JP4634030B2 - Viscous aqueous composition - Google Patents

Description

  The present invention relates to a viscous aqueous composition that can be suitably used for cosmetics and the like, and more particularly to a viscous aqueous composition that is highly transparent and excellent in storage stability and use feeling.

  In water-based viscous compositions that can be used in cosmetics, quasi-drugs, pharmaceuticals, etc., various viscosifiers can be used because high viscosity is obtained with a small amount of blending and excellent transparency and usability. Synthetic polymers have been used, but on the other hand, synthetic polymers having a thickening property have a disadvantage that they are weak against ions and salts, resulting in a decrease in viscosity. For this reason, in the field of cosmetics and the like, various studies have been made on the production of water-based viscous compositions that do not substantially use synthetic polymers, such as using various thickening natural polymers.

  However, when an attempt is made to produce a viscous aqueous composition having an appropriate viscosity according to the purpose using only a natural polymer without using a synthetic polymer, turbidity and stickiness occur, and storage stability is poor. There were problems such as. In addition, when trying to obtain a high-viscosity composition that is used only for natural polymers, for example, in gels and packs, the amount of natural polymer added increases, resulting in turbid appearance, stickiness during use, stringing and stickiness. There was a tendency to occur or the film became brittle.

  The present invention has been developed in view of such problems, and is a viscous aqueous system that can obtain a desired viscosity while suppressing the amount of addition of a polymer, has high transparency, and is excellent in storage stability and usability. An object is to provide a composition.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, surprisingly, a synthetic compound having thickening properties can be obtained by blending two specific natural polymers known as thickening agents in the composition. A water-based viscous composition having a desired viscosity can be obtained with only a very small amount of a natural polymer without substantially using a polymer, and the composition is highly transparent and excellent in storage stability and use feeling. As a result, the present invention has been completed.

  That is, the viscous aqueous composition of the present invention is characterized by containing locust bean gum and xanthan gum as essential components.

  In this invention, it is preferable that the total content rate of locust bean gum and xanthan gum is 0.006 or more and 3.5 mass% or less with respect to the composition whole quantity by mass ratio.

  In one embodiment of the present invention, the total content of locust bean gum and xanthan gum is 0.006 to less than 0.1% by mass with respect to the total amount of the composition, and the viscosity at 25 ° C. is 200 mPa · s to 5000 mPa · s. It is a viscous aqueous composition that is less than

  Moreover, in another aspect, the viscous water system whose total content rate of locust bean gum and xanthan gum is 0.1-1.5 mass% with respect to the composition whole quantity, and the viscosity in 25 degreeC is 5000-140000 mPa * s. It is a composition.

  Furthermore, in another aspect, the pack agent is produced using a viscous aqueous composition in which the total content of locust bean gum and xanthan gum is 0.5 to 3% by mass relative to the total amount of the composition.

  In the present invention, the content of locust bean gum is preferably 0.003 to 3% by mass relative to the total amount of the composition, and the content of xanthan gum is 0.003 to the total amount of the composition. It is preferable that it is 3 mass%.

  Moreover, in this invention, it is preferable that the compounding ratio of locust bean gum and xanthan gum is mass ratio and is locust bean gum: xanthan gum = 1: 99-99: 1.

  Furthermore, in this invention, it is preferable to contain further polyhydric alcohol and / or dipotassium glycyrrhizinate.

  According to the present invention, it is possible to provide a viscous aqueous composition having a desired viscosity while suppressing the addition amount of a polymer, having high transparency, and excellent in storage stability and use feeling. It was.

  The viscous aqueous composition of the present invention has two new natural polymers known as thickeners, locust bean gum and xanthan gum, and thus has a new effect that cannot be obtained by using each independently. It has been completed by paying attention to the occurrence, and is characterized by containing locust bean gum and xanthan gum as essential components.

