CN1891195B - Surfactant composition - Google Patents

Abstract

The present invention provides a surfactant composition that can be used for the production of skin cleansers such as shampoos and body washes or hair cleansers, which can be used in relatively high concentration even if it contains polyoxyethylene alkyl ether sulfate or alkyl sulfate. It has good fluidity in a wide range of temperatures, does not cause viscosity increase and gelation when diluted, and does not reduce the original performance of the surfactant. The surfactant composition contains components (A) polyoxyethylene alkyl ether sulfate or alkyl sulfate represented by general formula (1), (B) alkylene oxide of alcohol represented by general formula (2) The adduct and (C) water-soluble salts, and the content of component (A) is 40% by weight or more. R ¹ O(CH ₂ CH ₂ O) _n SO ₃ M (1)R ² O-(AO) _m -R ³ (2)

Description

Surfactant composition

technical field

The present invention relates to a surfactant composition that can be used for the production of skin cleansers such as shampoos and body washes or hair cleansers, which can be used in relatively high concentration even if it contains polyoxyethylene alkyl ether sulfate or alkyl sulfate. It has good fluidity in a wide range of temperatures, does not cause viscosity increase and gelation when diluted, and does not reduce the original performance of the surfactant.

Background technique

Commonly used polyoxyethylene alkyl ether sulfates or alkyl sulfates have very poor fluidity at high concentrations and are difficult to handle. In order to make it easy to handle, it is processed at a concentration of 30% by weight or less or within an extremely small range of viscosity. Therefore, various methods of adding a third component (viscosity reducer) whose performance is not affected by the use of polyoxyethylene alkyl ether sulfate or alkyl sulfate, and increasing the concentration and reducing the viscosity have been tried. For example, a method of adding a sulfonate salt of an unsaturated fatty acid polyalkylene alkyl ester and a salt of an α-sulfonic acid polyalkylene alkyl ester has been proposed (Japanese Patent Application Laid-Open No. 10-17898), adding an alkyl Various methods such as the method of glycosides and alkali metal salts (WO91/04313). However, depending on the application, performance is adversely affected, and there are restrictions that cannot be applied. In addition, fluidity at low temperatures deteriorates, and heating is required for use when blended with detergents, which is not sufficient.

In addition, Japanese Patent Application Laid-Open No. 10-17898 or the method of 2WO91/04313 describe the fluidity improvement effect from around room temperature (20°C) to 70°C, but do not describe the fluidity around low temperature (5°C). improve.

On the other hand, Japanese Patent Application Laid-Open No. 2004-277685 discloses that an anionic surfactant such as polyoxyethylene alkyl ether sulfate is added with the formula: R ¹ O-(CH ₂ CH ₂ O) _n Polyethylene glycol mono- or dialkyl ether represented by ^-R2 ( ^R1 is a linear alkyl group with 8 to 12 carbon atoms, ^R2 is a hydrogen atom or a methyl group, and n is an integer of 1 to 3), And a liquid detergent composition comprising electrolytes such as salt and sodium sulfate as optional components. But, in Japanese Patent Application Laid-Open No. 2004-277685, only specifically related to the thickening and foaming effect, and about the above-mentioned composition (polyethylene glycol) of high concentration polyoxyethylene alkyl ether sulfate or alkyl sulfate There is no description of the improvement of flowability due to the visbreaking effect brought about by mono- or dialkyl ethers.

In addition, Japanese Patent Application Laid-Open No. 2004-352943 describes the addition of anionic surfactants such as polyoxyethylene alkyl ether sulfates, alkylene oxide adducts of 2-ethylhexanol, and water-soluble surfactants such as magnesium chloride. Liquid detergent compositions of magnesium compounds, but in essence only disclose liquid detergent compositions using polyoxyethylene alkyl ether sulfates or alkyl sulfates at low concentrations, and only know the composition at 20°C A low-viscosity composition with a viscosity of 10 to 1000 mPa·s deteriorates the feeling of use when used as a skin cleanser or hair cleanser such as shampoo or body wash.

