JP4916098B2 - Transparent bar soap composition - Google Patents

Description

  The present invention relates to a transparent soap composition that does not require an aging process after molding.

  Conventionally, transparent solid soap has been manufactured by the following compounding components and processes by a frame kneading method. That is, first, a fatty acid or fat is dissolved in a lower alcohol such as ethanol. Sodium hydroxide is added to this to neutralize or saponify, and then a moisturizing agent such as sugar, sorbitol, glycerin, etc. is added, and if necessary, pigments, fragrances, drugs, plant extracts, etc. are added and dissolved. This is poured into a predetermined frame, cut and molded after cooling and solidification. Next, the volatile component in the molded product was volatilized and the molded product was aged until it reached a certain amount. This aged product has been commercialized by further shaping and packaging.

  By passing through the aging step in this conventional production method, a molded product having an appropriate hardness can be obtained. In addition, even when stored under severe conditions of high temperature and high humidity, it is excellent in storage stability in that it does not become a sweating state in which the liquid material flows out like sweat on the surface, and it is less likely to become clouded even during use. There is an advantage that such properties can be obtained.

  However, although the period for aging in the above-described conventional manufacturing method varies depending on the weight of the molded product, for example, a 100 g molded product requires a period of about 60 days and is aged for a long time. A vast space for is needed. Since the aging process takes a long time in this way, efficient production has been hindered, and the price of the transparent solid soap as a product has been relatively high.

  Attempts have been made to shorten the aging period at the time of production, which required such a long period of time, to shorten the period. For example, JP-A-63-275700 discloses a method for continuously producing transparent solid soap without using a lower alcohol which is a volatile component at the time of aging (see Patent Document 1). JP-A-11-106307 discloses an improved method of blending sulfite or the like as a reducing agent in order to improve the storage stability of triethanolamine blended as a neutralizing agent (Patent Document 2). reference). In addition, JP-A-11-124598 discloses a transparent solid soap composition with good production efficiency by a mechanical kneading method (see Patent Document 3).

  However, in the production method disclosed in JP-A-63-275700, triethanolamine is used as a neutralizing agent. Therefore, when stored for a long period of time, triethanolamine is oxidized and deteriorated. Therefore, when the product is stored under severe environmental conditions where the storage conditions are high temperature and high humidity, there is a problem of sweating or clouding as described above. .

  The method disclosed in Japanese Patent Application Laid-Open No. 11-106307 in which sulfite or the like is blended as a reducing agent is insufficient for solving the above-described problems.

In addition, the transparency of the transparent soap composition disclosed in JP-A-11-124598 cannot be obtained by a mechanical kneading method.
JP-A 63-275700 JP-A-11-106307 Japanese Patent Laid-Open No. 11-124598

  Therefore, the present invention does not require an aging step as in the conventional production method, can be produced with high production efficiency, is excellent in transparency, storage stability and hardness, and does not cause sweating even under high temperature and high humidity conditions. And it aimed at providing the transparent solid soap composition which does not become cloudy in the middle of use.

As a result of intensive studies to achieve the above object, the present invention has been completed. That is, the present invention provides fatty acid sodium or a mixed salt of fatty acid sodium / potassium,
An amphoteric surfactant selected from the group consisting of the compounds represented by the following chemical formulas (A) to (C) and containing at least a compound represented by the following chemical formula (A) ;
A nonionic surfactant,
Glycerin,
From the group consisting of polyoxypropylene glyceryl ether, polyoxypropylene diglyceryl ether, polyoxypropylene polyglyceryl ether, polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxypropylene diglyceryl ether, polyoxyethylene polyoxypropylene polyglyceryl ether A transparent solid soap composition comprising at least one glycerin derivative selected .

[Wherein, R ₁ represents an alkyl group or alkenyl group having 7 to 21 carbon atoms, n and m are the same or different and represent an integer of 1 to 3, and Z represents a hydrogen atom or (CH ₂ ) _p COOY (where p is an integer of 1 to 3, and Y is an alkali metal, alkaline earth metal or organic amine). ],

[Wherein R ₂ represents an alkyl group or alkenyl group having 7 to 21 carbon atoms, R ₃ and R ₄ are the same or different and represent a lower alkyl group, and A represents a lower alkylene group. . ],and

[Wherein, R ₅ represents an alkyl group or alkenyl group having 8 to 22 carbon atoms, and R ₆ and R ₇ are the same or different and represent a lower alkyl group. ].

  As a preferred embodiment of the present invention, fatty acid sodium or a mixed salt of sodium / potassium fatty acid is 20 to 40% by weight, amphoteric surfactant is 2 to 10% by weight, and nonionic surfactant is 2 to 15% by weight. And 1-10 weight% of glycerol derivatives are contained.

  In a preferred embodiment of the present invention, the sodium / potassium ratio (molar ratio) of the mixed salt of fatty acid with sodium / potassium is 10/0 to 7/3.

