JP2005179303A - Detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a detergent composition having excellent conditioning effect and sufficient frothing power and giving little stimulation to the skin. <P>SOLUTION: This detergent composition contains a copolymer of 2-[(meth)acryloyloxy]ethyl-2-(trimethylammonio)ethyl phosphate and 2-hydroxy 3-methacryloyloxypropyl methyl ammonium chloride, and an amino acid-based surfactant. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cleaning composition that has an excellent conditioning effect, has sufficient foaming power, and has little skin irritation.

  Detergents are required to have detergency and good foaming. At the same time, in recent years, consumers' awareness of care has increased, and in addition to basic performance as a cleaning agent, there is a tendency to require a feeling of use during cleaning, a feeling of finish after cleaning, and a conditioning effect. In addition, as the frequency of use of the cleaning agent increases, there is a demand for a product that has little irritation to the skin and does not cause the washing to stick out.

  Conventionally, a cationized polymer, a high molecular silicone, or the like is blended as a cleaning agent conditioning agent. However, it is not yet satisfactory in terms of the feeling of use and finish during washing. In addition, amino acid-based detergents such as acyl sarcosine salts, acylmethyl-β-alanine salts, and acyl glutamate salts are used as mild detergents, but these detergents have low foaming power and are squeaky. Since it has a feeling, a preferable feeling of use could not be obtained. (See Patent Documents 1 to 3)

  On the other hand, 2-methacryloyloxyethyl phosphorylcholine monomer and a polymer obtained by polymerizing the monomer are already known. Since this polymer is modeled on a biological membrane, it is disclosed that it is excellent in biocompatibility and can provide a cosmetic with excellent moisture absorption and skin roughening effect (Patent Documents 4 to 5). However, since these polymers are water-soluble, when blended with a cleaning agent, most of the polymers are washed away, and a sufficient effect cannot be exhibited.

Japanese Patent No. 3064037 JP-A 63-45213 JP 2000-319140 A JP-A-3-39309 JP 2000-26249 A

  Under such circumstances, there has been a demand for a technique for solving the above-mentioned drawbacks. That is, an object of the present invention is to provide a cleaning composition that is excellent in conditioning effect, has sufficient foaming power, and has little skin irritation.

As a result of intensive studies in view of the above circumstances, the present inventor has found that a detergent composition containing a specific polymer and an amino acid surfactant can solve the above problems, and has completed the present invention. That is, the present invention relates to a copolymer of 2-[(meth) acryloyloxy] ethyl-2- (trimethylammonio) ethyl phosphate and 2-hydroxy3-methacryloyloxypropylmethylammonium chloride 0.00005 to 0.05% by mass. And an amino acid-based surfactant.

  INDUSTRIAL APPLICATION This invention can provide the cleaning composition which is excellent in a conditioning effect, has sufficient foaming power, and has little skin irritation.

  The copolymer of 2-[(meth) acryloyloxy] ethyl-2- (trimethylammonio) ethyl phosphate and 2-hydroxy-3-methacryloyloxypropylmethylammonium chloride used in the present invention is lipid C (5% of the polymer). The product is marketed by Nippon Oil & Fat Co., Ltd. The amount of the polymer blended is preferably 0.00005 to 0.05 mass%, more preferably 0.0005 to 0.025 mass%, based on the entire cleaning composition. When the amount is less than 0.00005% by mass, a sufficient conditioning effect is not exhibited. When the amount exceeds 0.05% by mass, the hair after washing has become stiff and sufficient foaming power cannot be obtained.

