JP2002080896A - Transparent bar soap composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent bar soap composition without causing a defect such as damaging its transparency due to the white muddiness or the like resulting from a keeping state, and damaging usability due to the sodden or the like resulting from absorbing water upon its use. SOLUTION: The transparent bar soap composition comprises compounding sodium chloride into components which constitute the soap composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a transparent solid soap composition containing sodium chloride.

[0002]

2. Description of the Related Art Conventionally, a transparent solid soap composition has been produced through the following steps. First, beef tallow, coconut oil, palm kernel oil, animal and vegetable oils and fats such as castor oil or their fatty acids,
A lower alcohol such as methanol, ethanol and isopropyl alcohol and water are mixed, and an alkaline aqueous solution such as sodium hydroxide and potassium hydroxide is poured into the mixture to saponify fats and oils or neutralize fatty acids. Next, a polyhydric alcohol such as glycerin or propylene glycol or sugar is added to and dissolved therein, and further, if necessary, a fragrance, a dye, etc. are added, and the mixture is poured into a predetermined frame, cooled, solidified, cut out, and cut. . Thereafter, the product is aged by aging for about two months until the water content becomes constant.

[0003] The conventional transparent solid soap composition obtained by such a process has transparency, good lathering, the lathering is creamy, and a moist washing state is obtained. The properties are good.

[0004]

However, when used for a long period of time in a state of being housed in a highly sealed container, the surface of the transparent solid soap composition becomes cloudy,
There are drawbacks such as absorption of moisture and swelling during use. Such a defect causes the commercial value and usability of the transparent solid soap composition to be greatly impaired.

In the present invention, therefore, the above-mentioned disadvantages are solved and the transparency is impaired due to clouding or the like depending on the storage condition, or the usability is impaired due to swelling due to absorption of water during use. It is an object of the present invention to provide a transparent solid soap composition which does not have any disadvantages.

[0006]

Means for Solving the Problems In order to achieve the above-mentioned object, the transparent solid soap composition of the present invention is characterized in that sodium chloride is blended in the components constituting the transparent solid soap.

In the above-mentioned transparent solid soap composition of the present invention, good transparency can be obtained by blending sodium chloride, and even when stored for a long period of time, especially when stored tightly, its transparency can be improved. Is kept in a stable state, and does not cause troubles such as dandruff which impairs usability during water addition.

[0008] The amount of sodium chloride which can provide favorable properties of the above-mentioned transparent solid soap composition is in the range of 0.1 to 1.0% by weight based on the whole composition. When the amount of the sodium chloride is less than 0.1% by weight, the sealed storage performance becomes insufficient, and 1.0% by weight.
When it exceeds, the transparency may be reduced.

[0009] As the components constituting the transparent bar soap, those which have been used as the components constituting the conventional transparent bar soap can be used.

For example, besides water, animal and vegetable fats and oils such as beef tallow, coconut oil, palm kernel oil, castor oil and the like, or mixed fats and oils, lauric acid, myristic acid, palmitic acid, stearic acid,
Fatty acids such as oleic acid or mixed fatty acids thereof, saponifying or neutralizing agents such as caustic soda and caustic potash, clarifying agents such as modified lower alcohols such as methanol, ethanol, isopropyl alcohol and geraniol denatured alcohols, higher alcohols and sugars, sucrose, It contains saccharides such as sorbitol, polyhydric alcohols such as glycerin, diglycerin, and propylene glycol for increasing the hygroscopicity of soap, and other optional components such as edetates, flavors, and coloring agents.

The components constituting such a transparent bar soap can be mixed according to a conventional general method for producing a framed soap. That is, a lower alcohol and water are heated to 45 to 55 ° C. and mixed with the fat or oil or its fatty acid, and an alkaline aqueous solution is poured into this mixture to saponify the fat or oil or neutralize the fatty acid. Next, a polyhydric alcohol or sugar is added and dissolved therein, and further, if necessary, an arbitrary component such as a fragrance or a pigment is added, and the mixture is poured into a predetermined frame, solidified by cooling, cut out, and cut. Then, it can be commercialized by aging it until it reaches a certain water content. It is preferable that the above-mentioned sodium chloride is added to the above-mentioned mixture at the final stage of the above-mentioned production process.
In this case, sodium chloride may be added in the form of a powder, but may be mixed with an aqueous solution thereof.

