JP5390090B2 - Bar soap composition - Google Patents

Description

  The present invention relates to a solid soap composition, and more particularly, to an excellent solid soap composition capable of ensuring the bactericidal effect and stability of a cationic bactericidal agent blended in the solid soap composition.

In order to give a disinfecting and sterilizing effect to the bar soap, for example, a cationic bactericide (benzalkonium chloride, cetylpyridinium chloride, etc.) may be blended with the bar soap. However, these fungicides form a complex with fatty acid salts in soap, so that the bactericidal effect is not sufficiently exhibited, and these fungicides disperse unevenly in soap over time, so There was a problem that the stability of the agent could not be maintained.
In order to solve such problems, conventionally, for example, higher fatty acid salts, cationic fungicides, amphoteric surfactants, amine oxide surfactants, alkanolamide surfactants, and amide amino acid surfactants. A detergent composition containing at least one selected from an activator and a cationic polymer (Patent Document 1); a higher fatty acid salt, a cationic fungicide, an amphoteric surfactant, an amine oxide surfactant, Detergent composition containing at least one selected from alkanolamide surfactants and amide amino acid surfactants and higher fatty acids (Patent Document 2); higher fatty acid salts, cationic fungicides, and specific However, in these techniques, the bactericidal effect of the cationic bactericidal agent in solid soap is reported. The and stability, it was not sufficiently secured.

  Therefore, the present condition is that the outstanding solid soap composition which can ensure the bactericidal effect and stability of the cationic disinfectant mix | blended in the solid soap composition is still calculated | required.

JP-A-10-183193 Japanese Patent Laid-Open No. 10-176194 Japanese Patent Laid-Open No. 10-147799

  An object of the present invention is to solve the conventional problems and achieve the following objects. That is, an object of the present invention is to provide an excellent solid soap composition that can ensure the bactericidal effect and stability of the cationic bactericidal agent blended in the solid soap composition.

  As a result of intensive studies to achieve the above object, the present inventors have determined that (A) a higher fatty acid salt, (B) a cationic fungicide, and (C) an amphoteric polymer each have a specific content. It was found that the antibacterial effect and stability of the cationic disinfectant blended in the solid soap composition can be ensured by the inclusion in the solid soap composition, and the present invention has been completed. In the present invention, the (C) amphoteric polymer is a monomer unit of (meth) acrylic acid, (meth) acrylic acid ester, dimethyldiallylammonium chloride, (meth) acrylamide, vinyl chloride, vinyl acetate, vinyl. An amphoteric polymer comprising a copolymer containing two or more selected from alcohol, olefin, styrene, methacrylamidopropyltrimethylammonium chloride, and acrylamidomethylpropanesulfonic acid, wherein the (meth) in the monomer unit An amphoteric polymer having a molar ratio of acrylic acid of 0.05 to 0.2 is used.

The present invention is based on the above findings by the present inventors, and means for solving the above problems are as follows. That is,
<1> (A) a higher fatty acid salt represented by the following general formula (1);
R ¹ COOM (1)
(In the formula, R ¹ represents an alkyl group or alkenyl group having 7 to 21 carbon chains, and M represents an alkali metal, an alkaline earth metal, an amine, or a basic amino acid.)
(B) a cationic fungicide represented by at least one of the following general formula (2) and the following general formula (3);
(In the formula, R ² and R ³ each represent an alkyl group or alkenyl group having 8 to 18 carbon atoms, and Z ¹ and Z ² each represent a halogen atom, an amino acid, or a fatty acid.)
(C) In monomer units, (meth) acrylic acid, (meth) acrylic acid ester, dimethyldiallylammonium chloride, (meth) acrylamide, vinyl chloride, vinyl acetate, vinyl alcohol, olefin, styrene, methacrylamidopropyltrimethylammonium chloride, And an amphoteric polymer comprising a copolymer containing two or more selected from acrylamidomethylpropanesulfonic acid, wherein the molar ratio of the (meth) acrylic acid in the monomer unit is 0.05 to 0.2. An amphoteric polymer that is
And the content of the (A) higher fatty acid salt is 60 to 95% by mass, the content of the (B) cationic fungicide is 0.1 to 1% by mass, (C) The solid soap composition is characterized in that the content of the amphoteric polymer is 0.1 to 2% by mass.
<2> (B) The solid soap composition according to <1>, wherein the cationic fungicide is at least one of benzalkonium chloride and cetylpyridinium chloride.
<3> (C) The amphoteric polymer has a molar ratio of acrylic acid in monomer units of 0.05 to 0.2.
(I) acrylic acid / dimethyldiallylammonium chloride copolymer,
(Ii) acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer, and
(Iii) The solid soap composition according to any one of <1> to <2>, which is at least one of acrylic acid / methacrylamidopropyltrimethylammonium chloride / acrylamide copolymer.

