JP2001011486A - Oily composition, skin external preparation and detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a composition that has a little greasy feel and is excellent in emulsion stability when the composition is added to water to be self- emulsified by blending a polar oil and a nonionic surfactant in a specified ratio. SOLUTION: The composition is produced by blending 40-99.5 wt.%, based on the composition, polar oil and 0.5-60 wt.%, based thereon, nonionic surfactant represented by the formula. In the formula, each of R1, R2 and R3 represents independently H or a 16-22C branched fatty acid residue, with the proviso that all of R1, R2 and R3 cannot be H at the same time; a, b and c are each independently an integer of not less than 1; and a+b+c is 10 to 30. As a polar oil, a rapeseed oil is particularly preferable. As a nonionic surfactant, a polyoxyethylene isostearate hardened castor oil is preferable, and one having an HLB of 4-7 is particularly preferable. The composition is used in a hair cosmetic, a skin cosmetic, a bath agent, a skin external preparation such as an ointment or the like, a detergent composition or the like such as a makeup remover, a face wash, a hair shampoo, a body shampoo or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an oily composition, more specifically, a composition in which the content of a polar oil (component (A)) is 40 to 99.5% by weight based on the composition, and a specific nonionic surface activity The amount of the agent (component (B)) is 0.5 to the composition.
The present invention relates to a 60% by weight self-emulsifying oily composition, and a skin external preparation and a detergent composition containing the oily substance. The self-emulsifying oily composition of the present invention has a low stickiness, is excellent in emulsification stability when self-emulsifying in addition to water, and the skin external preparation of the present invention has a low stickiness. Further, the cleaning composition of the present invention is a cleaning composition having a low stickiness, excellent cleaning performance for oily stains, and excellent cleaning performance for highly polar dyes.

[0002]

[Prior art]

A self-emulsifying type oily composition can be obtained by forming a fine emulsion without the need for mechanical stirring when a composition mainly composed of an oily raw material is poured into water. Is known to be useful, for example, it is possible to emulsify a large amount of water. In these self-emulsifying oily compositions, non-polar oils such as liquid paraffin are commonly used for the form stability of the composition,
These non-polar oils have problems such as having a sticky feeling to the skin.

As a method of reducing stickiness, it is known to use a polar oil such as an ester oil, but it is difficult to uniformly emulsify the polar oil. As a method for improving emulsification, Japanese Patent Application Laid-Open No. 11-35421 discloses a method in which a specific nonionic surfactant is used in combination with a fatty acid and the like, and a mixture of a polar oil and a nonpolar oil is used. However, there is still a problem that scum generated by contact with tap water has a squeaky feeling, impairs usability, and is sticky due to containing non-polar oil. Also, Japanese Patent Application Laid-Open
JP-A-2525123 and JP-A-11-116462 disclose bath agents in which only polar oils are emulsified, but these have a good emulsification state of the composition itself.
There was a problem that the emulsion stability after self-emulsification in addition to water was insufficient, and the polar oil was separated during bathing.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a self-emulsifying type oily composition having a low stickiness and excellent emulsification stability when self-emulsifying in addition to water and a skin external preparation having a low stickiness. Another object of the present invention is to provide a detergent composition having a low sticky feeling and an excellent detergency for oil stains.

[0006]

Means for Solving the Problems The present inventor has conducted intensive studies in view of the above-mentioned circumstances, and as a result, it has been found that one or two or more kinds (component (A)) selected from polar oils are contained in the composition in an amount of 40 to 99.
5% by weight, one or more selected from specific nonionic surfactants (component (B)) in an amount of 0.5% to the composition.
It has been found that the above object can be achieved by containing the compound in an amount of from about 60% by weight to complete the present invention.

That is, in the present invention, one or more kinds (component (A)) selected from polar oils are added to the composition in an amount of 40 to 9%.
9.5% by weight, 0.5 to 60% by weight of the composition containing one or more kinds (component (B)) selected from the nonionic surfactants represented by the following general formula (1) The present invention relates to a self-emulsifying oily composition, and an external preparation for skin and a detergent composition containing the oily composition.

