JPS608039B2 - solid detergent - Google Patents

Description

[Detailed description of the invention] The present invention relates to solid detergents.

More specifically, the present invention relates to a solid detergent based on an N-long chain acyl acidic amino acid salt, which has the same smooth feel as a fatty acid soap and has improved adhesion and dissolution properties. Solid detergents based on N-long chain acyl acidic amino acid salts have excellent moldability and good detergency even in hard water, and the pH of the aqueous solution when used is weakly acidic, which is the same as that of the skin, so it is not harmful to the skin. It has excellent features not found in conventional solid detergents, such as being less irritating and leaving the skin feeling moisturized after use.

For this reason, solid detergents based on N-length mirror acyl acidic amino acid salts have recently come into widespread use, but these solid detergents have the following drawbacks, and improvements are strongly desired. was. In other words, (1) Solid detergents based on N-most chain acyl acidic amino acid salts lack foam and surface smoothness when used compared to fatty acid soaps.
1 When it comes into contact with water, it melts and disintegrates, damaging the shape of the solid detergent (hereinafter referred to as moltenness) (3) If left in a soap box after use,
There are three points: it firmly adheres to the soap box (hereinafter referred to as adhesion).

Conventionally, as a method for improving the foam and surface smoothness of solid detergents based on N-long chain acyl acidic amino acid salts, lanolin and its derivatives, lecithin and its derivatives,
It is known to add superfatting agents such as paraffins, vaseline, higher alcohols, fatty acid esters, etc., but adding these superfatting agents cannot sufficiently improve disintegration and adhesion properties. Furthermore, depending on the type and amount of additives used, foaming may be reduced.

In addition, as a method for improving dissolution and adhesion, a method of adding colloidal magnesium aluminum silicate (Japanese Unexamined Patent Publication No. 49-5404) and an alkaline earth metal salt of N-long chain acyl acidic amino acid, etc. Although methods such as JP-A-50-160304 have been disclosed, the effects of improving dissolution and adhesion are insufficient, and these methods cannot compensate for bubbles and surface smoothness.
Furthermore, in Tokukan Sho 49-44007, titer
It is disclosed that foam modification and adhesion can be improved by adding a nonionic viscosity increaser to a base of monosodium N-acylglutamate derived from a long-chain fatty acid with 40 to 50 q○. However, the effect is insufficient and it has not been put into practical use. The present inventors conducted intensive research to simultaneously improve the foam, surface smoothness, melting properties, and adhesion of solid detergents based on N-long chain acyl acidic amino acid salts, and found that certain cations The present inventors have discovered that the addition of a surfactant is effective and does not impair the excellent performance of the base material, leading to the completion of the present invention.

That is, the object of the present invention is to provide a soap similar to a fatty acid soap, which is characterized in that it contains as essential components a base consisting of at least one type of N-long chain acyl acidic amino acid salt and a quaternary ammonium salt type cationic surfactant. To provide a solid detergent with improved dissolution and adhesion properties and a smooth feel.

The N-most chain acyl acidic amino acid salt used as the base of the present invention has at least one type selected from saturated or unsaturated fatty acid residues having 8 or 22 carbon atoms in the last chain acyl group, and the acidic amino acid is It is at least one selected from aspartic acid and glutamic acid, and the salt is selected from alkali metal salts such as sodium and potassium salts, ammonium salts, water-soluble amine salts, and basic amino acid salts such as lysine and arginine. The acidic amino acid used as a raw material for the base may be either an optically active form or a racemic form. The quaternary ammonium salt type cationic surfactant used as the modifier of the present invention has the general formula [where R,
is an alkyl or alkenyl group having 8 carbon atoms or 22, or an alkylphenoxyshethoxyethyl group; R2 is an alkyl group having 1 carbon atoms or less; 4 alkyl group, hydroxyalkyl group, or penzyl group; R3 and R4 are R, or R
2 and in this relationship R, and R3, R4 and R2 and R
3, R4 may be the same or different, and X represents a halogen atom].