  According to the present invention, the conventional problems can be solved, the object can be achieved, and the bactericidal effect and stability of the cationic bactericidal agent blended in the solid soap composition can be ensured. An excellent bar soap composition can be provided.

(Soap soap composition)
The solid soap composition of the present invention comprises (A) a higher fatty acid salt, (B) a cationic bactericidal agent, and (C) an amphoteric polymer, and if necessary, other components as appropriate. It contains.

<(A) Higher fatty acid salt>
The higher fatty acid salt is mainly blended as a cleaning base material for the solid soap composition.
The higher fatty acid salt is a higher fatty acid salt represented by the following general formula (1), and any one of them may be used alone, or two or more may be used in combination.
R ¹ COOM (1)
In the general formula (1), R ¹ represents an alkyl group or alkenyl group having 7 to 21 carbon chains.
In the general formula (1), M represents an alkali metal, an alkaline earth metal, an amine, or a basic amino acid. Examples of the alkali metal include sodium and potassium. Examples of the alkaline earth metal include magnesium and calcium. Examples of the amine include monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methylpropanol, 2-amino-2-methylpropanediol, and the like. Examples of the basic amino acid include lysine and arginine. Among these, sodium, potassium, and triethanolamine are preferable in terms of foam performance and fragrance.

The higher fatty acid salt is a salt of higher fatty acid, but the raw material for obtaining the higher fatty acid salt is not particularly limited and may be appropriately selected depending on the intended purpose. For example, higher fatty acid, oil and fat, higher fatty acid A methyl ester or the like can be used. Examples of the higher fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, palmitooleic acid, linoleic acid, linolenic acid, elaidic acid and other linear fatty acids, isostearic acid , Branched chain fatty acids such as 2-ethylhexylic acid and octyldodecanoic acid, and mixtures thereof. The higher fatty acids also include naturally occurring fatty acid mixtures such as palm kernel oil fatty acids, palm oil fatty acids, coconut oil fatty acids, and beef tallow fatty acids. Examples of the oils and fats include vegetable oils such as palm kernel oil, palm oil, coconut oil, soybean oil, olive oil, and animal oils such as beef tallow.
The solid soap composition does not necessarily have to be an embodiment in which the higher fatty acid salt itself is blended in the solid soap composition. For example, the above-described raw materials and bases are each independently used. The thing of the aspect which forms the said higher fatty acid salt in the said solid soap composition by mix | blending in the said soap bar composition may be sufficient.

The higher fatty acid salt is a ratio of a saturated higher fatty acid salt having R ¹ of 11 or more in the general formula (1) to an unsaturated higher fatty acid salt having R ¹ of 17 or more in the general formula (1) ( (Mass ratio) is preferably a saturated higher fatty acid salt having R ¹ of 11 or more / unsaturated higher fatty acid salt having R ¹ of 17 or more = 2.0 to 9.0, and preferably 3.0 to 4.0. It is more preferable. If the ratio is less than 2.0, it may be inferior in terms of foaming and shape retention, and if it exceeds 9.0, it may be inferior in terms of lack of skin irritation. On the other hand, when the ratio is in a more preferable range, it is advantageous in that it is more excellent in foaming, foam creaminess, shape retention, and lack of skin irritation.
As the fatty acid composition of the higher fatty acid salt, the proportion of unsaturated fatty acids is preferably 35% by mass or less, more preferably 25% by mass or less, based on the total amount of fatty acids. When the ratio of the unsaturated fatty acid exceeds 35% by mass, it may be inferior in that it does not melt. On the other hand, when the ratio of the unsaturated fatty acid is within a more preferable range, it is advantageous in that it is superior in that it does not melt. In addition, as a minimum of the ratio of the said unsaturated fatty acid, it is preferable that it is 5 mass% or more with respect to fatty acid total amount. When the ratio of the unsaturated fatty acid is less than 5% by mass, the soap may be inferior when used for a long time.

