JP2006225458A - Oily cleanser composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oily cleanser composition causing no view cloudiness even in case of accidental contamination into the eyes in its use and good in safety enough to be slight in irritation to the eyes. <P>SOLUTION: The liquid oily skin cleanser composition contains ≥50 mass% of an oil component liquid at room temperature. This cleanser composition is such as to be compounded with 20-40 mass% of a nonionic surfactant with an HLB of 5-16 to ensure the composition to become transparent when 99 weight times of ion-exchange water is added thereto. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an oily cleaning composition, and relates to an oily cleaning composition that has good safety with little eye irritation even when it is mistakenly mixed with eyes during use.

Cleansing compositions can be broadly classified into aqueous cleansing and oil cleansing. As aqueous cleansing, a lotion type composed of a surfactant ethanol aqueous solution, an aqueous gel type obtained by thickening a surfactant with a polymer, and the like are known. . As oil-based cleansing, there are known a cream type in which an O / W emulsion is phase-shifted by massage and exhibits a cleaning function, an oil type comprising a surfactant oil solution, and the like.
Among these, in order to wash off makeup cosmetics containing oil such as lipstick, foundation, mascara, eye shadow, etc., it is most effective to use a detergent containing a lot of oil, and it is a liquid base. Because it has the advantage of being more familiar with makeup cosmetics than other gel and cream bases, liquid oil-based cleaning products, that is, cleansing oils, remove makeup cosmetics. It is often used as a cleaning fee.

  The oil-based detergent is composed of a nonionic surfactant, an oil component, and a small amount of water, and the surfactant forms a reverse micelle oil solution in which an aggregate is formed in the oil with the hydrophilic group inside. Water is solubilized in the vicinity of the gathering of the hydrophilic groups to form one phase, and is completely transparent.

  The oil-based detergent has a limit in its ability to take up water completely and transparently, so-called solubilization amount, because of its microstructure. When water is mixed beyond the solubilized amount, it becomes a coexistence state (two-phase state) with other phases, and thus becomes a white and turbid state as a whole due to the difference in refractive index between the two phases. Depending on the type of coexisting phase, it is not possible to exhibit the cleaning performance and smooth massage properties desired as a cleaning agent, and the cloudy state is not desirable because it strongly impresses consumers with a decrease in performance.

  As what is conventionally known as a liquid oil-based cleaning agent, for example, Patent Document 1 discloses that 3.0 to 35.0% by weight of diethoxyethyl succinate and coconut oil fatty acid polyoxyethylene glyceryl (7EO), respectively, and the oil content. A cleansing material having excellent cleansing power even when the skin is wet is described by combining 5.0 to 35.0% by weight and 0.1 to 10% by weight of a surfactant and purified water.

  Further, in Patent Document 2, a large amount of water can be blended without blending a large amount of surfactant by blending diglyceryl oligoester, it is easy to handle, has excellent cleansing power and feeling of use, and has safety. High cleansing cosmetics are described.

JP 2004-277359 A JP 2004-077554 A

However, since this liquid oil-based cleaning agent is liquid, it is easy to mix into the eyes when washing the eye makeup or during washing with water, and when mixed into the eyes, the oil-based cleaning agent is emulsified with moisture around the eyeball, and the field of vision becomes cloudy. There was a problem. Visibility of the field of vision is caused by the oil in the cleaning material adhering to the periphery of the eyeball, and if it is washed thoroughly with water, it is not a problem in terms of safety. The development of a liquid oil-based cleaning material that does not cause white turbidity has been desired.
Accordingly, the problem to be solved by the present invention is that a liquid oil-based cleaning material having good safety with little eye irritation and no eye irritation even when the eye makeup is washed or mixed with eyes when washed with water. Is to provide.