Contents of the invention

Thus, high concentrations of polyoxyethylene alkyl ether sulfates or alkyl sulfates have poor fluidity at high viscosities. Therefore, there is a problem that the handling property is poor, and gelation occurs when a high-concentration substance is diluted and used.

The object of the present invention is to provide a surfactant composition that can be used for the production of skin cleansers such as shampoos and body washes or hair cleansers, which can be used even if it contains polyoxyethylene alkyl ether sulfate or alkyl sulfate in a high concentration. It can have good fluidity in a wide range of temperature, and will not increase the viscosity and gelation when diluted, and will not reduce the original performance of the surfactant.

The inventors of the present invention found that by adding a specific alcohol alkylene oxide adduct to polyoxyethylene alkyl ether sulfate or alkyl sulfate, and then combining water-soluble salts, it is possible to obtain a The surfactant composition of skin detergent or hair detergent such as liquid, which has good fluidity in a wide range of temperatures, does not cause viscosity increase and gelation when diluted, and does not reduce the original surfactant content. performance.

That is, the present invention provides a surfactant composition containing the following components (A), (B) and (C), and the content of component (A) is 40% by weight or more, the composition The viscosity at 30°C is 1000-70,000 mPa·s,

(A) polyoxyethylene alkyl ether sulfate or alkyl sulfate represented by general formula (1) [hereinafter also referred to as component (A)];

R ¹ O(CH ₂ CH ₂ O) _n SO ₃ M (1)

(In the formula, ^R1 represents a saturated or unsaturated hydrocarbon group with 8 to 18 carbon atoms, the average added mole number n represents a number from 0 to 5, and M represents an alkali metal atom, alkanolamine or ammonium)

(B) an alkylene oxide adduct of alcohol represented by general formula (2) [hereinafter also referred to as component (B)];

R ² O-(AO) _m -R ³ (2)

(In the formula, ^R2 represents a linear or branched alkyl or alkenyl group with 6 to 10 carbon atoms, AO represents an oxyalkylene group with 2 to 4 carbon atoms, and the average added mole number m represents 1 ~3, ^R3 represents a hydrogen atom or a methyl group)

(C) Water-soluble salts [Hereinafter also referred to as component (C)].

Detailed ways

The present invention can provide a surfactant composition that can be used in the production of skin cleansers such as shampoos and body washes or hair cleansers, which can be used in the production of polyoxyethylene alkyl ether sulfates or alkyl sulfates in high concentrations. It has good fluidity in a wide range of temperatures, does not cause viscosity increase and gelation when diluted, and does not reduce the original performance of surfactants such as foaming and use feeling.

Hereinafter, the present invention will be described in more detail.

In the polyoxyethylene alkyl ether sulfate or alkyl sulfate represented by the above-mentioned general formula (1) of the component (A) used in the present invention, ^R is a saturated or unsaturated compound having 8 to 18 carbon atoms. The hydrocarbon group has preferably 10 to 16 carbon atoms, more preferably 12 to 14 carbon atoms, and is preferably a saturated hydrocarbon group. The hydrocarbon group of ^R1 can be a straight chain or a branched chain, preferably a straight chain. The average addition mole number n represents the number of 0-5, Preferably it is 0.5-5, More preferably, it is 1-3, More preferably, it is 1-2. M represents an alkali metal atom, alkanolamine or ammonium. Examples of the alkali metal atom include sodium, potassium, and the like, and sodium is preferred. As the alkanolamine, triethanolamine is preferred. Component (A) is a component which exhibits the original performance of a surfactant.

From the viewpoint of fluidity, component (A) is preferably contained in the surfactant composition in an amount of 40 to 70% by weight, more preferably 45 to 70% by weight, still more preferably 45 to 65% by weight, and particularly preferably more than 50% by weight. % but not more than 70% by weight, more particularly preferably more than 50% by weight but not more than 65% by weight.

In the alkylene oxide adduct of alcohol represented by the above-mentioned general formula (2) of the component (B), ^R2 is a straight chain or a carbon number of 6 to 10 from the viewpoint of foamability and usability. Branched alkyl or alkenyl, preferably branched alkyl or straight or branched alkenyl with 6 to 10 carbon atoms, more preferably branched alkyl with 6 to 10 carbon atoms, further It is preferably an alkyl group having 8 to 10 carbon atoms, especially an alkyl group having 8 carbon atoms.

