JPS63225700A - Solid cleaner 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 (Industrial Application Field) The present invention relates to a solid detergent, and more specifically, a solid detergent that is less irritating to the skin and is dissolvable (does not disintegrate when dissolved).
The present invention relates to a solid detergent that has improved frictional solubility, adhesion when left in a container after use (hereinafter referred to as adhesion), and is comfortable to use and suitable for use on the face and body.

(Prior Art) Currently, most of the raw materials for solid body cleansers are fatty acid salt soaps. However, this fatty acid salt based soap has the following drawbacks.

(a) In hard water, water-insoluble scum is generated and the foaming power and cleaning power are significantly reduced.

(b) It has a high pH of 10 to 11, which is not desirable for people who are sensitive to alkalis.

Soaps that compensate for these drawbacks include neutral soaps and weak acid soaps.

For example, as neutral soaps, there are solid soaps based on straight-set alkylbenzene sulfonates and lauryl sulfates, but these do not form scum even in hard water and have excellent foaming and cleaning power. However, it has a large fat content and is highly irritating to the skin, and is also highly dissolvable and has high friction solubility.

However, as a neutral soap, straight alpha olefin sulfonate is less irritating to the skin than the above two. In addition, it does not generate scum even in hard water and has excellent detergency and foaming power, but it has the drawback of being highly dissolvable and having high friction solubility.

On the other hand, N-acyl acidic amino acid salts are different from those mentioned above; their pH is weakly acidic (5 to 7), which is the same as that of skin, so they are less irritating to the skin, and their performance in hard water is almost the same. It's satisfying.

However, this also has the problem of high disintegration and high frictional solubility, such as adhesion to the soap container when it is left in the soap container after use.

Therefore, the adhesion of this type of solid detergent to soap containers,
Many studies have been carried out to improve the deficiencies regarding dissolution properties, frictional solubility, etc., but no fully satisfactory results have been obtained.

On the other hand, soaps based on acylisethionates that are weakly acidic to neutral and less irritating to the skin can be considered, but although acylisethionates have good performance in hard water, they are also highly dissolvable. However, it has practical disadvantages such as high friction solubility and strong adhesion to soap containers.

(Problems to be Solved by the Invention) Therefore, as a result of intensive research aimed at improving this drawback, the present inventors added a specific amount of alkyl sulfosuccinate (hereinafter abbreviated as AI8 salt) to acyl isethionate (hereinafter abbreviated as AI8 salt). By blending AI8 salt (hereinafter abbreviated as AS8 salt) with higher alcohol, higher fatty acid, and water, it is possible to improve all of the above drawbacks while taking advantage of the features of AI8 salt, and to make an excellent solid cleaning agent industrially advantageous. discovered that it could be manufactured,
The invention has been completed.

The purpose of the present invention is to cause less irritation to the skin, to be dissolvable,
The object of the present invention is to provide a solid detergent composition with improved frictional solubility, feeling of use, and adhesion.

(Means for solving the problems) That is, the present invention provides the following (A), (B), ((
This is a solid detergent composition containing five components: (1), (CD), and (E).

(A) Acyl isethionate: 40-75% by weight
■) Alkyl sulfosuccinate: 10-46% by weight (Q Higher alcohol: 2-20% by weight (B) Higher fatty acid = 2-20% by weight
(D) Water = 1 to 18% by weight The AI8 salt used as a prisoner component in the present invention is preferably a compound represented by the following general formula (1), and one or more thereof are used in combination, and the composition The amount in minutes is 40-75% by weight.

Ordinary-C-0-OH2-OH2-808M...
・(1) (In the above formula, it is an alkyl group or an alkenyl group having 9 to 18 carbon atoms, M is an alkali metal, NH4
Or a cation derived from an alkanol atom. ) (2) The above-mentioned AS8 salt used as a component is preferably a compound represented by the following general formula (1), and one or more of them are used in combination, and the amount in the composition is 10
~46% by weight.

几-CH2-0-C! -CH-CH, -COOMI・・
...(1)■08M2 (In the above formula, R is an alkyl group or alkenyl group having 11 to 18 carbon atoms, and MleM2 is an alkali metal, NH
4 or a cation derived from an alkanol atom. ) (The higher alcohol used as the Q component has 1 carbon number.
2 to 22 saturated aliphatic alcohols are preferred, and one or more of them are used in combination, and the amount in the composition is 2 to 22.
~20% by weight. If it is less than 2% by weight, the usability is 9.
Peelability from soap container (adhesion) 9 Workability (release from mold)
, meltability and frictional solubility become worse, 20i1! If the amount exceeds %, the feeling in use, foaming power, and workability (moldability) deteriorate, which is not preferable.

