JPS63154617A - Solid detergent composition - Google Patents

Abstract

PURPOSE:To obtain the titled composition, having hardly any irritancy to the skin and improved dissolving disintegration property, friction solubility as well as stickiness, good feeling of use and suitable for the face and body, by blending an alkyl sulfosuccinate with a higher alcohol and higher fatty acid. CONSTITUTION:A solid detergent composition containing (A) 47-95wt.% alkyl sulfosuccinate expressed by the formula (R is 12-14C alkyl or 12-14C alkenyl; M1 and M2 are alkali metal, NH4 or alkanolamine), (B) 2-20wt.% higher alco hol, preferably 14-22C saturated aliphatic alcohol, (C) 2-20wt.% higher fatty acid, preferably 14-22C saturated fatty acid and (D) 1-13wt.% water. The above-mentioned detergent is capable of exhibiting excellent foaming power and detergency even in either one of hard or soft water without forming water- insoluble scum, has a weak acidic neutral pH mild to the skin without skin irritancy and imparts moist touch to the skin after use.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a solid detergent, and more specifically, a solid detergent that is less irritating to the skin (dissolvable (dissolves)).
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.

(The blpH is as high as 10 to 11, which is not preferable for people who are sensitive to alkalis.

Soaps that compensate for these drawbacks include neutral soaps and weakly acidic soaps.

For example, as neutral surface kens, there are solid surface kens based on linear 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 dislodging force, is highly irritating to the skin, and has a high disintegration property and high frictional solubility.

However, as a neutral substance, linear 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 cleaning and foaming power.

It has the drawbacks of high meltability and high frictional solubility.

On the other hand, unlike the above, N-acyl acidic amino acid salts have a weakly acidic pH (5 to 7), which is the same as that of the skin.
It is less irritating to the skin, and its performance in hard water is almost satisfactory.

However, this also has the problem of high disintegration and high frictional solubility, such as adhesion to the soap container when 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 alkyl sulfosuccinates that are weakly acidic to neutral and less irritating to the skin can be considered, but although alkyl sulfosuccinates have good performance in hard water,
It still has disadvantages in practical terms, such as high meltability, high frictional solubility, and strong adhesion to soap containers.

(Problems to be Solved by the Invention) Therefore, as a result of intensive research in an attempt to improve this drawback, the present inventors have found that by blending specific amounts of higher alcohol and higher fatty acid with alkyl sulfosuccinate, The present invention has been completed by discovering that it is possible to improve all of the above-mentioned drawbacks while taking advantage of the features of alkyl sulfosuccinates, and to produce an excellent solid detergent with industrial utility.

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 that has improved friction solubility and adhesion and has a good feeling of use.

(Means for Solving the Problems) That is, the present invention is a solid detergent composition containing the following four components A, B, C, and D.

Alkyl sulfosuccinate: 47-95% by weight B) Higher alcohol: 2-20% by weight (QHigher fatty acid: 2-20% by weight 0 water
: 1 to 13% by weight The alkyl sulfosuccinate used as component A in the present invention has the following general formula (
The compounds represented by 1) are preferred, and one or more of them are used in combination, and the amount in the composition is 47 to 9
It is 5% by weight.

1] RC1(tOCICHC)12COOM+...
...(1) A group or an alkenyl group, M I, M
t is a cation derived from an alkali metal, NHa or an alkanolamine. ) The higher alcohol used as component B has 14 or more carbon atoms.
22 saturated aliphatic alcohols are preferred, and one or more of them are used in combination, and the amount in the composition ranges from 2 to 20.
Weight%. If it is less than 2% by weight, the usability 2. Peelability from the soap container (adhesion) 3. Workability (release from mold), disintegration, and friction solubility will be poor; if it is more than 20% by weight, the usability, Foaming power 1 Workability (moldability) deteriorates, so it is not preferable.

The higher fatty acids of component C are preferably saturated fatty acids having a total carbon number of 14 to 22, and one or more of them are used in combination, and the amount in the composition is 2 to 20.
Weight%. If it is less than 2% by weight, the feeling of use will be poor (1) Peelability (adhesion) from the soap container, disintegration, and friction solubility will be poor; if it is more than 20% by weight, the feeling of use, foaming power, and workability will be poor. (Moldability.