AO is an oxyalkylene group having 2 to 4 carbon atoms, preferably an oxyalkylene group having 2 to 3 carbon atoms, particularly 3. Specific examples thereof include oxyethylene groups, oxypropylene groups, and oxybutylene groups, among which oxyethylene groups and oxypropylene groups are preferable, and oxypropylene groups are particularly preferable. From the viewpoint of the viscosity reducing effect at low temperature, the average added mole number m represents a number of 1 to 3, more preferably 1.5 to 3, further preferably 2 to 3, and particularly preferably 2 to 2.8.

When the component (B) with the largest number of added moles of AO is expressed as AO _max , from the viewpoint of economical efficiency such as reducing the burden of manufacturing costs such as purification, and from the viewpoint of improving the usability by eliminating roughness after towel drying Starting from this, AO _max is preferably 70% by weight or less of the entire component (B), more preferably 60% by weight or less, particularly preferably 50% by weight or less. In particular, when AO is an oxyalkylene group having 2 carbon atoms, that is, an oxyethylene group, AO _max is preferably 60% by weight or less, more preferably 50% by weight or less, and particularly preferably 40% by weight of the entire component (B). or below. In addition, especially when AO is an oxyalkylene group having 3 carbon atoms, that is, an oxypropylene group, AO _max is preferably 70% by weight or less of the entire component (B), more preferably 60% by weight or less, and particularly preferably 50% by weight. % by weight or less.

R ³ represents a hydrogen atom or a methyl group, particularly preferably a hydrogen atom.

Component (B) can be obtained easily by adding AO (alkylene oxide) to alcohol. AO _max can be adjusted by isolating and purifying the obtained alkylene oxide adduct of alcohol.

Component (B) is a component that suppresses thickening of component (A) at low temperatures and thereby improves fluidity. That is, the component (B) functions as a low-temperature viscosity reducer for the component (A).

Component (B) can be used singly or in combination. From the viewpoint of the effect of improving fluidity at a concentration of 40% by weight or more, the blending of components (A) and (B) in the surfactant composition of the present invention The ratio is (A)/(B)=99/1 to 75/25 by weight, preferably 98/2 to 85/15, more preferably 97/3 to 90/10. Within this range, a sufficient fluidity-improving effect can be exhibited.

From the viewpoint of improving fluidity, especially fluidity at low temperatures, component (B) is preferably contained in the surfactant composition at 0.5 to 15% by weight, more preferably at 1 to 10% by weight, particularly preferably at 2 to 10% by weight. 8% by weight.

The water-soluble salts of the component (C) are preferably one or more selected from water-soluble inorganic salts and water-soluble organic salts other than surfactants. Examples include salts of organic acids such as citric acid, malic acid, succinic acid, and lactic acid, or inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, carbonic acid, and phosphoric acid. In addition, examples of the cation forming the salt include sodium, potassium, and the like. Alkali metal or ammonium, aluminum, etc. Preferred specific examples of these salts include alkali metal salts of inorganic acids such as sodium chloride and sodium sulfate; ammonium salts of inorganic acids such as ammonium chloride, ammonium sulfate and ammonium nitrate; and organic acids such as trisodium citrate. Alkali metal salts of (particularly preferably aliphatic organic acids) and ammonium salts of organic acids (particularly preferably aliphatic organic acids), etc., from the viewpoint of the feeling of use when used as a skin cleanser or hair cleanser, inorganic acids are particularly preferred One or more of alkali metal salts or ammonium salts of inorganic acids can be used. Component (C) is a component that exhibits the fluidity-improving effect of component (A) at room temperature. When components (B) and (C) are combined, the fluidity of component (A) can be doubled over a wide temperature range.

From the viewpoint of the effect of improving the fluidity when the concentration of component (A) is 40% by weight or more, the compounding ratio of components (A) and (C) in the surfactant composition of the present invention is preferably (A)/(C)=99/1 to 85/15, more preferably 99/1 to 90/10, particularly preferably 98/2 to 95/5. Within this range, a sufficient fluidity-improving effect can be exhibited.

