JPS62599A - Solid soap composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a solid soap composition containing microcapsules dispersed therein. The present invention relates to a novel solid soap composition that allows the production of soap compositions and that allows the microcapsules to disintegrate for the first time during use.

Problems to be Solved by the Prior Art and Inventions If Ehoken is left undisturbed or stored for a long period of time, it may become discolored, develop a bad odor, change in quality, or deteriorate. This is due to phenomena such as oxidation of fragrances, superfatting agents, disinfectants, anti-inflammatory agents, etc. added to soap, decomposition and reaction in alkaline soap. For this reason, additives that can be directly added to soap are limited to those that are unlikely to cause such alteration or deterioration, and may not be able to impart desired performance to soap.

In this case, as a measure to prevent the alteration and deterioration of soap due to the addition of such additives, unstable additives that are easily altered or deteriorated physically or chemically by themselves or by reactions with the soap base surface etc. One possible method is to retain the effect of the agent by encapsulating it in microcapsules, but it is possible to prevent the disintegration of the microcapsules during soap production and to stably disperse them into the soap, and to use miter 0 capsules when using the soap. It is quite difficult for the core material to disintegrate easily and its contents (core material) to flow out. In other words, when manufacturing soap, processes that involve impact and pressure operations such as kneading and molding are required, and therefore the microcapsules must be adjusted to withstand this. It is difficult to adjust the microcapsules to disintegrate for the first time with a relatively small frictional force, and for this reason, a solid soap containing microcapsules that simultaneously satisfies both of these characteristics has not been put into practical use.

The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a solid soap composition containing microcapsules that are less likely to disintegrate during production and that disintegrate during use to exhibit the effects of the contents.

In order to solve the problem, the present inventors have developed a solid soap containing microcapsules in which the microcapsules hardly disintegrate during the soap manufacturing process, and the microcapsules disintegrate and the contents flow out only during use. As a result of intensive research on the composition, we found that the crushing strength is 6 to 26ψ-, and more preferably the particle size is 30 to 26.
300 μm microcapsules were added to the entire composition at a concentration of 0.
When used in a soap composition of 1 to 10% by weight, it simultaneously satisfies the characteristics of resisting impact and pressure operations during soap production and the ability to disintegrate microcapsules with relatively small frictional force during soap use, and the above purpose is achieved. It has been found that this can be achieved satisfactorily, and the present invention has been completed.

Therefore, the present invention provides a bar soap composition characterized in that it contains stone microcagsels having a crushing strength in the range of 6 to 26 Φ, dispersed in 0.1 to 10% by weight of the entire composition. It is something.

According to the present invention, since the microcapsules are reliably retained in the soap until the soap is used, additives that are physically and chemically unstable by themselves or by reaction with the soap base can be microencapsulated. By doing so, the soap can be stably maintained until it is used, and the effects of the additives, such as pharmacological effects such as sterilization and anti-inflammation, fragrance, promotion of beauty, and improvement of the appearance of the soap, can be reliably expressed.

The present invention will be explained in more detail below.

The soap composition of the present invention contains microcapsules dispersed therein, and in the present invention, the microcapsules are 6 to 26 VcrI? , preferably 8 to 24 ktr/ar? By using microcapsules made of this food, they do not disintegrate during soap production, but only disintegrate when used, and the contents (core material) flow out. A soap composition containing microcapsules could be obtained.

On the other hand, if the strength of the microcapsules is too small (6Φ), most of the microcapsules will be crushed by the mechanical force during soap manufacturing, while if the strength of the microcapsules is too large (26Φ'crl L F), the microcapsules will be crushed when the soap is used. In either case, the object of the present invention cannot be achieved because the capsules are not crushed and the contents (core material) remain and the contents (core material) do not flow out sufficiently.

