JP2582626B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention significantly relieves irritation and damage to skin or hair, has excellent foaming and detergency, and has excellent rinsing properties and hands during use. The present invention relates to a low-irritant detergent composition having a good feel.

[Conventional technology and its problems]

With the increasing awareness of human safety, cleaners for clothes, kitchen cleaners, cleaners for homes, cleaners for hair, cleaners for humans, etc. that often touch the human skin Various attempts have been made to make the effect on the skin mild. For example, the pH of the composition
Is adjusted to 5-6 (weakly acidic) to bring it closer to the pH of human skin, so that its action is mild on the skin,
There is a tendency to use as low a stimulant as possible as the main cleaning base. As such a mild cleaning base,
Recently, amino acid-based surfactants and alkyl phosphate-based surfactants have appeared (Japanese Patent Publication No. 50-40125,
JP-B-51-426023, JP-B-55-9033, JP-B-58-27
319). However, although these surfactants have low irritation, they have drawbacks such as not being able to exert sufficient base foaming power and detergency alone, and having poor solubility.
In the case of kitchen cleaners, sodium alkylbenzenesulfonate has been widely used as a base having excellent cleaning performance. However, it has a strong degreasing power from the skin and has a disadvantage that hand roughness easily occurs. Was.

For this reason, kitchen cleaners using sodium alkylethoxysulfate, which is less irritating to the skin, as a main cleaning base, have recently become the mainstream. Furthermore, various properties have been further improved by using an auxiliary surfactant such as a tertiary amine oxide or a higher fatty acid diethanolamide, and at the same time, the action on the skin has been milder.

However, although the effects of various cleansing agents on the skin have been milder than in the past, they have not yet reached a sufficiently satisfactory level.

Alkyl glycosides, which are sugar derivative surfactants, on the other hand, are low-irritant surfactants and, despite being non-ionic surfactants, not only produce stable foams themselves, but also have other negative effects. It is known to act as a foam stabilizer for ionic surfactants, and has been receiving attention in recent years. For example, JP-A-58-104625 discloses a foaming surfactant composition containing an alkyl glycoside and an anionic surfactant, and JP-A 62-74999 discloses an alkyl glycoside and an anionic surfactant. A liquid detergent composition for dishwashing, which contains an activator and a fatty acid alkanolamide, is mild and has excellent foaming and detergency. However, although the performances of these compositions are superior to those of conventional polyoxyethylene alkyl ether-based detergents, they are still insufficient. In particular, it is inferior in rinsing properties and hand feeling after washing.

[Means for solving the problem]

The present inventors have conducted intensive studies to maximize the properties of alkyl glycosides. As a result, the combined use of polyalkylene oxide adducts of polyhydric alcohols further reduces the irritation to the skin, as well as the detergency and detergency. The present inventors have found that the foaming power is enhanced, and that the rinsing property and the feel of the hands are also improved.

That is, the present invention relates to the following components (a) and (b): (a) alkyl glycoside; (b) ethylene glycol, propylene glycol, neopentyl glycol, glycerin, polyglycerin, triglyceride having an average molecular weight of 300 to 4,000. A polyalkylene oxide adduct of a polyhydric alcohol selected from the group consisting of methylolpropane, pentaerythritol and sorbitol (provided that when the polyhydric alcohol is ethylene glycol, the alkylene oxide is propylene oxide); (A) The cleaning composition is characterized in that the weight ratio is in the range of 1/300 to 1/2.

In the present invention, the component (a) used as the main surfactant is represented by the following general formula (I).

R ₁ (OR ₂ ) _x G _y (I) (in the above formula, R ₁ represents a linear or branched alkyl group having 8 to 18 carbon atoms, an alkenyl group or an alkylphenyl group;
R ₂ represents an alkylene group having 2 to 4 carbon atoms;
Are residues derived from 還 元 6 reducing sugars, and x has an average value of 0０〜5. y has an average value of 1 to 10. ) X has an average value of 0 to 5;
Adjust the crystallinity. That is, the higher x is, the higher the water solubility tends to be and the lower the crystallinity. Preferred values of x are 0-2. Next, when y has an average greater than 1, that is, when y contains a surfactant represented by the general formula (I) having a sugar chain of two or more sugar chains as a hydrophilic group, the sugar chain binding mode is 1- 2, 1-3, 1-4, 1-6 bond, and further α
It is possible to include any mixture having-, [beta] -pyranoside, or furanoside linkages and their mixed modes of attachment. Further, y is 1 to 10, and a preferable average value is about 1.0 to 3.0. This is a preferable value in order to obtain a sufficient foaming effect with a smaller content of a polyalkylene adduct of a polyhydric alcohol which is a foaming agent described later. R ₁ is an alkyl group having 8 to 18 carbon atoms having a straight or branched chain, an alkenyl group or an alkylphenyl group,
From the viewpoint of solubility, foaming properties and detergency, the preferred carbon number is
10-14. R ₂ is an alkylene group having 2 to 4 carbon atoms, and a preferable value is 2 to 3 in view of water solubility and the like.
Further, the structure of G is determined by a raw material of monosaccharide or disaccharide or more. Examples of the raw material of G include monosaccharides such as glucose, galactose, xylose, mannose, lyxose, arabinose, and mixtures thereof. , 2
As sugar or more, maltose, xylobiose, isomaltose, cellobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose, melezitose and the like, and mixtures thereof, and the like can be mentioned. Among these, preferred monosaccharide raw materials are glucose and fructose in view of their availability and low cost, and maltose and sucrose for disaccharides or more.