  The amino acid surfactant used in the present invention is not particularly limited, but coconut oil fatty acid methyl-β-alanine sodium, lauroylmethyl-β-alanine sodium, coconut oil fatty acid methyl-β-alanine triethanol N-acyl-β-alanine salts such as amine, lauroylmethyl-β-alanine triethanolamine, N-acyl such as coconut oil fatty acid sarcosine sodium, lauryl sarcosine sodium, coconut oil fatty acid sarcosine triethanolamine, lauryl sarcosine triethanolamine Sarcosine salt, monosodium N-cocoyl-L-glutamate, monosodium N-lauroyl-L-glutamate, sodium N-myristoyl-L-glutamate, N-cocoyl-L-glutamate triethanolamine, N-ra Examples include N-acyl glutamates such as uroyl-L-glutamic acid triethanolamine and N-myristoyl-L-glutamic acid triethanolamine, N-acylmethyl taurine salts, N-acyl glycine salts, and the like. These amino acid surfactants can be appropriately selected and used alone or in combination of two or more. Among these, N-acyl-β-alanine salts are preferable, and among them, lauroylmethyl-β-alanine sodium is particularly preferable in terms of foaming power and feeling of use. Although the compounding quantity of these amino acid type surfactants is not specifically limited, 1-20 mass% is preferable with respect to the whole cleaning composition, More preferably, it is 5-15 mass%.

  In addition to the components described above, the components usually used in the cleaning composition can be appropriately blended with the cleaning composition of the present invention within the range achieved by the present invention. Examples of these components include anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants, moisturizers, cationic polymers, silicone derivatives, oils, plant extracts, viscosity adjustments Agents, pearlizing agents, drugs, preservatives, chelating agents, antioxidants, pH adjusters, dyes, fragrances and the like.

  The cleaning composition of the present invention can be used for hair shampoos, body shampoos, hand soaps, facial cleansers, etc., regardless of the subject or dosage form.

The present invention will be described in detail based on examples, but the present invention is not limited thereto. Prior to the examples, test methods and evaluation methods employed in each example will be described. In this example, as a copolymer of 2-[(meth) acryloyloxy] ethyl-2- (trimethylammonio) ethyl phosphate and 2-hydroxy3-methacryloyloxypropylmethylammonium chloride, 5% of the polymer Lipidure C [manufactured by NOF Corporation], which is an aqueous solution, was used.

-Usability test method during shampooing A panel of 10 people shampoos with a sample, and the sensation of use, such as the presence or absence of hair squeaking, is judged in three stages: "good", "normal", and "bad" The judgment result was judged by the number of people who answered “good”.

Judgment criteria are as follows.
◎: Very good The number of test subjects who answered “good” is 8 or more ○: Excellent The number of test subjects who answered “good” is 6 or more, less than 8 Δ: Inferior The number of test subjects who answered “good” is 4 or more and less than 6 ×: very poor The number of test subjects who answered “good” is less than 4

・ Test method for finishing feeling of hair after hair washing and drying 10 panels wash hair with samples, and “good”, “ordinary”, “bad” finishes of hair moistness, flexibility, suppleness after hair washing and drying The determination was made based on the number of people who answered “good”.

Judgment criteria are as follows.
◎: Very good The number of test subjects who answered “good” is 8 or more ○: Excellent The number of test subjects who answered “good” is 6 or more, less than 8 Δ: Inferior The number of test subjects who answered “good” is 4 or more and less than 6 ×: very poor The number of test subjects who answered “good” is less than 4

-Foaming property test method An aqueous solution having an activator concentration of 2% (using CaCO ₃ 50 ppm artificial hard water, 40 ° C) was prepared and carried out according to the Ross Miles test method.

Judgment criteria are as follows.
◎: Excellent foaming Foam height 250 mm or more ○: Foaming good Foam height 210 mm or more and less than 250 mm △: Foaming normal Foam height 170 mm or more and less than 210 mm ×: Poor foaming Foam height less than 170 mm

・ Skin irritation test method (safety test)
(1) Skin irritation (protein denaturation rate) test method Using an aqueous high-performance liquid chromatography, the ovalbumin denaturation rate when the sample was added to an ovalbumin pH 7 buffer solution at a sample concentration of 1% was 220 nm. Then, the denaturation rate was calculated using the following equation.
[formula]
Denaturation rate (%) = (Ho−Hs) / Ho × 100
Ho: Height of 220 nm absorption peak of ovalbumin buffer solution Hs: Height of 220 nm absorption peak when sample is added to ovalbumin buffer solution

The evaluation criteria were set as follows.
◎ ... ovalbumin denaturation rate less than 30% o ... ovalbumin denaturation rate 30% or more and less than 60% Δ ... ovalbumin denaturation rate 60% or more but less than 80% x ... ovalbumin denaturation rate 80% or more

Examples 1-7 and Comparative Examples 1-4 (hair shampoo)
A hair shampoo having the composition shown in Table 1 was prepared, and its feeling of use, foaming properties and skin irritation were examined. The results are shown in Table 1.