Mata, the particle size of the microcapsules used in the present invention is 30
~300 μm is suitable. If the diameter is less than 30 μm, even if the crushing strength is within the above range, the microcapsules may not be sufficiently crushed during use, and therefore the contents may not be sufficient and the soap may not be as effective when used. On the other hand, if it exceeds 300 μm, shaping properties during production are poor, and, for example, the surface of the soap becomes noticeably rough, which may impair its commercial value. Note that the preferred particle size range is 50 to 200 μm.

The amount of microcapsules in the soap composition ranges from 0 to 1.
10% (weight %, same hereinafter) is suitable.

If it is less than 0.1%, no effect can be expected from the contents of the microcapsules, and if it exceeds 10%, the foaming of the soap will decrease, cracking, etc. will occur, resulting in a decrease in performance and a problem with the commercial value. The preferred amount of microcapsules is 0.5 to 3.

Preferred microcapsules used in the present invention include those using a water-soluble polymer as the capsule wall material. Examples of such external water-soluble polymers include polysaccharides such as pectin, carrageenan, alginic acid, amylopectin, and guar gum, cellulose derivatives such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxyglopycellulose, and carboxymethylcellulose. Besides, examples include polyvinyl alcohol and gelatin.

In addition, various types of materials are used as the contents (core substance) to be microencapsulated, and various additives are used depending on the purpose of the composition, but in general, additives that are small and expensive, Physically and chemically unstable additives are effectively used, such as perfumes, disinfectants, anti-inflammatory agents, humectants, vitamins, etc. Further, in the microcapsules used in the present invention, K, a coloring agent, titanium mica, a pearl agent such as fish-striped foil, etc. can be added to the core substance or wall material in order to enhance the beauty of the product. The core substance content in microcapsules is 70
~96 buns is appropriate. If it is less than 701, the soap will not feel good when used (due to the effect of the wall material of the capsules), and if it exceeds 96, it will be difficult to manufacture capsules, and even if it can be manufactured, the strength of the capsule will decrease. Tend.

In addition, the preferable range is 76 to 93 degrees.

The method KFi for producing microcapsules having the above-mentioned crushing strength and particle size according to the present invention is not particularly limited, and any known method may be employed. For example, in addition to suitably using the Coatl Page method, for example, a double nozzle having concentric pores is used, and a solution or suspension containing the core substance to be encapsulated is supplied from the center nozzle, and It is also possible to adopt a method in which the capsule wall material is simultaneously extruded from an annular nozzle surrounding the capsule. In this case, when using a capsule with a water-soluble polymer as the capsule wall material, it is necessary to insolubilize the capsule wall material with a crosslinking agent, and also to prevent its dissolution in the composition. Preventing capsule dissolution can be achieved by controlling the surface activity of water-soluble polymers by adjusting the composition, adding electrolytes to the composition, or adding a poor solvent for water-soluble polymers such as alcohol. This can be done by decreasing the solubility of the agent in the solution.

The soap composition of the present invention has the above-mentioned microcapsules uniformly dispersed in a soap base as a detergent component. This soap base can be manufactured according to conventionally known methods.

For example, animal fats and oils represented by beef tallow, lard, whale oil, and fish oil; coconut oil; mother oil; gum kernel oil; vegetable oils and fats represented by soybean oil, olive oil, cottonseed oil, etc. They can be produced either by saponifying them singly or in combination with alkalis, or by neutralizing various fatty acids and resin acids with alkalis.

In addition to /ri and microcapsules, various other ingredients can be added to this soap base.

Such ingredients include fragrance, EDPA, EHD
Stabilizers such as P or alkali metal salts thereof may be mentioned.In addition, other surfactants may be added to the composition of the present invention in addition to the soap base to further enhance the detergency. Examples of such surfactants include α-sulfo fatty acid esters, isethionic acid esters, arylaryl sulfonic acids, alcohol sulfate esters, alcohol ethoxylates, alcohol sulfate esters, olefin sulfonic acids, and nonorafuin. Sulfonic acid, N-acylglutamic acid and their esters and acid salts, and K include alkylbetaine, alkylbetaine, and the like.