From the viewpoint of fluidity, component (C) is preferably contained in the surfactant composition at 0.1 to 10% by weight, more preferably at 0.2 to 8% by weight, even more preferably at 0.5 to 5% by weight, and particularly preferably at 1 to 4% by weight. weight%.

From the standpoint of improved fluidity and excellent workability, the viscosity of the surfactant composition of the present invention at 30°C is preferably 1000 to 70,000 mPa·s, more preferably 1000 to 50,000 mPa·s, particularly preferably 3000-50,000 mPa·s, preferably 90,000-50,000 mPa·s viscosity at 5°C, more preferably 1,000-70,000 mPa·s, particularly preferably 5,000-50,000 mPa·s.

In the present invention, the fluidity of the composition containing 40% by weight or more of component (A) at a high concentration and the solubility at the time of dilution are improved over a wide temperature range by simultaneously using component (B) and component (C) and achieved.

With a high concentration of component (A), fluidity at low temperature (5°C) is improved by adding component (B), and fluidity at normal temperature (30°C) is improved by adding component (C). Furthermore, by using the component (B) and the component (C) in combination, the fluidity|liquidity can be doubled in the wide temperature range from low temperature to normal temperature. Furthermore, since the surfactant composition obtained in this way does not increase in viscosity when diluted, and does not cause gelation, it can be easily compounded. The detergent composition obtained by blending is a composition with good foamability and excellent usability.

The surfactant composition of the present invention can be produced by stirring and mixing components (A), (B) and (C) at a temperature of 15 to 60°C. Furthermore, the dosage form is not particularly limited, but it is preferably in the form of a liquid, a paste, or a paste. It is preferable to use a solvent during production, and water is particularly preferable as the solvent.

The surfactant compositions of the present invention are useful in the manufacture of detergent compositions. Other surfactants and/or water may be further blended during production. In addition, the surfactant composition of the present invention can be used as a detergent composition after being diluted with water, and can also be used as a detergent composition used in skin cleansers such as facial cleanser and body wash, or hair cleansers such as shampoo. These surfactant compositions are blended into detergent compositions, and arbitrary components may be blended according to the purpose thereof. Here, examples of optional components include anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants, and adjustment components other than component (A) normally blended in these detergents. .

Examples of anionic surfactants other than component (A) include fatty acid salts, phosphate ester salts, sulfosuccinic acid-based surfactants, polyoxyalkylene alkylamide ether sulfates, monoglyceride sulfates, olefin Sulfonates, alkane sulfonates, acylated isethionates, acylated amino acid salts, polyoxyalkylene alkyl ether phosphates, polyoxyalkylene alkyl ether acetates, etc.

Examples of the nonionic surfactant include alkyl polyglycosides, sucrose fatty acid esters, polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, fatty acid alkanolamides, alkylamine oxides, and fatty acid polyol esters.

Examples of amphoteric surfactants include amide betaine surfactants, amide amino acid surfactants, carbobetaine surfactants, sultaine surfactants, amide sultaine surfactants, imidazole Phytobetaine surfactants, phosphobetaine surfactants, etc.

As cationic surfactant, can enumerate the following general formula (3)

[In the formula, at least one of R ⁴ , R ⁵ , R ⁶ and R ⁷ represents an alkyl group with a total carbon number of 8 to 28 and an alkoxy, alkenyloxy, alkanolamino or alkenylamino group that can be substituted or alkenyl, and the rest represent benzyl, alkyl with 1 to 5 carbon atoms, hydroxyalkyl, or polyoxyethylene groups with a total addition mole number of 10 or less; Z ^- represents a halogen ion or an organic anion] represents of quaternary ammonium salts.

Examples of adjusting components include higher alcohols such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, silicone and silicone derivatives, lanolin, squalene, hydrocarbons, protein derivatives, polyethylene glycol Surfactants such as fatty acid esters, cationic polymers such as cationic cellulose, cationic guar gum, Makoto 550 (manufactured by Merck), Sofcare KG-301W [manufactured by Kao Co., Ltd.], etc. Sexual group copolymers, etc.