  As content of the said higher fatty acid salt, it is 60-95 mass% in the said solid soap composition, and 70-90 mass% is preferable. If the content is less than 60% by mass, sufficient hardness may not be obtained, and if it exceeds 95% by mass, the productivity may be inferior. On the other hand, when the content is within the preferable range, it is advantageous in that sufficient hardness can be obtained and the manufacturability is more excellent.

<(B) Cationic fungicide>
The cationic disinfectant is blended mainly for the purpose of imparting a disinfecting effect to the solid soap composition.
The cationic fungicide is a cationic fungicide represented by at least one of the following general formula (2) and the following general formula (3), and any one of them may be used alone. More than one species may be used in combination.
In the general formula (2) and the general formula (3), R ² and R ³ each represent an alkyl group or an alkenyl group having 8 to 18 carbon atoms.
In the general formula (2) and the general formula (3), Z ¹ and Z ² each represent a halogen atom, an amino acid, or a fatty acid.

  Specific examples of the cationic fungicide include a benzalkonium salt represented by the general formula (2), a cetylpyridinium salt represented by the general formula (3), and the like. From the viewpoint of safety, benzalkonium chloride and cetylpyridinium chloride are preferable.

  As content of the said cationic disinfectant, it is 0.1-1 mass% in the said solid soap composition, and 0.15-0.5 mass% is preferable. If the content is less than 0.1% by mass, the bactericidal effect may be weak, and if it exceeds 1% by mass, the skin may be stimulated. On the other hand, when the content is within a preferable range, it is advantageous in that a sufficient bactericidal effect is obtained and the skin irritation is further improved.

<(C) Amphoteric polymer>
The amphoteric polymer mainly exerts the bactericidal effect of the cationic bactericide in the solid soap composition, and also suppresses the uneven dispersion of the cationic bactericide and maintains its stability. Formulated for the purpose.
The amphoteric polymer is a monomer unit (meth) acrylic acid, (meth) acrylic acid ester, dimethyldiallylammonium chloride, (meth) acrylamide, vinyl chloride, vinyl acetate, vinyl alcohol, olefin, styrene, methacrylamidopropyl chloride An amphoteric polymer comprising a copolymer containing two or more selected from trimethylammonium and acrylamidomethylpropanesulfonic acid, wherein the molar ratio of the (meth) acrylic acid in the monomer unit is 0.05 to It is an amphoteric polymer of 0.2, and any one of them may be used alone, or two or more may be used in combination.
The molar ratio of (meth) acrylic acid in monomer units in the amphoteric polymer is a value obtained by drying the amphoteric polymer, dissolving it in heavy water, performing 1H-NMR measurement, and calculating the integral value. It is.

  The amphoteric polymer is not particularly limited as long as it is an amphoteric polymer composed of a copolymer as described above, and can be appropriately selected according to the purpose. Among them, MERQUAT295 (acrylic acid / dimethyldiallylammonium chloride) Copolymer (5/95, molar ratio of acrylic acid in monomer unit 0.05); manufactured by Nalco, MERQUAT280 (acrylic acid / dimethyldiallylammonium chloride copolymer (20/80, acrylic acid in monomer unit) MOLQUAT PLUS 3331 (acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer (17/30/35, molar ratio of acrylic acid in monomer units 0.17)); Nalco MERQUAT 2003 (acrylic acid / meta chloride) Rylamidopropyltrimethylammonium / acrylamide copolymer (10/40/50, molar ratio of acrylic acid in monomer units 0.1); preferably NALCO), MERQUAT295 (acrylic acid / dimethyldiallylammonium chloride copolymer) (5/95, molar ratio of acrylic acid in monomer units 0.05); manufactured by Nalco) is more preferable.