  That is, when locust bean gum is used without using xanthan gum as a thickener, the viscosity increases and turbidity occurs when left for a long time at room temperature. On the other hand, when xanthan gum is used without using locust bean gum, there is a stringiness and stickiness unique to xanthan gum, and it is difficult to obtain a high viscosity. Both locust bean gum and xanthan gum are contained in the composition. By containing it in water, an aqueous viscous composition having a desired viscosity can be obtained in an extremely small amount of locust bean gum and xanthan gum while suppressing this problem. Since the water-based viscous composition of the present invention contains a small amount of polymer, it is excellent in transparency, high-temperature stability, and feeling of use, is difficult to release water, has excellent storage stability, is flexible and breaks down during use. Hateful.

  Thus, in the present invention, the amount of the polymer compound is extremely small. In the viscous water-based composition of the present invention, the total blending ratio of locust bean gum and xanthan gum contained as essential components can be appropriately set according to the use and the like described later, but is usually 0.006 based on the total amount of the composition. It is -3.5 mass%, and the desired viscosity can be obtained in this range. More specifically, for example, when the viscous water-based composition of the present invention is used as a lotion, the total blending ratio of locust bean gum and xanthan gum may be 0.006% by mass or more and less than 0.1% by mass. In this case, a viscous aqueous composition having a viscosity of usually 200 mPa · s or more and less than 5000 mPa · s can be obtained. Moreover, when using as a cosmetic liquid, it is preferable that a total compounding ratio is 0.1-1.5 mass%, In this case, the viscous aqueous composition which usually has a viscosity of 5000-14000 mPa * s is obtained. Can do. Moreover, when using as a pack, it is preferable that a total compounding rate is 0.5-3 mass%, In this case, the viscous aqueous composition which has a viscosity of 140000 mPa or more normally can be obtained. Use only one of locust bean gum or xanthan gum to obtain the same level of viscosity as the viscous aqueous composition of the present invention. The feeling and transparency are much worse.

  In the viscous water-based composition of the present invention, the preferred blending ratio of locust bean gum and xanthan gum can be appropriately set according to the use to be described later, but is usually 0.003 to 3% by mass with respect to the total amount of the composition. is there. When the blending ratio is less than 0.003% by mass, the temporal stability at high temperatures may be deteriorated. On the other hand, when it exceeds 3% by mass, the feeling in use may be impaired. More specifically, for example, when the viscous water-based composition of the present invention is used as a lotion, the blending ratio is 0.003 to 0.05% by mass, respectively, and when used as a cosmetic liquid, 0.01 to 1% by mass. %, When used as a pack, 0.05 to 3% by mass is preferable.

  Further, in the viscous aqueous composition of the present invention, the blending ratio of locust bean gum and xanthan gum can be appropriately set according to the use to be described later, but is usually a mass ratio, locust bean gum: xanthan gum = 1: 99- 99: 1. If the blending amount of locust bean gum is excessive relative to this blending ratio, the feeling of use tends to be impaired, which is not preferable. On the other hand, when the amount of xanthan gum is excessive, there may be a problem in viscosity stability at high temperatures, which is not preferable. More specifically, for example, when the viscous water-based composition of the present invention is used as a lotion or a cosmetic liquid, the blending ratio of locust bean gum and xanthan gum is 1:99 to 99: 1, respectively, and when used as a pack, respectively. 1: 49-49: 1 is preferred.

  In the present invention, it is preferable to add a polyhydric alcohol in addition to the essential components because the effects of the present invention that are achieved by combining locust bean gum and xanthan gum become more remarkable. That is, by including polyhydric alcohol, locust bean gum and xanthan gum and polyhydric alcohol interact to increase the viscosity of the system, thereby improving the temporal stability of the viscous aqueous composition according to the present invention. This can be further improved. The polyhydric alcohol that can be used is not particularly limited. For example, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, glycerin, diglycerin, polyglycerin, Isoprene glycol, 1,3-butylene glycol and the like can be mentioned, and one kind of polyhydric alcohol can be used alone, or two or more kinds can be used in appropriate combination. Among these, propylene glycol, glycerin, and 1,3-butylene glycol can be preferably used.