Other ingredients commonly used in detergent compositions can be blended as needed within the range that does not impair the effect of the present invention, such as methyl cellulose, hydroxyethyl cellulose, carboxyvinyl polymer, xanthan gum, etc. Water-soluble polymers such as polysaccharides; viscosity modifiers such as polyoxyalkylene sorbitan esters, polyoxyethylene glycol distearate, ethanol, etc.; chelating agents such as ethylenediaminetetraacetic acid (EDTA), phosphates, etc. ; preservatives such as methyl p-hydroxybenzoate and butyl p-hydroxybenzoate; active ingredients such as vitamins or their precursors; animal and plant extracts such as lecithin and gelatin or their derivatives; polymer micropowders such as nylon or polyethylene Anti-inflammatory agents such as dipotassium glycyrrhizinate; fungicides and anti-dandruff agents such as triclosan, trichlorocarban, octopirox, and zinc pyrithione; dibutyl Antioxidants such as hydroxytoluene; pearlescent agent, ultraviolet absorber, pH adjuster, pigment, fragrance, water.

The detergent composition of the present invention can be produced according to a conventional method by blending other surfactants and/or water with the surfactant composition of the present invention. The dosage form is not particularly limited, and can be in any dosage form such as liquid, paste, paste, solid, powder, etc. It is preferably made into a liquid, paste, or paste, and is particularly preferably made into a liquid. When it is made into a liquid form, it is preferable to use water as a liquid medium.

Example

Hereinafter, an Example is given and it demonstrates in more detail.

Examples 1-48, Comparative Examples 1-17

The surfactant compositions shown in Tables 1 to 6 were prepared according to the usual method, and the viscosity and fluidity of the surfactant composition at 30°C and 5°C, and the 15% by weight aqueous solution as component (A) were analyzed by the following method The foaming power was evaluated. The results are shown in Tables 1-6 together. Component (B) of Examples 1 to 48 and Comparative Examples 12 to 13 can be produced by adding alkylene oxide (specifically, octanol, decyl alcohol, or hexanol) to alcohol (specifically, octanol, decyl alcohol, or hexanol) in the presence of a base catalyst. For propylene oxide or ethylene oxide) and the system. Dipropylene glycol monodecyl ether ( ^* 5 in tables 1 to 6), ethylene glycol monooctyl ether ( ^* 7 in tables 1 to 6), diethylene glycol mono-2-ethylhexyl ether (* 5 in tables 1 to 6 ⁾ 10), ethylene glycol mono-2-ethylhexyl ether ( ^* 11 in Tables 1 to 6) and dipropylene glycol mono-2-ethylhexyl ether ( ^* 13 in Tables 1 to 6) were used directly after neutralization. Dipropylene glycol monohexyl ether ( ^* 6 in Table 1-6), propylene glycol monooctyl ether ( ^* 8 in Table 1-6) and propylene glycol monooctyl ether ( ^* 9 in Table 1-6) were neutralized by reducing Use pressure distillation to remove unreacted alcohol. Dipropylene glycol monooctyl ether ( ^* 3 in Tables 1 to 6), propylene glycol monooctyl ether ( ^* 4 in Tables 1 to 6) and diethylene glycol monoisodecyl ester ( ^* 12 in Tables 1 to 6) are neutralized in the reaction Afterwards, distilled products were obtained by distillation under reduced pressure. ^* 5 to ^* 11 and ^* 13 in Tables 1 to 6 showed that AO _max was 50% by weight or less of the whole component (B) by GC.

In addition, when component (A) of the surfactant composition of Examples 1 to 48 is diluted to 15% by weight, it can be easily diluted at room temperature (within 5 minutes) with little gel formation. . However, when component (A) of the surfactant compositions of Comparative Examples 1 to 6, 9, 12, 13, 15, and 17 was diluted to 15% by weight, gel was produced, and the dilution at room temperature required a long time. time (about 1 hour). When the component (A) of the surfactant composition of Comparative Examples 7, 8, 10, 14 and 16 was diluted to 15% by weight, some gels were produced, and the dilution at room temperature required some time (15 to 30 minutes).

(1) Viscosity measurement

The measurement conditions of the viscosity are as follows.