This is not preferable because it will cause a problem with mold release.

In order to solidify the composition of the present invention, 1 to 13% by weight of water, which is component D, is required. The addition of water makes the composition visible and facilitates roll cross-extrusion, brooder extrusion, and stamping operations. It is necessary to change the amount of water added by changing the type and amount of the above-mentioned A component and B component, as well as optional ingredients described later, but if the amount exceeds 1.3%, the composition will become soft. This is not preferable because it makes it difficult to mold the solid material.

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, pH adjusters, sequestering agents, and anionic surfactants (linear alpha olefin sulfonates having 12 to 28 carbon atoms) that are mild to the skin and other than the alkyl sulfosuccinates mentioned above.

N-acyl acidic amino acid salts such as N-long chain acylglutamates) 5 Ampholytic surfactants (imidacillin type, betaine type, substituted amino acid type), higher fatty acid alkanolamides (higher fatty acid monoethanolamide, higher fatty acid jetanolamide, etc.) ), other oily substances (lanolin, liquid paraffin, solid paraffin, etc.) can be combined 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 involves mixing an alkyl sulfosuccinate, a higher alcohol, a higher fatty acid, and optionally the above-mentioned optional components in the coexistence of water with heating if necessary. After drying, a mechanical kneading method is generally used in which the product is kneaded, extruded, and stamped using rolls and a pro-ladder, but it can also be manufactured by a frame drawing method.

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

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

(b) The pH is weakly acidic to neutral, it is mild to the skin, does not irritate the skin, and has a good feeling of use, giving the skin a moist feel after use.

(c) Compared to conventional synthetic solid detergents, it is less dissolvable and has lower frictional solubility, but it dissolves to an appropriate degree when used.

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

(E) Workability during manufacturing (moldability, release from mold) is good, and manufacturing is extremely easy.

(Example) Next, the structure and effects of the present invention will be specifically explained by showing Examples and Comparative Examples. , workability, and practical tests (skin irritation, foaming, feeling of use, and removability from soap containers).

■Frictional solubility: It was carried out according to Jll-3304-1956.

■Dissolution property (X) The solid detergent was suspended in water at 20° C. for 2 hours and the softened portion was scraped off with a spatula, and the weight change was expressed as a percentage.

■It was carried out according to the friction foaming Crab Willsmann method. (Effective concentration 0.25
%, 40℃) ■Practical test: Skin irritation and foaming when 20 women (panelists) used a solid detergent for one week continuously.

Feelings of use (moist feeling, light feeling, etc.) 9 The quality of the peelability from the soap container (adhesion to the soap container) was judged, and a questionnaire was answered, 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... ◎〃
When there are 14 to 17 people... O When there are 8 to 13 people... △ When 〃 is 1 Å or less... ×■ Workability: When manufacturing solid cleaning agents A skilled engineer judged the ease of molding (during molding), the tightness of the bar), and the ease of release from the soap mold.

Example 1 70 parts by weight of disodium lauryl succinate, 5 parts by weight of cetyl alcohol, 7 parts by weight of stearyl alcohol, 10 parts by weight of stearic acid and 8 parts by weight of water were thoroughly kneaded using a small roll, and then the die was kept at 45°C. The solid detergent of the present invention was obtained by extruding it into a rod shape using a small extruder and molding it using a molding machine.

Comparative Example 1 Next, for comparison, a comparative example was prepared in the same manner as in the above Zero Start-10 except that sodium N-mixed fatty acid acylglutamate was used instead of disodium lauryl sulfosuccinate. A solid detergent was obtained.

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

As is clear from the results in Table 1, the solid detergent of the present invention is superior to the comparative products in terms of disintegration, frictional solubility, peelability from a soap container, frictional foaming power, and range of use. Are better.

Examples 2 to 5 and Comparative Examples 2 to 5 Solid cleaning agents of Examples 2 to 5 and Comparative Examples 2 to 5 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 are more dissolvable than the composition shown in Comparative Example 2 in which only the alkyl sulfosuccinate is molded.

Significant improvements have been made in friction solubility, friction foaming power, and ease of use and releasability from the soap container.