  A preferable blending ratio of the polyhydric alcohol is, in mass ratio, the total of locust bean gum and xanthan gum: polyhydric alcohol = 1: 100 to 10: 1, more preferably 1:80 to 2: 1. When the total blending ratio of locust bean gum and xanthan gum is excessive relative to this blending ratio, stability with time may be impaired, whereas when the blending ratio of polyhydric alcohol is excessive, transparency and feeling of use are deteriorated. In some cases, it is not preferable.

  Moreover, in this invention, in addition to the said essential component, it is preferable to mix | blend dipotassium glycyrrhizinate since the effect of this invention show | played by combining locust bean gum and xanthan gum becomes further remarkable. That is, by containing dipotassium glycyrrhizinate, the high temperature stability of the viscous aqueous composition according to the present invention can be further improved. A preferable blending ratio of dipotassium glycyrrhizinate is, by mass ratio, the total of locust bean gum and xanthan gum: dipotassium glycyrrhizinate = 1: 10 to 100: 1, more preferably 1: 5 to 30: 1. If the total blending ratio of locust bean gum and xanthan gum is excessive relative to this blending ratio, it may be difficult to obtain the effect of improving the intended high-temperature stability, whereas dipotassium glycyrrhizinate When the blending ratio is excessive, transparency and usability may be deteriorated, which is not preferable. The effect produced by using dipotassium glycyrrhizinate is even more pronounced when used in combination with polyhydric alcohols.

  The viscous water-based composition of the present invention can be suitably used for cosmetics, pharmaceuticals, quasi drugs, etc., and the form and dosage form are not particularly limited. For example, it is used for lotions, emulsions, creams, packs, etc. Is possible.

  The viscous aqueous composition of the present invention can use a known thickening synthetic polymer within a range that does not impair the stability to ions and salts. Moreover, it is possible to mix | blend with the viscous water-based composition of this invention the other component which can be normally mix | blended in field | areas, such as cosmetics and a pharmaceutical, in the range which does not impair the effect of this invention.

(Example)
EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, the technical scope of this invention is not limited to these. In addition, all the compounding ratios of the composition shown below are the mass%.

(Example 1) Gel cosmetics Gel cosmetics were produced by stirring all ingredients for 30 minutes with a stirrer at the blending ratios shown in Table 1, and the viscosity stability test and sensory sensory test were conducted for each test product. went. The evaluation method is as follows.

[Viscosity stability test]
Each test article was allowed to stand at 25 ° C. and 45 ° C., and measured with a B-type viscosity type (rotor: No. 6, rotation speed: 10, measurement time: 30 seconds).

[Sense of use sensory test]
Each test product was evaluated for spinnability, film property, stickiness, and transparency.
Threading property: Evaluated based on whether or not there is stringing. In the case where there was no stringing, it was evaluated as ◯, when there was a little, △, and when there was.
Film property: Evaluated based on whether or not there was anything that popped out when rubbed after drying.
Stickiness: Evaluation was made based on whether or not there was stickiness, and “◯” was given when there was no stickiness, “△” when there was a little stickiness, and “X” when sticky.
Transparency: Evaluated by visual sensation. In the case of transparency, it was evaluated as “◯”, when it was slightly cloudy, “Δ”, and when cloudy, “X”.

The results are shown in Tables 2-4.

The viscosities in Table 2 are the results measured at 25 ° C. In the table, Comparative Examples 1 to 4 are examples in which the same amount of polymer was added as in Examples 1, 4 and 7 of the present invention, and Comparative Examples 5 to 7 are examples of Inventive Examples 1, 4 and 7. In this example, a high molecular weight is added so that a viscosity close to the viscosity can be obtained.

The viscosities in Table 3 are the results measured at room temperature. From this, it was found that the viscosity stability was further improved by adding polyhydric alcohol (concentrated glycerin) without impairing the feeling of use.

  The viscosities in Table 4 are the results measured at 45 ° C. From this, it was found that by containing dipotassium glycyrrhizinate, viscosity stability at high temperature is further improved without impairing the feeling of use. It has also been found that the effect is further improved when dipotassium glycyrrhizinate and concentrated glycerin are contained together. Moreover, in Comparative Example 3 and Comparative Example 8 using a carboxyvinyl polymer, it was found that the viscosity of Comparative Example 8 further containing dipotassium glycyrrhizinate was lower.