  As content of the said amphoteric polymer, it is 0.1-2 mass% in the said solid soap composition, and 0.1-1 mass% is preferable. If the content is less than 0.1% by mass, the effect of suppressing the non-uniform dispersion of the cationic fungicide may not be recognized. If the content exceeds 2% by mass, the soap does not melt. There are some inferior points. On the other hand, when the content is within a preferable range, it is advantageous in that it is excellent in the effect of suppressing the non-uniform dispersion of the cationic bactericidal agent, and more excellent in the melting of the soap.

<Other ingredients>
In addition to the components (A) to (C), the solid soap composition may contain other components within a range that does not hinder the effects of the present invention. The other components are not particularly limited and can be appropriately selected according to the purpose from those usually used in solid soap compositions. For example, oils such as higher alcohols and silicone oils, lanolin derivatives, proteins Derivatives, drugs such as vitamins, bactericides other than cationic fungicides, anti-inflammatory agents such as glycyrrhizic acid and allitein, antioxidants, metal sequestering agents, ultraviolet absorbers, animal and plant extracts or their derivatives, pigments, fragrances (fragrances) Composition), pigments, inorganic powders and the like. There is no restriction | limiting in particular also as content of the said other component, In the range which does not prevent the effect of this invention, it can select suitably.
There is no restriction | limiting in particular as a fragrance | flavor raw material in the said fragrance | flavor composition, For example, by citing the list | wrist of the fragrance | flavor raw material as described in [0027]-[0045] of Unexamined-Japanese-Patent No. 2002-128658, this indication is disclosed. To be part of Moreover, as said fragrance | flavor composition, the fragrance | flavor composition AD of Tables 8-14 of Unexamined-Japanese-Patent No. 2002-309291 can also be used conveniently.

<Manufacturing>
There is no restriction | limiting in particular as a manufacturing method of the said bar soap composition, It can manufacture according to a conventional method, Specifically, it can manufacture as follows, for example. In the kneader, various higher fatty acids are mixed, heated to 90 ° C. and dissolved, and then stirred while adding 48% sodium hydroxide to completely neutralize the higher fatty acids, and (A) a higher fatty acid salt and To do. If necessary, a higher fatty acid, a chelating agent, and purified water are further added to the higher fatty acid salt and mixed uniformly to obtain a soap paste having a water content of about 30%. Thereafter, the temperature of the soap paste is increased to 120 to 140 ° C. through a heat exchanger, and the moisture is dried to about 10% by spraying in a vacuum drying tower with a degree of vacuum controlled to 13330 to 18662 Pa (100 to 140 mmHg). It is processed into a pellet form through a shaft type single-stage pudder, and this is used as a soap base. After adding (B) cationic disinfectant, (C) amphoteric polymer, colorant, fragrance, etc. to this soap base, kneaded with a two-shaft two-stage prodder whose temperature is adjusted as necessary It can be beaten to obtain a solid soap composition.

<Application>
The use of the solid soap composition is not particularly limited and can be appropriately selected depending on the purpose. For example, it is widely applied to solid soaps for various uses such as whole body washing, finger washing, face washing and the like. can do. Among them, the solid soap composition is particularly suitable as a medicinal solid soap for the purpose of sterilization and disinfection of fingers and the like because it is excellent in the bactericidal effect and stability of the cationic bactericidal agent blended in the solid soap composition. is there.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited to these Examples at all. In the following examples and comparative examples, unless otherwise specified, “%” represents “mass%” and the ratios represent mass ratios. In addition, the component amounts are all converted into pure amounts.

(Examples 1-14, Comparative Examples 1-6)
According to the composition shown to the following Tables 1-3, Examples 1-14 and the solid soap composition of Comparative Examples 1-6 were manufactured with the following manufacturing method. In addition, Tables 4 to 5 below show the fatty acid composition of the higher fatty acid (A ′) used in each Example and Comparative Example, and Table 6 below shows (C) amphoteric used in each Example and Comparative Example. Details of polymers and other polymers are given.
About each obtained soap bar composition, the residual rate (stability) of the cationic fungicide and the bactericidal effect were evaluated as follows. A result is combined with Tables 1-3 and shown.

