JPH10176184A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent which hardly irritates or damages the skin or hair, is excellent in foaming power and detergency, and provides a good feeling during rinsing or washing by compounding a selected alkylglycoside, an anionic surfactant, a succinic acid deriv., a polyalkylene oxide adduct to a polyhydric alcohol in a specified ratio. SOLUTION: An alkylglycoside represented by formula I (wherein R<1> is an 8-18C alkyl, alkenyl, or alkylphenyl; R<2> is an alkylene; G is a residue derived from a 5-6C reducing sugar; and the average value of (x) is 0-5 and that of (y) is 1.0-1.42) (A), an anionic surfactant (B), succinic acid deriv. represented by formula II (wherein R<3> is a 10-14C alkyl; and X and Y are each H, an alkali metal, ammonium, etc.) (C), and a polyalkylene oxide adduct to a polhyhnydric alcohol having an average mol.wt. of 300-4,000 (D) are compounded in an amt. of the sum of A and B of 20-60wt.% and in wt. ratios of A/B, C/D, and (C+D)/(A+B) of 0.05-10, 0.1-10, and 0.05-0.5, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cleaning composition. More specifically, the present invention relates to a detergent composition which has a remarkably reduced irritation and damage to skin and hair, has excellent foaming and detergency, and has good rinsing properties and good hand feel during use.

[0002]

2. Description of the Related Art Today, the awareness of safety for the human body is increasing more and more. Today, clothes detergents, kitchen detergents, house detergents, hair detergents and body detergents are used. For cleaning agents that often come into contact with human skin such as, for example, various attempts have been made to milden the effect on the skin, for example, by adjusting the pH of the composition to 5 to 5.
Adjust to 6 (weakly acidic), approach the pH of human skin, make its action mild on the skin, and use the least irritating thing as the main cleaning base. Have been. Amino acid-based surfactants and alkyl phosphate-based surfactants and the like are used as such a mild detergent base (Japanese Patent Publication Nos. 50-40125 and 51-4260).
No. 23, JP-B-55-9033, JP-B-58-27319). However, although these surfactants are mild,
It has drawbacks such as not being able to exert sufficient foaming power and detergency by itself and poor solubility. In the case of kitchen cleaners, sodium alkylbenzenesulfonate has been widely used as a base having excellent cleaning performance, but has the disadvantage that it has a strong degreasing power from the skin and is likely to be rough. ing.

[0003] For this reason, recently, kitchen cleaners using sodium alkylethoxysulfate, which is less irritating to the skin, as a main cleaning base have become 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.

[0004] However, although the effects of various cleansing agents on the skin are milder than in the past, at present, they have not yet reached a satisfactory level.

On the other hand, alkyl glycosides, which are sugar derivative surfactants, are low-irritant surfactants and, despite being nonionic surfactants, not only produce stable foams themselves, It is known to act as a foam stabilizer for other anionic surfactants, and has recently been receiving attention. 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. Hypoallergenic and foaming power containing an activator and a fatty acid alkanolamide,
A liquid detergent composition for hand washing dishes having excellent detergency is described. However, although the performances of these detergent compositions are superior to those of conventional detergents based on polyoxyethylene alkyl ether, they are still insufficient, and are particularly inferior in rinsing properties and hand feeling after washing. Have a problem.

Further, it is desirable to make the system as dense as possible in order to make the liquid detergent composition compact.
When the liquid detergent composition containing the alkyl glycoside is concentrated, the liquid detergent composition gels, so that it has been difficult to put it into practical use.

[0007]

DISCLOSURE OF THE INVENTION The present inventors have remarkably relieved irritation and damage to skin and hair, and have excellent foaming and detergency, as well as rinsing properties and hand feel during use. As a result of diligent research to obtain a good liquid detergent composition, the alkylglycoside, anionic surfactant, succinic acid derivative and polyoxyalkylene oxide adduct of polyhydric alcohol are blended in a specific ratio, respectively. The present inventors have found that a desired liquid detergent composition can be obtained, and have completed the present invention.

That is, the present invention provides the following components (a) to (d)
(A) + (b) = 20-60% by weight, (a) / (b) = 0.05-10
(Weight ratio), (c) / (d) = 0.1-10 (weight ratio), [(c)
+ (D)] / [(a) + (b)] = 0.05 to 0.5 (weight ratio). (a) an alkyl glycoside represented by the following general formula (I): R ¹ (OR ² ) _x G _y (I) (wherein, R ¹ is a linear or branched alkyl group having 8 to 18 carbon atoms or Represents an alkenyl group or an alkylphenyl group having a total of 8 to 20 carbon atoms, R ² represents an alkylene group having 2 to 4 carbon atoms, and G represents a residue derived from a reducing sugar having 5 to 6 carbon atoms,
x represents a number whose average value is 0 to 5, and y represents a number whose average value is 1.0 to 1.42. (B) anionic surfactant (c) succinic acid derivative represented by the following general formula (II)

[0009]

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(Wherein, R ³ represents an alkyl group having 10 to 14 carbon atoms, and X and Y each represent a hydrogen atom, an alkyl metal, ammonium or alkanolamine.) (D) Many having an average molecular weight of 300 to 4000. Each component used in the present invention will be described below.