The component (a) is usually incorporated in the composition in an amount of 1 to 60% by weight, preferably 10 to 40% by weight.

The component (b) in the composition of the present invention is a polyalkylene oxide adduct of a polyhydric alcohol. Examples of the polyhydric alcohol include dihydric alcohols such as ethylene glycol, propylene glycol, and neopentyl glycol.
Preferred are tri- or higher-valent alcohols such as glycerin, polyglycerin, trimethylolpropane, pentaerythritol and sorbitol. Among them, a polypropylene oxide adduct of ethylene glycol or glycerin is particularly desirable. These components (b) may be used alone or in combination of two or more. When the component (b) is incorporated into a detergent composition containing an alkyl glycoside, the irritation to the skin is further alleviated, the detergency and foaming power are enhanced, and the rinsing property and the hand feel during use are also improved. Is done.

In order to achieve these effects, it is necessary that the molecular weight of the polyalkylene oxide adduct of the polyhydric alcohol be in the range of 300 to 4,000, preferably 500 to 2,000. The effect of reducing irritation, the effect of enhancing detergency and foaming power is small, and the effect of improving rinsing properties and hand feeling during use is not exhibited.

Component (b) is incorporated in the composition in an amount of 0.1 to 10% by weight, preferably 1 to 5% by weight.

Further, in the cleaning composition of the present invention, (b) / (a) has a weight ratio of 1/300 to 1/2, preferably 1/200 to 2/5, particularly preferably 1/100 to 1/3. So that

In addition to the above-mentioned essential components, a known activator for a detergent can be appropriately added to the detergent composition of the present invention, if necessary, for the purpose of improving the detergency and foaming power. Examples of such an activator include polyoxyethylene (average addition number of moles: 4 to 20) alkyl (C _{7 to} C ₁₈ linear or branched) ether, and C _{3 to} C ₂₂ higher fatty acid mono- or dialkanol (C ₂ -C ₃₎ amide, a tertiary alkyl (C ₈ -C ₁₈
Non-linear surfactants such as amine oxides; α-olefin (C ₈ -C ₂₀ ) sulfonate [N
a, K, Mg, triethanolamine (TEA), NH ₄ ], polyoxyethylene (average addition number of 2 to 8) alkyl (C _{8 to} C ₁₈ linear or branched) sulfate salt (Na, K, M
g, triethanolamine, NH ₄ ), α-sulfo fatty acid ester salt R ₂ ; C _{8 to} C ₁₈ , R ₆ ; C _{1 to} C ₄ , M; alkali metal), N-acyl (C _{8 to} C ₁₈ ) glutamate (Na, K, TEA), monoalkyl (C ₈ to C ₁₈ ) C ₁₈₎ phosphate (Na, K, TEA, arginine), anionic surfactant such as linear alkyl (C ₁₀ -C ₁₈₎ benzenesulfonate (Na, K, Mg); alkyl betaines, alkyl sulfobetaines And the like.

The pH range of the stock solution of the cleaning composition of the present invention is preferably from 4 to 10, and particularly preferably from 5 to 8.

Further, other optional components can be added to the cleaning composition of the present invention as long as the separation stability, cleaning performance and foaming performance of the composition are not impaired. For example, lower aliphatic alcohols such as ethyl alcohol, solubilizers such as sodium and potassium salts of toluenesulfonic acid and xylenesulfonic acid and urea, viscosity modifiers such as clay minerals and water-soluble polymer substances, calcite, silica stone Water-insoluble abrasives such as calcium phosphate, zeolite, polyethylene, nylon, and polystyrene; humectants such as glycerin and sorbitol; feel-improving agents such as cationized cellulose; and other enzymes, fragrances, pigments, antiseptic / antifungal agents, etc. be able to.

〔The invention's effect〕

The cleaning composition of the present invention has excellent detergency and rich foaming power, has a mild effect on the skin or hair, has little hand roughness, and has excellent rinsing properties and excellent hand feel during use. It is a low-irritant detergent composition of high value.

〔Example〕

Next, the present invention will be described in more detail with reference to examples.
The present invention is not limited to these examples.