-Manufacturing method of solid soap composition-
Various (A ') higher fatty acids are mixed in a kneader, heated to 90 ° C and dissolved, and then stirred while adding 48% sodium hydroxide to completely neutralize the higher fatty acids, (A) Higher fatty acid salt. A higher fatty acid, a chelating agent, and purified water were further added to the higher fatty acid salt as necessary, and mixed uniformly to obtain a soap paste having a water content of about 30%. Thereafter, the soap paste is heated to 120 to 140 ° C. through a heat exchanger, and dried to a water content of about 10% by spraying in a vacuum drying tower in which the degree of vacuum is controlled to 13330 to 18662 Pa (100 to 140 mmHg). It was processed into a pellet form through a single-stage plodder, and this was used as a soap base. To this soap base, (B) a bactericide solution obtained by dissolving a cationic bactericide in purified water, a coloring agent, a fragrance and the like were added and mixed uniformly. Furthermore, (C) the amphoteric polymer was added to this mixture and mixed uniformly, and then kneaded with a twin-screw two-stage plotter whose temperature was adjusted as necessary. This kneaded product was stamped to obtain a solid soap composition.

[Evaluation of residual rate (stability) of cationic fungicide]
Immediately after production and for each solid soap composition stored at 50 ° C. for 1 month, 1 g of a soap sample was taken from the center and solubilized with 80% acetone solution. A part of this solution was subjected to liquid chromatography GL-7400 (GL Sciences Inc.), Shiseido Capcellpak SCX φ4.6 × 150 mm as a column, water / acetonitrile (470/530) as a mobile phase, and a detection wavelength of 210 μm. (B) The cationic fungicide was quantified. As shown in the following formula, (B) the cationic fungicide in the solid soap composition after storage for 1 month at 50 ° C. with respect to the quantitative value (A0) of the (B) cationic fungicide in the solid soap composition immediately after production The ratio of the quantitative value (A1) was defined as the residual ratio, and when the residual ratio was 90% or more, it was evaluated that “stability was maintained”.
Residual rate of cationic fungicide (%) = A1 / A0 × 100 (formula)

[Evaluation of bactericidal effect]
The test bacterium Escherichia coli was pre-cultured at 30 ° C. for 24 hours using a standard agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.). The pre-cultured bacterial solution is suspended in sterile physiological saline, 1 × 10 ⁸ cells / mL test bacteria are prepared, 0.5 mL of this bacterial solution is mixed with 20 mL of a standard agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.), The mixture was poured into a petri dish to prepare an agar medium for sterilization test. A sterilization cup having a diameter of 8 mm was placed in the center of the agar medium for sterilization test, and 200 μL of a 20% solution of each solid soap composition was poured. This was cultured at 30 ° C. for 64 hours, and the bactericidal effect was evaluated by measuring the diameter (mm) of the inhibition circle formed on the agar.

The fatty acids in Table 5 are as follows. C8: caprylic acid, C10: capric acid, C12: lauric acid, C14: myristic acid, C16: palmitic acid, C18: stearic acid, C18F1: oleic acid, C18F2: linoleic acid

  From the results of Tables 1 to 3, Examples 1 to 14 containing (A) a higher fatty acid salt, (B) a cationic fungicide, and (C) a specific amphoteric polymer within a specific content range, respectively. The solid soap composition of the present invention is a solid excellent in the residual rate (stability) of the cationic fungicide and the bactericidal effect as compared with the solid soap compositions of Comparative Examples 1 to 6 that do not satisfy at least one of the above requirements. It was found to be a soap composition.

(Example 15: Solid soap composition for sterilization)
A solid soap composition for sterilization and disinfection having the following composition was produced in the same manner as described above.
mass(%)
Higher fatty acid salt 1 ^* 80.0
Amphoteric polymer 1 ^** 0.5
Benzalkonium chloride ^# 0.15
Palm kernel oil fatty acid 3.5
Edetic acid disodium 0.02
Hydroxyethane diphosphonic acid 0.1
Glycerin 1.0
Isopropylmethylphenol 0.1
Titanium dioxide 0.2
Dye 0.005
Fragrance B 0.3
Fragrance C 0.3
Fragrance D 0.3
Purified water balance
Total 100.00
^* Higher fatty acid salt 1 is a sodium salt of higher fatty acid 1 (75% by mass of palm kernel oil fatty acid and 25% by mass of palm oil fatty acid) described in Table 4 (the production method is the same as described above).
^** Amphoteric polymer 1 is an acrylic acid / dimethyldiallylammonium chloride copolymer listed in Table 6 (5/95, molar ratio of acrylic acid in monomer units 0.05) (MERQUAT 295, NALCO) is there.
^# Benzalkonium chloride, in the general formula (2), the alkyl composition ^{(R 2)} is a C12 / C14 = 2/1 (weight ratio), ^{Z 1} is a cationic bactericidal agent showing chlorobenzene.

