JPS624364B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for producing a solubilizing bath agent, and in particular, when a solvent containing a mixture of vegetable oil and liquid paraffin, etc. is added to bath water, it can be easily The present invention relates to a method for producing an oil-based solubilizing bath agent that emulsifies and disperses, maintains the emulsified and dispersed state over time after being added, and provides emulsion stability.

[Conventional technology]

The present applicant previously proposed JP-A-54-2333 ``Production method of solubilizing bath agent''. According to this patent application, 2
% to 20% squalane, 30% to 65% liquid paraffin, 10% to 30% isopropyl myristate, 10% to 16% polyoxyethylene sorbitane diolate, and appropriate amounts of pigments, fragrances, and active ingredients. A method for producing a solubilizing bath agent has been disclosed, which involves filling soft capsules with a solution containing the following. Here, squalane, liquid paraffin, and isopropyl myristate are all liquid at room temperature and are easy to handle. Squalane and liquid paraffin are mainly used for the fatliquing effect of penetrating oil into the skin, and isopropyl myristate is It is used for the purpose of improving the miscibility of these oils and fats and enhancing the fatliquing effect. By adding this squalane, in addition to further increasing the skin protection effect, polyoxyethylene sorbitan diol, which was previously used to emulsify and disperse liquid paraffin, isopropyl myristate, etc. in bath water, was added. Polyoxyethylene sorbitan diolate 1 is obtained by omitting the polyoxyethylene lauryl ether phosphate sodium salt from the two surfactants: polyoxyethylene lauryl ether phosphate and sodium polyoxyethylene lauryl ether phosphate.
Seeds can now be emulsified and dispersed.

In addition, as a recent trend, various vegetable oils and fats have been widely applied because they have beautifying and medicinal effects.

[Problem that the invention seeks to solve]

However, according to the conventional manufacturing method of solubilizing bath additives, when several types of vegetable oils and fats are added to the bath additive raw materials,
Although it was dispersed in a hot water bath, the emulsified dispersion was not stable over time, and the oil components tended to separate after about 30 minutes after adding the bath additive. Therefore, unlike squalane and liquid paraffin, which only have a fattening effect, the addition of several types of vegetable oils and fats has the advantage of providing skin beautification and medicinal effects to bathers. By adding, in bath water,
If emulsion dispersibility and emulsion stability cannot be obtained,
The oil will separate and leave the milk, giving the bather a sticky and unpleasant feeling, and the advantages of the bath will not be utilized and the product value will be lost.

[Means and actions for solving problems]

The present invention was proposed in view of the above problems, and because several types of vegetable oils and fats were added to the bath agent raw materials, emulsion dispersibility and emulsion stability in bath water could not be obtained and the oil separated. We selected two types of surfactants with different HLB values, polyoxyethylene sorbitan monooleate and polyoxyethylene sorbitan triolate, and examined their weight ratio. After that, we mixed it with other bath agent raw materials to prepare a stock solution, poured it into bath water, and studied how to emulsify and disperse it.As a result, we found that the content of polyoxyethylene sorbitan monooleate (A) was as follows:
Content of polyoxyethylene sorbitan triolate (B) and content of isopropyl myristate (C)
is expressed as the following two formulas in weight% based on the total amount of bath agent: 20≦(A)+(B)≦30...(1) 10≦(C)≦45...(2) and (A) and ( If you use a solution that simultaneously satisfies the following equation showing the weight ratio of B): 7/3≦(B)/(A)≦17/3...(3), it can be easily emulsified and dispersed in bath water. They found that the emulsification was stable over time. In other words, by selecting the blending conditions of two types of surfactants with different HLB values and isopropyl myristate, a stronger emulsifying power can be obtained than when using only one type of polyoxyethylene sorbitane diolate, and this bath additive can be added to the bath water. It became easier to control the emulsification and dispersion inside.

In addition, since polyoxyethylene sorbitan monooleate and polyoxyethylene triolate are certified as raw materials for cosmetics, they are easily available as raw materials for formulation, and it has become possible to use this bath agent for other uses such as cosmetics.