  The transparent solid soap composition of the present invention exhibits the following effects. First, according to the transparent soap composition of the present invention, a ripening step that has been conventionally required is unnecessary, and therefore, a transparent soap product can be provided to the market quickly, in large quantities, and economically. .

  Further, the transparent solid soap composition of the present invention is excellent in transparency, hardness and storage stability, and even when stored for a long time under harsh environmental conditions, the surface is melted and the color change and the like are altered or sweated. There is no performance, and even when compared with a transparent soap composition that has been manufactured through a conventional aging process, the surface is not clouded during use. Therefore, it can be used effectively as a transparent soap composition and has a high product value.

  The above effects are as follows: fatty acid sodium or a mixed salt of fatty acid sodium / potassium is 20 to 40% by weight, amphoteric surfactant is 2 to 10% by weight, nonionic surfactant is 2 to 15% by weight, and glycerin derivative is 1 to 1%. The composition is 10% by weight, the sodium / potassium ratio (molar ratio) of the fatty acid sodium / potassium mixed salt is 10/0 to 7/3, and further, a specific glycerin derivative is added. This is particularly effective.

  Hereinafter, the present invention will be described in detail. The transparent solid soap composition of the present invention contains fatty acid sodium or a mixed salt of sodium / potassium fatty acid, an amphoteric surfactant, a nonionic surfactant, glycerin, and a glycerin derivative.

  The fatty acid used in the transparent soap composition of the present invention in the fatty acid sodium or the mixed sodium / potassium salt of fatty acid is preferably 8-20, more preferably 12-18, saturated or non-saturated. It is a saturated fatty acid and may be linear or branched. Specific examples include, for example, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, isostearic acid and the like, and beef tallow fatty acid, coconut oil fatty acid, palm kernel oil fatty acid and the like which are mixtures thereof.

  Specific examples of the fatty acid sodium include sodium laurate, sodium myristate, sodium palmitate, sodium stearate, sodium oleate, sodium isostearate, beef tallow fatty acid sodium, coconut oil fatty acid sodium, palm kernel oil fatty acid sodium and the like. These may be used alone or in combination of two or more. Among the above fatty acid sodium, sodium laurate, sodium myristate, sodium palmitate, sodium stearate, sodium oleate, and sodium isostearate can be suitably used.

  Specific examples of sodium / potassium mixed salts of fatty acids include sodium / potassium laurate, sodium / potassium myristate, sodium / potassium palmitate, sodium / potassium stearate, sodium / potassium oleate, sodium / potassium isostearate, Examples include beef tallow fatty acid sodium / potassium, coconut oil fatty acid sodium / potassium, and palm kernel oil fatty acid sodium / potassium. These may be used alone or in combination of two or more. Among the sodium / potassium mixed salts of the above fatty acids, sodium / potassium laurate, sodium / potassium myristate, sodium / potassium palmitate, sodium / potassium stearate, sodium / potassium oleate, and sodium / potassium isostearate are preferred. Can be used for

  The content of the fatty acid sodium or the sodium / potassium mixed salt of fatty acid in the transparent solid soap composition of the present invention is preferably 20 to 40% by weight, particularly preferably 25 to 35% by weight. If this content is less than 20% by weight, the freezing point is lowered, and therefore, when stored for a long period of time, the surface melts and the commercial value may be impaired. On the other hand, if it exceeds 40% by weight, the transparency may be lowered, or a feeling of tension may occur after use.

  Further, in the mixed salt of fatty acid sodium / potassium, the molar ratio of sodium and potassium constituting the salt (sodium / potassium ratio) is 10/0 (that is, fatty acid sodium) to 7/3, particularly 9 / It is preferable that it is 1-8 / 2. If the sodium / potassium ratio exceeds 7/3 and the proportion of potassium increases, the freezing point becomes low. Therefore, when stored for a long period of time, the surface may melt and the commercial value may be impaired. Moreover, there is a possibility that the hardness decreases, the dissolution during use increases, the sweating occurs under high temperature and high humidity conditions, or the surface becomes clouded during use.

  Examples of the amphoteric surfactant used in the transparent solid soap composition of the present invention include amphoteric surfactants represented by the above chemical formulas (A) to (C).

In the chemical formula (A), the “alkyl group having 7 to 21 carbon atoms” of R ₁ may be linear or branched, and the number of carbon atoms is preferably 7 to 17. The “alkenyl group having 7 to 21 carbon atoms” of R ₁ may be linear or branched, and the number of carbon atoms is preferably 7 to 17. Examples of the “alkali metal” of Y include sodium and potassium, examples of the “alkaline earth metal” include calcium and magnesium, and examples of the “organic amine” include monoethanolamine, diethanolamine and trimethylamine. Examples include ethanolamine.

Specific examples of the amphoteric surfactant represented by the chemical formula (A) include an imidazolinium betaine type, such as 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (synthesized from lauric acid). , Hereinafter referred to as “lauroiyl imidazolinium betaine” for convenience), 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (synthesized from stearic acid), and coconut oil fatty acid. 2-alkyl or alkenyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine (R ₁ is a mixture of C _{7 to} C ₁₇ , hereinafter also referred to as “cocoyl imidazolinium betaine” for convenience).

