JP2000017297A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a liq. detergent compsn. excellent in mildness, bubbling power, detergency, and low-temp. stability by compounding an alylglycoside, a fatty acid salt, an amine oxide, and a compd. selected from among arylsulfonic acids (salts) and arylcarboxilic acids (salts) in a specified wt. ratio. SOLUTION: This comsn. contains (A) 1-40 wt.% glycoside of formula I, (B) 0.1-20 wt.% 8-18C satd. or unsatd. fatty acid salt, (C) 0.1-20 wt.% amine oxide of formula II, and (D) 0.1-10 wt.% compd. selected from among 7-17C arylsulfonic acids (salts), etc., in a wt. ratio of B/C of (9/1)-(1/9), in a wt. ratio of B/D of (8/1)-(1/10), and in a concn. of (A+B+C) of 10-50 wt.%. In the formulas, R1 and R4 are each 8-18C alkyl, alkenyl, or alkylphenyl; R2 is 2-4C alkylene; G is a residue derived from a 5-6C reducing sugar; the average of (x) is 0-5; the average of (y) is 1.0-1.42; and R5 and R6 are each 1-3C alkyl or an alkanol group.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a liquid detergent composition excellent in mildness, foaming power, detergency and stability at low temperature.

[0002]

BACKGROUND OF THE INVENTION Alkyl glycosides, which are sugar derivative surfactants, are stable by themselves despite being mild surfactants and nonionic surfactants. It is known to generate foam and act as a foam stabilizer against other anionic surfactants (JP-A-58-104625 and JP-A-62-74999).
issue). However, the alkylglycoside is still insufficient in detergency and foaming power in the presence of oil stains.

In addition, when a fatty acid salt is added to a liquid detergent composition, the stability, particularly the low temperature stability, is remarkably lowered in the neutral region, making it difficult to take advantage of the characteristics of fatty acids. On the other hand, the stability of the fatty acid salt can be improved by adjusting the pH to the alkaline side (pH 8 to 9), but the detergent composition for tableware is likely to cause rough hands because the cleaning liquid directly touches the hand. Therefore, the use of fatty acids in the neutral region is desired.

From these things, there is a demand for a detergent composition which is mild to the skin and does not cause rough hands, and is excellent in foaming power and detergency.

[0005]

[In the formula, R ¹ represents a linear or branched alkyl, alkenyl or alkylphenyl group having 8 to 18 carbon atoms, R ² represents an alkylene group having 2 to 4 carbon atoms, and G represents 5 to 6 carbon atoms. A residue derived from a reducing sugar is shown, x is a number whose average value is 0 to 5, and y is a number whose average value is 1.0 to 1.42. ]

(b) 0.1 to 20% by weight of a linear or branched, saturated or unsaturated fatty acid salt having 8 to 18 carbon atoms (c) amine oxide 0.1 represented by the following general formula (2)
~ 20% by weight

[0006]

[Chemical 2]

[In the formula, R ⁴ represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, and R ⁵ and R ⁶ represent an alkyl group or alkanol group having 1 to 3 carbon atoms. (D) 0.1 to 10% by weight of one or more compounds selected from arylsulfonic acid having 7 to 17 carbon atoms (salt), arylcarboxylic acid having 7 to 17 carbon atoms (salt) and esters thereof, b)/(c) weight ratio is 9/1 to 1/9, (b)
The weight ratio of /(d) is 8/1 to 1/10, (a)+(b)+(c) is
There is provided a liquid detergent composition which is 10 to 50% by weight.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The component (a) of the present invention has the general formula
(1) is an alkyl glucoside represented by the formula (1) R ¹
Is a linear or branched alkyl, alkenyl or alkylphenyl group having 8 to 18 carbon atoms, preferably 10 to 14 carbon atoms in view of solubility, foaming property and detergency. R ² is an alkylene group having 2 to 4 carbon atoms, but an alkylene group having 2 to 3 carbon atoms is preferable from the viewpoint of solubility in water and the like. Further, the structure of G is determined by the raw material of monosaccharide or disaccharide or more. Examples of the raw material of G include glucose, galactose, xylose, mannose, lyxose, arabinose and the like, and a mixture thereof. Examples of disaccharides or more include maltose, xylobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose and the like, and mixtures thereof. Among these, preferable monosaccharide raw materials are glucose and fructose from the viewpoint of availability and cost, and maltose and sucrose when they are two or more sugars.

