JP3417632B2 - Liquid detergent composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition which has excellent stability against coloring over time and has excellent fragrance durability.

[0002]

2. Description of the Related Art Conventionally, anionic surfactants such as alkyl sulfates and polyoxyethylene alkyl ether sulfates have been used as surfactants for liquid detergent compositions having a high foaming property. Surfactants of this type are compared with other surfactants such as α-olefin sulfonate salts, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaines, nonyl phenyl ethers and their sulfates. It is used as a highly versatile base because of its good foaming, good washing properties, and low cost.

On the other hand, the liquid detergent composition is provided with a scent for the purpose of masking the base odor and enjoying the scent, in addition to the functionality such as foamability and detergency. Recently, there has been a demand for a liquid detergent composition having a better residual aroma, and for that reason, specific compounds such as eugenol, an ionone derivative, and a methylcyclopentenone derivative have been often used as a perfume ingredient.

[0004]

However, coloring may occur with time in the liquid detergent composition containing the above-mentioned surfactant, which gives a very beautiful appearance when placed in a store or at home. This is a problem because it is damaging and upset when used.

In order to prevent such a problem of coloration with time in a liquid detergent composition, it has been attempted to add an ultraviolet absorber or a carboxylic acid derivative (Japanese Patent Publication No. Sho 6).
No. 3-2525, Japanese Examined Patent Publication No. 2-62600). However, the effect of preventing coloring by these is not always sufficient.

[0006]

Under such circumstances, the inventors of the present invention have conducted extensive studies and as a result, as a result, coloring over time was caused by using a specific surfactant and a specific fragrance in a liquid detergent composition in combination. The present invention has been completed and the present invention has been completed, by further discovering that coloring with time can be prevented by adding an antioxidant having a reducing power to such a liquid detergent composition.

That is, the liquid detergent composition of the present invention is
The following components (A) and (B) (A) Alkyl sulfate represented by general formula (1) R ₁ OSO ₃ X (1) (wherein R ₁ is a straight chain having an average carbon number of 8 to 18 or Branched saturated hydrocarbon group, X is NH ₄ , NH (CH ₂ CH ₂ O
H) ₃ or Na. ) Or a polyoxyethylene alkyl ether sulfate represented by the general formula (2) R ₁ (CH ₂ CH ₂ O) nOSO ₃ X (2) (wherein R ₁ is a straight chain having an average carbon number of 8 to 18 or Branched saturated hydrocarbon group, X is NH ₄ , NH (CH ₂ CH ₂ O
H) ₃ or Na, and n is 2 or 3. )
One or more anionic surfactants selected from (B) an ionone derivative represented by the general formula (3) and / or an isomer thereof,

[Chemical 3] (In the formula, R ₁ and R ₂ represent hydrogen or a methyl group, and R ₃ represents a methyl group or an ethyl group.) A methylcyclopentenone derivative represented by the general formula (4),

[Chemical 4] (Wherein R ₁ represents a saturated or unsaturated hydrocarbon group) and a liquid detergent composition containing a perfume containing one or more compounds selected from eugenol and having a reducing power. Add antioxidants and fragrance
The present invention provides a liquid detergent composition having excellent durability .

The alkyl sulfate represented by the general formula (1) and the polyoxyethylene alkyl ether sulfate represented by the general formula (2), which are the component (A) used in the present invention, have been used in conventional liquid detergent compositions. The anionic surfactant has been used in the above, and a natural alcohol is used as the alcohol, and the one obtained by sulfating by a conventional method and neutralizing with ammonia, triethanolamine, or sodium is used. Examples of the alkyl sulfates include commercially available Teikalite A1225 and Teikalite T1135 (both produced by Teika), and polyoxyethylene alkyl ether sulfates such as Teikalite AE1.
225 (manufactured by Teika), Shinorin SP-300 (manufactured by Shin Nippon Rika Co., Ltd.) and the like. The above (A) in the present invention
The blending amount of the components is 3 to 30% by weight, particularly 5 to 20% by weight.
Is preferred.

The ionone derivative represented by the general formula (3) and its isomer contained in the component (B) used in the present invention are α-ionone, β-ionone, methylionone and α-isomethylionone. , Allylionone and the like. Examples of the methylcyclopentenone derivative represented by the general formula (4) include cis-jasmone and dihydrojasmone. The α-ionone derivative, the methylcyclopentenone derivative, and eugenol are components that have been conventionally blended in a fragrance composition, and provide excellent fragrance persistence, but as will be shown later,
It has been found that when used in combination with the component (A), coloration occurs over time.

The amount of the ionone derivative, the methylcyclopentenone derivative and eugenol to be blended in the present invention is 5 to 50 relative to 1000 parts by weight of the component (B).
The amount of 0 parts by weight is suitable when the quality and strength of the scent and the residual aroma are taken into consideration. Further, the blending amount of the component (B) in the liquid detergent composition of the present invention is preferably 0.05 to 5.0% by weight.

On the other hand, as the antioxidant having reducing power used in the present invention, there are sulfite and hydrogen sulfite, and examples of the salt include salts such as sodium, potassium and ammonium. The content in the liquid detergent composition of the present invention is 0.01 to 0.5% by weight, preferably 0.05 to 0.2% by weight. If it is less than 0.01% by weight, the effect of the present invention cannot be sufficiently obtained, and if it exceeds 0.5% by weight, the effect is obtained but remains constant, and conversely, the quality of the product is impaired.