The alkyl glycoside of the component (a) used in the present invention is represented by the above general formula (1). Where:
The carbon number of R ¹ is 10 from the viewpoint of solubility, foamability, detergency, etc.
~ 14 is preferred. The carbon number of R ² is preferably 2 to 3 from the viewpoint of solubility in water and the like.

The structure of G is determined depending on whether the raw material used is a monosaccharide or disaccharide or more. Specific examples of the raw materials are given below. Monosaccharides include glucose, galactose, xylose, mannose, lyxose, arabinose, and the like, and mixtures thereof.Examples of disaccharides and higher include maltose, xylobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, and gentianose. And melezitose and the like and mixtures thereof. Of these, preferred monosaccharides include glucose and fructose from the viewpoint of their availability, and those having two or more sugars include maltose and sucrose.

The value of x is an index indicating the relationship between the water solubility and the crystallinity of the alkyl glycoside. That is, the larger x is, the better the water solubility is, and therefore the lower the crystallinity,
As x becomes smaller, the water solubility decreases, and thus the crystallinity improves. x preferably has an average value of 0 to 2.

When the average value of y is greater than 1, that is, when the alkyl glycoside (1) has two or more sugar chains as a hydrophilic group, the sugar chain binding mode is 1-2, 1-3, 1
It may be a -4, 1-6 bond, an α-, β-pyranoside or furanoside bond, or a mixture thereof. In the present invention, the measurement of the y value is based on the proton N
By MR.

As the anionic surfactant of the component (b) used in the present invention, any one may be used as long as it has good compatibility with the component (a) and is economical. Not something. Preferred examples of the component (b) are shown below.

(1) Polyoxyalkylene alkyl ether sulfate or alkyl sulfate represented by the general formula (III) R ⁴ (R ² O) _m SO ₃ M (III) (wherein R ⁴ has 10 carbon atoms) Represents an alkyl group or an alkenyl group of 1818, R ² is the same as in the general formula (I), m is a number of 0 to 7, and M is an alkali metal, alkaline earth metal, ammonium or alkanolamine. (2) Alkylbenzene sulfonate represented by the general formula (IV)

[0017]

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[In the formula, R ⁵ represents an alkyl group or an alkenyl group having 8 to 18 carbon atoms, and M is the same as in the general formula (III). (3) α-sulfofatty acid ester salt represented by the general formula (V)

[0019]

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[In the formula, R ⁶ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms, R ⁷ represents an alkyl group having 1 to 3 carbon atoms, and M is the same as in the general formula (III). (4) Examples of the salts of α-olefin sulfonates having 10 to 18 carbon atoms include alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts and the like.

(5) Alkanesulfonic acid salts having 10 to 18 carbon atoms include alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts and the like.

These anionic surfactants are used alone,
Alternatively, two or more kinds can be used as a mixture.

The component (b) is present in the detergent composition of the present invention in an amount of from 1 to 40.
It is preferable to mix it by weight% or more. Particularly preferred range of the amount of the component (b) is 5 to 20% by weight.

In the present invention, as the component (c), the above general formula (I)
The succinic acid derivative represented by I) is blended at a specific ratio. This improves the rinsability of the concentrated liquid detergent composition containing the alkyl glycoside and the anionic surfactant. Succinic acid derivatives are disclosed in JP-A-55-142099, JP-A-50-142603, JP-A-58-196299, JP-A-58-196296, JP-A-2-113100 and the like. , Liquid detergent compositions. However, as in the present invention, rinsing properties are improved by blending a succinic acid derivative at a specific ratio in a combined system using the (a) component alkyl glycoside and the (b) component anionic surfactant. It was not known at all.

The component (d) in the composition of the present invention is a polyoxyalkylene oxide adduct of a polyhydric alcohol having an average molecular weight of 300 to 4,000.

The polyhydric alcohol used as the raw material of the component (d) includes dihydric alcohols such as ethylene glycol, propylene glycol and neopentyl glycol; trihydric or higher such as glycerin, polyglycerin, trimethylolpropane, pentaerythritol and sorbitol. Are preferred. Among them, a polypropylene oxide adduct of ethylene glycol or glycerin is particularly desirable. When the polyhydric alcohol is ethylene glycol, the alkylene oxide is preferably propylene oxide. These components (d) may be used alone or in combination of two or more.

By blending the component (d) in a specific ratio, the properties of the liquid detergent composition containing the alkyl glycoside / anionic surfactant / succinic acid derivative, that is, low-temperature stability, foamability, and rinsing can be obtained. It is possible to solve the problem of the gelation of the concentrated system without impairing the properties and the prevention of roughening.

