JPH08209197A - Detergent composition - Google Patents

Abstract

PURPOSE: To obtain a detergent composition mild to the skin, well in defoaming after washing, and improved in foaming ability, touch and low-temperature stability by using a specified sulfosuccinate surfactant as the constituent. CONSTITUTION: Dodecyl alcohol is reacted with an equimolar maleic anhydride to give a monoester. This monoester is added to a suspension of sodium pyrosulfite and magnesium hydroxide in water to effect sulfonation, thus giving a sulfosuccinate surfactant of the formula (wherein R is a 10-16C aliphatic primary alcohol residue; (n) is 1 to 5; M1 and M2 are each H, an alkali metal, magnesium or a lower alkanolamine cation, provided that at least one of them is magnesium; and (m) is an ionic valence of 1 or 2). 5-50wt.% of this surfactant is mixed with 0-5wt.% of other anions and/or surfactant, 0-10wt.% lower alcohol and 40-90wt.% water, and the pH is adjusted to 5 to 8.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a detergent composition.

[0002]

2. Description of the Related Art Conventionally, a detergent composition containing a sodium sulfosuccinate type surfactant and another anionic or amphoteric surfactant has been known as a detergent composition (for example, Japanese Examined Patent Publication No. 56-43762 and Japanese Patent Publication No. 563762). Kaisho 62-127
396).

[0003]

However, the sulfosuccinic acid type surfactants to be blended in these detergent compositions have properties such as poor foamability and low temperature stability, and as a result, the entire detergent composition. However, there was a problem that the foaming property and low temperature stability were poor.

[0004]

Means for Solving the Problems The present inventors have arrived at the present invention as a result of extensive studies to develop a detergent composition containing a sulfosuccinic acid type surfactant having good foamability and stability at low temperature. That is, the present invention is a detergent composition containing a sulfosuccinic acid type surfactant represented by the general formula (1) and having a pH of 5 to 8. General formula (In the formula, R is an aliphatic primary alcohol residue having 10 to 16 carbon atoms, n is 1 to 5, M ₁ and M ₂ are hydrogen atoms, alkali metals, magnesium, ammonium or lower alkanolamine cations. _At least one of ₁ and M ₂ is magnesium, and m is 1 or 2 and represents an ionic valence.)

In the general formula (1) showing the sulfosuccinic acid type surfactant, the alcohol constituting the residue of the aliphatic primary alcohol having 8 to 22 carbon atoms of R is a linear or branched saturated or unsaturated alcohol. For example, octyl alcohol, decyl alcohol, dodecyl alcohol,
Examples include tetradecyl alcohol, hexadecyl alcohol, octadecyl alcohol, eicosyl alcohol, docosyl alcohol, oleyl alcohol and mixtures thereof. Of these, preferably having 10 to 10 carbon atoms.
16 alcohols, particularly preferably dodecyl alcohol and tetradecyl alcohol. n is preferably 0-7. Examples of the alkali metal of M ₁ and M ₂ include lithium, sodium and potassium. Examples of the alkanolamine forming the lower alkanolamine cation include mono-, di- or tri-ethanolamine, (n, iso) -propanolamine and the like. Of M ₁ and M ₂ , magnesium or magnesium and an alkali metal are preferable, and magnesium, magnesium and sodium, and magnesium and potassium are particularly preferable. Examples of the sulfosuccinic acid type surfactant represented by the general formula (1) include compounds (a) to (where R, n, M ₁ and M ₂ in the general formula (1) have groups and numerical values as shown in Table 1. Surfactants consisting of c) and their mixtures are mentioned.

[0006]

[Table 1] In the table, Mg represents 1/2 equivalent of magnesium cation.

The compounds in Table 1, for example (a), can be synthesized as follows. The monoester is obtained by reacting dodecyl alcohol and substantially equimolar maleic anhydride. This is added to a liquid prepared by suspending sodium pyrosulfite and magnesium hydroxide in water for sulfonation to obtain sodium monododecylsulfosuccinate and a magnesium equivalent of 1/2 equivalent.