In the present invention, the components contained in the bath agent are vegetable oil, squalane, liquid paraffin, isopropyl myristate, polyoxyethylene sorbitan monooleate, polyoxyethylene triolate, fragrance, and color.

Vegetable oils include jojoba oil, olive oil,
Coix barley oil and vitamin E are used, and jojoba oil is a liquid wax containing monohydric alcohol ester of unsaturated fatty acids obtained from the seeds of shrubs.
Excellent chemical stability and skin absorption.
Olive oil, a vegetable oil containing a lot of oleic acid, has excellent chemical stability and contains vitamins E, A, and D. Coix oil has metabolic effects and wart removal effects, and vitamin E has the effect of preventing oxidation of oils and fats. The above oils and fats penetrate the skin of the bather and bring about medicinal effects, skin beautifying effects, and fat-liquifying effects. In addition, squalane is a hydrocarbon reduction product obtained from shark liver oil and similarly has a fatliquifying effect and has particularly excellent skin permeability, while liquid paraffin has a skin protective effect. Isopropyl myristate has low viscosity and has the effect of improving miscibility between oil and fat components, and when combined with a surfactant, improves emulsifying and dispersing properties.

From the above, the obtained bath agent stock solution was mixed with gelatin 100 with a jelly strength of 150 to 250 bloom.
A material containing 30% to 45% glycerin is filled into soft capsules obtained by adjusting the viscosity to 20,000 CPS at 60°C.

〔Example〕

Hereinafter, the conditions for blending the solubilizing bath agent of the present invention will be explained in detail based on experiments and examples leading to the blending of raw materials of the present invention.

First, using two representative surfactants, polyoxyethylene sorbitan monooleate (content: (A)) and polyoxyethylene sorbitan triolate (content: (B)), 1977-
Based on the compounding conditions of 2333, we investigated the weight ratio of the two types of surfactants and found that the weight ratio (B)/(A) was 7/3~
At 17/3, the solvent raw material became transparent and had good emulsifying and dispersing properties in hot water. On the other hand, when (B)/(A) was 17/3 or more, the bath agent stock solution became transparent, but when dispersed in hot water, oil floated on the surface of the hot water, and (B)/(A) 7/3
In the following cases, the bath agent stock solution either did not become transparent or required a large amount of surfactant to become transparent.
Therefore, the mixing ratio of (B)/(A) was determined to be 7/3 to 17/3.

Second, the above-obtained ingredients are added to the raw materials for this bath additive.
Add a surfactant mixture of (B)/(A) = 7/3 to 17/3, and the blending conditions are basically 2 to 10% of oils and fats (vegetable oil, squalane) and liquid paraffin.
As a result of experiments in which the amounts of isopropyl myristate (hereinafter referred to as IPM) and surfactant mixture (hereinafter referred to as mixed liquid) were mutually varied from 40 to 55%, the results shown in Figures 1 to 55% were as follows. As shown in Figure 12,
This will be explained below. In addition, if the blended bath agent stock solution does not become transparent, the commercial value will be lost.
Emulsification and dispersion tests were not conducted in bath water. In addition, in the emulsification and dispersion test, approximately 2 ml of the bath agent stock solution was
The emulsion was added to 700 c.c. of water at ℃ and observed for 30 minutes to confirm the stability of the emulsified state.

When IPM≦10, when 0<(A)+(B)<45, the stock solution separates (Fig. 1), and when 45≦(A)+(B)≦50, it does not emulsify and disperse (Fig. 2).

When 10<IPM≦20, emulsification and dispersion is good when 20<(A)+(B)<30 (Fig. 3), and when (A)+(B)≦20, the stock solution is separated (Fig. 4). , (A)+(B)≧30, emulsification and dispersion did not occur (Figure 5).

When 20<IPM≦45, emulsification and dispersion is good when 20<(A)+(B)<30 (Fig. 6), and when (A)+(B)≦20, emulsification and dispersion is not achieved (Fig. 7). , (A)+(B)≧30, emulsification and dispersion did not occur (Figure 8).