In addition, the higher fatty acids of component (2) have a total carbon number of 12 to 22.
These saturated fatty acids are preferred, and one or more of them are used in combination, and the amount in the composition is from 2 to 20% by weight. If it is less than 2% by weight, the feeling of use 2 will be poor in peelability (adhesion) from the soap container, disintegration, and friction solubility; if it is more than 20% by weight, the feeling in use and foaming power 9 will be poor. (Moldability)

This is not preferable because it makes it difficult to release from the mold.

In order to solidify the composition of the present invention, 1 to 18% by weight of water, which is component (D), is required. The composition is made into a cylinder by adding water, and then it is rolled, mixed, brooder extruded,
To facilitate stamping and molding operations.

It is necessary to change the blending amount of water by changing the above-mentioned components (A) to (B), as well as the type and blending amount of optional components described later. However, if the blending amount exceeds 18%, the composition This is not preferable because it becomes soft and difficult to mold into a solid product.

Depending on the purpose of use (if necessary), the solid detergent composition of the present invention may contain moisturizing agents, superfatting agents, foaming agents, antioxidants, and fragrances that are used in general soaps.

Pigments, dyes, pF [adjusting agents, sequestering agents, bactericidal agents, and anionic surfactants other than the above-mentioned alkyl sulfosuccinates (straight alpha olefin sulfonates having 12 to 28 carbon atoms) that are mild to the skin. , N-acyl acidic amino acid salts such as N-long chain acylglutamate) 9 Ampholytic surfactants (imidacillin type, betaine type, WL-replaced amino acid type), higher fatty acid alkanolates (higher fatty acid monoethanolamide, higher Fatty acid diethanolate, etc., and other oily substances (lanolin, liquid paraffin.

Solid paraffin, etc.) may be used in combination within a range that does not impede the effects of the present invention.

The method for producing the solid detergent of the present invention includes using AIS salt and AIS salt.
The s2 salt, higher alcohol, higher fatty acid, and optionally the above-mentioned optional ingredients are mixed together with water in the coexistence state with heating if necessary, and after drying, kneaded using a roll and a brodder, A mechanical kneading method using extrusion and stamping is generally used, but it can also be manufactured using a frame drawing method.

(Effects of the present invention) The solid detergent of the present invention is 0) Good foaming power in both hard and soft water.

Demonstrates cleaning power and does not generate water-insoluble scum.

(b) It has a slightly acidic to neutral pH and is mild to the skin, does not irritate the skin, does not leave a stain or slimy feeling, is pleasant to use, and gives a moist feel to the skin after use.

(c) Compared to conventional synthetic solid detergents, it has less disintegrability;
Although its frictional solubility is low, it melts to an appropriate degree during use.

) After use, it will not stick strongly even if left in a soap box or on a smooth surface such as a tile.

(E) Good workability during manufacturing (moldability, mold release), skin irritation and feeling (moist feeling, light feeling, slimy feeling, etc.) when used continuously.2 From soap containers. The quality of the removability (adhesiveness to the soap container) was judged and answered in a questionnaire, and the evaluation was determined as follows.

Evaluation Criteria If the number of people who answered that the evaluation symbol is good is 18 Å or more ゛ ・・・・・・ ◎〃 is 14 to 17 people ・・・・・・ Or is 8 to 18 people ・・・... If △I is 7 Å or less ...... × Workability Check the ease of molding (during molding) of the solid cleaning agent (the tightness of the bar) and the separation of the soap mold. Determined by a skilled engineer.

Example 1 50% by weight of Al8-Na salt with Ctt, 20% by weight of A88-2 Na salt with R as cti, cetyl alcohol 6
% by weight, 7% by weight of stearyl alcohol, 10% by weight of stearic acid and 8% by weight of water were thoroughly kneaded with a roll,
Next, it was extruded into a rod shape using an extruder with the nozzle kept at 45°C.
The solid detergent of the present invention was obtained by molding with a molding machine.

Comparative Example 1 Next, for comparison, Mu88-2 Na salt with R of 011 was not blended, and 70% by weight of Mu8-Na salt with R of 011 was used in the same manner as in the present invention. A comparative solid cleaning agent was obtained.

Table 1 shows the results of testing these solid detergents as described above.

(+ blanks) As is clear from the results in Table 1, the solid detergent of the present invention has excellent disintegration properties, frictional solubility properties, and release properties from soap containers, foaming power, feeling of use, and skin irritation. superior to comparative products.

Examples 2 to 5 and Comparative Examples 2 to 5 Solid cleaning agents of Examples 2 to 5 and Comparative Examples 2 to 8 were obtained in the same manner as in Example 1 using the formulations shown in Table 2 below.

The test results are shown in Table 2.

As is clear from Table 2, the compositions of the present invention shown in Examples 2 to 5 were composed of Al5-Na with a pore size of C11 shown in Comparative Example 2.
More soluble than those molded only from salt.

The frictional solubility, frictional foaming power, feeling of use, and releasability from the soap container have been greatly improved.