If desired, the composition of the present invention may contain other anionic surfactants and amphoteric surfactants. Examples of other anionic surfactants include alkyl sulfate ester salts, alkyl ether sulfate ester salts, α-olefin sulfonates, alkyl sulfonates, taurine-based surfactants, sarcosinate-based surfactants, isethionate-based surfactants, Examples thereof include N-acyl acidic amino acid surfactants, monoalkyl phosphate ester salts, higher fatty acid salts and acylated polypeptides. Examples of the amphoteric surfactant include alkyl betaine-type surfactants, amidopropyl betaine-type surfactants and imidazolinium betaine-type surfactants. In addition to these, the composition of the present invention includes nonionic surfactants (coconut oil fatty acid diethanolamide, stearic acid monoglyceride, lauryl dimethylamine oxide, polyoxyethylene alkyl ether, polyoxy) in amounts that do not impair the effects of the present invention. Ethylene fatty acid ester, fatty acid sorbitan ester,
Polyoxyethylene fatty acid sorbitan ester, polyoxyethylene polypropylene glycol, etc.), oil base materials (cetanol, stearic acid, etc.), moisturizers (sodium pyrrolidone carboxylic acid, polyethylene glycol, etc.), lower alcohols (ethanol, propylene glycol, hexylene) Glycol, glycerin, etc.), inorganic salts (table salt, bow pepper, magnesium chloride, magnesium sulfate, etc.), chelating agents [1-hydroxy-ethane-1,1-diphosphonate, nitrilotriacetate, ethylenediaminetetraacetate, citrate , Oxalates (as salts, alkali metal salts such as sodium and potassium)], thickeners (polyethylene glycol fatty acid diester, propylene glycol fatty acid ester, polyoxyethylene methyl gluco) Such as de fatty acid esters), the polymer compound (carboxymethylcellulose, hydroxyethylcellulose, cationized cellulose, etc.), perfumes, colorants may be blended with components such as preservatives, water.

The content of the sulfosuccinic acid type surfactant (A) represented by the general formula (1) in the composition of the present invention is usually 5 to 50%, preferably 10 based on the weight of the composition.
~ 30%. It is preferable to add the minimum necessary amount for any other arbitrary amount. The pH of the composition of the present invention is 5-8, preferably 5.5-7.
Is. The pH can be adjusted with a normal alkali (caustic soda, triethanolamine, etc.) or acid (hydrochloric acid, citric acid, etc.) when necessary. The composition of the present invention may be in the form of liquid, paste, solid, powder, etc., but liquid and paste are easy to use and preferred. In the case of liquids and pastes, usually (A) is 10 to 30% by weight, lower alcohols are 0 to 10% by weight, other anions and / or amphoteric surfactants are 0 to 5% by weight, and water is 40 to 90% by weight. % Used.

The composition of the present invention can be used as a skin cleansing agent such as a body shampoo, a facial cleanser, a hand washing detergent and a hair cleansing agent such as a shampoo.
The amount and method of use may be the same as usual.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is further described below with reference to examples, but the present invention is not limited thereto. The foaming power was 15 ppm hard water (calculated as CaO), the concentration of the surfactant was 0.1% and 0.3%, and the pH was 6.
200 ml of the solution adjusted to be 0 was mixed with a juicer mixer (MX-390GN manufactured by Toshiba) at 30 ° C.
The mixture was stirred for 0 seconds, and the foamability was evaluated by the foam height (mm) at that time. The low temperature stability was evaluated according to the following criteria by observing the appearance with the naked eye after the formulation was left at 0 ° C. for 3 days. ○: Appearance transparent △: Slightly cloudy ×: Crystals precipitate and settle or cloud

[0012]

【Example】

Examples 1 and Comparative Examples 1 to 3 Sodium monododecylsulfosuccinate and 1/2 equivalent of magnesium salt 10% by weight of water Remaining amount The above ingredients are blended and the pH is adjusted to 6.5 with citric acid or triethanolamine. The composition of the present invention thus obtained was examined for foaming power and low temperature stability. For comparison, sulfosuccinic acid type surfactants in which magnesium cations were replaced with sodium, potassium and triethanolamine cations were similarly examined. Table 2 shows the results.