In formula (B), and "alkenyl group having a carbon number of 7 to 21""alkyl group having a carbon number of 7 to 21" of R ₂ is the same as R ₁ of formula (A). The “lower alkyl group” for R ₃ and R ₄ is a linear or branched alkyl group having preferably 1 to 3 carbon atoms. Furthermore, the “lower alkylene group” of A is a linear or branched alkylene group having preferably 3 to 5 carbon atoms.

Specific examples of the amphoteric surfactant (amide alkyl betaine type) represented by the chemical formula (B) include amidopropyl betaine type, for example, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine (R ₂ is C _{7 to} C ₁₇ . Mixture).

In the chemical formula (C), the “alkyl group having 8 to 22 carbon atoms” of R ₅ may be linear or branched, and the number of carbon atoms is preferably 8 to 18. The “alkenyl group having 8 to 22 carbon atoms” of R ₅ may be linear or branched, and the number of carbon atoms is preferably 8 to 18. Furthermore, the “lower alkyl group” of R ₆ and R ₇ is the same as R ₃ and R _{4 in} the chemical formula (B).

Specific examples of the amphoteric surface active agents represented by the chemical formula (C) (alkyl betaine type), lauryl betaine, synthesized from coconut fatty alkyl or alkenyl acid betaine (R ₅ is C ₈ ~ C ₁₈ mixture).

  In the present invention, at least one selected from the group consisting of amphoteric surfactants represented by the above chemical formulas (A) to (C) is used. When a plurality of amphoteric surfactants represented by the chemical formula (A) are used, a plurality of amphoteric surfactants represented by the chemical formula (B) may be used. A plurality of amphoteric surfactants represented by

  Among the amphoteric surfactants described above, imidazolinium betaine type, particularly cocoylimidazolinium betaine, among the amphoteric surfactants represented by the chemical formula (A) is particularly preferably used.

  In the transparent solid soap composition of the present invention, fatty acid soap (fatty acid sodium or a mixed salt of fatty acid sodium / potassium) and an amphoteric surfactant form a composite salt by blending the amphoteric surfactant described above. The effects of improving transparency, improving hardness, and decreasing the degree of dissolution are exhibited.

  The content of the amphoteric surfactant in the transparent solid soap composition of the present invention is preferably 2 to 10% by weight, particularly 4 to 8% by weight. If this content is less than 2% by weight, the freezing point will be low, and if stored for a long period of time, the surface will melt and the commercial value may be impaired. Moreover, there exists a possibility that hardness may fall or the melt-down at the time of use may become large. Further, the transparency may be lowered. On the other hand, if it exceeds 10% by weight, a sticky feeling is produced after use, and if stored for a long period of time, the surface may be browned and the commercial value may be impaired.

  Nonionic surfactants used in the transparent soap composition of the present invention include polyoxyethylene (hereinafter also referred to as POE) hydrogenated castor oil, polyoxyethylene 2-octyldodecyl ether, polyoxyethylene lauryl ether, propylene oxide. Ethylene oxide copolymer block polymer, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene glycol, polyethylene glycol diisostearate, alkyl glucoside, polyoxyethylene-modified silicone (for example, polyoxyethylene alkyl-modified dimethyl silicone), polyoxy Examples thereof include ethylene glycerin monostearate and polyoxyethylene alkyl glucoside. These may be used alone or in combination of two or more. Among the above nonionic surfactants, polyoxyethylene hydrogenated castor oil and propylene oxide ethylene oxide copolymer block polymer can be suitably used.

  In the transparent solid soap composition of this invention, the effect | action which improves transparency is exhibited by mix | blending a nonionic surfactant.

  The content of the nonionic surfactant in the transparent solid soap composition of the present invention is preferably 2 to 15% by weight, particularly 6 to 12% by weight. If this content is less than 2% by weight, the transparency may be lowered, or a feeling of tension may occur after use. On the other hand, if it exceeds 15% by weight, the freezing point is lowered, so that when stored for a long period of time, the surface may melt and the commercial value may be impaired. Moreover, there exists a possibility that hardness may fall or the melt-down at the time of use may become large. Furthermore, a sticky feeling may occur after use.

  Examples of the glycerin derivative used in the transparent soap composition of the present invention include polyoxypropylene glyceryl ether, polyoxypropylene diglyceryl ether, polyoxypropylene polyglyceryl ether, polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxy Propylene diglyceryl ether, polyoxyethylene polyoxypropylene polyglyceryl ether and the like can be suitably used. These may be used alone or in combination of two or more. Among these, polyoxypropylene (9) diglyceryl ether and polyoxypropylene (7) glyceryl ether can be particularly preferably used.