  The bar soap composition of Example 15 was evaluated in the same manner as described above. The results are shown in Table 7. The solid soap composition of Example 15 was found to be a solid soap composition excellent in the residual rate (stability) of the cationic fungicide and the bactericidal effect.

  The details of each component used in the examples and comparative examples are shown in Table 8 below. The details of (C) the amphoteric polymer and other polymer components are as described in Table 6 above.

  The bar soap composition of the present invention can be widely applied to bar soaps for various uses such as whole body cleaning, finger cleaning, and face cleaning. Especially, the said solid soap composition is especially suitable for the medicinal solid soap for the purpose of disinfection and disinfection, such as fingers.

Claims (4)

(A) an alkali metal salt or amine salt of a higher fatty acid represented by the following general formula (1 ′) ;
R ¹ COO H (1 ')
(In the formula, ^{R 1} indicates to an alkyl or alkenyl group having a carbon chain 7 to 21.)
(B) a cationic fungicide represented by at least one of the following general formula (2) and the following general formula (3);
(In the formula, R ² and R ³ each represent an alkyl group or alkenyl group having 8 to 18 carbon atoms, and Z ¹ and Z ² each represent a halogen atom, an amino acid, or a fatty acid.)
(C) In monomer units, (meth) acrylic acid, (meth) acrylic acid ester, dimethyldiallylammonium chloride, (meth) acrylamide, vinyl chloride, vinyl acetate, vinyl alcohol, olefin, styrene, methacrylamidopropyltrimethylammonium chloride, And an amphoteric polymer comprising a copolymer containing two or more selected from acrylamidomethylpropanesulfonic acid, wherein the molar ratio of the (meth) acrylic acid in the monomer unit is 0.05 to 0.2. An amphoteric polymer that is
And (A) the content of the alkali metal salt or amine salt of the higher fatty acid is 60 to 95% by mass, and the content of the (B) cationic fungicide is 0.1 to 1 A solid soap composition, characterized in that the content of the amphoteric polymer (C) is 0.1 to 2% by mass. (A) a higher fatty acid salt represented by the following general formula (1);
R ¹ COOM (1)
(Wherein R ¹ Represents an alkyl group or an alkenyl group having 7 to 21 carbon chains, and M represents an alkali metal. )
(B) a cationic fungicide represented by at least one of the following general formula (2) and the following general formula (3);
(Wherein R ² And R ³ Each represents an alkyl or alkenyl group having 8 to 18 carbon atoms; ¹ And Z ² Each represents a halogen atom, an amino acid, or a fatty acid. )
(C) In monomer units, (meth) acrylic acid, (meth) acrylic acid ester, dimethyldiallylammonium chloride, (meth) acrylamide, vinyl chloride, vinyl acetate, vinyl alcohol, olefin, styrene, methacrylamidopropyltrimethylammonium chloride, And an amphoteric polymer comprising a copolymer containing two or more selected from acrylamidomethylpropanesulfonic acid, wherein the molar ratio of the (meth) acrylic acid in the monomer unit is 0.05 to 0.2. An amphoteric polymer that is
And the content of the (A) higher fatty acid salt is 60 to 95% by mass, the content of the (B) cationic fungicide is 0.1 to 1% by mass, (C) The content of an amphoteric polymer is 0.1-2 mass%, The solid soap composition characterized by the above-mentioned. (B) The solid soap composition according to claim 1, wherein the cationic fungicide is at least one of benzalkonium chloride and cetylpyridinium chloride. (C) The amphoteric polymer has a molar ratio of acrylic acid in monomer units of 0.05 to 0.2,
(I) acrylic acid / dimethyldiallylammonium chloride copolymer,
(Ii) acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer, and
The solid soap composition according to any one of claims 1 to 3, which is (iii) at least one of acrylic acid / methacrylamidopropyltrimethylammonium chloride / acrylamide copolymer.