The present invention is an oil-based cleaning composition containing (a) a liquid oil at room temperature of 50% by mass or more and (b) 20-40% by mass of a nonionic surfactant having an HLB of 5-16, An oil-based cleaning composition having transparency when 99 times the amount of ion-exchanged water is added to the composition.
Here, when 99 times the amount of ion-exchanged water is added to the composition, transparency means that when 99 times the amount of ion-exchanged water is added to the composition, a specializer such as a homogenizer is used. This means that an aqueous solution having transparency can be obtained only by weak stirring at room temperature without applying any external force.

Moreover, this invention is an oil-based cleaning composition containing (a) 50 mass% or more liquid oil at normal temperature, (b) 20-40 mass% of nonionic surfactant whose HLB is 5-16, An oil-based cleaning composition characterized in that when 99 times the amount of ion-exchanged water is added to the composition, it becomes a micellar aqueous phase or a microemulsion phase.
Here, the micelle aqueous solution phase and the microemulsion phase will be described later.

  The liquid oil-based cleaning material according to the present invention has good safety with little eye irritation and no irritation to eyes even when it is mixed with eyes when washing eye makeup or water.

Hereinafter, embodiments of the present invention will be described in detail.
(Normal temperature liquid oil)
The room temperature liquid oil used in the present invention is not limited as long as it is a room temperature liquid oil usually used in cosmetics, and any oil can be used.
Specifically, for example, hydrocarbon oils such as liquid paraffin and squalane, synthetic ester oils such as cetyl 2-ethylhexanoate and glyceryl tri (2-ethylhexanoate), dimethylpolysiloxane, methylphenylpolysiloxane, decamethyl Silicone oil such as cyclopentasiloxane, jojoba oil, macadamia nut oil, olive oil, safflower oil and other vegetable oils can be used. Of these, liquid paraffin, cetyl 2-ethylhexanoate, and glyceryl tri (2-ethylhexanoate) are particularly preferable.

  In the oil-based cleaning composition of the present invention, the normal temperature liquid oil is blended in an amount of 50% by weight or more, preferably 60 to 80% by weight, based on the total amount of the oil-based cleaning composition. If it is less than 50% by mass, familiarity with the make-up will be worsened and the make-up removal effect will be reduced.

(Other oils)
Other oil components used in the oil-based cleaning composition of the present invention are oil components that are solid or semi-solid at room temperature, and specifically include waxes (for example, microcrystalline wax and bead wax), solid oil Type paraffin, hydrogenated oil, beef tallow, owl, beeswax, candelilla wax, carnauba wax, ceresin, petrolatum, lanolin, lanolin derivatives, higher alcohols (eg cetanol, stearyl alcohol), cholesterol, cholesterol derivatives and the like. Note that higher fatty acids or higher alcohols having 10 to 18 carbon atoms described later are not included in the oil.

  The compounding quantity of the whole oil component is 50-85 mass%, Preferably it is 60-80 mass%. If the amount is too small, the makeup-removing effect is lowered. If the amount is too large, the amount of the surfactant is relatively reduced, and the washing-out property is lowered.

(Nonionic surfactant)
The HLB of the nonionic surfactant used in the present invention is in the range of 5-16. When the HLB is lower than 5, it is not preferable because it does not become a transparent aqueous solution when washed with water. Moreover, when HLB is higher than 16, the solubility with respect to oil is very low, and it is difficult to obtain a stable liquid formulation, and satisfactory results cannot be obtained in any case.

  Specific examples of nonionic surfactants having an HLB of 5 to 16 include the chemical composition and approximate values of HLB. Hereinafter, polyoxyethylene is abbreviated as POE.