  The content of the glycerin derivative in the transparent solid soap composition of the present invention is preferably 1 to 10% by weight, particularly 4 to 8% by weight. If this content is less than 1% by weight, the freezing point will be low, and if stored for a long period of time, the surface will melt and the commercial value may be impaired. In addition, sweating may occur under conditions of high temperature and humidity. On the other hand, if it exceeds 10% by weight, the transparency may be lowered, the hardness may be too high, or a sticky feeling may occur after use.

  In the transparent solid soap composition of this invention, the effect | action which raises the freezing point of soap glue while lowering | hanging a hygroscopic property is exhibited in a manufacturing process by mix | blending a glycerol derivative.

  The transparent soap composition of the present invention can optionally contain the following components within a range not impairing the above-described action. This optional component includes fungicides such as trichlorocarbanilide, hinokitiol; maltitol, sorbitol, 1,3-butylene glycol, propylene glycol, sugar, pyrrolidone carboxylic acid, sodium pyrrolidone carboxylate, hyaluronic acid, polyoxyethylene alkyl Moisturizing agents such as glucoside ether; oils; fragrances; dyes; chelating agents such as edetate trisodium dihydrate; UV absorbers; antioxidants; Natural extracts such as nonionic, cationic or anionic water-soluble polymers; usability improvers such as lactic acid esters; sodium alkyl ether carboxylates, disodium alkylsulfosuccinates, sodium alkylisethionates, , And the like; polyoxyethylene alkyl sodium sulphate, acyl methyl taurine, sodium acyl glutamate, acyl sarcosine foaming improvers such as sodium Shin acid.

  About the manufacturing method of the transparent solid soap composition of this invention, general methods, such as a frame kneading method and a mechanical kneading method, can be applied to the mixture of each above-mentioned component.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further in detail, this invention is not limited to these.

Examples 1-5
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 1 were neutralized with an aqueous sodium hydroxide solution, and then dried to obtain mixed fatty acid sodium.

  Next, the transparent solid soap composition of Examples 1-5 from which the compounding quantity of mixed fatty acid sodium differs by the next manufacturing process with the compounding component and compounding quantity shown in Table 2 was manufactured.

  That is, the above-mentioned mixed fatty acid sodium, glycerin, sorbitol and polyoxypropylene (14) diglyceryl ether were dissolved under a temperature condition of 75 to 85 ° C. A solution in which edetate trisodium dihydrate is dissolved in a portion of ion-exchanged water is added thereto, and sugar, cocoylimidazolinium betaine, polyoxyethylene (60) hydrogenated castor oil, and ion-exchanged water are further added. The remainder and flavor were added to form soap paste. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  The test items shown in Table 3 were tested using the transparent solid soap compositions of Examples 1 to 5 as samples.

  The test items in Table 3 were performed as follows.

1. Freezing point The freezing point was measured by measuring the temperature at which the soap paste was solidified until it became difficult to stir due to a decrease in temperature after the soap paste was poured into a plastic cup and stirred slowly using a mercury thermometer. The temperature was taken as the freezing point.

2. Transparency Transparency was judged based on the following criteria by visual observation. ◎ when it was extremely uniform, ◯ when it was uniform, △ when it was turbid but very slight, and x when it was turbid.

3. Hardness Hardness was measured using a card meter (manufactured by Iio Electric Co., Ltd.) at 25 ° C. by applying a load of 800 g to a needle thickness of 1 mmφ on the sample.

4). Sweating test In the sweat test, the sample was left for 1 week in a 40 ° C, 75% RH artificial meteor, then the sample was removed from the artificial meteor, dried at 25 ° C for 12 hours, and then visually checked. Based on the following criteria. When the sample surface did not change, ◎, when very little sweating occurred, ◯, when sweating occurred, Δ, when considerable sweating occurred and the sample surface was in a soft state, ×.

5. Sealed storage test (surface turbidity during use)
In the closed storage test, the surface of the sample was lightly wetted with warm water of 28 to 32 ° C. and foamed with both hands. Next, the foam on the surface of the resulting sample was washed lightly with water, further drained 2-3 times, and then stored in the tray 1 shown in FIG. This operation was repeated twice a day in the morning and evening for 5 days every week for a total of 40 days.

  As shown in FIG. 1, the tray 1 includes a receiver 2 and a sealing lid 7, and a thin reservoir 3 is stretched on the bottom of the receiver 2. For the receiver 2, a receiving tray 4 is provided in a state where it is supported at its peripheral edge. A through hole 5 and a protrusion 6 are formed on the bottom of the tray 4. The sample A is placed on the surface of the tray 4 and accommodated in the tray 1 in a state of being sealed with the sealing lid 7. In this accommodated state, water is discharged from the sample A by the through holes 5 and the protrusions 6, and the sample A is humidified by water vapor from the stored water 3 through the through holes 5.