[0012] The amount of the components constituting these transparent bar soaps is preferably 20 to 4%.
0% by weight, 12 to 22% by weight of a lower alcohol, 5 to 15% by weight of a saccharide, and 5 to 20% by weight of a polyhydric alcohol. When the amount of each component is within the above range, a transparent solid soap excellent in transparency, hardness, usability and the like can be obtained.

[0013]

Examples (Examples 1 to 5, Comparative Example 1)

[0014]

[Table 1]

In a mixture of the amounts shown in Table 1 and heated to 55 ° C., a mixed fatty acid of lauric acid, myristic acid, palmitic acid, stearic acid and oleic acid, geraniol-modified alcohol and trisodium edetate were added. , (70
%) Sorbitol, glycerin, and diglycerin are mixed and dissolved to form a homogeneous mixture. Next, a (48%) aqueous solution of sodium hydroxide and (47%) potassium hydroxide were added to the mixture, and the mixture was neutralized with stirring. Sugar and sodium chloride were further added to the neutralized mixture and mixed with stirring. This is poured into a predetermined frame, which is cooled and solidified. After the frame is cut, the solidified product is cut and aged for about 2 months until the total content of volatile components becomes about 21% by weight. Type
Transparent solid soaps were obtained respectively.

In this transparent bar soap, the one containing 0.05% by weight of sodium chloride was prepared in Example 1,
0.1% by weight in Example 2, 0.3% by weight in Example 3, 0.5% by weight in Example 4, and 0.7% by weight in Example 5, 1.0% by weight
The sample of Example 6 and the sample of Example 7 were 1.2% by weight.

For each of the samples of Examples 1 to 7,
Table 2 shows the performance of transparency, foaming property and hardness, results of the closed storage test, friction solubility, dissolution rate and oozing width.

[0018]

[Table 2]

In Table 2, the transparency was judged by visual observation according to the following criteria. When the film had uniform transparency, it was evaluated as ○, when turbidity occurred but was very slight, Δ, and when turbidity occurred.

The hardness is measured with a card meter (Iio Electric Co., Ltd.)
Was measured at 25 ° C by applying a load of 800 g to a needle thickness of 1 mmφ.

The foaming property is determined by measuring the entire surface of the sample by 28 to 32.
Wet lightly with warm water adjusted to a temperature of ° C. The transparent bar soap is wrapped with both hands and rubbed 20 to 30 times to form a foam. When the bubbling state at this time is good,
When it was slightly good, it was evaluated as poor, and when it was poor, it was evaluated as x.

The closed storage test was performed according to the following method. First, a sample is foamed by the same operation as in the case of foaming.
Next, the foam on the sample surface is lightly washed off with water. After the water was drained a few more times, it was stored in the tray 1.
The test was performed twice a day in the morning and evening, five days each week, for a total of 40 days.

The tray 1 comprises a receiver 2 and a sealing lid 7, as shown in FIG. Water 3 is spread thinly in the receiver 2. The receiving tray 2 is provided with the receiving tray 2 in a state where the receiving tray 4 is supported by the peripheral edge portion. At the bottom of the pan 4,
A through hole 5 and a support protrusion 6 are provided. The sample is well supported by the supporting projections 6 while being well humidified by the water 3 through the through-holes 5 and accommodated in the tray 1 sealed by the sealing lid 7.

The container 1 containing the sample as described above was stored for 40 days in a room under the environmental conditions of a room temperature of 30 ° C. and a humidity of 70% RH. During this time, the room was controlled by a ventilation fan or the like so that the above-mentioned environmental conditions were maintained. The room temperature is 10 ° C or less, or the humidity is 50% RH.
In the following cases, hot water or normal temperature water was stored in the indoor bathtub to control the room.

