JPS609555B2 - cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning composition containing an N-acylglutamate and an alkyl phosphate or a polyoxyethylene alkyl phosphate. Another object of the present invention is to provide a detergent composition that has a gentle effect on hair and has excellent foaming and detergent powers.

In recent years, demands for the safety of various cleaning agents have become stronger and stronger, and new highly safe surfactants are being developed and conventionally used surfactants that are highly safe are being reviewed. , the demand for products containing these ingredients is gradually increasing.

Among these, N-acylglutamate is a cleansing agent that is gentle on the skin and hair and has an excellent usability, and is used in solid detergents, shampoos, etc. The emulsifying power and cleaning power are somewhat insufficient for washing dishes with pomade adhesion and hair with pomade adhesion.

In addition, alkyl phosphate esters or polyoxyethylene alkyl phosphate esters are known as nonionic anionic surfactants that have skin affinity and relatively high safety, and have excellent emulsifying power, solubilizing power, and detergent power. Although it has excellent foaming properties, it lacks ultra-foaming power and has a somewhat difficult feel when used, so it is not used as a main ingredient in cleaning agents. The present inventors have discovered that by mixing N-acylglutamic acid and an alkyl phosphate ester or a polyoxyethylene alkyl phosphate ester, it has a mild effect on the skin and hair, has an excellent feeling of use, and can remove oil stains. The present inventors have discovered that a detergent composition having good detergency and foaming power can be obtained even in the presence of .

The cleaning composition of the present invention can take various forms, such as solid, kneaded, and liquid, depending on the raw materials used, but regardless of the form, it fully exhibits the above-mentioned characteristics.

The acyl group of the N-acylglutamate used here includes fatty acid residues having 8 to 22 carbon atoms, such as single fatty acid acyl groups such as 2-ethylhex/yl, lauroyl, palmitoyl, stearoyl, and oleoyl, as well as hardened beef tallow. Mixed fatty acid acyls such as fatty acyl and coconut oil fatty acyl are used, and mono- and di-equivalent salts of lithium, sodium, potassium, ammonium, alkylolamine, basic amino acids, etc. are selected as appropriate depending on the form of the cleaning agent. be done.

The phosphate ester, which is one of the components, has 8 to 30 carbon atoms.
Mono-, di-, and triphosphoric acid esters of higher alcohols or alkylphenols, and polyoxyethylene alkyl ethers with 1 to 20 moles of ethylene oxide added thereto. It is also used as salts with sodium, potassium, alkanolamines, basic amino acids, etc.

These phosphate esters have different solubility and surfactant ability, and therefore have different uses. However, when solid detergents are normally solid and require low dissolution, alkyl phosphate esters or ethylene oxide is 1
Polyoxyethylene alkyl phosphate esters with ~3 moles of ethylene oxide added are mainly used, and those with a large number of moles of ethylene oxide added are easy to use in liquid products such as shampoos and kitchen detergents. The blending ratio of N-acyl glutamate and alkyl phosphate ester, polyoxyethylene alkyl phosphate ester, or their salts is usually as follows:
It is used in a weight ratio of 9'1 to 1/9, especially 7:
Excellent synergistic effect is observed around 3-5:5.

The detergent compositions of the present invention may include other adjuvants, such as other N
- Acyl amide/acid, protein, N-acylp. Adjuvants such as teine, alkylolamines, imidazoliso amphoteric surfactants, inorganic or organic builders such as citrates, solubilizers, diluents, fragrances, dyes, etc. can be included. Hereinafter, this will be explained in detail using examples.

Example 1 Liquid detergent N-acylglutamate polyoxyethylene alkyl Total 25% by weight Luric acid ester surfactant Monosodium citrate
3 Urea 5 Ethanol 10 Water
57 In the detergent with the above composition, the types and proportions of N-acyl glutamate and polyoxyethylene alkyl phosphate were varied, and the detergency of each composition was measured. The results are shown in Table 1. Indicated.

The measurement conditions and measurement results are as follows. 1.Cleaning power measurement conditions: Beef tallow,
A glass plate contaminated with soybean oil was immersed in light at 30 p.m.
The degreasing power was measured and expressed in weight percent.

0 Detergent power measurement results As is clear from Table 1, a synergistic effect on detergent power was observed in a relatively wide range of mixing ratios between N-acyl glutamate and polyJ oxyethylene alkyl phosphate.

Table 1 Example 2 Solid detergent (*The composition of the acyl group is an 8:2 mixture of semi-hardened beef tallow fatty acid and coconut oil fatty acid) In the above composition, the ratio of monosodium N-acylglutamate to monosodium lauryl phosphate was set to 2. The detergents were varied as shown in the table, thoroughly kneaded using a small roll, and then extruded using a small bar soap prototype device with a nozzle kept at 40 to 60°C.The obtained bar-shaped detergent was then molded using a foot-type molding machine.

Table 2 shows the results of measuring the performance of the obtained solid detergent. Table 2 ×I Measured according to JIS K3362-1970.

Concentration 0.25*, measurement temperature 40℃*2 JIS K33
Measured according to 04-1956. x3 The weight increase when the solid detergent was suspended in water at 20° C. for 1 hour was expressed as a percentage. *4 Measured using JIS Z2246 Shore-A. As is clear from Table 2, in a system in which both surfactants are mixed, the foaming properties are better, the frictional solubility is 4.0% lower, and the dissolution property in water is lower than in the system in which both surfactants are solidified individually. It was observed that the mixing of the solid detergents did not have any adverse effects, and that the performance as a solid detergent was improved overall. Example 3 Facial cleansing cream N-myristoyl-L-monopotassium glutamate 2% by weight monosodium monolauryl phosphate 5 tripolyoxyethylene (6) lauryl ether phosphate 5 lauric acid jetanolamide 3 polyoxyethylene sorbitan monolau Rate 5.

Pyrene glycol 10 fragrance
0.2 water
51.8 The above blended composition provides mild skin care,
A facial cleansing cream with excellent foaming power was obtained.

Example 4 Syanfu.

-N-cocoyl-L-glutamic acid monotrietanolamine 12.5% by weight
Dipolyoxyethylene (10) Triethanolamine oleoyl ether phosphate 7.5 Chassis oil fatty acid jetanolamide 3 Enzymatic hydrolyzate of collagen 22-Sodium pyrrolidone-5-carphonate (50% aqueous solution) 1 Polyoxyethylene (20 ) Sorbitan monolaurate 0.5 fragrance
0.2 water
73.3 With the above blended composition, a shampoo was obtained that was gentle on the hair and skin, had excellent foaming power, and had an excellent feel after use.

Claims (1)

[Claims] 1. A cleaning composition characterized by containing 90 to 10% by weight of (a) N-acylglutamate and 10 to 90% by weight of (b) alkyl phosphate or polyoxyethylene alkyl phosphate. .