  The tray 1 containing the sample A was stored for a total of 40 days in a room controlled with a ventilation fan or the like so that the environmental conditions of a temperature of 30 ° C. and a humidity of 70% RH were maintained. When the indoor temperature was 10 ° C. or lower or the humidity was 50% RH or lower, hot indoor water or room temperature water was stored in the indoor bathtub to control indoor environmental conditions. After 40 days from the start of the storage, the result of the sealed storage test was determined by visual observation under the following criteria based on the presence or absence of cloudiness of the surface of the sample A and the wiping state. ◎ when there was no change on the sample surface, ◯ when very slight turbidity occurred, Δ when very slight turbidity occurred, and x when turbidity and white turbidity occurred.

6). Friction Solubility Friction solubility was measured according to JIS K 3304 and judged according to the following criteria. When the friction solubility was less than 30, ◎, when it was 30 or more and less than 40, ○, when it was 40 or more and less than 50, Δ, and when it was 50 or more, x.

7). Elution rate The elution rate was calculated from the following equation based on the measured value by attaching a pre-weighed sample to the tip of a wire, immersing it in 20 ° C. water, taking it out after 1 hour and measuring its weight. When the elution rate was less than 10%, ◎ when 10% or more and less than 20%, △ when 20% or more and less than 30%, and x when 30% or more.

Dissolution rate (%) = 100 × (W ₁ −W ₂ ) / W ₁
(W ₁ : Sample weight before immersion (g), W ₂ : Sample weight after immersion (g)).

8). Foaming property Foaming property was obtained by lightly wetting the surface of the sample with warm water of 28 to 32 ° C. and wrapping it with both hands and rubbing it 20 to 30 times. The foaming state in this case was judged, and it was marked as ◎ when extremely good, ◯ when good, Δ when slightly good, and × when bad.

9. Usability Usability was determined by 20 female panelists (20 to 30 years old) by taking a sample in a normal face washing mode, washing it with foam and washing it with the following criteria according to the condition after washing the face. ◎ when moist feeling was extremely high, ◯ when moist feeling was obtained, △ when moist feeling was normal, x when sticky feeling or sticking feeling occurred.

10.45 ° C State Stability 45 ° C state stability is determined based on the following criteria after the sample is hermetically packaged with a resin film and left for 1 month at 45 ° C, and the surface condition of the sample is visually observed. did. When there was no change in the surface of the sample, ◎, when very slightly melted, ◯, when melted, Δ, when melted and soft, ×.

11.45 ° C Appearance Stability 45 ° C appearance stability is determined based on the following criteria by sealing the sample with a resin film and leaving it to stand for 1 month at 45 ° C. did. When there was no change on the sample surface, ◎, when a slight brown change occurred, ◯, when a slight brown change occurred, Δ, when it changed considerably brown, x.

  From the results of Table 3, for the transparent solid soap composition obtained without going through the aging step, the samples of Examples 1 to 5 are all good in terms of properties such as transparency and hardness, and are 45 ° C. Even when stored for a long time under harsh environmental conditions, there is no alteration such as melting or color change of the surface, there is no sweating under high temperature and high humidity conditions, and there is no clouding of the surface during use there were.

Examples 6-8
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 4 were neutralized with an aqueous sodium hydroxide solution, and then dried to obtain mixed fatty acid sodium.

  Next, the transparent solid soap composition of Examples 6-8 from which the compounding quantity of a cocoyl imidazolinium betaine differs in the next manufacturing process with the compounding component and compounding quantity shown in Table 5 was manufactured.

  That is, the above-mentioned mixed fatty acid sodium, glycerin, sorbitol and polyoxypropylene (8) glyceryl ether were dissolved under a temperature condition of 75 to 85 ° C. A solution in which edetate trisodium dihydrate is dissolved in a portion of ion-exchanged water is added thereto, and sugar, cocoylimidazolinium betaine, polyoxyethylene (60) hydrogenated castor oil, and ion-exchanged water are further added. The remainder and flavor were added to form soap paste. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  Using these transparent soap compositions of Examples 6 to 8 as samples, the test items shown in Table 6 were tested.

  In addition, the method of the test items such as the freezing point and the determination criteria are the same as in the case of the first embodiment.

  From the results of Table 6, with respect to the transparent solid soap composition obtained without passing through the aging step, the samples of Examples 6 to 8 are all good in terms of properties such as transparency and hardness, and are 45 ° C. Even when stored for a long time under harsh environmental conditions, there is no alteration such as melting or color change of the surface, there is no sweating under high temperature and high humidity conditions, and there is no clouding of the surface during use there were.

Examples 9-12
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 7 were neutralized with an aqueous sodium hydroxide solution, and then dried to obtain mixed fatty acid sodium.

  Next, the transparent solid soap compositions of Examples 9 to 12 in which the blending amount of polyoxyethylene (35) polyoxypropylene (40) glycol is different in the following production process depending on the blending components and blending amounts shown in Table 8. Manufactured.

