JP3227045B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a liquid detergent composition, and more particularly, to a liquid detergent composition having significantly reduced irritation and damage to the skin.
The present invention also relates to a liquid detergent composition which is excellent in foaming power and usability, and has good foam rinsing properties after washing.

[0002]

2. Description of the Related Art Today, safety consciousness for the human body is increasing more and more, so that laundry detergent, kitchen detergent, house detergent, hair detergent, etc.
Various attempts have been made to reduce the effect on the skin of detergents that frequently come into contact with human skin, such as detergents for the body and the like.
~ 6 (weakly acidic), close to the pH of human skin,
Methods are used to make the action mild on the skin, and to use as little as possible the irritation as the main cleaning base.

[0003] As such a mild cleaning base,
Amino acid type surfactants and alkyl phosphate type surfactants are used (Japanese Patent Publication No. 50-40125, Japanese Patent Publication No. 51-426023, Japanese Patent Publication No. 55-9).
033, Japanese Patent Publication No. 58-27319, etc.). However, although these surfactants have low irritation, they have drawbacks such as not being able to exert sufficient foaming power and detergency alone, and having poor solubility. In kitchen cleaners, sodium alkylbenzenesulfonate has been widely known as a base having excellent cleaning performance, but has a strong degreasing power from the skin,
It has a drawback that hand roughening easily occurs.

[0004] Therefore, recently, kitchen cleaners based on sodium alkyl ethoxysulfate, which is less irritating to the skin, have become the main cleaning base, and tertiary amine oxides and higher grades have been increasingly used. By using an auxiliary surfactant such as fatty acid diethanolamide in combination, various performances have been improved, and the effect on the skin has been made milder. However, although the effects of various cleansing agents on the skin have become milder than before, they have not yet reached a satisfactory level.

On the other hand, the alkyl glycoside of the sugar derivative surfactant is not only a mild surfactant but also a nonionic surfactant. 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
Japanese Patent Application Laid-Open No. 62-74999 describes a foaming surfactant composition containing an alkyl glycoside and an anionic surfactant, and Japanese Patent Application Laid-Open No. 62-74999 discloses an alkyl glycoside, an anionic surfactant and a fatty acid alkanol. A dishwashing liquid cleaning formulation containing an amide and having a mild and excellent foaming and 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 of foam after washing and hand feeling. Have the problem that

Accordingly, an object of the present invention is to provide a liquid detergent composition in which irritation and damage to the skin are remarkably reduced, foaming power and feeling of use are excellent, and foam rinsing properties after washing are good. Is to provide.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies to maximize the properties of alkyl glycosides, and have found that alkyl glycosides and nitrogen-containing surfactants and specific inorganic salts are used in specific proportions. By doing so, it has been found that a liquid detergent composition that can achieve the above object can be obtained.

The present invention has been made based on the above findings, and comprises 1 to 60% by weight of the following components (a), the following components (b) and (c), and comprises the components (a) and (b): ) And (b) / (a) = 1/200 to 1/2 by weight.
Wherein the ratio of component (a) to component (c) is in the range of (c) / (a) = 1/300 to 1/2 by weight. Is provided. (A) alkyl glycoside (b) carbobetaine or sulfobetaine (c) alkali metal halide

Hereinafter, the liquid detergent composition of the present invention will be described in detail. The alkyl glycoside of the component (a) of the present invention is used as a main surfactant, and is preferably represented by the following general formula (I) of the following [Chemical formula 3] (the same as the above [Chemical formula 1]).

[0010]

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In the general formula (I), the alkyl group, alkenyl group or alkylphenyl group represented by R ₁ has 8 to ₁ carbon atoms in terms of solubility, foaming property and detergency.
4, especially 9 to 11 are preferred. Further, the alkylene group represented by R ₂ has 2 to 2 carbon atoms in terms of solubility.
3, especially 2, are preferred. The structure of a residue derived from a reducing sugar having 5 to 6 carbon atoms represented by G is determined by a monosaccharide or two or more sugars used as a raw material.

Examples of the sugar as a raw material of G include glucose, fructose, galactose, xylose, mannose, lyxose, arabinose and mixtures thereof in the case of monosaccharides. Cellobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose, mixtures thereof and the like. Among these, glucose and fructose are preferred as monosaccharide raw materials in view of their availability and low cost, and maltose and sucrose are preferred for disaccharide or higher sugars. Among them, glucose is particularly preferred.

In the general formula (I), x represents a number whose average value is 0 to 5, and a preferable average value is 0 to 5.
2, a particularly preferred average value is 0. The water solubility and crystallinity of the component (a) can be adjusted by this value. That is, the larger the value of x, the higher the water solubility and the lower the crystallinity. Y has an average value of 1 to
It shows a number that is 10, but a preferred average value is about 1.0 to
3.0, a particularly preferred average value is 1.1 to 1.4.
The value in this range is a preferable value in order to obtain a sufficient foaming effect when the content of the components (b) and (c) described below, which are the foaming agents, is smaller. Further, when the average value of y is larger than 1, that is, when the compound contains an alkyl glycoside represented by the general formula (I) having a sugar group of two or more sugars as a hydrophilic group, the sugar chain binding mode is 1-2. 1-3, 1-4, 1-
It is possible to include any mixture of six bonds, or α-, β-pyranoside, or furanoside bonds and mixed modes of these.