Viscometer B type viscometer (manufactured by Tokyo Instruments Co., Ltd.)

Rotor No./Rotation No.4/6rpm Determination time 1 minute

Temperature 30°C: measure after keeping the glass bottle filled with the sample in a constant temperature bath at 30°C±1 for 1 hour

Temperature 5°C: Measured after keeping it in a thermostat at 5°C±1 for 24 hours

(2) Liquidity

A glass bottle (4 cm in diameter, 10 cm in height) filled with 50 g of the surfactant composition was tilted at 90 degrees, and visually evaluated.

Temperature 30°C: Keep the glass bottle containing the sample in a constant temperature bath at 30°C±1 for 1 hour before evaluating

Temperature 5°C: Evaluation after 24 hours in a thermostat at 5°C±1

(fluidity)

A: good fluidity

B: slightly fluid

C: no liquidity

(3) Foaming test

Rapid foaming and foaming when 1 ml of the surfactant composition diluted to 15% by weight as component (A) was dropped in the palm of the hand and washed the hands and wrists were evaluated by 10 professional panelists according to the following evaluation criteria. The amount was compared with an unadded product [15% aqueous solution of sodium polyoxyethylene alkyl ether sulfate (n=2)].

(rapid foaming)

4: Rapid foaming is very good

3: Rapid foaming property is good

2: Rapid foaming property is slightly inferior

1: Poor rapid foaming property

(bubble volume)

4: Compared with the unadded product, the foam volume is very large

3: Compared with the non-added product, the foam volume is more

2: Compared with the unadded product, the foam volume is the same

1: Compared with the non-added product, the foam volume is less

(feel when washing)

4: Compared with the non-added product, it feels better

3: Compared with the unadded product, the feeling is slightly better

2: Compared with the non-added product, the feeling is the same

1: Compared with the non-added product, the feeling is inferior

(feel when washing)

4: Compared with the non-added product, it feels better

3: Compared with the unadded product, the feeling is slightly better

2: Compared with the non-added product, the feeling is the same

1: Compared with the non-added product, the feeling is inferior

(feel after towel drying)

4: Compared with the non-added product, it feels better

3: Compared with the unadded product, the feeling is slightly better

2: Compared with the non-added product, the feeling is the same

1: Compared with the non-added product, the feeling is inferior

Calculate the average value of 10 people's evaluations, and mark 3.6 or more as A, 2.6 to 3.5 as B, 1.6 to 2.5 as C, and 1.5 or less as D.

Example 49

Make a body wash of the following composition.

Ingredient % by weight

Surfactant composition of embodiment 5 5.0

Sodium laurate 6.0

Sodium myristate 3.0

Sodium palmitate 1.0

2-Ethylhexylglyceryl ether 1.0

Glycerin 3.0

Methylparaben qs

Spices Appropriate amount

Refined water Supplementary quantity

Total 100.0

This body wash had no increase in viscosity when the surfactant composition of Example 5 was diluted, could be easily compounded, had good foamability, and was excellent in usability.

Example 50

A shampoo of the following composition was manufactured.

Ingredient % by weight

Surfactant composition of embodiment 2 15.0

Amidopropyl Betaine ^* 2.0

Myristyl alcohol 1.0

Cationized Guar Gum ^** 0.5

Ethanol 3.0

Spices Appropriate amount

Refined water Supplementary quantity

Total 100.0

^* : Amphitol 20AB (manufactured by Kao Co., Ltd.)

^** : JAGUAR C-13S (manufactured by Rhodia)

This shampoo has no viscosity increase when the surfactant composition of Example 2 is diluted, can be easily compounded, has good foamability, and has excellent usability.

Example 51

A shampoo of the following composition was manufactured.

Ingredient % by weight

Surfactant composition of embodiment 14 16.0

Coconut Fatty Acid N-Methylethanolamide ^* 1.0

Myristyl alcohol 1.0

Cationized Guar Gum ^** 0.5

Ethanol 3.0

Spices Appropriate amount

Refined water Supplementary amount

Total 100.0

^* : Aminon C-11S (manufactured by Kao Co., Ltd.)

^** : JAGUAR C-13S (manufactured by Rhodia)

This shampoo did not increase in viscosity when the surfactant composition of Example 14 was diluted, was easily compounded, had good foamability, and was excellent in usability.

Example 52

Make a body wash of the following composition.

Ingredient % by weight

Surfactant composition of Example 29 5.0

Sodium laurate 6.0

Sodium myristate 3.0

Sodium palmitate 1.0

2-Ethylhexylglyceryl ether 1.0

Glycerin 3.0

Methylparaben qs

Spices Appropriate amount

Refined water Supplementary quantity

Total 100.0

This body wash had no increase in viscosity when the surfactant composition of Example 29 was diluted, was easily compounded, had good foamability, and was excellent in usability.

Example 53

A shampoo of the following composition was manufactured.

Ingredient % by weight

Surfactant composition of Example 36 15.0

Amidopropyl Betaine ^* 2.0

Myristyl alcohol 1.0

Copolymers with cationic groups ^** 0.2

Ethanol 3.0

Spices Appropriate amount

Refined water Supplementary quantity

Total 100.0

^* : Amphitol 20AB (manufactured by Kao Co., Ltd.)

^** : Sofcare KG-301W (manufactured by Kao)

This shampoo did not increase in viscosity when the surfactant composition of Example 36 was diluted, and could be easily compounded, had good foamability, and was excellent in usability.

Claims (11)

1. A surfactant composition comprising the following ingredients (A), (B) and (C), and the content of ingredient (A) in the surfactant composition is 40% by weight or more , the ratio (A)/(B) of the components (A) and (B) is 99/1 to 75/25 by weight, and the ratio (A)/(C) of the components (A) and (C) is The weight ratio is 99/1 to 85/15, and the viscosity of the composition at 30°C is 1000 to 70,000 mPa·s, (A) polyoxyethylene alkyl ether sulfate or alkyl sulfate represented by general formula (1), R ¹ O(CH ₂ CH ₂ O) _n SO ₃ M (1) Wherein, R ¹ represents a saturated or unsaturated hydrocarbon group with 8 to 18 carbon atoms, the average added mole number n represents a number from 0 to 5, and M represents an alkali metal atom, alkanolamine or ammonium; (B) an alkylene oxide adduct of alcohol represented by general formula (2), R ² O-(AO) _m -R ³ (2) Among them, R ² represents a straight-chain or branched alkyl or alkenyl group with 6 to 10 carbon atoms, AO represents an oxyalkylene group with 2 to 4 carbon atoms, and the average added mole number m represents 1 to 3 The number, R ³ represents a hydrogen atom or a methyl group; (C) Water-soluble salts, which are one or more selected from alkali metal salts of inorganic acids, ammonium salts of inorganic acids and alkali metal salts of organic acids. 2. The surfactant composition according to claim 1, wherein AO of the component (B) is an oxyalkylene group having 3 to 4 carbon atoms. 3. The surfactant composition according to claim 1, wherein when the component with the largest number of added moles in the AO of the component (B) is expressed as AO _max , AO _max is 70% by weight of the whole component (B) % or less. 4. The surfactant composition according to claim 1, wherein R in the general formula ( ² ) is a branched alkyl group or a linear or branched alkenyl group having 6 to 10 carbon atoms. 5. The surfactant composition according to claim 1, wherein R in the general formula ( ² ) is a branched chain alkyl group having 6 to 10 carbon atoms. 6. The surfactant composition according to any one of claims 1 to 5, which has a viscosity at 5°C of 90,000 mPa·s or less. 7. The surfactant composition according to any one of claims 1 to 5, wherein component (C) is one or more selected from alkali metal salts of inorganic acids and ammonium salts of inorganic acids. 8. A detergent composition obtained by blending another surfactant and/or water with the surfactant composition according to any one of claims 1 to 5. 9. A method for producing a detergent composition, characterized in that other surfactants and/or water are blended into the surfactant composition according to any one of claims 1 to 5. 10. Use of the surfactant composition according to any one of claims 1 to 5 for the manufacture of a detergent composition. 11. The use according to claim 10, wherein other surfactants and/or water are further mixed.