[0008]

Embedded image

[R1, R2 and R3 each independently represent hydrogen or a branched fatty acid residue having 16 to 22 carbon atoms. Where R1, R
2, R3 does not become hydrogen at the same time. a, b, and c are each independently an integer of 1 or more, and a + b + c is 10 to 30. ]

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

The polar oil of the component (A) used in the present invention includes rapeseed oil, olive oil, synthetic ester oil and the like. Of these, rapeseed oil and olive oil are vegetable raw materials and are preferred in terms of oxidative stability, and rapeseed oil is particularly preferred in terms of cold resistance, light resistance and heat stability. Examples of commercially available rapeseed oil include "Pure Light Oil" (manufactured by Ajinomoto Co., Inc.). These may be used alone or in combination of two or more.

The nonionic surfactant of component (B) used in the present invention includes polyoxyethylene hydrogenated castor oil isostearate, polyoxyethylene hydrogenated castor triisostearate, and polyoxyethylene hydrogenated castor oil octadecylate. Particularly preferred is polyoxyethylene hydrogenated castor oil isostearate. Also, HLB is 4 ~
No. 7 is preferable in terms of handling because a liquid composition is obtained at 25 ° C., and polyoxyethylene isocyanate hardened castor oil having an HLB of 4 to 7 is particularly preferable. These may be used alone or in combination of two or more. HL
When it is B4 or less or 8 or more, emulsification dispersibility and stability are poor, and oil floating occurs.

The compounding amount of the polar oil which is the component (A) of the present invention is 40 to 99.5% by weight with respect to the self-emulsifying type oily composition. ~ 9
0% by weight, especially 60-80% by weight
It is preferable that If it is less than 40%, the degree of opacity at the time of self-emulsification is low, and if it exceeds 99.5%, the compounding amount of the nonionic surfactant is small and stable emulsification is difficult.

The compounding amount of the nonionic surfactant which is the component (B) of the present invention is 0.5 to 0.5 to the self-emulsifying oily composition.
60% by weight, preferably 10 to 30% by weight, particularly preferably 15 to 25% by weight.
If it is less than 0.5% by weight or more than 60% by weight, good emulsion stability cannot be obtained.

From the viewpoint of obtaining a high degree of whiteness when self-emulsifying, the ratio of component (A) to component (B) is preferably A / B = 2/1 to 6/1 by weight, and 7 / 2-9 / 2 is particularly preferred.

The self-emulsifying oily composition of the present invention can be used for skin external preparations, detergent compositions and the like.

The amount of the self-emulsifying oily composition of the present invention used in the external preparation for skin of the present invention is appropriately selected depending on the form and is not particularly limited. For example, when the composition is used for an emulsion, it is usually added to the whole emulsion. When used in a bath agent, it can be used in an amount of 10 to 80% by weight, usually 10 to 100% by weight based on the total amount of the bath agent.

Examples of the skin external preparation of the present invention include hair cosmetics such as rinses and styling agents, skin cosmetics such as emulsions and serums, bath agents, ointments and the like.

The amount of the self-emulsifying oily composition of the present invention to be used in the cleaning composition of the present invention is appropriately selected depending on the form and is not particularly limited. 100% by weight can be used.

Examples of the detergent composition of the present invention include makeup remover, face wash, hair shampoo, body shampoo and the like.

In the emulsified composition, the external preparation for skin and the cleansing composition of the present invention, various additives usually used can be added as long as the effects of the present invention are not impaired. Examples include surfactants, non-polar oils, silicone compounds, polymeric substances, alcohols, polyhydric alcohols, extracts, amino acids, nucleic acids, vitamins, enzymes, anti-inflammatory agents, bactericides, preservatives, antioxidants, Standards for cosmetic raw materials such as ultraviolet absorbers, chelating agents, antiperspirants, oxidation dyes, acid dyes, pigments, pH adjusters, pearlizing agents, wetting agents, etc. And non-Japanese Pharmacopoeia standards, and raw materials described in the official food additives.

[0022]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

<Example 1, Example 2, Example 3> Preparation of one-layer type self-emulsifying type oily composition An oily composition having the composition shown in Table 1 was prepared, and a one-layer type oily composition liquid at 25 ° C was prepared. Obtained. Components other than water are heated and mixed and stirred until uniform, and water is added thereto to obtain a self-emulsifying composition until uniform.