When 45<IPM<50 (A)+(B)<10, the stock solution is opaque (Figure 9) and 10
When ≦(A)+(B)<40, emulsification and dispersion will not occur (Figure 10),
When (A)+(B)≧40, the stock solution was opaque (Figure 11).

From the above, as shown in Figure 12, the total amount of the two types of surfactants is 20% to 30%, and isopropyl myritate is 10% to 45%, and the weight ratio of the surfactants is When is from 7/3 to 17/3,
It was confirmed that the bath agent stock solution became transparent, that good emulsification and dispersion occurred when it was poured into bath water, and that the emulsion state was stable over time.

Hereinafter, the method of the present invention will be explained in detail with reference to Examples.
The method of the present invention is not limited in any way by these Examples. In the examples, "parts" represent parts by weight, and the amount of vegetable oils and fats represents the total amount of jojoba oil, olive oil, pearl barley oil, and vitamin E.

Example 1 Vegetable oil 1.6 parts squalane 3 parts liquid paraffin 45.2 parts isopropyl myristate 19 parts polyoxyethylene sorbitan monooleate
6.8 parts polyoxyethylene sorbitan triolate
20.4 parts Fragrance 4 parts Color 0.005 part Example 2 Vegetable oil 1.6 parts Squalane 3 parts Liquid paraffin 41.2 parts Isopropyl myristate 23 parts Polyoxyethylene sorbitan monooleate
6.8 parts polyoxyethylene sorbitan triolate
20.4 parts Fragrance 4 parts Color 0.005 part [Effects of the Invention] As explained above, the solubilizing bath agent of the present invention easily emulsifies and disperses in bath water and maintains a stable emulsified state over time. Since it can be maintained for a long time, there is no sticky discomfort, and it can provide a beautifying effect, a medicinal effect, and a fat-liquifying effect to the bathing quality.

In addition, two types of surfactants, polyoxyethylene sorbitan monooleate and polyoxyethylene sorbitan triolate, are easily available as raw materials for cosmetics, so costs can be reduced, and this bath additive can also be used as a cosmetic product. be.

[Brief explanation of the drawing]

Figure 1 shows the bath agent stock solution separated into two phases, Figure 2 shows the bath agent stock solution separated and floating on the water surface, and Figure 3 shows the bath agent stock solution separated into two phases. Figure 4 shows the state where the bath agent stock solution has separated into two phases, Figure 5 shows the state where the bath agent stock solution is separated and floated on the water surface, and Figure 6 shows the state where the bath agent stock solution is separated into two phases. Figure 7 shows the state in which the bath agent concentrate separates and floats on the water surface. Figure 8 shows the state in which the bath agent concentrate floats on the water surface.
The figure shows the undiluted bath agent separated and floated on the water surface. Figure 9 shows the undiluted bath agent (right side) is opaque. Figure 10 shows the undiluted bath agent separated and floated on the water surface. Figure 11 is a diagram showing the state where the bath agent stock solution (right side) is opaque, Figure 12 is a diagram showing the state.
A graph showing the behavior of bath additives depending on the blending amounts of IPM and surfactant.

Claims (1)

[Claims] 1 Vegetable oil, squalane and liquid paraffin that have a fatliquing effect, isopropyl myristate that increases the compatibility between the oil and fat, and polyoxyethylene sorbitan monooleate and polyoxy as surfactants. Consisting of ethylene sorbitan triolate, fragrance, and pigment, and the content of the polyoxyethylene sorbitan monooleate (A), the content of the polyoxyethylene sorbitan triolate (B), and the content of the isopropyl myristate. (C) is % by weight based on the total amount of bath agent, and the following 2 formulas,
That is, 20≦(A)+(B)≦30...(1) 10≦(C)≦45...(2) and the following formula showing the weight ratio of (A) and (B), namely, 7 A method for producing a solubilizing bath agent, which comprises filling soft capsules with a solution that simultaneously satisfies the following: /3≦(B)/(A)≦17/3 (3).