Forty days after the start of the storage, the presence or absence of cloudiness on the sample surface and the state of swelling were determined by visual observation according to the following criteria. That is, when there was no change on the surface of the sample, 僅 か when only slight swelling occurred, △ when very slight turbidity occurred, and × when swelling and turbidity occurred.

The degree of penetration was determined by measuring the degree of penetration of the sample after the above-mentioned closed storage test using a rheometer (NRM-2002Y, manufactured by Fudo Kogyo Co., Ltd.) with a needle of 5 mmφ and a needle insertion speed. 5cm / min, chart speed 10cm / min, full scale 2kg
The measurement was performed as follows. That is, as shown in FIG. 2, for the needle force-time × chart speed characteristic curve a appearing in the chart, the time from the origin to the inflection point s × the length α of the chart speed was defined as the blur width.

The friction solubility was measured according to JIS K-3304.
Followed.

The dissolution rate was determined by attaching a sample whose weight had been measured in advance to the tip of a wire, immersing it in water at 20 ° C., taking it out of the water one hour later and measuring its weight. Calculated. Elution rate (%) = 100 × (W ₁ −W ₂ ) / W ₁ W ₁ : Weight of sample before immersion (g), W ₂ : Weight of sample after immersion (g) For components shown in Table 1, A transparent bar soap was produced in the same manner as in Example 1 except that sodium chloride was used, and this was used as a sample of Comparative Example 1.

The same test as in Example 1 was conducted on the sample of Comparative Example 1 for various properties such as transparency, and the results are shown in Table 3.

[0030]

[Table 3]

The methods for measuring various properties shown in Table 3 were performed in the same manner as in Examples 1 to 5.

From the results shown in Table 2, the samples of Examples 1 to 7 were all tested in the closed storage test.
It can be seen that the transparency at the beginning of the production can be kept almost in a good state, the width of the swelling at the time of adding water can be reduced, and the defects caused by the swelling can be eliminated. It can be seen that the performance of the closed storage test is based on the effect of the sodium chloride compound in comparison with the sample of Comparative Example 1 shown in Table 3.

Further, from the results in Table 2, it can be seen from the above-mentioned Example 1
The performance of each of the samples No. to No. 7 after closed storage tends to increase as the blending amount of sodium chloride increases, and this also increases the hardness value of each sample in production in proportion. It can be seen that this large hardness value is maintained even after the sealed storage, and reduces the friction solubility and the dissolution rate with the reduction in the width of the swelling. However, the reduction in the frictional solubility and the dissolution rate does not impair the cleaning performance of the samples of Examples 1 to 7, since the foaming properties are all well maintained.

As described above, the performance in the closed storage test is in proportion to the amount of sodium chloride contained in the sample, so that the performance of the closed storage test can be maintained in a good state by the amount of sodium chloride. , Hardness, frictional solubility and dissolution rate can be adjusted. Table 2
From the results of the sample of Example 1, when the compounding amount of sodium chloride is an amount exceeding 0.05% by weight of the whole components,
In the case of the sample of Example 7, transparency and foaming tend to be inferior in the production of the sample of Example 7 because the performance in the closed storage test is good. It can also be seen that if the content is less than 0.2% by weight, there is no adverse effect on the transparency and foaming property during production. As a result, the amount of sodium chloride
It is preferable that the content is in the range of 0.1 to 1.0% by weight of the whole components, and it can be seen that a transparent solid soap composition excellent in various properties can be obtained with the compounding amount in this range. Further, it can be seen that the amount of sodium chloride is particularly preferably in the range of 0.5 to 1.0% by weight, since the performance of the closed storage test is particularly good.