As is clear from Table 1, the cleaning composition according to the present invention exhibited superior performance as compared with the composition of the comparative example.

Example 8 (hair shampoo) (mass%)
Polyoxyethylene (2) sodium lauryl ether sulfate 40.0
・ Lauroylmethyl-β-alanine sodium 5.0
Palm oil fatty acid monoethanolamide 1.0
Palm oil fatty acid amidopropyl betaine 10.0
Cationized cellulose derivative (trade name: Katchinal HC-200 [manufactured by Toho Chemical Industry Co., Ltd.]) 0.3
・ O- [2-hydroxy-3- (trimethylammonio) chloride
Propyl] guar gum 0.1
-POE (10) POP (2) Palm oil fatty acid glyceryl 2.0
・ Polymer silicone aqueous emulsion 1.5
(Product name: Silicon KM-906 [Shin-Etsu Chemical Co., Ltd.])
・ Ethylene glycol distearate 2.0
・ Lipidure C 0.05
・ Hydrolyzed wheat 0.1
(Product name: GLUADIN W20 [manufactured by Cognis Japan])
・ Sodium glutamate 0.5
・ Citric acid 0.1
・ Sodium benzoate 0.3
・ EDTA 0.1
・ Perfume 0.5
・ Purified water residue

  A hair shampoo having the above composition was prepared by a conventional method, and the feeling of use during shampooing, finishing feeling after washing and drying, foaming, and skin irritation were evaluated. .

Example 9 (body shampoo) (mass%)
・ Potassium laurate 10.0
・ Potassium myristate 4.0
-Potassium palmitate 6.0
・ Lauroylmethyl-β-alanine sodium 5.0
-Lauryl sulfate triethanolamine 4.0
2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine 2.0
Palm oil fatty acid amidopropyl betaine 2.0
・ Ethylene glycol distearate 2.0
・ Hydroxypropyl methylcellulose 0.3
・ Concentrated glycerin 1.0
・ Propylene glycol 5.0
Palm oil fatty acid monoethanolamide 1.0
・ Lipidure C 0.5
・ Peach leaf extract 1.0
・ EDTA 0.1
・ Perfume 0.5
・ Purified water residue

When a body shampoo having the above composition was prepared by a conventional method and the feeling of use, foaming property and skin irritation were evaluated, all the properties were excellent and good results were obtained.

Example 10 (hand soap) (mass%)
・ Triethanolamine laurate 10.0
・ Triethanolamine myristic acid 2.0
Lauroylmethyl-β-alanine triethanolamine 1.0
・ Lamidate amidopropyl betaine 5.0
・ Lauric acid monoisopropanolamide 2.0
・ Ethylene glycol distearate 2.0
・ Triclosan 0.1
・ Methyl paraoxybenzoate 0.1
・ EDTA 0.1
・ Lipidure C 0.2
・ Aloe extract 0.5
・ Fragrance 0.3
・ Purified water residue

  When a hand soap having the above composition was prepared by a conventional method and evaluated for use feeling, foaming property and skin irritation, all the properties were excellent and good results were obtained.

In addition, the fragrance | flavor used in the said Example is a thing of the following fragrance | flavor prescriptions.

  ADVANTAGE OF THE INVENTION By this invention, it can provide the cleaning composition which is excellent in a conditioning effect, has sufficient foaming power, and has little skin irritation.

Claims (2)

Copolymer of 2-[(meth) acryloyloxy] ethyl-2- (trimethylammonio) ethyl phosphate and 2-hydroxy-3-methacryloyloxypropylmethylammonium chloride, 0.00005 to 0.05% by mass, and amino acid surfactant A cleaning composition comprising: The detergent composition according to claim 1, wherein the amino acid surfactant is an N-acyl-β-alanine salt.