POE (5) cetyl ether (HLB = 7), POE (5) oleyl ether (HLB = 6), POE (10) oleyl ether (HLB = 10), POE (20) oleyl ether (POE = 14), POE ( 6) Stearyl ether (HLB = 7), POE (5) nonylphenyl ether (HLB = 8), POE (5) octylphenyl ether (HLB = 9), POE (5) lauryl ether (HLB = 9), POE ( 5) Hexyldecyl ether (POE = 7), POE (5) isostearyl ether (HLB = 7), POE (15) isostearyl ether (HLB = 12), POE (10) octyldodecyl ether (HLB = 10), POE (10) decyl pentadecyl ether (HLB = 8), POE (10) behenyl ether (HLB = 9), POE (10) decyl tetradecyl ether (HLB = 9), POE (10) cholesteryl ether (HLB = 9) ), POE (8) dilaurate (HLB = 7), POE (5) monostearate (HLB = 7), POE (6) monoisostearate (HLB = 8), POE (10) monoisostearate (HLB = 11), POE (8) diisostearate (HLB = 5), POE (12) diisos Allate (HLB = 7), POE (6) monooleate (HLB = 8), POE (10) monooleate (HLB = 11), POE (3) glyceryl monoisostearate (HLB = 5), POE (8) glyceryl mono Isostearate (HLB = 9), POE (20) glyceryl triisostearate (HLB = 7), POE (30) glyceryl triisostearate (HLB = 10), POE (8) dioleate (HLB = 5), POE (12) dioleate (HLB = 7), POE (20) glyceryl trioleate (HLB = 7), POE (10) hydrogenated castor oil (HLB = 6), POE (20) hydrogenated castor oil monoisostearate (HLB = 7), POE (30) hydrogenated castor oil triisostearate (HLB = 6), sorbitan monoisostearate (HLB = 9), glyceryl monoisostearate (HLB = 5), diglyceryl monostearate (HLB = 6) ), Decaglyceryl diisostearate (HLB = 10), POE (20) sorbitan monooleate (HLB = 15), POE (40) sorbitan tetraoleate (HLB = 7), etc. Can.
Among these, those classified into polyoxyethylene glyceryl ether monofatty acid ester, polyoxyethylene sorbitan monofatty acid ester, and polyoxyethylene sorbit monofatty acid ester are preferably used.
In the present invention, one or more of these nonionic surfactants can be used in combination.

  In the present invention, the nonionic surfactant having an HLB of 5 to 16 is blended in an amount of 20 to 40% by mass, preferably 20 to 30% by mass, based on the total amount of the oil-based cleaning composition. When the blending amount is less than 15% by mass, a transparent aqueous solution cannot be obtained when water is added, and when the blending amount exceeds 40% by mass, stability problems such as precipitation and separation occur, both of which are satisfactory results. Cannot be obtained.

(C10-18 higher fatty acid or higher alcohol)
In the present invention, the use of a higher fatty acid or higher alcohol having 10 to 18 carbon atoms has the effect of further improving the transparency when a large amount of water is added.
Examples of the higher fatty acid or higher alcohol having 10 to 18 carbon atoms in the molecule include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, oleic acid, lauryl alcohol, myristyl alcohol, cetyl alcohol, Examples include stearyl alcohol, behenyl alcohol, batyl alcohol, isostearyl alcohol, oleyl alcohol, 2-octyldodecanol and the like. Of these, isostearic acid, isostearyl alcohol, and 2-octyldodecanol are particularly preferable.

  When the higher fatty acid or higher alcohol having 10 to 18 carbon atoms is blended, the blending amount is preferably 0.1 to 5% by mass, more preferably 3 to 5% by mass. When the amount is too large, there is a disadvantage that the transparency when a large amount of water is added is lowered.

Next, a method for investigating the state change when water is mixed will be described below.
In order to understand a three-component system consisting of an oil component, water, and a surfactant, a triangle diagram is used. Three types of components are arranged at each vertex of the triangle, and each component has a composition of 100% by mass. The region of the phase obtained by mixing the components is shown on a triangular diagram as a three-component phase diagram. All arbitrary mixing ratios of the respective components are included on the three-component phase diagram. Moreover, what arrange | positioned the mixture at each vertex by the property of a component is a pseudo | simulation ternary system phase diagram.

