JPH0655057A - Transparent gel composition - Google Patents

Abstract

PURPOSE:To provide a transparent gel composition using a hardened castor oil fatty acid (12-hydroxy stearic acid) as a gelling agent and being excellent in gelling characteristics in terms of hardness and coating spreading rate. CONSTITUTION:This transparent gel composition consists of the hardened castor oil fatty acid (A), a castor oil ethylene oxide adduct (B) and a castor oil fatty acid ester (C) as essential components. The proportion of each component to the total amount of (A), (B) and (C) are: 2-20wt.% component A (especially 3-10wt.%), 10-90wt.% component B (especially 25-75wt.%) and 3-80wt.% component C (especially 20-70wt.%), respectively. Other oil components excepting these may be contained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gel composition having excellent transparency, which uses hydrogenated castor oil fatty acid (that is, 12-hydroxystearic acid) as a gelling agent.

[0002]

2. Description of the Related Art Oily transparent solid products have been used mainly in the cosmetics field including pomades, hair sticks and lipsticks.

Carnauba wax, wood wax, etc. have been used as raw materials for these products, but in recent years there have been concerns about supply uncertainties due to marked changes in quality and price.

Therefore, there is a demand for a gelling agent that can be stably obtained, and hydrogenated castor oil fatty acid (12-hydroxystearic acid) is being investigated as one of such gelling agents.

For example, JP-A-63-119405 discloses a transparent solid cosmetic containing 12-hydroxystearic acid and a polyhydric alcohol ester side chain fatty acid partial ester of rosin or a polyhydric alcohol unsaturated fatty acid partial ester. Fees are shown.

Japanese Unexamined Patent Publication No. 1-163111 discloses that
-Refractive index of 1.45 consisting of hydroxystearic acid and oil
A transparent base material of up to 1.54 is shown, and as the oil component, liquid oil, silicone oil, solid oil, wax, liquid hydrocarbon oil, solid or semi-solid hydrocarbon oil, higher fatty acid, higher alcohol , Fatty acid ester, POE sorbitan fatty acid ester, POE sorbit fatty acid ester, POE
Glycerin fatty acid ester, POE fatty acid ester, P
An extremely large number of oil components are listed, including OE alkyl ethers, POE alkyl phenyl ethers, POE-POP alkyl ethers, and POE hydrogenated castor oil derivatives (POE is polyoxyethylene, PO
P is polyoxypropylene). It is said that this transparent base material can be used for cosmetics, pharmaceuticals, stationery and the like.

Japanese Unexamined Patent Publication No. 2-264707 discloses 12
A solid cosmetic comprising hydroxystearic acid, heavy liquid isoparaffin and a liquid oily component. The liquid oil component includes olive oil, jojoba oil, squalane, liquid paraffin, octyldodecyl ricinoleate, octyldodecyl myristate, diisostearyl malate, and silicon oil such as methylphenylpolysiloxane.

Japanese Unexamined Patent Publication No. 4-91010 discloses (A) 1
A transparent solid cosmetic composition comprising 2-hydroxystearic acid, (B) a transparent liquid oily component having a hydroxyl value of 120 or less, and (C) methylphenyl polysiloxane is shown.
The transparent liquid oily component having a hydroxyl value of 120 or less includes squalane, liquid paraffin, jojoba oil, octyldodecyl myristate, diisostearyl malate, glycerin fatty acid ester, propylene glycol fatty acid ester and the like.

Japanese Unexamined Patent Publication No. 4-91011 discloses (A) 1
2-Hydroxystearic acid, (B) a transparent liquid oil component having a hydroxyl value of 120 or less, (C) an oleic acid ester of an aliphatic alcohol, and 60% by weight or more of the constituent fatty acids are unsaturated acids having 18 to 20 carbon atoms. Is a component selected from the group consisting of triglycerides, which is a transparent solid cosmetic composition.

[0010]

As described above, various gel compositions using hydrogenated castor oil fatty acid (12-hydroxystearic acid) as a gelling agent are known, but actually, this gelling agent is used. When the oily component is gelled by such a method, there is a problem that the transparency of the gel is not always sufficient, and its solution is strongly desired.

Further, even though these gel compositions can be gelled, when the gel is rubbed on an object, it has a sticky and heavy feeling, or exhibits a polo-like property. In many cases, it has unsuitable properties for applications such as cosmetics where it is applied and stretched.

Under such a background, the present invention provides a gel composition which is transparent and has good gel characteristics (hardness and coating extensibility) using a hardened castor oil fatty acid (12-hydroxystearic acid) as a gelling agent. The purpose is to do.

[0013]

The transparent gel composition of the present invention comprises hydrogenated castor oil fatty acid (A), castor oil ethylene oxide adduct (B) and castor oil fatty acid ester (C) as essential components, and The ratio of the component (A) to the total amount of these (A), (B) and (C) is 2 to 20% by weight, the ratio of the component (B) is 10 to 90% by weight, and the ratio of the component (C) is 3%. ˜80% by weight.

The present invention will be described in detail below.