  That is, the above-mentioned mixed fatty acid sodium, glycerin, sorbitol and polyoxyethylene (10) polyoxypropylene (10) glyceryl ether were dissolved at a temperature of 75 to 85 ° C. A solution in which trisodium edetate dihydrate was dissolved in a portion of ion-exchanged water was added thereto, and sugar, cocoylimidazolinium betaine, polyoxyethylene (35) polyoxypropylene (40) glycol, and The remainder of the ion exchange water and flavor were added to make soap paste. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  The test items shown in Table 9 were tested using the transparent soap compositions of Examples 9 to 12 as samples.

  In addition, about the method of the test items, such as a freezing point, and a criterion, it is the same as the case of Example 1 etc. which were mentioned above.

  From the results of Table 9, with respect to the transparent solid soap composition obtained without going through the aging step, the samples of Examples 9 to 12 are all good in terms of properties such as transparency and hardness, and are 45 ° C. Even when stored for a long time under harsh environmental conditions, there is no alteration such as melting or color change of the surface, there is no sweating under high temperature and high humidity conditions, and there is no clouding of the surface during use there were.

Examples 13-15 and Comparative Examples 1-3
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 10 were neutralized with an aqueous sodium hydroxide solution, and then dried to obtain mixed fatty acid sodium.

  Next, the transparent solid soap composition of Examples 13-15 from which the compounding quantity of polyoxypropylene (10) glyceryl ether differs by the following manufacturing process with the compounding component and compounding quantity shown in Table 11 was manufactured.

  That is, the above-mentioned mixed fatty acid sodium, glycerin, sorbitol and polyoxypropylene (10) glyceryl ether were dissolved under a temperature condition of 75 to 85 ° C. A solution in which trisodium edetate dihydrate is dissolved in a portion of ion-exchanged water is added to this, and sugar, cocoylimidazolinium betaine, polyoxyethylene (20) polyoxypropylene (8) cetyl ether And the remainder of ion-exchange water and 1, 3- butylene glycol, propylene glycol, and the fragrance | flavor were added, and it was set as soap glue. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  In addition, Comparative Examples 1-3 is a case where the polyoxypropylene (10) glyceryl ether which is a glycerol derivative is not mix | blended, A transparent solid soap composition is obtained by the manufacturing process similar to the above.

  Test items shown in Table 12 were tested using the transparent soap compositions of Examples 13 to 15 and Comparative Examples 1 to 3 as samples.

  In addition, the method of the test items such as the freezing point and the determination criteria are the same as in the case of the first embodiment.

  From the results of Table 12, with respect to the transparent solid soap composition obtained without going through the aging step, the samples of Examples 13 to 15 are all good in terms of properties such as transparency and hardness, and are 45 ° C. Even when stored for a long time under harsh environmental conditions, there is no alteration such as melting or color change of the surface, there is no sweating under high temperature and high humidity conditions, and there is no clouding of the surface during use there were.

  On the other hand, when the polyoxypropylene (10) glyceryl ether is not mix | blended from the result of the sample of Comparative Examples 1-3, the following is understood. That is, since the freezing point is 52 ° C. or lower, the surface tends to be in a molten state, which is not preferable as a transparent solid soap product. In addition, since the hardness is lowered and the frictional solubility and dissolution rate are increased, the amount of dissolution during use is increased, and sweating is likely to occur under conditions of high temperature and humidity. Moreover, the surface becomes clouded during use.

Examples 16-19
First, the above-described mixed components and mixed amounts of the mixed fatty acids shown in Table 1 were neutralized with a sodium hydroxide aqueous solution or a sodium hydroxide / potassium mixed aqueous solution having a sodium / potassium molar ratio of 9/1 to 7/3. Thereafter, this was dried to obtain mixed fatty acid salts.

  Next, the transparent solid soap compositions of Examples 16 to 19 having different sodium / potassium molar ratios of the mixed fatty acid salt were produced in the following production process according to the blending components and blending amounts shown in Table 13.

  That is, the above-mentioned mixed fatty acid salt, glycerin, sorbitol and polyoxyethylene (20) polyoxypropylene (20) tetraglyceryl ether were dissolved at a temperature of 75 to 85 ° C. A solution of edetate trisodium dihydrate dissolved in a portion of ion exchange water was added thereto, and sugar, cocoyl imidazolinium betaine, polyoxyethylene (12) lauryl ether, and the balance of ion exchange water. And perfume were added to make soap glue. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  The test items shown in Table 14 were tested using the transparent solid soap compositions of Examples 16 to 19 as samples.

  In addition, the method of the test items such as the freezing point and the determination criteria are the same as in the case of the first embodiment.

  From the results of Table 14, with respect to the transparent solid soap composition obtained without going through the aging step, the samples of Examples 16 to 19 are all good in properties such as transparency and hardness, and are 45 ° C. Even when stored for a long time under harsh environmental conditions, there is no alteration such as melting or color change of the surface, there is no sweating under high temperature and high humidity conditions, and there is no clouding of the surface during use there were.

Example 20 and Reference Examples 21-22
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 1 were neutralized with a sodium hydroxide / potassium mixed aqueous solution having a sodium / potassium molar ratio of 9/1, and then dried to obtain a mixed fatty acid salt. Got.