  The oil-based cleaning composition of the present invention comprises a surfactant and an oil component (one or more types), and a three-component phase diagram is formed by adding water thereto. Here, when a higher fatty acid or a higher alcohol is included, the surfactant and the higher fatty acid or the higher alcohol are regarded as one component, and when two or more kinds of oil are used, the pseudo three-component system A phase diagram can be created.

  The composition of the present invention is a mixture of a surfactant, or a mixture of a surfactant and a higher fatty acid or higher alcohol, and oil is contained in the component or water is added by washing. In the quasi-ternary phase diagram, it slightly moved from the point on the axis connecting the surfactant apex containing liquid fatty acid to the oil apex to the water apex side. On the axis connecting the two). The change in which water is mixed into this corresponds to changing the composition from this point toward the top of the water.

  The condition of the oil-based cleaning composition of the present invention “having transparency when 99 times the amount of ion-exchange water is added to the composition” means “99 times the amount by weight of the composition” "When ion-exchanged water is added, it becomes a micellar aqueous phase or a microemulsion phase".

  In the present invention, “having transparency” means that 1 g of the composition and 99 g of purified water are stirred in a beaker using a magnetic stirrer to form an aqueous solution, then a spectrophotometer (JASCO V-550) and quartz A glass cuvette (T-1-UV10, 10 × 10 × 45 mm manufactured by Tosoh Quartz Co., Ltd.) is used, and the transmittance is 50% or more with respect to purified water when the measurement wavelength is 750 nm.

  The micellar aqueous phase or the microemulsion phase has the following characteristics and can be distinguished. That is, both the micellar aqueous phase and the microemulsion phase are optically isotropic transparent low-viscosity solutions.

  The micelle aqueous solution phase and the microemulsion phase form a continuous state of water, and spherical or rod-like aggregates with the lipophilic group facing inward are dispersed. The size of the aggregate is at most about 100 nm and exhibits an optically isotropic, transparent to slightly bluish translucent appearance. Its composition is the addition of surfactant and oil to water, and the amount of oil solubilized increases according to the amount of surfactant. Therefore, on the phase diagram, the region is from the top of the water toward the center of the phase diagram. Often obtained.

  From these facts, in the present composition, by controlling the types and blending amounts of the surfactant and the oil component, the “micellar aqueous solution phase is obtained when 99 times the amount of ion-exchanged water is added to the composition. Alternatively, it becomes “a microemulsion phase”, which makes it possible to “be transparent when 99 times the amount of ion-exchanged water is added to the composition”. That is, in the state composition diagram, the oil-based cleaning according to the present invention is made by setting the type and amount of the surfactant and the oil-based component so that the water accounts for 99% by mass of the total composition and becomes a micellar aqueous solution or a microemulsion phase. A material composition is obtained.

  Next, the present invention will be described in more detail with reference to examples. Note that the present invention is not limited to this. A compounding quantity represents the mass%.

Example 1
(1) Liquid paraffin 49% by mass
(2) Cetyl 2-ethylhexanoate 20
(3) POE (8) Isostearate (HLB = 9, liquid) 30
(4) Isostearic acid 5
(5) Purified water 1
(6) BHT proper amount (7) perfume proper amount

Example 2
(1) Liquid paraffin 43% by mass
(2) Glyceryl tri-2-ethylhexanoate 20
(3) POE (8) Isostearate (HLB = 9, liquid) 25
(4) POE (20) glyceryl triisostearate (HLB = 7, liquid) 5
(5) Isostearic acid 2
(6) BHT proper amount (7) perfume proper amount

Comparative Example 1
(1) Liquid paraffin 34% by mass
(2) Octyl palmitate 50
(3) POE (30) sorbitan tetraoleate (HLB = 7, liquid) 10
(4) POE (6) sorbitan monooleate (HLB = 7, liquid 5
(5) Purified water 1
(6) BHT proper amount (7) perfume proper amount