In the liquid detergent composition of the present invention, in addition to the above-mentioned essential components, if necessary, components usually used in cosmetics can be appropriately blended within a range that does not impair the effects of the present invention. For example, amphoteric surfactants, nonionic surfactants, cationic surfactants, oils such as silicone oils and ester oils, water-soluble polymers, viscosity modifiers, pH modifiers, humectants, preservatives, pearlizing agents, sterilization. Agents, chelating agents, ultraviolet absorbers, cosmetic ingredients and the like. Examples of the liquid detergent composition of the present invention include various detergents such as shampoo and body detergent.

[0013]

EXAMPLES The effects of the present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

Test Example 1 0.3% of each fragrance component shown in Table 1 was added to ammonium alkylsulfate (Takelite, 25% aqueous solution), and the presence or absence of coloration was evaluated. The results are shown in Table 1.

[Table 1] (Coloring degree test method) Each of the prepared samples was filled in a transparent glass container, stored for 2 weeks under irradiation of a fluorescent lamp, and the coloring degree was evaluated with the naked eye. Evaluation criteria ○: Not colored ×: Colored

As shown in Table 1, when eugenol, α-ionone, α-methylionone, β-ionone, allylionone and cis-jasmon, which correspond to the component (B) of the present invention, were added in the presence of ammonium alkylsulfate. In, it was found that coloring occurred with time.
On the other hand, when methyl eugenol, linalool and phenylethyl alcohol were added, such coloring was not observed. (A) other than alkyl ammonium sulfate
Similar results were obtained when the other anionic surfactant as the component and the other compound as the component (B) were used.

Test Example 2 Various shampoo compositions shown in Table 2 below were prepared and their coloring degree was examined. The results are shown in Table 2.

[0017]

[Table 2]

(Manufacturing method) Components other than the fragrance are heated to 70 ° C., dissolved and mixed. After mixing well, cool to 40 ° C. and add perfume.

As is clear from Table 2, the shampoo composition of the present invention containing sodium sulfite or sodium hydrogen sulfite has excellent stability against coloration.

Test Example 3 Shampoo compositions shown in Table 3 were prepared and their coloring degree was examined. The results are shown in Table 3.

As is clear from Table 3, the shampoo composition of the present invention shows excellent stability against coloration.

[0022]

[Table 3]

Example 7 A shampoo having the following composition was prepared, and the coloring degree and the residual aroma were evaluated in the same manner as in Examples 1-6 . (Formulation) (% by weight) Polyoxyethylene lauryl ether Sodium sulfate (3EO) ^{* 8} 20 Lauric acid diethanolamide 5 Cationized cellulose (2% aqueous solution) 15 pH adjusting agent 0.5 Preservative 0.5 Fragrance Material A ^{* 3} 0.5 Sodium sulfite 0.05 Dyes Appropriate amount Purified water Residual amount * 8: Cinoline SP-300 (29% aqueous solution) The above shampoo composition has excellent residual aroma and is not colored with time. It was not there.

[0024] The body shampoo consisting of blending composition shown in Example 8 below was prepared and evaluated for coloration degree and substantivity in the same manner as in Example 1-7 methods. (Formulation) (% by weight) Alkyl sulfate triethanolamine ^{* 9} 20 Laurinate myristic acid Triethanolamine solution 20 Methylcellulose (2% aqueous solution) 10 pH adjuster 0.5 Preservative 0.5 Perfume A ^{* 3} 0. 6 Sodium bisulfite 0.05 Chromium Appropriate amount Purified water Residual amount * 9: TAKELITE T1135 (38% aqueous solution) The above body shampoo composition has an excellent residual aroma and is not colored over time. there were.

[0025]

INDUSTRIAL APPLICABILITY As described above in detail, the present invention is a liquid detergent composition having excellent stability against coloring over time and having excellent fragrance durability.

Continuation of front page (51) Int.Cl. ⁷ identification code FI C11D 3/50 C11D 3/50 (56) Reference JP-A-2-129297 (JP, A) JP-A-59-25898 (JP, A) JP 63-79661 (JP, A) International publication 93/09215 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) C11D 1/00-17/00 A61K 7/075 A61K 7/50 C09K 15/00-15/34 C11B 9/00

Claims (2)

(57) [Claims] 1. The following components (A) and (B) (A) Alkyl sulfate represented by the general formula (1) R ₁ OSO ₃ X (1) (wherein R ₁ has an average carbon number of 8 to 18 straight or branched chain saturated hydrocarbon groups, X is NH ₄ , NH (CH ₂ CH ₂ O
H) ₃ or Na. ) Or a polyoxyethylene alkyl ether sulfate represented by the general formula (2) R ₁ (CH ₂ CH ₂ O) nOSO ₃ X (2) (wherein R ₁ is a straight chain having an average carbon number of 8 to 18 or Branched saturated hydrocarbon group, X is NH ₄ , NH (CH ₂ CH ₂ O
H) ₃ or Na, and n is 2 or 3. )
One or more anionic surfactants selected from (B) an ionone derivative represented by the general formula (3) and / or an isomer thereof; (In the formula, R ₁ and R ₂ represent hydrogen or a methyl group, and R ₃ represents a methyl group or an ethyl group.) A methylcyclopentenone derivative represented by the general formula (4): (Wherein R ₁ represents a saturated or unsaturated hydrocarbon group) and a liquid detergent composition containing a perfume containing one or more compounds selected from eugenol and having a reducing power. Add antioxidant to add fragrance
A liquid detergent composition having excellent durability . 2. The liquid detergent composition according to claim 1, wherein the antioxidant having reducing power is sulfite and / or bisulfite.