The amount of the component (a) is 1 to 60% by weight (hereinafter simply referred to as%) in the composition of the present invention, preferably 10 to 40%. If the amount of component (a) is less than 1%, only insufficient effects are obtained with respect to detergency, foaming, and the like, and if it is more than 60%, stable compounding as a product is difficult.

[0015] As the nitrogen-containing surfactant of component (b) of the present invention, in that the washing Kiyoshiryoku, foaming power and rinsability, used is carboxymethyl betaine or sulfobetaine, the presence of oil stains or In terms of the foaming power in the absence of the compound, in particular, the following general formula (II) of the following [Chemical Formula 4] (same as the above [Chemical Formula 2])
Carbobetaine represented by is preferred.

[0016]

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Specific examples of the component (b) include alkylamidopropyl-N, N-dimethylacetate betaine, alkylamidopropyl-N, N-dimethyl-2-hydroxypropylsulfobetaine, and alkylamidopropyl-N, N -Dimethyl-propylsulfobetaine, dodecyl-N, N-dimethylacetate betaine and the like,
In terms of detergency, foaming power, and rinsing properties, amidopropyl-N, N-dimethyl-betaine laurate, amidopropyl myristate-N, N-dimethyl-betaine acetate, cocamidoamidopropyl-N, N- Betaine dimethyl acetate is preferred. These components (b) can be used alone or in combination of two or more.

The amount of component (b) is preferably 0.1 to 10%, more preferably 1 to 10%, in the composition of the present invention.
5%. If the amount of component (b) is less than 0.1%, insufficient effects on detergency and foaming are obtained, and if it exceeds 10%, the stability during low-temperature storage tends to decrease. is there.

The alkali metal halide of component (c) of the present invention includes, for example, lithium chloride, sodium chloride, potassium chloride and sodium bromide.
In particular, sodium chloride and potassium chloride are excellent in terms of the effect of preventing performance deterioration even during long-term storage at a low temperature. The above component (c) is used alone or in combination of two or more.

The amount of component (c) is preferably 0.1 to 10%, more preferably 0.1 to 10%, in the composition of the present invention.
1-3%. If the amount of component (c) is less than 0.1%, sufficient effects cannot be obtained, and if it is more than 10%,
The low-temperature stability of the composition tends to deteriorate.

Further, the liquid detergent composition of the present invention comprises the component (b) and the component (c) based on the component (a).
(B) / (a) = 1/200 to 1 /
2, preferably 1/50 to 1/2, (c) / (a) = 1
/ 300 to 1/2, preferably 1/50 to 1/2. (B) / (a) ratio is 1/200
When the ratio is less than 1 or when the ratio of (c) / (a) is less than 1/300, the effect of preventing performance deterioration during long-term storage at a low temperature is poor, while the ratio of (b) / (a) or When the ratio of (c) / (a) exceeds 1/2, it becomes difficult to mix the composition.

In the cleaning composition of the present invention, in addition to the above essential components, if necessary, a known surfactant for a cleaning agent may be appropriately added for the purpose of improving the detergency and foaming power. it can. The surfactant is not particularly limited,
One or more kinds selected from the group consisting of nonionic surfactants and anionic surfactants may be mentioned.

Examples of the anionic surfactant include linear alkyl (C ₁₀ -C ₁₈ ) benzenesulfonates, polyoxyethylene (average addition mole number of 1 to 6) alkyl (C
₈ -C ₁₈ linear or branched) alkylene oxide adducts alkyl or alkenyl ether sulfates, such as sulfates of, alpha-olefins (C ₈ -C ₂₀₎ sulfonic acid salts, alkanesulfonic acid salts, alkylene oxide adducts alkyl or alkenyl ether carboxylic acid salts, salts and esters thereof α- sulfofatty acids, N- acyl (C ₈ ~
C ₁₈ ) glutamate and the like. Examples of the counter ion of the salt constituting the anionic surfactant include alkali metal ions such as sodium and potassium, alkaline earth metal ions such as magnesium, ammonia, arginine or monoethanolamine, diethanolamine, and triethanolamine. And the like.