Typical examples of this compound include lauryltrimethylammonium halide, myristyltrimethylammonium halide, /glumityltrimethylammonium halide, stearyltrimethylammonium halide, dilauryldimethylammonium halide, and dimyristyldimethylammonium halide. , di/glumityl dimethyl ammonium halide, distearyl dimethyl ammonium halide,
Trilaurylmethylammonium halide, trimyristylmethylammonium halide, tripalmitylmethylammonium halide, tristearylmethylammonium halide, etc. and when these methyl groups are short mirror alkyl groups such as ethyl group or short hydroxyl groups such as hydroxyethyl group. There are compounds in which the chain alkyl groups are changed and these groups and/or long chain alkyl groups are different within the same molecule.

Furthermore, examples of ammonium salts containing aromatic groups include lauryldimethylbenzylammonium halide, myristyldimethylbenzylammonium halide, glumityldimethylbenzyl halide, and stearyldimethylbenzylammonium halide, and those in which the methyl group is changed to an ethyl group. diisobutylphenoxethoxyethyldimethylbenzylammonium halide, diisobutylcrezoxyethoxymethyldimethylbenzylammonium halide, etc. As the halide of these quaternary ammonium salts, chloride and bromide are preferred. The amount of the quaternary ammonium salt type cationic surfactant added in the present invention varies depending on the type thereof, but is appropriately selected within the range of 1% to 2% by weight per solid detergent. The solid detergent of the present invention may contain foaming enhancers, binders, fragrances, pigments, dyes, and other adjuvants commonly used in solid detergents (Yin Kosho 37-1
0167) can be added as appropriate.

To produce the solid detergent of the present invention, a thin equivalent amount of water is added to a mixture of a base, a modifier, and an auxiliary agent if necessary, and the mixture is kneaded with a roll and/or pelletizer to form a mold. It is sufficient to adopt the machine kneading method used in the soap industry.

The solid detergent of the present invention produced in this manner has the following excellent performance. '1} Gives a smooth, fine, creamy foam similar to cosmetic fatty acid soaps.

■ Even if you leave it in the soap box after use, it will not stick to the soap box. It has a smooth surface like that of fatty acid soap for t3'ihi seaside. '4' Will not melt or crumble even if placed in a humid place.

'5} The friction solubility is comparable to that of cosmetic fatty acid soap, and has a value that complies with JIS Kn3301. '
6' Has excellent super foaming power and cleaning power even in hard water.

[71] Non-irritating, does not irritate the skin, and leaves the skin with a moist feel after use.

■ Since the N-long chain acyl acidic amino acid salt has bacteriostatic properties, it can be used for cleaning and disinfection at the same time.

The present invention will be explained in more detail with reference to Examples.

In addition, all compounding ratios in Examples and Comparative Examples are shown in parts by weight.

Examples 1 to 6, Comparative Examples 1 to 2 The formulations shown in Table 1 were sufficiently thickened using a small roll, and then extruded using a small soap extruder with a nozzle kept at 45q0. A solid detergent with a weight of approximately 20 mm was prepared by molding it using a molding machine, and was 5 mm x 35 mm x 1 mm, and was subjected to usage tests, dissolution tests, adhesion tests, and friction solubility tests. .

The results are shown in Table 1. Table 1 *Product name: Amisoft GS-11 (manufactured by Ajinomoto ■, same hereinafter) Each test method was performed as follows.

'11 Foam and surface feel test 10 people (5 men,
Comparative Example 1 (5 women) conducted a hand washing test with about 40 oo of warm water, and the foaming, bubbles, and surface smoothness of the solid detergent were compared to Comparative Example 1.
A score of 0 was given if the sample was the same as that of the above sample, 10.1 was given if it was better, and -1 was given if it was inferior to the sample.

UIO～-6・・・・・・・・・×River 5～0……△ 1～5……○ 6～10・・・・・・・・・◎ ■ Melting I property test vertical 62 Put 5 cups of water into a plastic soap box made of willow x 45 strips x 2 strips, and add 1 cup of water (5 strips x 35 ribs) in it.
After soaking the molded solid detergent into the mold for 0 feet and weighing about 20 minutes, and leaving it for 2 minutes, the way the solid detergent crumbled was observed.

The evaluation method was as follows: ◯ indicates that the original shape is almost retained, △ indicates that the shape is slightly collapsed, and × indicates that the shape is completely collapsed.

