluation criterion, a viscosity of 3500 mPa·s or less when mixed with water was used as a criterion for acceptance.

Evaluation criteria for "viscosity when mixed with water" ◎: 1500 mPa s or less (accepted)
○: 1500 to 3500mPa・s (Pass)
△: 3500-6000mPa・s (failed)
×: 6000 mPa・s~ (failed)

"Transparency when mixed with water" is measured by adding water to the oil-based detergent so that the blending ratio of the oil-based detergent and water is 7:3, mixing by inversion, and then checking the appearance of the mixture. Evaluation was made according to the following criteria.

Evaluation criteria for “transparency when mixed with water” ◎: Transparent (accepted)
○: pale (passed)
△: Slightly cloudy (failed)
×: Cloudy (failed)

“Makeup removal when water is mixed” is to apply 0.2 g of oil-based detergent and 0.09 g of water (mixing ratio of oil-based detergent and water to about 7:3) on the upper surface of artificial leather evenly coated with liquid foundation. (equivalent)), and after 20 reciprocations while applying a load of 300 g, the condition of the liquid foundation remaining was visually evaluated.

Evaluation criteria for “make-up removal when mixed with water” ◎: Excellent (accepted)
○: Excellent (passed)
△: Slightly inferior (failed)
×: Inferior (failed)

As shown in Table 1, in Examples 1 to 4 in which POE (8) glyceryl monoisostearate and propylene glycol laurate were blended, good results were obtained in all evaluation items.

As shown in Table 2, good results were obtained in Examples 5 and 11 in which POE (8) glyceryl monoisostearate and propylene glycol laurate were blended. It was possible to obtain good evaluation results (Examples 6 to 10, 12 and 13).

Furthermore, from the results of Examples 6, 7, 14 to 21 in Table 3, evaluation was made not only by polypropylene glycol but also by blending polyalkylene glycol such as polyethylene glycol and polybutylene glycol or polyoxyethylene/polyoxypropylene dimethyl ether. was confirmed to improve.

Claims (1)

(A) a nonionic surfactant with HLB 9-16;
(B) a liquid oil,
(C) propylene glycol laurate;
(D) polyoxypropylene (17) glycol, polyoxyethylene (8) glycol, polyoxybutylene (9) polyoxypropylene (1) glycol, polyoxyethylene (14) polyoxypropylene (7) dimethyl ether, or polyoxy Ethylene (17) polyoxypropylene (4) dimethyl ether 1 to 2 % by mass,
An oily detergent characterized by containing