<Test Method and Evaluation Criteria> (1) Foaming Power Test The foaming power when 0.1% of a commercially available butter as a soil component is added to a detergent solution having a detergent concentration of 0.5% is measured. The measuring method is as follows. 40 ml of the above detergent solution containing butter is placed in a glass cylinder having a diameter of 5 cm, and the mixture is rotated and stirred for 10 minutes, and the foam height immediately after the stop is measured.

(2) Detergency test 0.1% of Sudan III (red dye) was added to beef tallow as an indicator, and 2.5 g of this was applied to a porcelain dish (25 cm in diameter). 3 g of detergent, water (water for use; hardness: 3.5 ゜ DH) Rub-wash at 20 ° C. using a sponge impregnated with 27 g of water) and indicate the number of washed dishes until no tallow can be removed from the dishes anymore.

(3) Rinse properties The sample solution 3 having a concentration of 0.25% in a 30 cm diameter and 12 cm height bucket is rotationally stirred for 10 minutes, and the cock attached to the bottom of the whipping bucket is opened to discharge only the liquid. Next, tap water 3 is added, and the mixture is similarly rotated and stirred for 10 minutes and drained. This operation is repeated by changing tap water until no bubbles are observed in the bat, and the number of tap water changes is evaluated.

(4) Hand feel during and after use Prepare two types of detergents A and B, each with 4
Prepare a 10% by weight detergent solution at 0 ° C. The feels of the aqueous solutions of the detergents A and B are compared by a sensory test as follows.

Feel of the liquid Immerse the left and right hands separately in the aqueous solution of detergent A and B up to the wrist.
The feel of the liquid after one minute of immersion is adopted based on the following evaluation points based on the detergent A.

Feeling after use After sufficient rinsing, the hand feeling after wiping hands with a dry towel is scored based on the following evaluation points based on detergent A.

The above test is performed on 10 subjects, and the feeling of use of the detergent B is evaluated based on the sum of the scores obtained for each item.

(5) Hand roughness test A detergent solution of 5% by weight of the detergent composition was prepared, and the solution temperature was adjusted to 30%.
Keep at ℃, immerse your hands for 20 minutes per minute, then wash well with water.
This operation is repeated for three days. Change the hand condition of 5 subjects to 4
After one day, the results were visually judged according to the following criteria, and indicated by an average score. The evaluation criteria at this time are as follows.

In this test, it is desirable that the average score is 4 or more.

5 points: Hand roughness is hardly recognized. 4 points: Hand roughness is slightly recognized.

3 points: Hand roughness is slightly recognized 2 points: Hand roughness is not recognized 1 point: Hand roughness is significantly recognized Example 1 A composition shown in Table 1 below was prepared, and detergency was evaluated by the above evaluation method. The foaming power, the rinsing property, the hand feel during and after use, and the hand roughness were evaluated. Table 1 shows the results
Shown in

The comparative detergent used for the test of hand feeling at the time of use and after use was detergent A (9 in Table 1), and this was compared with detergent B.
A comparative test was performed on (1 to 8 in Table 1).

Example 2 Shampoo (for hair or body): (% by weight) Alkyl glycoside 20 General formula (I) PPG2000 (diol type) 2 coconut oil fatty acid diethanolamide 0.5 Ethanol 3 Perfume trace water Balance 100 (pH adjusted to 7.0) Example 3 for bathroom cleaners: (wt%) alkylglycoside 5 general formula (I) PO adduct of pentaerythritol (molecular weight 2000) 3 Citric acid 4 Perfume, dye trace water Balance 100 (pH adjusted to 5.0) Example 4 Liquid Cleanser: (wt%) alkylglycoside 4 formula (I) EO adduct of trimethylolpropane (molecular weight 3000) 3 abrasive (silica) 40 fragrances, antimicrobials trace water Balance 100 (pH adjusted to 7.5)

Claims (3)

(57) [Claims] 1. The following components (a) and (b): (a) alkyl glycide; (b) ethylene glycol, propylene glycol, neopentyl glycol, glycerin, polyglycerin, triglyceride having an average molecular weight of 300 to 4,000. A polyalkylene oxide adduct of a polyhydric alcohol selected from the group consisting of methylolpropane, pentaerythritol and sorbitol (provided that when the polyhydric alcohol is ethylene glycol, the alkylene oxide is propylene oxide); (A) The cleaning composition characterized in that the weight ratio is in the range of 1/300 to 1/2. 2. Component (a) having the following general formula (I) R ₁ (OR ₂ ) _x G _y (I) (wherein R ₁ is a linear or branched alkyl having 8 to 18 carbon atoms) Group, represents an alkenyl group or an alkylphenyl group,
R ₂ represents an alkylene group having 2 to 4 carbon atoms;
Are residues derived from 還 元 6 reducing sugars, and x has an average value of 0０〜5. The cleaning composition according to claim 1, wherein y is an alkyl glycoside represented by the following formula: 3. The component (b) is a polypropylene oxide adduct of ethylene glycol or glycerin.
The cleaning composition according to the above.