In addition, Comparative Example 8 in which only water and A88 salt were blended, Comparative Example 6 in which only higher alcohol was blended, and Comparative Example 4 in which only higher fatty acid was blended, the workability, friction solubility, and feeling of use were lower than that of the comparative example without blending. Although it is slightly better than 2, it is insufficient, and the effect of using the mu-8 salt of the present invention and the mu-88 salt in combination with both a higher alcohol and a higher fatty acid (the present invention) is It shows that it is remarkable.

Moreover, from Comparative Examples 6 and 7, when the blending amount of higher alcohol or higher fatty acid exceeds 20% by weight, workability deteriorates.

It is clear that the frictional foaming power and the feeling of use are reduced.

Example 6 46% by weight of Al8-Na salt of eta + A of C11
20ffiffi% in 38-2, 5% by weight of stearyl alcohol, 2% lauric acid, 6% by weight of stearic acid.
, 5% by weight of cetanol, 1.0% by weight of glycerin, and 6% by weight of lauric acid jetanolamide.

Titanium oxide 0.16% by weight, fragrance 0.5% by weight, edetate tetrasodium tetrahydrate 0.1% by weight, purified water 10.
25! t% and molded in the same manner as in Example 1 to obtain a solid detergent of the present invention.

Example 7 Mu18-, where R is Ctt, 501 tfii% salt, C! 8-mu 88-2 20% by weight of Na salt, 2% by weight of lauryl alcohol, 2% by weight of cole, 8% stearyl alcohol, 8% by weight of stearic acid, 5% by weight of cetanol, 5% by weight of polyethylene glycol (average molecular weight 6000), oxidation 0.16% by weight of titanium, 0.6% by weight of fragrance, 0.1% by weight of tetrasodium edetate tetrahydrate.

6.253 at% of purified water was blended and molded in the same manner as in Example 1 to obtain a solid detergent of the present invention.

Example 8 R is 018 (7) AIR- salt 55 [ff15X, R is 011 As5-2Na salt 15 M%, stearyl alcohol 10%, stearic acid 5%, behenyl alcohol 1 mR9f; , 2 listyl alcohol 1 le 1
Weight%, Setanol 6%, Titanium oxide 0.16%, Fragrance 0.6%, Edetate tetrasodium tetrahydrate 0
．． 1! The solid detergent of the present invention was obtained by blending 6.25% by weight of I Seisui and molding in the same manner as in Example 1.

Example 9 Mul8-Na salt 403EJiX where R is 018, R is 01
1 A 88-2 Na salt 28Mm%, stearyl alcohol 7ml 11%, coconut oil alkyl N-carboxyethyl N-hydroxyethylimidazolinium betaine sodium 8wt 1%, myristic acid 1g%, stearic acid 6% by weight, behenin Acid 1% by weight.

Seranol 5% by weight, titanium oxide 0.16% by weight.

Fragrance 0.5% by weight, edetate tetrasodium tetrahydrate 0, 1
Weight%, 2,4.4-trichloro-2-hydroxydiphenyl ether 0.8% by weight, purified water 7.95
% by weight and molded in the same manner as in Example 1 to obtain a solid detergent of the present invention.

The solid detergents of the present invention obtained in Examples 6 to 9 above all had little irritation to the skin (◎) as in Examples 1 to 5, and the dissolution properties were 5.0 to 5.0. It is small within the range of 6.6, has a low friction solubility of 42 to 47, has sufficient foaming and cleaning power in hard water, has improved adhesion to soap containers, and has a good feel when used. (especially the slimy feeling) was significantly improved, and the feel after use was also extremely good.

Comparative Example 9 Isethionic acid Na salt with a strength of 011 60! Comparative Example 9 A solid detergent was obtained. The results are shown in Table 8.

Comparative example 10 Isethionic acid Na salt where R is Ctt 50:! JIX.

C12-014 alkanesulfonic acid Na salt 20M amount%
, cetyl alcohol 5% by weight, stearyl alcohol 7%
% by weight, 10% by weight of stearic acid, and 8M% by weight of water, and molded in the same manner as in Example 1 to obtain a solid detergent of Comparative Example 10. The results are shown in Table 8.

(Margins below) ', Near ' @ 3 For comparison of Table Example 1, 8S-2N'a where 8 is 011
Comparative Example 9, in which alkylbenzenesulfonic acid Na salt was blended instead of the salt, and Comparative Example 10, in which C12-014 alkanesulfonic acid Na salt was blended, had better moldability, mold release, and dissolution properties than Example 1. , frictional solubility, irritation to the skin, sliminess upon use, feel after use 9. Releasability from the soap container is poor.

Claims (1)

[Claims] (1) A solid detergent composition containing the following five components (A), (B), (C), (D), and (E). (A) Acyl isethionate 40-75% by weight (B) Alkyl sulfosuccinate 10-46% by weight (C) Alcohol 2-20% by weight (D) Higher fatty acid 2-20% by weight (E) Water 1-18% by weight %