The transparent gel composition of the present invention contains hydrogenated castor oil fatty acid (A), castor oil ethylene oxide adduct (B) and castor oil fatty acid ester (C) as essential components.

The hydrogenated castor oil fatty acid (A) is obtained by hydrolyzing hydrogenated castor oil obtained by hydrogenating castor oil. It can also be obtained by hydrolyzing castor oil to obtain castor oil fatty acid, and then hydrogenating this.

Castor oil ethylene oxide adduct (B)
Is obtained by adding ethylene oxide to the OH group of castor oil. The number of moles of ethylene oxide added is preferably 3 to 30 moles in consideration of compatibility with other components.

As the castor oil fatty acid ester (C), an ester of castor oil fatty acid and an alcohol or glycol having 1 to 30 carbon atoms is used. In the case of glycol ester, either monoester or diester may be used.

The mixing ratio of the above components is 100% by weight based on the total amount of hydrogenated castor oil fatty acid (A), castor oil ethylene oxide adduct (B) and castor oil fatty acid ester (C).
In this case, the component (A) is 2 to 20% by weight (especially 3 to 10).
10% to 90% by weight of component (B) (especially 25 to 7% by weight)
5% by weight), 3 to 80% by weight of the component (C) (especially 20 to 7%)
0% by weight) is desirable. An insufficient amount of the component (A) impairs gelation property, and an excessive amount thereof impairs transparency. An insufficient amount of the component (B) impairs the gelation property, and an excessive amount thereof impairs the coating spreadability. An insufficient amount of the component (C) impairs the coating spreadability, and an excessive amount thereof impairs the gelation property and the gel strength. When these three components are in the above ranges, a transparent gel composition satisfying all of transparency, gelling property and gel properties (gel strength and coating extensibility) can be obtained for the first time.

As long as the gist of the present invention is not impaired, silicone oil (chain silicone oil such as dimethylpolysiloxane, methylphenylpolysiloxane, etc., octamethylcyclohexyl, etc.) is used together with the components (A), (B) and (C). Cyclic silicone oils such as tetrasiloxane and decamethylcyclopentasiloxane), fatty acid alkyl esters (myristate ester, sebacate ester, adipate ester, arachidic acid ester, etc.), hydrocarbons (liquid paraffin, squalane, etc.), natural oils and fats Various oily components such as the above may be used in combination.

Further, depending on the use of the transparent gel composition, necessary components suitable for the use, such as a solvent, a polyhydric alcohol, a bactericide, a preservative, an ultraviolet absorber, a pigment, a fragrance, a medicinal component, a brightening agent, etc. It can be added as appropriate.

The transparent gel composition of the present invention is a hair cosmetic composition,
It is useful as a transparent base material for cosmetics such as lipsticks, lipsticks, foundation sticks, eyebrow pencils and eyeliner pencils, but it can also be used as a transparent base material for external members such as ointments and other applications.

[0023]

[Function] Castor oil ethylene oxide adduct (B) is used as a castor oil derivative, and this is hardened castor oil fatty acid (A)
Although a preferable gel can be obtained by gelling with (1), it gives a sticky and heavy feeling when applied to an object.
Castor oil fatty acid ester (C) as a castor oil derivative
It is difficult to form a gel even if an attempt is made to gelate it with hydrogenated castor oil fatty acid (A). However, when these (A) component, (B) component and (C) component are used together in a specific ratio (it may be possible to contain other oily components), an extremely transparent gel can be obtained by a simple stirring operation, Moreover, the gel has gel properties that are extremely satisfactory in terms of gel strength, coating extensibility, and the like.

FIG. 1 is a triangular coordinate showing the blending ratio of each of the three components of hydrogenated castor oil fatty acid (A), castor oil ethylene oxide adduct (B) and castor oil fatty acid ester (C). The region X is a range defined by the present invention, and the region Y is a particularly preferable range. In such a region X (more preferably region Y),
A transparent gel composition having the desired properties is obtained.

[0025]

EXAMPLES The present invention will be further described with reference to examples. Hereinafter, “parts” means parts by weight.

<Preparation of Raw Materials> As the hydrogenated castor oil fatty acid (A), the following were prepared. A ₁ : 12-hydroxystearic acid manufactured by Ito Oil Co., Ltd.

The following were prepared as castor oil ethylene oxide adduct (B). B ₁ : castor oil 5 mol ethylene oxide adduct B ₂ : castor oil ethylene oxide 10 mol adduct B ₃ : castor oil ethylene oxide 15 mol adduct B ₄ : castor oil ethylene oxide 30 mol adduct

As castor oil fatty acid ester (C), the following were prepared. C ₁ : Cetylricinoleate C ₂ : Methylricinoleate C ₃ : Octyldodecylricinoleate C ₄ : Propylene glycol monoricinoleate

The following components were prepared as the oily component (D) other than the above components. “Cs” means centistokes, and “cp” means centipoises. D ₁ : Castor oil D ₂ : Isopropyl myristate D ₃ : Dimethylpolysiloxane with a viscosity of 10 cs / 25 ° C. (“SH20 manufactured by Toray Dow Corning Silicone Co., Ltd.”
0-10 ") D _4: Methyl phenyl polysiloxane (Dow Corning Toray Silicone Co., Ltd. of" SH556 ") D _5: liquid paraffin having a viscosity of 70 cp / 25 ° C.