[0024]

[Table 1]

Example 4 Preparation of Two-Layer Type Self-Emulsifying Oil Composition An oil composition having the composition shown in Table 1 was prepared in the same manner to obtain a two-layer oil composition.

<Test Example 1> Examples 1 to 4 and Comparative Examples 1 to
The oily composition prepared in 3 was subjected to a sensory evaluation as a bath agent by five expert panelists. The evaluation method was as follows: 200 L of hot water at 40 ° C. was put into a bathtub, and about 20 g of a sample was added. The mixture was lightly stirred by hand and then bathed. The evaluation items were (a) moist feeling, (b) sticky feeling, and (c) Dispersibility,
(D) Stability of the emulsified state and (e) Milkyness of the emulsified state were set to 5 points. Table 1 also shows the evaluation results.

In the evaluation, the average value was calculated according to the following criteria. If the average value was less than 1.5, the evaluation was good (（).
The case of 1.5 to 2.4 was evaluated as slightly good (△), and the case of 2.5 or more was evaluated as poor (×).

<Moist feeling> 1: Very moist. 2: Slightly moist. 3: Not moist.

<Stickiness> 1: No stickiness. 2: Slightly sticky. 3: Very sticky.

<Emulsified Dispersibility> 1: Disperse promptly. 2: Difficult to disperse. 3: No dispersion.

<Stability of emulsified state> 1: No oil floating. 2: There is some oil floating. 3: There is considerable oil floating.

<Emulsion Whiteness> 1: High 2: Normal 3: Low

<Test Example 2> Examples 1 to 3 and Comparative Example 1
With respect to the oily composition prepared in 2, sensory evaluation as makeup removal was performed by five expert panelists. The evaluation was performed by applying lipstick to hands and drying it after about 10 minutes. Next, 0.5 ml of a test sample was applied thereon, allowed to blend with the lipstick, and then rinsed off with lukewarm water. The evaluation items were (f) ease of lifting of the makeup when applied and (g) stickiness when washed off. Table 1 also shows the evaluation results.

In the evaluation, the average value was calculated according to the following criteria. When the average value was less than 1.5, the evaluation was good (○).
The case of 1.5 to 2.4 was evaluated as slightly good (△), and the case of 2.5 or more was evaluated as poor (×).

<Ease of make-up when blended in> 1: Makeup easily falls off. 2: Makeup is easy to fall off. 3: Makeup does not easily fall off.

<Stickiness when washed off> 1: No stickiness. 2: Slightly sticky. 3: Very sticky.

[0037]

According to the present invention, a self-emulsifying oily composition having a low stickiness and excellent emulsification stability when self-emulsifying in addition to water, an external preparation with a low stickiness, and a sticky feeling are provided. It is possible to obtain a detergent composition having a small amount of oil stains and an excellent detergency.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) C11B 5/00 C11B 5/00 C11D 1/74 C11D 1/74 3/382 3/382 F term (reference) 4C083 AA121 AA122 AC022 AC122 AC431 AC432 BB04 CC02 CC23 DD31 4H003 AC12 DA02 DB02 EB05 EB09 ED02 FA21 FA37 4H059 BA33 BA34 BB02 BB06 BB07 BC13 CA51 DA24 EA01 EA11

Claims (4)

[Claims] (1) one or more kinds of polar oils (A) are present in an amount of 40 to 99.5% by weight based on the composition of a nonionic surfactant represented by the following general formula (1): One or more selected (B) is 0.5 to
A self-emulsifying oily composition characterized by containing 60% by weight. Embedded image [R1, R2 and R3 each independently represent hydrogen or a branched fatty acid residue having 16 to 22 carbon atoms. However, R1, R2 and R3 are not simultaneously hydrogen. a, b, and c are each independently an integer of 1 or more, and a + b + c is 10 to 30. ] 2. The oily composition according to claim 1, wherein the polar oil is rapeseed oil. 3. An external preparation for skin containing the oily composition according to claim 1 or 2. 4. A detergent composition comprising the oily composition according to claim 1 or 2.