X is a number whose average value is 0 to 5, and this value controls the water solubility and crystallinity of the alkyl glycoside. That is, the higher the x, the higher the water solubility and the lower the crystallinity. Preferably the value of x is 0-2. Further, y is a number whose average value is 1.0 to 1.42. When the average value of y is greater than 1, that is, when a surfactant represented by the general formula (1) having a sugar chain of two or more sugars as a hydrophilic group is contained, the sugar chain bonding mode is 1- 2,
It is possible to include 1-3, 1-4, 1-6 linkages as well as α-, β-pyranoside or furanoside linkages and any mixtures thereof with mixed binding modalities. In the present invention, the method of measuring y is based on the proton NMR method.

The component (a), an alkyl glycoside, may be used alone or in combination of two or more.
40% by weight, preferably 5 to 20% by weight. If the blending amount is less than 1% by weight, the basic performance such as excellent foaming power and detergency cannot be satisfied, and if the blending amount exceeds 40% by weight, the composition remarkably thickens and is filled with the composition. Another problem is that it is difficult to remove from the container.

In the present invention, the component (b) has 8 to 18 carbon atoms.
Linear or branched saturated or unsaturated fatty acid salt of 0.1 to 20
% By weight is compounded. The fatty acid salt may be used alone, but it is preferable to use two or more kinds in combination. Particularly, saturated fatty acids having 12 to 18 carbon atoms are preferable. As the counterion of the component (b), alkali metals such as sodium and potassium, calcium,
Alkaline earth metals such as magnesium, ammonium,
Examples thereof include organic ammonium such as monoethanol ammonium, diethanol ammonium and triethanol ammonium.

The amine oxide used as the component (c) in the composition of the present invention is represented by the above general formula (2), and is contained in the composition in an amount of 0.1 to 20% by weight, preferably 0.5 to 20% by weight.
~ 10 wt% is compounded. From the viewpoints of detergency and low-temperature stability, R ⁴ in the general formula (2) is preferably an alkyl group or alkenyl group having 10 to 16 carbon atoms, and more preferably an alkyl group having 12 to 14 carbon atoms. R ⁵ and R ⁶ may be the same or different from each other, but it is particularly preferable that both R ⁵ and R ⁶ are methyl groups.

In the composition of the present invention, as component (d), an aryl sulfonic acid (salt) having 7 to 15 carbon atoms and 7 to 15 carbon atoms are contained.
The arylcarboxylic acid (salt) and the one or more compounds selected from these esters are blended. Such compounds include p-toluene sulfonic acid, cumene sulfonic acid,
Metaxylene sulfonic acid, benzoic acid, phthalic acid, isophthalic acid and salts thereof, and one selected from methyl p-oxybenzoate, ethyl p-oxybenzoate, propyl p-oxybenzoate and isopropyl p-oxybenzoate. The above is preferable. Examples of these counterions include alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium, ammonium and alkanolamines such as monoethanolamine, diethanolamine and triethanolamine. In the present invention, p-toluenesulfonic acid, benzoic acid and salts thereof are particularly preferably used as the component (d) from the viewpoint of the effect of improving low temperature stability.

The liquid detergent composition of the present invention comprises (b)/(c)
The weight ratio of 9/1 to 1/9, the weight ratio of (b)/(d) is 8/
1 to 1/10, and (a)+(b)+(c) is 10 to 50% by weight.
Within these ranges, good mildness (mild and does not cause rough skin), foaming power, detergency and low temperature stability can be obtained.

The pH of the composition of the present invention is preferably 6-8. If the pH exceeds 8, hand roughness may occur, and if it is lower than 6, fatty acids may be precipitated, which significantly deteriorates stability at low temperatures.

In the liquid detergent composition of the present invention, in addition to the above-mentioned essential components, various components can be blended, if necessary, within a range that does not impair the intended performance. For example,
Examples of the surfactant include polyoxyethylene alkyl ether sulfates other than the components (a) to (c), linear alkylbenzene sulfonates, α-sulfo fatty acid ester salts, α-olefin sulfonates, alkane sulfonates, etc. And anionic surfactants such as polyoxyethylene alkyl ethers, and nitrogen-containing nonionic or amphoteric surfactants such as fatty acid alkanolamides, alkylbetaines and alkylsulfobetaines. Examples of the solubilizer include lower alcohols such as ethanol and isopropanol, and polyhydric alcohols such as ethylene glycol, propylene glycol, glycerin and sorbitol. Further, fragrances, pigments, antiseptic/antifungal agents, thickeners and the like can be added as desired.
In addition, in the liquid detergent composition of the present invention, water is blended together with the above components. The amount of water is adjusted so that the total amount is 100% by weight.