(Example 2) Packed cosmetics Packed cosmetics were produced by stirring all the components with a stirrer for 30 minutes at the blending ratios shown in Table 5, and a sensory test was performed on each test product. The evaluation method is as follows.

[Sense of use sensory test]
Each test product was evaluated for breakage, adhesion, storage stability, transparency, and flexibility during use.
Breakage during use: Evaluation was made based on whether or not a breakage occurred when the test product was lifted, and it was rated as ◯ when no breakage occurred, Δ when it occurred slightly, and x when it occurred.
Adhesiveness: The adhesiveness between the skin and the test product when the test product was placed on the skin was evaluated. When the adhesion was good, it was evaluated as ◯, when it was a little bad, and when it was poor, it was rated as x.
Storage stability: The stability of a test product after storage at 25 ° C. for 1 month was evaluated. The stability was evaluated as “good”, “small” as “bad”, and “bad” as bad.
Transparency: Evaluated by visual sensation. In the case of transparency, it was evaluated as “◯”, when it was slightly cloudy, “Δ”, and when cloudy, “X”.

Flexibility: An evaluation was made based on whether or not a crack occurred when the test product was bent. The evaluation was ◯ when no crack occurred, Δ when slightly cracked, and x when crack occurred immediately.

The results are shown in Table 6.

  From the results of Table 6, it was found that the present invention has a small amount of polymer added and is excellent in each evaluation, and the effect becomes particularly remarkable when the viscosity is high.

(Example 3)
Below, prescription of the gel cosmetic liquid and the pack agent according to the present invention is shown. In any case, each of the above evaluations regarding the sensory test for use was “good”, and the viscosity stability over time was excellent.

(3-1) Gel serum

  The components (1) to (6) and (11) were heated and dissolved at 70 ° C. using a stirrer and then cooled. After cooling, the components (7) to (10) were added to obtain a gel cosmetic liquid.

(3-2) Packing agent

  Each component of (1) to (6) and (10) is heated and dissolved at 70 ° C. using a stirrer and then cooled, and each component of (7) to (9) is added at 40 ° C. The mixture was cooled and solidified to obtain a pack agent.

Claims (8)

Locust bean gum, a viscous aqueous composition containing xanthan gum and dipotassium glycyrrhizinate, locust bean gum and xanthan gum in total content of Ru 0.006 to 3.5% by mass of the total amount of the composition, viscosity Water based composition. The viscous water-based composition of Claim 1 whose content rate of locust bean gum is 0.003-3 mass% with respect to the composition whole quantity. The viscous water-based composition of Claim 1 or 2 whose content rate of a xanthan gum is 0.003-3 mass% with respect to the composition whole quantity. A viscous aqueous composition containing locust bean gum, xanthan gum and dipotassium glycyrrhizinate, wherein the total content of locust bean gum and xanthan gum is 0.006% by mass or more and less than 0.1% by mass with respect to the total amount of the composition and a viscosity of Ru der less than 200 mPa · s or more 5000 mPa · s at 25 ° C., viscous aqueous composition. A viscous aqueous composition containing locust bean gum, xanthan gum and dipotassium glycyrrhizinate, wherein the total content of locust bean gum and xanthan gum is 0.1 to 1.5% by mass relative to the total composition, and 25 viscosity at ℃ is Ru 5000~140000mPa · s der, viscous aqueous composition. The viscous aqueous composition according to any one of claims 1 to 5 , wherein a mixing ratio of locust bean gum and xanthan gum is a mass ratio of locust bean gum: xanthan gum = 1: 99 to 99: 1. The viscous aqueous composition according to any one of claims 1 to 6 , further comprising a polyhydric alcohol. Locust bean gum, a viscous aqueous composition containing xanthan gum and dipotassium glycyrrhizinate, locust bean gum and xanthan gum in total content of viscous aqueous composition Ru 0.5 to 3% by mass relative to the total amount of the composition Packing agent manufactured using products.