In order to achieve these effects, the average molecular weight of the polyalkylene oxide adduct of the polyhydric alcohol is 3
It is necessary to be within the range of 00 to 4000, preferably 500 to 2000, and if it is out of this range, a sufficient gelation preventing effect is not exhibited.

The liquid detergent composition of the present invention comprises the above components
(a) to (d) are converted into (a) + (b) = 20 to 60% by weight, and (a) / (b)
= 0.05-10 (weight ratio), (c) / (d) = 0.1-10 (weight ratio), [(c) + (d)] / [(a) + (b)] = 0.05-0.5
(Weight ratio). If the ratio of each component is not within these ranges, the cleaning composition has low irritation and damage to skin and hair, excellent foaming power and detergency, good rinsing properties and good hand feeling during use. Cannot be obtained, and a sufficient rinsing property improving effect and a gelling preventing effect cannot be obtained.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The liquid detergent composition of the present invention comprises:
In addition to the above essential components, non-ionic surfactants other than the component (a) such as polyoxyethylene (average addition number of 4 to 20) alkyl (C _{7 to} C ₁₈ linear or branched) ether are also used. For the purpose of improving the detergency and the foaming power, they can be appropriately added and blended. 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 liquid detergent composition of the present invention comprises the above (a) to
It contains the essential component (d) and optional components, if necessary, and usually contains a balanced amount of water. The pH range of the stock solution of the liquid detergent composition of the present invention is preferably from 4 to 10, and especially the pH range.
5 to 8 are preferred.

[0032]

The liquid detergent composition of the present invention, despite being a thick liquid composition, has excellent low-temperature stability, hardly causes solidification (gelling) of the solution, has excellent foaming properties, and has excellent foaming properties (rinse). Sex) is quick and mild on the skin.

[0033]

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

Example 1 Each liquid detergent composition having the composition shown in Table 1 was prepared and subjected to the following tests. Table 1 shows the results.

(1) Rinsing test 3 liters of a 0.25% concentration sample solution placed in a vat 30 cm in diameter and 12 cm in height was rotationally stirred for 10 minutes, and a cock attached to the bottom of the whipping vat was opened to remove only the liquid. Let it drain.
Next, 3 liters of tap water is added, and the mixture is similarly rotated and stirred for 10 minutes and drained. The operation is repeated by changing tap water until no bubbles are observed in the vat, and the number of times tap water is replaced is evaluated.

(2) Test for ability to prevent gelation (ability to prevent film formation) 50 g of each composition was placed in a 100 ml beaker, and the mixture was allowed to stand at 20 ° C.
It was left standing in a constant temperature / humidity room with a humidity of 40% for 3 days, and the state after the standing was evaluated by the following criteria. ：: no change Δ: thin film formation ×: complete film formation

(3) Hand Roughness Test A detergent solution having a detergent composition concentration of 5% was prepared, and the solution temperature was adjusted to 30 ° C.
Keep your hands immersed in your hands for 20 minutes every day, then wash well with water. This operation is repeated for three days. Four days later, the state of the hands of the five subjects was visually determined according to the following criteria, and indicated by an average score. 5 points: Hand roughness is not recognized. 4 points: Hand roughness is slightly observed. 3 points: Hand roughening is slightly observed. 2 points: Hand roughness is considerably recognized. 1 point: Hand roughness is remarkably recognized. The average score is desirably 4 or more.

(4) Low-temperature stability The composition is filled in a 100-ml glass bottle and placed in a constant temperature room at -5 ° C.
The appearance after storage for 10 days was determined according to the following criteria. ○: No change in appearance △: With cloudiness ×: Separation or precipitation

[0039]

[Table 1]

Claims (2)

[Claims] 1. The following components (a) to (d) are converted to (a) + (b) = 20
-60% by weight, (a) / (b) = 0.05-10 (weight ratio), (c) /
(d) = 0.1 to 10 (weight ratio), [(c) + (d)] / [(a) +
(b)] = 0.05 to 0.5 (weight ratio). (a) an alkyl glycoside represented by the following general formula (I): R ¹ (OR ² ) _x G _y (I) (wherein, R ¹ is a linear or branched alkyl group having 8 to 18 carbon atoms or Represents an alkenyl group or an alkylphenyl group having a total of 8 to 20 carbon atoms, R ² represents an alkylene group having 2 to 4 carbon atoms, and G represents a residue derived from a reducing sugar having 5 to 6 carbon atoms,
x represents a number whose average value is 0 to 5, and y represents a number whose average value is 1.0 to 1.42. (B) anionic surfactant (c) succinic acid derivative represented by the following general formula (II) (Wherein, R ³ represents an alkyl group having 10 to 14 carbon atoms, X and
Y represents a hydrogen atom, an alkyl metal, ammonium or alkanolamine. (D) Polyalkylene oxide adduct of polyhydric alcohol having an average molecular weight of 300 to 4000 2. The composition according to claim 1, wherein the component (d) is a polypropylene oxide adduct of ethylene glycol or glycerin.
A liquid detergent composition according to the above.