(Example 8, Comparative Examples 2 to 4)

[0036]

[Table 4]

A transparent solid soap composition was produced using the components and amounts of the fatty acids shown in Table 4 as soap components and the aging period of about 2 months according to the production steps in accordance with Examples 1 to 5. In this case, as shown in Table 5, a metal chloride containing sodium chloride as a component was used as a sample of Example 8, and potassium chloride, magnesium chloride hexahydrate and calcium chloride dihydrate were used as components. Comparative Example 2
~ 4 samples.

[0038]

[Table 5]

Table 5 shows the performance of the samples of Example 8 and Comparative Examples 2 to 4 as to the friction solubility, elution rate and ooze width as a result of the transparency, foaming and hardness closed storage tests. About the measuring method of various performance of Table 5, etc.,
It carried out similarly to the method mentioned above.

From the results shown in Table 5, the sample of Example 8 is excellent in all of the above-mentioned performances, whereas the sample of Comparative Example 2 is insufficient in the performance particularly regarding the degree of swelling. It can be seen that the samples of Comparative Examples 3 and 4 have insufficient transparency, in particular. From this, it can be seen that when sodium chloride is used as a component among the metal chlorides, a very good transparent soap composition can be obtained.

(Example 9, Comparative Examples 5 to 6)

[0042]

[Table 6]

A transparent solid soap composition was produced using the components and amounts shown in Table 6 in which the fats and oils were used as the soap component according to the following production steps. That is, a mixture of the respective components is poured into a cylindrical pipe (70 mmΦ) to be solidified, and the solidified product is cut into a predetermined size. Next, the cut product is aged so that the total volatile content is 24% by weight and the weight is 100 g. This was shaped to obtain a sample of the transparent solid soap composition. In this case, as shown in Table 7, a sample containing sodium chloride as a component was used as a sample of Example 9, and a sample containing no sodium chloride was used as a sample of Comparative Examples 5 to 6.

[0044]

[Table 7]

Table 5 shows the performance of the samples of Example 9 and Comparative Examples 5 to 6 in terms of transparency, foaming property and hardness, as a result of a closed storage test, friction solubility, elution rate and wiping width. About the measuring method of various performances of Table 7, etc.,
It carried out similarly to the method mentioned above.

From the results shown in Table 7, it can be seen that in the case of the sample of Example 9 containing 0.4% by weight of sodium chloride, even if the water content at the end of ripening was a relatively high value, various performances were obtained. It can be seen that good quality can be obtained. The superiority of this performance is apparent by comparison with Comparative Example 5. Therefore, the ripening period can be shortened, and the production can be performed more economically. The sample of Comparative Example 6 was aged for a long period of time to reduce the water content at the end of aging,
The quality relating to various performances can be obtained as equivalent to that of the sample of Example 9, but the aging period becomes very long, and thus it is not practical in terms of economy.

[0047]

As described above, since the present invention is constituted, the following effects are exhibited. According to the transparent solid soap composition of the present invention, since the performance of the sealed storage test can be maintained in a good state without impairing the transparency and foaming property at the time of production, the surface of the soap after the sealed storage can be maintained. It is possible to effectively prevent adverse effects due to dandruff, white turbidity, and the like.

The fact that the performance in the closed storage test is maintained in a good state increases the commercial value of the transparent solid soap composition in that the transparent appearance is maintained even during use. In addition, the usability can be improved in that the dandruff can be eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a tray containing a transparent bar soap composition of the present invention used in a closed storage test.

FIG. 2 is a needle force-time × chart speed characteristic diagram showing a measured value of a soaking width of the transparent solid soap composition of the present invention.

[Explanation of symbols]

 A transparent solid soap composition 1 tray 2 receiver 3 water 4 tray 5 through hole 6 projection a characteristic curve s inflection point α softness width

Claims (2)

[Claims] (1) A transparent solid soap composition comprising sodium chloride in a component of the transparent solid soap. 2. The composition according to claim 1, wherein said sodium chloride is present in an amount of 0.1%.
The transparent solid soap composition according to claim 1, wherein the blending amount is 1% by weight or more and 1.0% by weight or less.