JPH11189784A - Detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject detergent composition that has smooth solubility of disinfectants with high temporal stability with no adverse effect on its foaming behavior, detergency and the like by formulating specific amounts of isopropylmethylphenol and/or salicylic acid and phenoxyethanol to a detergent composition mainly comprising higher fatty acid salts. SOLUTION: This detergent composition contains (A) 1-30 wt.% of higher fatty acid salt, (B) 0.01-3 wt.% of isopropylmethyl-phenol and/or salicylic acid for imparting the microbicidal effect and (C) 0.05-5 wt.% of phenoxyethanol that is a solvent for the component B and works as a preservative. In a preferred embodiment, the component A is, for example, potassium or triethanolamine salt of coconut oil fatty acids, lauric acid or the like. Preliminarily, the component B is dissolved in the component C and they are admixed to the composition system whereby the component B can be formulated more stably. In addition, other surfactants, viscosity modifiers, water-based components may be formulated thereto in ranges where their effects are not damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a detergent composition, and more particularly to a detergent composition having good solubility of a bactericide, excellent stability over time, and excellent usability.

[0002]

2. Description of the Related Art Conventionally, detergents are used in accordance with the purpose and use thereof.
For the purpose of selecting and combining various surfactants, or imparting a conditioning effect, a bactericidal effect, or an anti-inflammatory effect, those containing various additives have been used.

[0003]

However, especially in a detergent composition intended for a bactericidal effect, isopropylmethylphenol or salicylic acid as a bactericide is hardly soluble in water. And it is difficult to satisfy the stability of the product due to precipitation of germicide crystals with the passage of time.
Accordingly, a method has been attempted in which these disinfectants are once dissolved in a solvent such as lower alcohol and then added to the preparation. However, although the solubility of the disinfectant is improved, the viscosity of the detergent is improved by the addition of the solvent. In some cases, problems such as deterioration of the cleaning agent and impairing the usability, and impairment of the basic quality of the detergent, such as foaming and foam quality, may occur. Therefore, there has been a demand for the development of a detergent composition having good dissolution of a bactericide and excellent stability over time without impairing the quality of the detergent.

[0004]

In view of the above circumstances, the present inventors have conducted intensive studies and as a result, have found that a detergent composition comprising a specific amount of isopropylmethylphenol and / or salicylic acid and phenoxyethanol as a main component of a higher fatty acid salt. It was found that by adding to the detergent, a detergent having an appropriate disinfection effect can be obtained by blending the disinfectant stably without impairing the basic quality of the detergent such as foaming properties and detergency. The invention has been completed.

That is, the present invention provides the following components (A) to
(C); (A) 1 to 30% by weight of a higher fatty acid salt, (B) 0.01 to 3% by weight of isopropylmethylphenol and / or salicylic acid, and (C) 0.05 to 5% by weight of phenoxyethanol. Cleaning composition. The details will be described below.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The higher fatty acid salt as the component (A) used in the present invention is a general-purpose anionic surfactant which is used as a detergent by combining a higher fatty acid and a counter ion. The higher fatty acid is not particularly limited, but specifically, animal fats and oils such as beef tallow, coconut oil, palm oil,
Vegetable oils and fats such as palm kernel oil, olive oil, safflower oil, soybean oil, and cottonseed oil, or capric acid, lauric acid, myristic acid, palmitic acid, stearic acid,
Examples include saturated linear fatty acids such as behenic acid, saturated branched fatty acids such as 2-ethylhexanoic acid and isostearic acid, and unsaturated fatty acids such as oleic acid and linoleic acid. Examples of the counter ion include inorganic bases such as sodium and potassium, and organic bases such as triethanolamine. Neutralized with sodium hydroxide, potassium hydroxide, triethanolamine or the like to obtain a fatty acid salt. One or more of the higher fatty acid salts obtained in this manner can be appropriately selected and used. Particularly preferably, the higher fatty acids are coconut oil fatty acids, palm kernel oil fatty acids, lauric acid,
Myristic acid, palmitic acid, potassium in counterion,
Triethanolamine.

[0007] The higher fatty acid salt of the component (A) is not only added as a higher fatty acid potassium salt and a higher fatty acid triethanolamine salt in the formulation, but also a higher fatty acid and an alkali agent such as potassium hydroxide and triethanolamine. May be separately blended and reacted during the manufacturing process of the detergent composition.

In the present invention, the content of the component (A) is
It is 1 to 30% by weight of all the components (hereinafter, unless otherwise specified, it is simply referred to as “%”), more preferably 5%.
~ 20%. If it is less than 1%, sufficient foaming properties and detergency cannot be obtained, and if it is more than 30%, the viscosity becomes too high and good usability cannot be obtained.

The isopropylmethylphenol and salicylic acid of the component (B) used in the present invention are essential components for imparting a bactericidal effect. These are not particularly limited as long as they are generally used as disinfectants in cosmetics, and there is no problem even if they are produced by chemical synthesis or other production methods.

In the present invention, the content of the component (B) is
0.01 to 3%, and more preferably 0.05 to 1%.
%. If it is less than 0.01%, a sufficient bactericidal effect cannot be obtained, and if it exceeds 3%, skin irritation may occur.