Next, the transparent solid soap compositions of Example 20 and Reference Examples 21 to 22 having different types of amphoteric surfactants were produced in the following production process using the blending components and blending amounts shown in Table 15.

  That is, the above-mentioned mixed fatty acid salt, glycerin, sorbitol, and polyoxypropylene (70) glyceryl ether were dissolved under a temperature condition of 75 to 85 ° C. A solution in which trisodium edetate dihydrate was dissolved in a portion of ion-exchanged water was added thereto, and sugar, amphoteric surfactant, polyoxyethylene (5) glycerol monostearate and ion-exchanged water were further added. The remainder and flavor were added to form soap glue. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

Using the transparent solid soap compositions of Example 20 and Reference Examples 21 to 22 , the test items shown in Table 16 were tested.

  In addition, the method of the test items such as the freezing point and the determination criteria are the same as in the case of the first embodiment.

From the results of Table 16, for the transparent solid soap composition obtained without going through the aging step, the samples of Example 20 and Reference Examples 21 to 22 are all good in terms of properties such as transparency and hardness. Even when stored at harsh environmental conditions of 45 ° C for a long period of time, there is no alteration such as melting or color change of the surface, no sweating under high temperature and high humidity conditions, and surface turbidity during use It did not occur.

Further, as to the types of amphoteric surfactants, from comparison between Example 20 and Reference Examples 21 and 22, transparency, hardness, sweating under high temperature and high humidity conditions, surface turbidity during use, foaming It can be seen that the imidazolinium betaine type is particularly preferable in terms of properties.

Examples 23 to 27 and Comparative Examples 4 to 5
First, the mixed components and mixed amounts of the mixed fatty acids shown in Table 1 were neutralized with a sodium hydroxide / potassium mixed aqueous solution having a sodium / potassium molar ratio of 9/1, and then dried to obtain a mixed fatty acid salt. Got.

  Next, the transparent solid soap composition of Examples 23-27 from which the kind of glycerol derivative differs was manufactured with the following manufacturing process with the compounding component and compounding quantity shown in Table 17.

  That is, the above-described mixed fatty acid salt, glycerin, sorbitol, and glycerin derivatives a to e were dissolved under a temperature condition of 75 to 85 ° C. A solution of edetate trisodium dihydrate dissolved in a portion of ion-exchanged water was added thereto, and sugar, cocoylimidazolinium betaine, polyoxyethylene (10) methylglucoside, and the balance of ion-exchanged water. And perfume were added to make soap glue. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  In Comparative Example 4, a non-glycerin derivative f is blended in place of the glycerin derivative, and in Comparative Example 5, a non-glycerin derivative g is blended in place of the glycerin derivative, and the above-described production steps are transparent. A solid soap composition is obtained.

  The glycerin derivatives a to e and the non-glycerin derivatives f and g are as shown in Table 18.

  Using the transparent solid soap compositions of Examples 23 to 27 and Comparative Examples 4 to 5 as samples, the test items shown in Table 19 were tested.

  In addition, the method of the test items such as the freezing point and the determination criteria are the same as in the case of the first embodiment.

  From the results of Table 19, for the transparent soap composition obtained without going through the aging step, the samples of Examples 23 to 27 are all good in properties such as transparency, and are harsh at 45 ° C. Even when stored for a long time under environmental conditions, there was no alteration such as melting or color change of the surface, no sweating under high temperature and high humidity conditions, and no surface turbidity during use. .

  In contrast, the results of the samples of Comparative Examples 4 and 5 show the following when a non-glycerin derivative is blended instead of the glycerin derivative. That is, since the freezing point is 52 ° C. or lower, the surface tends to be in a molten state, which is not preferable as a transparent solid soap product. In addition, since the hardness is reduced and the frictional solubility and dissolution rate are increased, the amount of dissolution during use is large, and sweating is likely to occur under conditions of high temperature and humidity. Moreover, the surface becomes clouded during use.

  Thus, in what mix | blended the glycerol derivative, although it turns out that what has the outstanding performance as a transparent solid soap composition is obtained regardless of the kind, Examples 23 and 24 and Examples 25-27 and From the comparison, it can be seen that the glycerin derivative is particularly preferably polyoxypropylene (9) diglyceryl ether or polyoxypropylene (7) glyceryl ether.

Example 28
The transparent solid soap composition of Example 28 was manufactured by the following manufacturing process using the blending components and blending amounts shown in Table 20.

  That is, lauric acid, myristic acid, palmitic acid, stearic acid and isostearic acid, glycerin, 70% sorbitol and polyoxypropylene (7) glyceryl ether were dissolved at a temperature of 65 to 75 ° C. 48% caustic soda and 48% caustic potash were added thereto for neutralization, and a solution in which trisodium edetate dihydrate was dissolved in a portion of ion-exchanged water was added thereto, and a temperature of 75 to 85 ° C was further added. Then, sugar, lauroiylmidazolinium betaine, polyoxyethylene (5) glycerin monostearate and the balance of ion-exchanged water, flavor, red No. 227 and dipotassium glycyrrhizinate were added to form soap glue. This soap paste was poured into a frame made of a pipe having a diameter of 70 mmφ. The frame was cooled and solidified for 2 hours while keeping it at 30 ° C. with warm water, and the solidified product was cut to obtain 100 g of a transparent solid soap composition.