<Evaluation Items and Evaluation Method> Gel Strength The following four grades were used for evaluation. T or P is for the purpose of the present invention. T: Tick, P: Pomade, M: Mayonnaise,
L: Liquid

Transparency test The sample was poured into a glass cell having a layer length of 10 mm, cooled and solidified, and put on a spectrophotometer. The transmittance was measured at a wavelength of 660 nm, and evaluated in the following four stages. ◎: Transmittance 65% or more ○: Transmittance 50% or more and less than 65% △: Transmittance 25% or more and less than 50% ×: Transmittance less than 25%

Feeling (stickiness, spread) Evaluation was made according to the following four grades. ◎: Not sticky and light, extremely good ○: Not so sticky and good △: Feeling slightly sticky ×: Feeling sticky and heavy

<Production of Gel> Example 1 5 g of hydrogenated castor oil fatty acid (A), 47 g of ethylene oxide 5 mol adduct of castor oil and cetyl ricinoleate 4
Take 8g in a 200cc beaker and heat at 100 ° C.
Stir well to make uniform. A part thereof was taken in a glass cell having a layer length of 10 mm, and the rest was cooled to obtain a sample.

Examples 2 to 6 and Comparative Examples 1 to 5 Samples were prepared in accordance with Example 1 using the compounding recipes shown in Table 1 or Table 2 described later.

<Results> The formulations and evaluation results are shown in the following Table 1 (Examples) and Table 2 (Comparative Examples).

[0036]

[Table 1]  Example 1 2 3 4 5 6 Recipe (A) Component A₁ 5 A₁ 5 A₁ 5 A₁ 5 A₁ 5 A₁ 5 (B) Component B₁ 47 B₂ 28 B₃ 76 B₂ 27 B₃ 67 B₂ 76 B_Four 20(C) Component C ₁ 48 C ₁ 67 C ₂ 19 C ₁ 48 C ₃ 28 C ₄ 19 Evaluation Gel strength T P T T T P Transparency ◎ ◎ ○ ◎ ◎ ◎ ○ Feeling ○ ◎ ○ ○ ○ ○

[0037]

[Table 2] Comparative Example 1 2 3 4 5 Formulation (A) Component A ₁ 5 A ₁ 5 A ₁ 5 A ₁ 10 A ₁ 5 (B) Component B ₂ 95 (C) Component C ₂ 95 C ₄ 95 C ₄ 90 ( D) components D ₁ 95 evaluation gel strength L L L M T transparency △ ○ △ × △ feel × ○ △ △ ×

<Production and Results of Gel> Example 7, Comparative Examples 6 to 7 Samples were prepared in accordance with Example 1 using the formulation shown in Table 3. The formulation and results are shown in Table 3. The comprehensive evaluation is an evaluation when the gel strength, transparency, coating extensibility, etc. are comprehensively considered, and is expressed by three grades of ◯, Δ, and ×.

[0039]

[Table 3]

<Production and Results of Gel> Example 8 and Comparative Examples 8 to 9 Samples were prepared according to Example 1 by using the formulation shown in Table 4. The formulation and results are shown in Table 4. The comprehensive evaluation is the same as in Table 3.

[0041]

[Table 4]

<Gel Production and Results> Example 9 and Comparative Examples 10 to 11 Samples were prepared in accordance with Example 1 using the formulation shown in Table 5. The formulation and results are shown in Table 5. The comprehensive evaluation is the same as in Table 3.

[0043]

[Table 5]

[0044]

EFFECTS OF THE INVENTION The transparent gel composition of the present invention has good transparency, smooth coating extensibility without stickiness when rubbed on an object, and good gel strength. It has an excellent effect.

Therefore, the transparent gel composition of the present invention is extremely preferable for applications including transparent base materials for cosmetics.

[Brief description of drawings]

FIG. 1 Hydrogenated castor oil fatty acid (A), castor oil ethylene oxide adduct (B) and castor oil fatty acid ester (C)
It is a triangular coordinate showing the mixing ratio of each component when paying attention to the three components.

[Explanation of symbols]

 X: area defined by the present invention, Y: particularly preferred area

Claims (3)

[Claims] 1. A hydrogenated castor oil fatty acid (A), a castor oil ethylene oxide adduct (B) and a castor oil fatty acid ester.
(C) as an essential component, and (A), (B) and (C)
2 to 20% by weight of the component (A) with respect to the total amount of
A transparent gel composition comprising 10 to 90% by weight of the component (B) and 3 to 80% by weight of the component (C). 2. The (A) to the total amount of (A), (B) and (C)
The proportion of the components is 3 to 10% by weight, and the proportion of the component (B) is 25 to
The transparent gel composition according to claim 1, wherein the ratio of the component (C) is 75% by weight and the ratio of the component (C) is 20 to 70% by weight. 3. The transparent gel composition according to claim 1, which is a transparent base material for cosmetics.