Furthermore, in order to adjust the effect of residual oil on the skin, for example superfatting agents and various skin protectants can be added. Examples of these substances include squalene, squalane, olefin oligomers, waxes, hydrocarbons such as phosphorus and other mineral oils, stearic acid, isostearic acid, oleic acid, ricinohwisno+xmineic acid, mineral oil, etc. IJ stinic acid, behenic acid, fatty acids, various glycerides, monoester, lanolin, inglobil myristate, inglovir lumitate, inbutyl stearate, etc. (D fatty H ester, cetyl alcohol, stearyl alcohol, oleyl alcohol) Examples include aliphatic alcohols, polyols such as glycerin, polyethylene glycol, and polyethylene glycol, ethoxylates of alcohols and fatty acids, silicones such as dimethyl silicone, other proteins and protein derivatives, and vitamins.

Furthermore, the soap composition of the present invention may contain pigments, anti-inflammatory agents such as allantoin and dipotassium glycyrrhizinate, and cydiphenyl ether in 2,4,4'-trichloro-2'-hydro-hydrochloride, depending on the purpose of use. 3.4. Conventional additives such as fungicides such as 4'-trichlorocarbanilide (TCC) can be added. Note that these can also be used as core materials for microcassels, but in addition to blending them into microcapsules, they may also be added separately to the soap paste.

A known method can be used to produce a soap composition using the above-mentioned ingredients. Usually, microcapsules and other necessary ingredients are mixed uniformly with a soap paste using a mixer, and then the soap paste is mixed with a mixer, and then the soap paste is mixed with a soap paste. A method of extruding and stamping is used.

Effects of the Invention The soap composition of the present invention uses microcapsules with a specific crushing strength that matches the characteristics of the soap composition, so that the microcapsules do not disintegrate during soap production and when used. Microcapsules disintegrate, so by encapsulating various soap additives in microcapsules, their properties can be retained and effectively exhibited until use, and even when stored for long periods of time, There is no deterioration in detergency or other soap functions, and there are no inconvenient phenomena such as discoloration or odor, and the product has significantly improved and satisfactory stability, and has excellent commercial and practical value. .

Next, the present invention will be specifically explained with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Examples 1 to 3. Comparative example] Gelatin was used as the wall material, and fragrance (70%) was used as the core material.
- Using Raltai f), microcapsules were manufactured according to the usual method of the usual Core Solve Silon method so that the core substance content was 70 to 801, and the crushing strength shown in Table 1 was obtained.
Particle size microcapsules were obtained. In this case, crushing strength,
The particle size was adjusted by adjusting the amount of hardening agent (geltal aldehyde) and the time of contact. The crushing strength of the microcapsules was measured by the following method.

A portion of the microcapsules obtained by the above method is transferred to another small rasp grate. Attach a cylindrical adapter with a flat bottom and a diameter of 2.911 mm to a rheometer (NRM-2002J manufactured by Fudo Kogyo Co., Ltd.), apply external pressure to the microcapsules with an adaptor, and read the external pressure at that time. ), and at the same time external pressure is applied)) The number of crushed microcapsules and remaining microcapsules is observed and measured using a microscope.

Next, soap pace 98% (beef tallow/coconut oil = 80720
IJ Kum soap,
After adding 2% of the microcapsules obtained by the above method to a mixture with a water content of 10 g and mixing uniformly with a mixer,
The soap was extruded using a pro ladder and stamped to obtain a soap composition in which microcasselles were uniformly dispersed in the soap paste.

The number of microcapsules remaining after the production of this soap composition containing microcapsules and the number of microcapsules remaining in the washing solution after washing when the soap composition was used were counted and compared with the number of microcapsules added.

The number of microcapsules in soap can be determined by adding a certain amount of soap to a beaker and adding about 30fflJl of water.
Heat to 50-60℃ to melt the soap.