The liquid detergent composition of the present invention can be applied to various cleaning applications, but is particularly preferable as a detergent composition for hard bodies. Here, the "hard body" means a material that retains a certain shape regardless of whether it is planar or three-dimensional, and if it can be washed, it is hard. The degree of salmon is not limited.
As this hard body, in addition to fixed objects such as floors, stairs and walls made of plastic, rubber, metal, tile, brick, concrete, cement, glass, wood, etc., various instruments, tools, tools, furniture, etc. made of them. It can include all things that people touch such as tableware. In particular, the composition of the present invention is excellent in mildness, foaming power, detergency and low-temperature stability, and is therefore suitable as a detergent composition for tableware.

[0018]

EXAMPLES Example 1 Each cleaning composition having the composition shown in Table 1 was prepared and the following tests were conducted. The results are shown in Table 1. The fatty acid composition of component (b) is shown in Table 2.

(I) Oil stain detergency test: According to the Leenut test method (JIS K 3370). The detergent composition concentration was 1% by weight, the detergent temperature was 25° C., and the model soil was beef tallow/rapeseed oil=9/1.

(Ii) Foaming test Detergent composition solution (detergent composition concentration 0.5% by weight; 3.5
° DH hard water is used), and commercially available butter is used as a dirt component.
Using the test solution added so as to be 0.1% by weight, the foaming amount was measured by the following method to evaluate the foaming property. Regarding the amount of foaming, 40 ml of the test solution was placed in a glass cylinder having a diameter of 5 cm, and the mixture was rotatively stirred at 20° C. for 15 minutes, and the height (mm) of the foam immediately after stopping was measured.

(Iii) Skin Irritation Test A detergent composition solution (detergent composition concentration 5% by weight; using tap water) was kept at 30° C. for 20 minutes, soaked in hands, and then thoroughly washed with tap water. This operation was performed once a day and was repeated for a total of 3 days. After 4 days, the rough condition of the hands of 5 subjects was visually observed, and the skin irritation was evaluated according to the following criteria. The result is 5
It is shown from the average score of people. If the average score is 4 or more, it is considered to be practically satisfactory in normal use. 5: Rough hands (irritating to the skin) are hardly recognized. 4; Rough hands (irritating to skin) are slightly observed. 3; Rough hands (irritating to skin) are slightly observed. 2; Rough hands (irritating to the skin) are considerably observed. 1; Rough hands (irritating to skin) are remarkably observed.

(Iv) Low temperature stability The composition was filled in a 100 ml glass bottle and placed in a thermostatic chamber at -5°C.
The appearance after storage for 10 days was judged according to the following criteria. ○: No change in appearance ×: Separation or precipitation

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

According to the present invention, mildness, foaming power,
A liquid detergent composition having excellent detergency and low-temperature stability can be obtained.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazutoshi Ide 1334 Minato Minato, Wakayama Prefecture Wakayama Pref. F-Term (Research) 4H003 AB03 AC05 AC10 AC15 AC16 BA12 DA05 DA09 DA12 DA17 EB07 EB22 ED02 ED28 FA02 FA18 FA35

Claims (3)

[Claims] (A) Alkyl glycoside represented by the following general formula (1): 1-40% by weight R ¹ (OR ² ) _x G _y (1) [wherein R ¹ has 8 to 18 carbon atoms] Represents a linear or branched alkyl, alkenyl or alkylphenyl group, R ² represents an alkylene group having 2 to 4 carbon atoms, G represents a residue derived from a reducing sugar having 5 to 6 carbon atoms, and x represents The average value is 0 to 5, and y is the average value 1.0 to 1.42. ] (B) 0.1 to 20% by weight of a straight or branched, saturated or unsaturated fatty acid salt having 8 to 18 carbon atoms (c) amine oxide 0.1 represented by the following general formula (2)
~ 20% by weight [Chemical formula 1] [In the formula, R ⁴ represents a linear or branched alkyl group or alkenyl group having 8 to 18 carbon atoms, and R ⁵ and R ^{6 each} have 1 to 3 carbon atoms.
Represents an alkyl group or an alkanol group. (D) 0.1 to 10% by weight of one or more compounds selected from arylsulfonic acid having 7 to 17 carbon atoms (salt), arylcarboxylic acid having 7 to 17 carbon atoms (salt) and esters thereof, b)/(c) weight ratio is 9/1 to 1/9, (b)
The weight ratio of /(d) is 8/1 to 1/10, (a)+(b)+(c) is
A liquid detergent composition which is 10 to 50% by weight. 2. The liquid detergent composition according to claim 1, which is a dishwashing detergent composition. 3. The liquid detergent composition according to claim 1, which has a pH of 6-8.