[0013]

[Table 2]

In M ₁ and M ₂ , Mg represents a half equivalent of a magnesium cation, and TEA represents a triethanolamine cation.

Next, a body shampoo having the following formulation was prepared. Example 2 Sodium monododecylsulfosuccinate and half equivalent magnesium salt 20% by weight magnesium sulfate heptahydrate 10 sodium α-olefinsulfonate ■ 5 hexylene glycol 5 water 60 pH: 6.5

Example 3 Sodium monohydrate and 1/2 equivalent of magnesium salt of monododecylsulfosuccinate 20% by weight magnesium sulfate heptahydrate 10 Lauryl dimethylamino acetic acid betaine 5 Polyethylene glycol 5 water 60 pH: 6.5

Example 4 Magnesium salt of monododecylsulfosuccinic acid 20% by weight magnesium sulfate heptahydrate 10 Betaine lauryldimethylaminoacetate 5 Polyethylene glycol 5 Water 60 pH: 6.5

Example 5 Monododecyl ethylene oxide 3 mol adduct Magnesium salt of sulfosuccinic acid 20% by weight magnesium sulfate heptahydrate 10 Lauryl dimethylamino acetic acid betaine 5 Polyethylene glycol 5 water 60 pH: 6.5

Comparative Example 4 Disodium salt of monododecylsulfosuccinic acid 20% by weight magnesium sulfate heptahydrate 10 Lauryl dimethylaminoacetic acid betaine 5 Polyethylene glycol 5 Water 60 pH: 6.5

Comparative Example 5 Monododecyl ethylene oxide 2 mol adduct Disodium salt of sulfosuccinic acid 20% by weight magnesium sulfate heptahydrate 10 Lauryl dimethylamino acetic acid betaine 5 Polyethylene glycol 5 water 60 pH: 6.5

The body shampoos of Examples 2 and 3 and Comparative Examples 4 and 5 were evaluated for stability at low temperature, foaming property, breakage of foam after washing, touch during use and irritation to skin. The evaluation method is as follows. The evaluation results are shown in Table 3. <Low temperature stability> As described above. <Foaming property, defoaming after washing, feel at the time of use> Five male and female panelists wash their bodies with body shampoo, foaming during use (foaming), defoaming after washing (rinsing) And the feel during use was sensory evaluated according to the following criteria. The evaluation was an average value of 10 persons. -Foamability-5: Very good foaming 4: Good foaming 3: Normal 2: Slightly bad foaming 1: Poor-Broaming after washing-5: Very good foaming-out 4: Good foaming-3 : Normal 2: Slightly defoamed 1: Poor-Feeling during use-5: Very good feel 4: Good feel 3: Normal 2: Slightly bad feel 1: Bad <Skin irritation> Men and women The body shampoo composition was applied to the inside of the upper arm of each of the 5 persons in a closed system, and the skin reaction after 24 hours was evaluated according to the following criteria. The evaluation was an average value of 10 persons. 5: No change 4: Slight lumpiness is observed 3: Swelling and slight erythema are observed 2: Erythema and slight edema are observed 1: Erythema and edema are observed

[0022]

[Table 3]

The compositions of Examples 2 to 5 are transparent liquids, and particularly the compositions of 4 and 5 have good low temperature stability, have good foaming power, and have no defoaming after washing as shown in Table 3. It was pleasant to the touch and mild to the skin.

[0024]

EFFECT OF THE INVENTION The composition of the present invention has an improved problem that the conventional detergent compositions containing a disodium sulfosuccinate-type surfactant have a poor foaming property. Thus, it is possible to obtain a cleansing composition which has good defoaming and feeling after washing, has a stable appearance, and is mild to the skin.

Claims (1)

[Claims] 1. A detergent composition containing a sulfosuccinic acid type surfactant represented by the general formula (1) and having a pH of 5-8. General formula (In the formula, R is an aliphatic primary alcohol residue having 10 to 16 carbon atoms, n is 1 to 5, M ₁ and M ₂ are hydrogen atoms, alkali metals, magnesium, ammonium or lower alkanolamine cations. _At least one of ₁ and M ₂ is magnesium, and m is 1 or 2 and represents an ionic valence.)