Centrifuge the solution at 200 Or, p, m for 10 minutes,
Take out the microcapsule layer. After further diluting this with 25 times the amount of distilled water, a certain amount was removed and the number and size were measured under a microscope. In addition, the soap was used for cleaning in the same way as normal use, and the soap was rinsed with tap water and the cleaning solution was collected. The number of microcapsules remaining in the obtained cleaning solution is
They were centrifuged in the same manner as above, and their number and size were measured under a microscope.

Furthermore, the scent and stability of each soap composition were evaluated using the following methods.
Evaluation was made based on the criteria.

(1) Evaluation of product kasushi and kasushi when using soap A sensory test was conducted by 20 testers on the following 5 levels.
The center value of 0 people was used as the evaluation score.・5: Strong 4: Slightly strong 3: Just good 2: Slightly weak l: Weak (2) Stability evaluation of soap composition Stability was evaluated according to the following evaluation criteria. The soap was evaluated after being stored at 50°C for one month.

(1) Evaluation of color tone stability Visual evaluation was performed by 20 testers using the following five-step method.

0: There is no difference compared to a control sample that was stored in a cool and dark place in advance.

1: A control sample that had been stored in a cool, dark place] Slight discoloration.

2: Slight discoloration compared to the control sample that had been stored in a cool, dark place.

3: Some discoloration compared to the control sample that had been stored in a cool, dark place.

4: Significant discoloration compared to the control sample that had been stored in a cool, dark place.

01) Evaluation of Kao9 stability A sensory evaluation was conducted by 20 testers using the following 5-step method. Rating A and A' are items with commercial value, rating 1
B'#c has no commercial value.

A: There is no difference in aroma compared to a control sample that was previously stored in a cool and dark place.

A': Same as A, but slightly inferior.

B: The fragrance deteriorates and there is a strange odor.

B': Slightly inferior to B.

C: Significant deterioration of aroma and severe odor.

(3) Overall evaluation Evaluation was made by the following method.

0: No problem in color tone or odor.

Δ: Slightly inferior in color tone or odor, but no problem in terms of commercial value.

X: Color tone and K odor are inferior to 9, which is a problem in terms of commercial value.

The above results are shown in Table 1.

As is clear from Table 1, microcapsules with a crushing strength in the range of 6 to 26 klF/ls (Examples) are less likely to be crushed during soap production, and moreover, they are effectively crushed when soap is used. It was recognized that a soap with good shelf life and good aroma when used could be obtained.

However, for microcapsules that fall outside the above-mentioned crushing range, if the crushing strength does not reach 6 kg 7 cm, as in Comparative Example 1, most of the capsules will be crushed during production, and the soap composition itself will have a strong fragrance but will not last long. On the other hand, as in Comparative Example 2, the crushing strength is 26 kl/cw.
When it exceeds 1", the microcapsules are not crushed even during use, and the fragrance is extremely poor, so that a sufficient feeling of use as a soap cannot be obtained.

[Example 4] Soap hese (balm oil/coconut oil/castor oil = 70/2
Sodium soap obtained from fats and oils in a ratio of 0/10)
7011 and sodium isethionate 28.9, using titanium oxide 0.259 and vitamin D as the core material,
Capsules produced by trapping in the same manner as in Examples 1 to 3 were 0.61
1 was added, mixed, and molded soap was obtained. The capsule has a crushing strength of 14 kg/crti2. Particle size: 100~
140 μm, core material content nia 8-884.

The obtained soap was packaged and left indoors for three years, but no discoloration or deterioration due to vitamin D was observed.

Applicant: Lion Corporation

Claims (1)

[Claims] Microcapsules having a crushing strength within the range of 1.6 to 26 kg/cm^2 are contained in an amount of 0.1 to 10% by weight of the entire composition.
A solid soap composition characterized by containing dispersed soap. 2. The solid soap composition according to claim 1, wherein the microcapsules have a particle size of 30 to 300 μm. 3. The solid soap composition according to claim 1 or 2, wherein the core substance content in the microcapsules is 70 to 96% by weight.