Comparative Example 2
(1) Liquid paraffin 62% by mass
(2) Isopropyl palmitate 5
(3) Isododecane 10
(4) POE (12) Monolaurate 15
(5) Isostearic acid 1
(6) Glyceryl monoisostearate 5
(7) Purified water 2
(8) BHT appropriate amount (9) perfume appropriate amount

Comparative Example 3
(1) Liquid paraffin 78% by mass
(2) Cetyl octoate 5
(3) POE (12) diisostearate 10
(4) POE (10) monoisostearate 5
(5) Isostearic acid 1
(7) Purified water 1
(8) BHT appropriate amount (9) perfume appropriate amount

Next, the evaluation method performed in this example will be described.
(1) Transparency evaluation at the time of washing The transparency was evaluated by stirring 1 g of the composition and 99 g of purified water using a magnetic stirrer in a beaker to obtain an aqueous solution, and then using a spectrophotometer (V-550 manufactured by JASCO Corporation). ) And a quartz glass cuvette (T-1-UV10, 10 × 10 × 45 mm, manufactured by Tosoh Quartz). When the transmittance at the measurement wavelength is 750 nm is 50% or more with respect to purified water, it is evaluated as having transparency.
○: The transmittance of the aqueous solution at 750 nm is 50% or more. X: The transmittance of the aqueous solution at 750 nm is less than 50%.

(2) Evaluation of cloudiness of the visual field at the time of face washing Ten professional panelists used 2 g of the composition and massaged the eye area carefully, and then rinsed thoroughly with tap water for 2 minutes. Evaluate the presence or absence of
◎: More than 8 out of 10 responded that there was no cloudy view ○: 6-7 out of 10 responded that there was no clouded view △: 4-5 out of 10 responded that there was no clouded view ×: 3 out of 10 respondents answered that there was no cloudy view

  Moreover, based on the said evaluation criteria, the composition of Examples 1, 2 and Comparative Examples 1-3 was evaluated. The results are shown in Table 1.

  A pseudo three-component phase diagram (water-surfactant (containing active aid) -oil content) using the components of Example 1 is as shown in FIG. From the phase equilibrium diagram, in Example 1, in the range of (a) :( b) = 6: 4 to 7: 3, the micellar aqueous solution phase ( It can be seen that B) is formed.

Examples 3-8, Comparative Examples 4-6
Oil-based cleaning compositions were prepared according to the formulations shown in the following Tables 2-3. The obtained oily cleaning composition was evaluated based on the above evaluation criteria. The results are also shown in Tables 2-3.

It is a figure which shows the pseudo | simulation ternary system phase diagram (water-surfactant-oil content) using the component of Example 1. FIG.

Claims (4)

  (A) 50% by mass or more of a liquid oil at room temperature and (b) an oil-based cleaning composition containing 20 to 40% by mass of a nonionic surfactant having an HLB of 5 to 16, An oil-based cleaning composition having transparency when 99 times the amount of ion-exchanged water is added by weight.   (A) 50% by mass or more of a liquid oil at room temperature and (b) an oil-based cleaning composition containing 20 to 40% by mass of a nonionic surfactant having an HLB of 5 to 16, An oil-based cleaning composition, which becomes a micellar aqueous phase or a microemulsion phase when 99 times the amount of ion-exchanged water is added.   The oil-based cleaning composition according to claim 1 or 2, further comprising (c) 0.1 to 5% by mass of a higher fatty acid and / or a higher alcohol having 10 to 18 carbon atoms.   (B) The nonionic surfactant having an HLB of 5 to 16 is selected from polyoxyethylene glyceryl ether monofatty acid ester, polyoxyethylene sorbitan monofatty acid ester, and polyoxyethylene sorbit monofatty acid ester. Item 4. The oil-based cleaning composition according to any one of Items 1 to 3.

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