In addition, in Comparative Example 4, which contained only higher alcohol, and Comparative Example 3, which contained only higher fatty acids, the workability, friction solubility, and feeling of use were slightly better than those of Comparative Example 2, which did not contain it, but the results were insufficient. This shows that the effects of using the alkyl sulfosuccinate of the present invention in combination with both a higher alcohol and a higher fatty acid (the present invention) are remarkable. Furthermore, from Comparative Example 5, it is clear that when the blending amount of higher alcohol or higher fatty acid exceeds 20% by weight, workability, frictional foaming power, and feeling in use deteriorate.

Example 6 65 parts by weight of dipotassium lauryl sulfosuccinate, 5 parts by weight of stearyl alcohol, 8 parts by weight of stearic acid, 5 parts by weight of seranol, 1.0 parts by weight of glycerin, 5 parts by weight of lauric acid diethalamide, 0.0 parts by weight of titanium oxide. 15 parts by weight, fragrance 0.5 parts by weight, edetate tetrasodium tetrahydrate 0
．． 1 part by weight and 9.25 parts of purified water were blended and molded in the same manner as in Example 1 to obtain a solid detergent of the present invention.

Example 7 70 parts by weight of disodium myristyl sulfosuccinate, 5 parts by weight of stearyl alcohol, 8 parts by weight of stearic acid,
Seranol 5 parts by weight, polyethylene glycol 6000
(Average molecular weight 6000) 5 parts by weight, titanium oxide 0.1
5 parts by weight, 0.5 parts by weight of fragrance, 4 parts by weight of tetrasodium edetate
0.1 part by weight of water salt and 6.25 parts by weight of purified water were blended and molded in the same manner as in Example 1 to obtain a solid detergent of the present invention.

Example 8 65 parts by weight of disodium lauryl sulfosuccinate, 10 parts by weight of stearyl alcohol, 5 parts by weight of stearic acid,
1 part by weight of behenyl alcohol, 1 part of myristyl alcohol
parts by weight, 6 parts by weight of seranol, α- of C+4 to Cll1
5 parts by weight of sodium olefin sulfonate, 0.15 parts by weight of titanium oxide, 0.5 parts by weight of fragrance, 0.1 parts by weight of tetrasodium edetate tetrahydrate, and 6.25 parts by weight of purified water, and Example A solid detergent of the present invention was obtained by molding in the same manner as in 1.

Example 9 Disodium lauryl sulfosuccinate 63 parts by weight, stearyl alcohol 7 parts by weight, coconut oil alkyl N-carboxyethyl N-hydroxyethylimidasolinium betaine sodium 8 parts by weight, myristic acid 1 part by weight, stearic acid 6 parts by weight , 1 part by weight of behenic acid, 5 seranols
Parts by weight, 0.15 parts by weight of titanium oxide, 0.5 parts by weight of fragrance, 0.1 parts by weight of tetrasodium edetate tetrahydrate, 8 parts by weight of purified water
．． 25 parts by weight was blended 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 described above all have less irritation to the skin (◎>, dissolution properties are 5.0 to 5.0), as in Examples 1 to 5. It has a low friction solubility of 41 to 48, has sufficient foaming and cleaning power in hard water, has improved adhesion to soap containers, and is extremely comfortable to use. It was good (◎).

161 Procedural amendment (voluntary) February 13, 1988 Patent Application No. 302666 of 1988 2 Name of the invention Solid detergent composition 3 Relationship with the case of the person making the amendment Patent applicant address Tokyo 5-17-4 Sumida, Sumida-ku, 534
1-5-90 Tomobuchi-cho, Bejima-ku, Osaka Kanebo Co., Ltd. Patent Department Telephone (06) 9211251 4. Number of inventions increased by amendment None 6. Contents of amendment (1) Specification, page 13, No. 6 First, correct "Comparative Example 4" written in the row to "Comparative Example 3".

(2) Comparative Example 3J stated on page 13, line 7 of the specification is amended to "Comparative Example 4."

(3) First, ``Antioxidant, fragrance J'' described in page 6, line 18 of the specification has been amended to ``antioxidant, bactericide, fragrance.''

Claims (1)

[Claims] (1) A solid detergent composition containing the following four components A, B, C, and D. (A) Alkyl sulfosuccinate: 47-95% by weight (B) Higher alcohol: 2-20% by weight (C) Higher fatty acid: 2-20% by weight (D) Water: 1-13% by weight