  The transparent solid soap composition of Example 28 obtained without going through this aging step is good in terms of properties such as transparency and hardness, and it can be used for a long time under harsh environmental conditions of 45 ° C. Even when stored, there was no alteration such as surface melting and color change, no sweating under high temperature and high humidity conditions, and no surface turbidity occurred during use.

Example 29
The transparent solid soap composition of Example 29 was manufactured by the following manufacturing process using the blending components and blending amounts shown in Table 21.

  That is, lauric acid, myristic acid, palmitic acid, stearic acid and oleic acid, glycerin, 70% sorbitol and polyoxypropylene (4) glyceryl ether were dissolved at a temperature of 65 to 75 ° C., and 48% caustic soda and 48 % Caustic potash was added to neutralize. A solution in which trisodium edetate dihydrate was dissolved in a portion of ion-exchanged water was added thereto, and sugar, lauryl imidazolinium betaine, polyoxyethylene alkyl-modified dimethyl was further added at a temperature of 75 to 85 ° C. The remainder of the silicone and ion-exchanged water, and the fragrance, Red No. 201 and Psyllium extract were added and dissolved uniformly. This was poured into a pipe (diameter 50 mmφ, height 40 mm, made of PET) having a rubber stopper at the bottom and a doll made of Estramer in the middle, and this was cooled and solidified at room temperature. Next, the rubber plug was removed, and the solidified product was extracted from the pipe to obtain 300 g of a transparent solid soap composition holding the doll in the solidified product.

  The transparent solid soap composition of Example 29 obtained without going through this aging step has a freezing point of 57 ° C., and the properties such as transparency and hardness are all good, and the harsh environment of 45 ° C. Even when stored for a long time under the conditions, there was no alteration such as melting of the surface and color change, no sweating under high temperature and high humidity conditions, and no surface turbidity during use. Moreover, since the transparency was good, the doll inside was clearly confirmed visually and presented a new appearance as never before.

  The transparent solid soap composition of the present invention exhibits the following effects. First, according to the transparent soap composition of the present invention, a ripening step that has been conventionally required is unnecessary, and therefore, a transparent soap product can be provided to the market quickly, in large quantities, and economically. .

  Further, the transparent solid soap composition of the present invention is excellent in transparency, hardness and storage stability, and even when stored for a long time under harsh environmental conditions, the surface is melted and the color change and the like are altered or sweated. There is no performance, and even when compared with a transparent soap composition that has been manufactured through a conventional aging process, the surface is not clouded during use. Therefore, it can be used effectively as a transparent soap composition and has a high product value.

It is a vertical front view of the tray used for the airtight storage test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray 2 Receiver 3 Reserved water 4 Saucepan 5 Through-hole 6 Protrusion 7 Sealing lid A Sample

Claims (3)

Fatty acid sodium or a mixed salt of fatty acid sodium / potassium,
An amphoteric surfactant selected from the group consisting of the compounds represented by the following chemical formulas (A) to (C) and containing at least a compound represented by the following chemical formula (A) ;
A nonionic surfactant,
Glycerin,
From the group consisting of polyoxypropylene glyceryl ether, polyoxypropylene diglyceryl ether, polyoxypropylene polyglyceryl ether, polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxypropylene diglyceryl ether, polyoxyethylene polyoxypropylene polyglyceryl ether At least one glycerin derivative selected ;
A transparent solid soap composition comprising:

[Wherein, R ₁ represents an alkyl group or alkenyl group having 7 to 21 carbon atoms, n and m are the same or different and represent an integer of 1 to 3, and Z represents a hydrogen atom or (CH ₂ ) _p COOY (where p is an integer of 1 to 3, and Y is an alkali metal, alkaline earth metal or organic amine). ],

[Wherein R ₂ represents an alkyl group or alkenyl group having 7 to 21 carbon atoms, R ₃ and R ₄ are the same or different and represent a lower alkyl group, and A represents a lower alkylene group. . ],and

[Wherein, R ₅ represents an alkyl group or alkenyl group having 8 to 22 carbon atoms, and R ₆ and R ₇ are the same or different and represent a lower alkyl group. ].   Fatty acid sodium or sodium / potassium mixed salt of fatty acid is 20 to 40% by weight, amphoteric surfactant is 2 to 10% by weight, nonionic surfactant is 2 to 15% by weight, and glycerin derivative is 1 to 10% by weight. The transparent solid soap composition according to claim 1.   The transparent solid soap composition of Claim 1 or 2 whose sodium / potassium ratio (molar ratio) in the mixed salt of fatty acid sodium / potassium is 10/0 to 7/3.

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