The measurement was performed three times for each sample, and the evaluation was based on the average of the measurements. [31 Adhesive Strength Test Wet the surface of the solid detergent with water, place a polyethylene adhesive terminal with a diameter of 2.5 cm on top of it and leave it for 2 minutes.

A hook with a spring balance with a maximum weight of 4k9 was hung on the wire of the adhesive terminal, the spring balance was pulled, and when the adhesive terminal was separated from the solid detergent, the scale on the spring balance was read, and that value was taken as the adhesive strength. The measurement was repeated five times for each sample, and the average value was determined. '41 friction solubility test Measured according to JISK-3304 (1956).

Examples 7-12, Comparative Examples 3-4 The formulations shown in Table 2 were molded according to Examples 1-6 and tested in the same manner.

The results are shown in Table 2. The formulations of each Example below in Table 2 were also molded in the same manner as Examples 1-6.

Example 13 N-lauroyl DL-monosodium glutamate
71 parts lauryldimethylbenzylammonium chloride 7 myristyl alcohol titanium oxide 0.1 water
12 Example 14 Disodium N-semi-hardened beef fatty acyl-L-glutamate 7 parts lauryl myristyl dimethyl benzyl ammonium chloride
2 cetyl alcohol
8 Flavor Appropriate amount of water 11 Example 15 Monosodium N-valmityl-L-glutamate
4. Monopotassium N-stearoyl-L-glutamate
25 myristyldimethylbenzylammonium chloride
15 Lauric acid jetanolamide 5 Pigment
Appropriate amount of water 15 Example 16 N-cocoyl-Lm monosodium aspartate
6$ Domestic N-stearoyl HL-glutamic acid monotrietanolamine 10 distearyldimethylammonium chloride 13 lauryl alcohol
30 water
5. oExample 17N-lauroyl-L-monosodium glutamate
6 Ankarigun N-lauroyl-L-glutamic acid mono-L-ornithine salt
15 Lauroyltrimethylammonium chloride 20 Water 5 Example 18 N-Mixed fatty acid acyl-DL-glutamate monosodium Yidu distearyldimethylammonium chloride 16 Diisobutylcresoxyethoxyethyldimethylbenzyl ammonium chloride* 3 Cetyl alcohol
5 Stearic acid monoethanolamide
3Water 9*Product name: Hyamine 10x (manufactured by Rohm and Haas, USA) Performance tests were conducted on each of the solid detergents of Examples 13 to 18.

The results are shown in Table 3. As is clear from the results in Table 3 and above, the solid detergent of the present invention:
Compared to those with no addition of quaternary ammonium salt and those with a large amount of added quaternary ammonium salt, foam and surface smoothness, dissolution I property,
It can be seen that the adhesion and adhesion properties were improved at the same time.

Claims (1)

[Scope of Claims] 1. A base comprising at least one type of N-long chain acyl acidic amino acid salt and a quaternary ammonium salt type cationic surfactant in an amount of 1 to 20% by weight per solid detergent as essential components. A solid detergent characterized by: 2. The solid detergent according to claim 1, wherein the acyl group of the 2N-long chain acyl acidic amino acid salt is a saturated or unsaturated fatty acid residue having 8 to 22 carbon atoms. 3 The acidic amino acid of the N-long chain acyl acidic amino acid salt is
The solid detergent according to claim 1, which is selected from aspartic acid and glutamic acid. 4. The solid detergent according to claim 1, wherein the salt of the N-long chain acyl acidic amino acid salt is selected from alkali metal salts, ammonium salts, water-soluble amine salts, and basic amino acid salts. 5 The quaternary ammonium salt type cationic surfactant has the general formula ▲ Numerical formula, chemical formula, table, etc. is an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group, or a benzyl group, and R_3 and R_4 are R
_1 or R_2 in this relationship R_1 and R_3,
R_4 and R_2 and R_3 and R_4 may be the same or different, and X represents a halogen atom. ] The solid detergent according to claim 11, which is a quaternary ammonium salt type cationic surfactant. 6
R_1 in the above general formula is the general formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [In the formula, R_5 is a hydrogen atom or a methyl group. The solid detergent according to claim 1, wherein R_2 and R_3 are each a methyl group and R_4 is a benzyl group.