The component (C) phenoxyethanol used in the present invention is an essential component as a solvent for the component (B), but also has an effect as a preservative. This is not particularly limited as long as it is generally used as a preservative in cosmetics, and there is no problem even if it is obtained by chemical synthesis or other production methods.

In the present invention, the content of the component (C) is from 0.05 to 5%, more preferably from 0.1 to 3%.
It is. If it is less than 0.05%, a sufficient solvent effect cannot be obtained, and if it exceeds 5%, skin irritation may occur.

[0013] In addition to the above essential components, the detergent composition of the present invention may contain a quantitative,
In a qualitative range, other surfactants such as higher fatty acid salts, fatty acid alkylolamides, polyalkylene glycol fatty acid esters, etc .; pearlescent agents such as alkylene glycol fatty acid esters; water-soluble polymers, water-soluble polysaccharides, etc. Feel improver; aqueous component such as polyhydric alcohol; oily component such as lanolin, hydrocarbon, oil and fat, silicone oil; ultraviolet absorber; chelating agent; pigment;
Other components usually used in detergents, such as a regulator, an antioxidant, a powder, and a fragrance, can be blended.

In the cleaning composition of the present invention, a specific amount of each of the above-mentioned essential fatty acid salt, higher fatty acid salt, isopropylmephenoltyl and / or salicylic acid, and phenoxyethanol is mixed by heating, and if necessary, a cooling treatment is carried out. By appropriately blending the above-mentioned optional components, it can be produced as a skin cleanser or a hair cleanser for body, hand, face wash, and hair wash. In addition, it is preferable to dissolve isopropylmethylphenol and / or salicylic acid in phenoxyethanol in advance and then add and mix the bactericide to the system, which is more preferable. Further, the cleaning composition of the present invention can be carried out in various forms, such as a low-viscosity liquid, an emulsion, a cream, and a gel, depending on the combination with other components and the mechanism of the container. it can.

[0015]

The present invention will be described in more detail with reference to the following examples. These do not limit the present invention at all.

Examples 1 to 6 and Comparative Examples 1 to 4 Hand Soaps Hand soaps having the compositions shown in Table 1 were prepared, and their use sensation (foaming, foamy creamy feeling, refreshing feeling after rinsing) and stability over time were measured. evaluated.

[0017]

[Table 1]

(Production method) A: Components 1-3, 7 and 8 are uniformly heated and dissolved. B: Components 9 to 10 and 13 are added to A, mixed, and cooled. C: Components 4 to 6 are uniformly dissolved, and then added to B and mixed. D: Components 11 to 12 were added to and mixed with C to obtain a hand soap.

(Evaluation method) Feeling of use 10 samples were used by 10 professional evaluation panels.
Foaming, foamy creamy feeling, and refreshing feeling after washing were evaluated on a 5-point scale. Furthermore, determine the average score,
It was determined according to the following criteria. [Evaluation] 4 points: Very good. 3 points: good. 2 points: Normal. 1 point: Somewhat poor. 0 point: defective. [Judgment] ：: Average score of 3 or more ○: Average score of 2 or more but less than 3 Δ: Average score of 1 or more and less than 2 ×: Average of less than 1

2. Stability over time Each sample was placed in a constant temperature bath at room temperature, 5 ° C and 40 ° C,
After 30 days, the cells were visually observed and the stability was evaluated according to the following evaluation criteria. [Criterion] ：: No change. ：: almost no change. Δ: Some signs of separation or crystal precipitation are observed. X: Separation or crystal precipitation is clearly observed. The results obtained by the above evaluation method are also shown in Table 1.

As is clear from the results shown in Table 1, Examples 1 to 6 according to the present invention have good foaming, a creamy feeling of foam quality, a refreshing feeling after washing, and a good aging. Also had excellent stability without precipitation or separation of isopropylmethylphenol. On the other hand, in the comparative examples, none could satisfy all the evaluation items.

Example 7 Body soap (component) (%) 1. Palm kernel oil fatty acid potassium 15.0 Coconut oil fatty acid diethanolamide 5.0 3. Salicylic acid 0.14. Phenoxyethanol 0.55. Appropriate amount of fragrance 6. Purified water balance

(Preparation method) A: Components 1 to 2 and 6 are uniformly mixed by heating and cooled. B: After dissolving component 3 in component 4, add to A and mix uniformly. C: Component 5 was added to and mixed with B to obtain a body soap. Example 7 was a body soap having good foaming and feel and excellent stability over time.

[0024]

As described above in detail, the detergent composition of the present invention stably incorporates isopropylmethylphenol and / or salicylic acid having a bactericidal effect, and has a foaming property which is the basic quality of the detergent. It does not impair the detergency and the like, has a good feeling in use, and has an excellent quality of having an appropriate bactericidal effect.

Claims (2)

[Claims] 1. The following components (A) to (C): (A) 1 to 30% by weight of a higher fatty acid salt (B) 0.01 to 3% by weight of isopropylmethylphenol and / or salicylic acid (C) Phenoxyethanol A cleaning composition comprising from 0.5 to 5% by weight. 2. Component (A) is one or more potassium salts and / or triethanolamine salts selected from coconut oil fatty acids, palm kernel oil fatty acids, lauric acid, myristic acid, and palmitic acid. The cleaning composition according to claim 1, characterized in that: