JPH05320692A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain a detergent compsn. reduced in irritativeness and excellent in lathering action, long-term stability and feel in use by blending an anionic amide-ether sulfate surfactant with an amine oxide surfactant. CONSTITUTION:A detergent compsn. comprises the following components (a) and (b) with (a)+(b)=5 to 40wt.% and at an (a)/(b) wt. ratio of 10/1 to 1/5. The component (a) is an anionic amide-ether sulfate surfactant of formula I. The component (b) is an amide oxide surfactant of formula II or III. In the formulae, R<1>CO is a 10-22C aliph. acyl group; R<2> is H or 1-3C alkyl; (n) is 2 to 15; M is 1/2 calcium or 1/2 magnesium; R<3> is 10-22C alkyl or alkenyl; R<4> and R<5> are each 1-3C alkyl or (R<6>O)pH; R<6> is 2-3C alkylene; p>=1; and the total no. of (R<6>O) units is at most 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition which is hypoallergenic and has excellent foaming properties, stability over time, and usability.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a mild detergent composition that is "friendly to the skin and hair" because of increased consumer awareness of safety such as rough skin and damaged hair. Attempts have been made to use a mild surfactant as such a detergent composition, and an amide ether sulfate type anionic surfactant is mentioned as one of such surfactants.

As a detergent composition using an amide ether sulfate type anionic surfactant, a detergent composition in which an alkanolamide type surfactant is combined (Japanese Patent Publication No. 1-60446) and an acyl glutamate type anion are used. Detergent composition in combination with ionic surfactant (JP-A-2-235999), detergent composition in combination with acyl-β-alaninate-type anionic surfactant (JP-A-2-222439) , A detergent composition in which a sulfosuccinate salt-type anionic surfactant is combined (JP-A-2-232298), and a detergent composition in which an alkylsuccinate-type anionic surfactant is combined (JP No. 62-129390), a detergent composition in which an alkyl ether carboxylate type anionic surfactant is combined. (JP-A-3-95100 publication), and the like.

[0004]

A conventional detergent composition using an amide ether sulfate type anionic surfactant uses an alkali metal salt such as sodium salt or an organic ammonium salt such as triethanol ammonium salt. . Although a detergent composition using a sodium salt of an amide ether sulfate type anionic surfactant is hypoallergenic, contact with the skin at a high concentration is not preferable, and a hypoallergenic detergent composition. Things were being sought.
Further, a detergent composition using a triethanolammonium salt of an amide ether sulfate type anionic surfactant is very low in irritation and preferable, but has a drawback that it is easily colored over time. In addition, the detergent composition using the amide ether sulfate type anionic surfactant has the drawback that the foam is not elastic and the foam is not persistent.

An object of the present invention is to solve the above-mentioned problems and to provide a detergent composition which is low in irritation, excellent in foamability, stable over time, and excellent in feeling of use.

[0006]

The present invention contains the following (a) and (b), wherein (a) + (b) is 5 to 40% by weight, and the weight ratio of (a) and (b) is: Is 10/1 to 1/5. (A) Amide ether sulfate type anionic surfactant represented by formula (1) (b) Amine oxide type surfactant represented by formula (2) or formula (3)

[0007]

[Chemical 4]

[0008]

[Chemical 5]

[0009]

[Chemical 6]

The amide ether sulfate type anionic surfactant represented by the formula (1) of (a) has an R ¹ CO of an aliphatic acyl group having 10 to 22 carbon atoms, for example, a lauroyl group and a myristoyl group. , Palmitoyl group, stearoyl group, oleoyl group, cocoyl group and the like. When the carbon number is 9 or less, irritation to hair and skin becomes strong and the carbon number is 2
When it is 3 or more, the foaming property is lowered. R ² is hydrogen or has 1 carbon atom
To 3 alkyl groups, and examples thereof include a methyl group, an ethyl group and a propyl group. n is a number from 2 to 15, and when n is less than 2, irritation to hair and skin becomes strong, and when n exceeds 15, foaming property is deteriorated. M is 1/2 calcium and 1/2 magnesium.

In the amine oxide type surfactant represented by the formula (2) of (b), R ³ is an alkyl group or an alkenyl group having 10 to 22 carbon atoms, and for example, a lauryl group, a myristyl group, a palmityl group, Examples thereof include a stearyl group, an oleyl group, and a coconut oil alkyl group. When the carbon number is 9 or less, irritation to hair and skin becomes strong, and when the carbon number is 23 or more, foaming property decreases. R ⁴ and R ⁵ are alkyl groups having 1 to 3 carbon atoms or
- (R ⁶ O) shows the _p H, R ⁶ is an alkylene group having 2 to 3 carbon atoms,
p is the number of 1 or more, in the formula - (R ^{6 O)} - The total number of units is 30 or less, foaming property deteriorates more than 30.

In the amine oxide type surfactant represented by the formula (3), R ⁷ CO is an aliphatic acyl group having 10 to 22 carbon atoms, and examples thereof include lauroyl group, myristoyl group, palmitoyl group, stearoyl group and oleoyl group. Examples thereof include an oil group and a cocoyl group. When the carbon number is 9 or less, irritation to hair and skin becomes strong, and when the carbon number is 23 or more, foaming property decreases. R
⁸ , R ⁹ is an alkyl group having 1 to 3 carbon atoms or-(R ¹⁰ O) _q H
R ¹⁰ is an alkylene group having 2 to 3 carbon atoms, q is a number of 1 or more, and the total number of — (R ¹⁰ O) — units in the formula is 30 or less,
If it exceeds, the foaming property deteriorates.

(A) + (b) is 5 to 40% by weight, but 5% by weight
If it is less than 40% by weight, the foaming property is inferior, and if it exceeds 40% by weight, the irritation becomes strong. The weight ratio of (a) and (b) is 10/1 to 1/5, but 10/1
When it exceeds, the persistence of the foam decreases, and when it is less than 1/5, the irritation becomes strong.

The detergent composition of the present invention further comprises components that are commonly added, for example, amphoteric surfactants such as aminoacetic acid betaine-type amphoteric surfactants, amidobetaine-type amphoteric surfactants, and imidazoline-type amphoteric surfactants. Etc., nonionic surfactants such as alkyl polyoxyethylene ether type nonionic surfactants, higher fatty acid polyoxyethylene ester type nonionic surfactants, higher fatty acid polyhydric alcohol ester type nonionic surfactants , Foaming agents such as fatty acids and higher alcohols, humectants such as glycerin and ethylene glycol, squalane, jojoba oil, olive oil, castor oil, lanolin, oils such as lecithin, cationic modified cellulose ether derivatives, polyvinylpyrrolidone derivatives 4 Ammonium salt, polyacrylic acid derivative quaternary ammonium salt Polyamide derivative quaternary ammonium salt, diallyldimethylammonium chloride polymer, copolymer of diallyldimethylammonium chloride and acrylamide, cationic polymer compounds such as alkyl polyethyleneimine, and other natural extracts derived from animals and plants, fragrances, coloring agents, preservatives Agents and the like can be appropriately blended within a range that does not impair the effects of the present invention.

[0015]

EXAMPLES The present invention will be specifically described with reference to examples. Examples 1-8 and Comparative Examples 1-12 The cleaning composition shown in Tables 1-3 was prepared, and the performance as a body shampoo was evaluated by the following methods. The results are shown in Tables 1-3.

(1) Skin irritation The protein denaturation rate was evaluated. That is, using water-based high performance liquid chromatography, using a pH7 buffer solution of ovalbumin 0.025 wt% concentration, to measure the height of the absorption peak of 220nm when the sample was added to a sample concentration of 1%, The protein denaturation rate was calculated from the following formula. Protein denaturation rate (%) = [(H0-HS) / H0] × 100 H0: Height of absorption peak when sample is not added HS: Height of absorption peak when sample is added It was evaluated on a 4-point scale. Very low skin irritation (protein denaturation rate less than 30%) Weak skin irritation (protein denaturation rate 30% to less than 60%) Moderate skin irritation (protein denaturation rate 60% to less than 80%) Skin irritation Strong (protein denaturation rate of 80% or more)

(2) Foaming property An aqueous solution having a sample concentration of 1% was prepared and subjected to the Ross Miles method.
The foam height was measured at 25 ° C. immediately after the sample was charged and after 5 minutes. A foam having a foam height of 150 mm or more immediately after the introduction of the sample and having a foam persistence rate of 90% or more obtained by the following formula was evaluated as a cleaning agent having good foaming. Persistence of foam (%) = [(foam height after 5 minutes) / (foam height immediately after sample introduction)] x 100

(3) Feeling of sliminess after rinsing Using 20 women as panelists, 5 ml of the detergent composition on a sponge for bath was used to wash the fingers and forearms, and 1 liter of warm water at about 40 ° C. Was used to evaluate the slimy feeling after rinsing three times while flowing. 4 points if you feel no slimy feeling, 3 points if you feel almost no slimy feeling,
If you feel that you have a slight slimy feel, then 2 points, and if you feel that you feel a slimy feel is 1 point, calculate the average value of 20 people. evaluated.

(4) Refreshing feeling after rinsing Using 20 women as panelists, 5 ml of the detergent composition was placed on a sponge for bath, the fingers and forearms were washed, and the water was poured with 1 liter of warm water at about 40 ° C. The refreshing feeling after rinsing three times was evaluated. If you feel refreshed, 4 points,
The average value of 20 people was calculated by averaging 3 points when you felt that there was a slight refreshing feeling, 2 points when you felt that there was little refreshing feeling, and 1 point when you felt that there was no refreshing feeling at all. A cleaning agent having a value of 3.0 or more was evaluated as a cleaner having a refreshing feeling after cleaning.

(5) Stability over time The sample was stored at -5 ° C, 25 ° C and 45 ° C for 1 month, and its appearance was observed and evaluated according to the following three grades. ◯: Good stability (transparent or slightly turbid state, no change in appearance) Δ: Slightly poor stability (slightly turbid or colored) X: Poor stability (precipitate formed, solidified, or markedly colored)

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

It can be seen from Tables 1 to 3 that the detergent compositions of Examples 1 to 8 of the present invention have low irritation, a sufficient refreshing feeling after use, and excellent foamability and stability over time. it is obvious. Comparative Example 1 containing only the component (a) has a low foam retention rate.
Comparative Example 2 in which only the component (a) and M in the formula (1) is sodium is highly irritating and has a low foam retention rate. Comparative Example 3 in which M of the formula (1) is triethanolammonium because of only the component (a) has poor stability over time and a low foam retention rate. Comparative Example 4 in which M in the formula (1) is sodium is highly irritating, and the slimy feeling after rinsing is slightly persistent. Comparative Example 5 in which M in the formula (1) is triethanolammonium has poor stability over time. Comparative Example 6 in which (a) + (b) is less than 5% by weight has a low foaming property and a refreshing feeling after rinsing cannot be obtained. Comparative Example 7 in which (a) + (b) exceeds 40% by weight has strong irritation and has a slightly persistent slimy feel after rinsing. Comparative Example 8 in which the weight ratio of (a) and (b) exceeds 10/1 has a low foam retention rate. (a)
Comparative Example 9 in which the weight ratio of (b) to less than 1/5 is strong in irritation.
Comparative Example 10 in which sodium lauryl sulphate was used instead of (a) had strong irritation, bad feeling in use, and poor stability over time. (a)
Comparative Example 11 in which polyoxyethylene (3 mol) lauryl ether sulfate sodium salt was used in place of the above had strong irritation, had a slightly persistent slimy feel after rinsing, and had poor stability over time. Comparative Example 1 using polyoxyethylene (3 mol) lauryl ether sulphate magnesium salt instead of (a)
2 is highly irritating.

Example 9 A face-wash foam composition was prepared according to the formulation shown in Table 4 and evaluated by the methods described below. The results are shown in Table 4. When this face wash foam composition was evaluated, it was low in irritation, did not have a slimy feeling during use, and a refreshing feeling was obtained after use, and there was no feeling of tightness on the skin, and it was excellent in foamability and stability over time. . The method for evaluating the facial cleansing foam composition was the same as that of Examples 1 to 8 with respect to skin irritation, foaming property, and temporal stability, and the other methods were as follows.

(1) Slickness at the time of rinsing Twenty women were panelists, and the face was washed with 5 ml of the composition, and the slickness at the time of rinsing was evaluated. 4 points when you feel no slimy feeling, 3 points when you feel almost no slimy feeling
The average value of 20 people was calculated with a score of 2, a feeling of sliminess was 2 points, and a feeling of sliminess was 1 point, and an average value of 3.0 or more was evaluated as a composition without sliminess. did.

(2) Refreshing sensation after washing the face With 20 women as panelists, the face was washed with 5 ml of the composition and the refreshing sensation after rinsing was evaluated. 4 points when you feel a refreshing feeling, 3 points when you feel a refreshing feeling a little
20 points, 2 points when you feel that there is almost no refreshing feeling, 1 point when you feel that there is no refreshing feeling at all, 20
The average value of the names was calculated, and an average value of 3.0 or more was evaluated as a composition having a refreshing feeling after washing the face.

(3) Tightening sensation on the skin after washing the face With 20 women as panelists, the face was washed with 5 ml of the composition, and the tingling sensation on the skin after rinsing was evaluated. If you feel that you do not have a tightness at all, 4 points, if you feel that you have little feeling of a tension, 3 points, if you feel that you have a slight tension, 2 points, and if you feel a strong tension, 1 point. ,
The average value of 20 persons was calculated, and an average value of 3.0 or more was evaluated as a composition having no tightness on the skin after washing the face.

[0029]

[Table 4]

Example 10 A hair shampoo composition was prepared according to the formulation shown in Table 5 and evaluated by the following methods. The results are shown in Table 5. When this hair shampoo composition was evaluated, it was found to be low in irritation, easy to pass through the fingers during use, good to pass through after use, and excellent in conditioning effect, foaming property, and stability over time. The hair shampoo composition was evaluated in Example 1 for skin irritation, foaming property and stability over time.
It is the same as the method of ~ 8, and the following methods were used for other items.

(1) Finger passing when washing hair With 20 women as panelists, finger passing when washing hair with 5 ml of the composition was evaluated. An average of 20 people, with 2 points if you feel that your fingers are smooth and your hair does not get caught, 1 point if you feel that your hair is slightly caught on your fingers, and 0 points if you feel that your fingering is very bad The value was determined, and an average value of 1.5 points or more was evaluated as a composition which is good for fingers to pass when washing hair.

(2) Combing after washing hair With 20 women as panelists, combing properties after washing and drying hair with 5 ml of the composition were evaluated. If the hair does not have a squeaky feeling and the comb passage is smooth, 2 points, if the hair feels a little caught on the comb, 1 point, and if the comb passage is very bad, 0 points. The average value of 20 persons was obtained, and an average value of 1.5 or more was evaluated as a composition having good combability after washing hair.

(3) Conditioning Effect After Washing Hair 20 women were used as panelists to evaluate the conditioning effect after washing and drying hair with 5 ml of the composition. 2 points if you feel that the conditioning effect is excellent, 1 point if you feel that the conditioning effect is obtained,
0 if you feel that the conditioning effect cannot be obtained
The average value of 20 persons was calculated as a point, and an average value of 1.5 points or more was evaluated as a composition having a good conditioning effect after washing hair.

[0034]

[Table 5]

Example 11 A body shampoo composition was prepared according to the formulation shown in Table 6 and evaluated by the following methods. The results are shown in Table 6. When this body shampoo composition was evaluated, it had low irritation, no slimy feeling during use, a sufficient refreshing feeling was obtained after use, no feeling of tightness on the skin, and foamability,
It was excellent in stability over time. The evaluation method of the body shampoo composition was the same as the method of Examples 1 to 8 with respect to skin irritation, foaming property and stability over time, and the other methods were as follows.

(1) Slickness during rinsing Twenty women were panelists, 5 ml of the composition was whipped on a bath sponge, the body was washed, and the slickness during rinsing was evaluated. 4 points if you feel no slimy feeling, 3 points if you feel little slimy feeling, 2 points if you feel a little slimy feeling, 1 point if you feel that slimy feeling is persistent , Average of 20 people
A composition of 3.0 or more was evaluated as a composition having no slimy feel.

(2) Refreshing sensation after rinsing Twenty women were panelists and 5 ml of the composition was whipped on a bath sponge to wash the body and the refreshing sensation after rinsing was evaluated. 4 when you feel that you have a refreshing feeling
The average value of 20 people was calculated with 3 points if you felt a little refreshing feeling, 2 points if you felt little refreshing feeling, and 1 point if you felt that there was no refreshing feeling at all. An average value of 3.0 or more was evaluated as a composition having a refreshing feeling after washing.

(3) Tightening of skin after rinsing Twenty women were panelists and 5 ml of the composition was whipped on a sponge for bathing to wash the body, and the sensation of tightness of the skin after rinsing was evaluated. 4 points if you feel no tightness, 3 points if you feel little tension, 2 points if you feel a little tension, 1 point if you feel a strong tension The average value of 20 persons was obtained, and an average value of 3.0 or more was evaluated as a composition having no taut feeling.

[0039]

[Table 6]

Example 12 A hand soap composition was prepared according to the formulation shown in Table 7 and evaluated by the methods described below. The results are shown in Table 7. When this hand soap composition was evaluated, it had low irritation, no slimy feeling during use, a sufficient refreshing feeling was obtained after use, no feeling of tightness on the skin, foamability, and excellent stability over time. It was The hand soap composition was evaluated in the same manner as in Example 1 for skin irritation, foaming, slimy feel during rinsing, refreshing feel after rinsing, and stability over time.
It is the same as the method of ~ 8, and the following methods were used for other items.

(1) Tightening sensation on skin after rinsing Twenty women were panelists, and 5 ml of the composition was used to wash fingers and forearms, and the sensation on skin tightness after rinsing was evaluated.
4 points if you feel no tightness, 3 points if you feel little tension, 2 points if you feel a little tension, 1 point if you feel a strong tension The average value of 20 persons was obtained, and an average value of 3.0 or more was evaluated as a composition having no taut feeling.

[0042]

[Table 7]

Example 13 A cleansing foam composition was prepared according to the formulation shown in Table 8 and evaluated by the following methods. The results are shown in Table 8
Shown in. Evaluation of this cleansing foam composition showed low irritation, no slimy feeling during use, sufficient moist feeling after use, and no tightness on the skin.
It was excellent in foamability and stability over time. The evaluation method of the cleansing foam composition was the same as the method of Examples 1 to 8 with respect to skin irritation, foaming property and stability over time, and the other methods were as follows.

(1) Slick feeling during rinsing Twenty women were panelists, each of which had their face wet with a foundation, and then washed with 5 g of the composition, and the slick feeling during rinsing was evaluated. 4 points if you feel no slimy feeling, 3 points if you feel little slimy feeling, 2 points if you feel a little slimy feeling, 1 point if you feel that slimy feeling is persistent The average value of 20 persons was calculated, and an average value of 3.0 or more was evaluated as a composition having no slimy feel.

(2) Moisture feeling after rinsing Twenty women were panelists, each had their face wet with a foundation, and then washed with 5 g of the composition, and the moist feeling after rinsing was evaluated. 4 points if you feel moist, 3 points if you feel a little moist,
The average value of 20 people was calculated with 2 points when it was felt that there was almost no moist feeling and 1 point when it was felt that there was no moist feeling at all, and an average value of 3.0 or more was a composition with a moist feeling after washing. evaluated.

(3) Tightening sensation after rinsing Twenty women were panelists, each of which had their foundations wet with a foundation and then washed with 5 g of the composition, and the sensation of tightness of the skin after rinsing was evaluated. 4 points if you feel no tightness, 3 points if you feel little tension, 2 points if you feel a little tension, 1 point if you feel a strong tension The average value of 20 persons was obtained, and an average value of 3.0 or more was evaluated as a composition having no taut feeling.

[0047]

[Table 8]

Example 14 A dishwashing detergent composition was prepared according to the formulation shown in Table 9 and evaluated by the following methods. The results are shown in Table 9. When this cleaning composition for tableware was evaluated, it had low irritation, excellent cleaning power, and excellent foamability and stability over time. In addition, the evaluation method of the dishwashing detergent composition is the skin irritation, the foaming property, and the stability with the passage of time in Examples 1 to 3 above.
It was the same as the method of No. 8 and the other method was as follows.

(1) Detergency According to the detergency evaluation method of JIS K 3370, a detergency test was carried out using a Linatu tester, and the results were compared with an index detergent solution for detergency evaluation and evaluated according to the following criteria. ◯: Good detergency (clearly superior) Δ: Normal detergency (almost no difference) ×: Poor detergency (obviously poor)

[0050]

EFFECT OF THE INVENTION Since the detergent composition of the present invention is hypoallergenic, and has excellent foamability, stability over time, and feeling in use, it is a hair shampoo composition, a body shampoo composition, and a dishwashing detergent composition. It can be used for etc.

[Table 9]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area C11D 1:75)

Claims (1)

[Claims] 1. The following (a) and (b) are contained, (a) +
(B) is 5 to 40% by weight, and the weight ratio of (a) and (b) is 1
The cleaning composition is 0/1 to 1/5. (A) Amide ether sulfate type anionic surfactant represented by the formula (1) (b) Amine oxide type surfactant represented by the formula (2) or (3) [Chemical 2] [Chemical 3]