Examples of the nonionic surfactant include polyoxyethylene (average number of moles added: 1 to 20) alkyl or alkenyl (C _{7 to} C ₁₈ linear or branched) ethers and polyoxyethylene alkyl phenyl ethers ,
Polyoxypropylene alkyl or alkenyl ethers, polyoxybutylene alkyl or alkenyl (C ₇
Linear or branched) ethers -C _18, alkylene oxide addition alkyl or alkenyl group containing non-ionic surfactant mixture, sucrose fatty acid esters, fatty acid glycerol monoesters, amine oxides, ethylene oxide condensation surfactants Agents and the like. The amount of the surfactant is 0.1 to 30%, particularly 1 to 1% in the composition of the present invention.
It is good to be 0%.

The pH range of the stock solution of the detergent composition of the present invention is preferably from 4 to 10, and particularly preferably from 5 to 8 from the viewpoint of roughening. Further, other optional components can be added to the detergent composition of the present invention as long as the dispersion stability, detergency and foaming performance of the composition are not impaired. For example, lower fatty acid alcohols such as ethyl alcohol, solubilizing agents such as sodium and potassium salts of toluenesulfonic acid and xylenesulfonic acid, urea and the like are used in an amount of 0.1 to 10%, and viscosity of clay minerals and water-soluble polymer substances is used. 0.01-5% of modifier, water-insoluble abrasives such as calcite, silica, calcium phosphate, zeolite, polyethylene, nylon, and polystyrene; humectants such as glycerin and sorbitol; feel improvers such as cationized cellulose; and other enzymes Fragrances, pigments, preservatives and fungicides, and the like.

[0026]

EXAMPLES 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 Liquid detergent compositions shown in the following [Table 1], [Table 2] and [Table 3] were prepared, and these liquid detergent compositions were tested according to the following test methods and evaluation criteria. The cleaning power, the foaming power, the rinsing properties, the hand feel during and after use, and the hand roughness were evaluated. The results are shown in the following [Table 1], [Table 2] and [Table 3].

[Test Method and Evaluation Criteria] (1) Detergency Test Sudan III (red dye) was added to beef tallow as an indicator at 0.1%.
2.5 g of this solution was applied to a porcelain dish (25 cm in diameter), and 3 g of detergent and water (water having a hardness of 3.5 ° DH) 2
It is rubbed and washed at 20 ° C. using a sponge impregnated with 7 g, and is expressed by the number of dishes that can be washed until tallow cannot be removed from the dishes.

(2) 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 detergent solution to which the above-mentioned butter has been added is placed in a glass cylinder having a diameter of 5 cm, and the mixture is rotated and stirred for 10 minutes to measure the foam height immediately after the stop.

(3) Rinsing test: A concentration of 0.25 in a bat having a diameter of 30 cm and a height of 12 cm.
3 liters of the sample solution is rotated and stirred for 10 minutes, and a cock attached to the bottom of the whipping vat is opened to discharge only the liquid. Next, add 3 liters of tap water and 10
The mixture is rotated and stirred for 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.

(4) Test of Hand Feeling During and After Use Two kinds of detergents A and B are prepared, and a 10% detergent solution is prepared at 40 ° C. in a 2-liter beaker. The feel of the aqueous solutions of the detergents A and B is evaluated by a sensory test in the following manner. Feeling at the time of use Dip left and right separately into the aqueous solution of detergents A and B up to the wrist.
The feel of the liquid 1 minute after immersion is scored based on the following evaluation points based on the detergent B. -Detergent A does not get nully: +2-Detergent A does not get nully: +1-Can't say either: ± 0-Detergent A gets slightly nully: -1-Detergent A gets nully: -2 Feeling after use After sufficient rinsing, the feel of hands after wiping with a dry towel is scored based on the following evaluation points based on detergent B. -Detergent A does not get nully: +2-Detergent A does not get nully: +1-Can't say either: ± 0-Detergent A gets slightly nully: -1-Detergent A gets nully: -2 The above test is performed on 10 subjects, and the feeling of use of detergent A is evaluated by the sum of the scores obtained for each item.
The detergent B (reference product) and the detergent A used in the test of hand feeling at the time of use and after use are as follows. In the following [Table 1], the detergent B is comparative product 8, the detergent A is inventive products 1 to 6, and comparative product 7,
In Table 2 below, the detergent B was a comparative product 1
6. The detergent A is the products 9 to 14 of the present invention and the comparative product 15, and in Table 3 below, the detergent B is the comparative product 21, and the detergent A is the present products 17 to 19 and the comparative product 20.
It is.

(5) Hand Roughness Test A detergent solution containing 5% of a detergent composition is prepared, the temperature of the solution is kept at 30 ° C., the hands are immersed for 20 minutes every day, and then thoroughly washed with water. This operation is repeated for three days. Four days later, the state of the hands of the five subjects was 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 be 4 or more. 5 points: Hand roughness is hardly recognized. 4 points: Hand roughness is slightly recognized. 3 points: Hand roughening is slightly observed.・ 2 points: Hand roughness is considerable. 1 point: Hand roughness is remarkably recognized.

[0033]

[Table 1]

[0034]

[Table 2]

[0035]

[Table 3]

[0036]

EFFECTS OF THE INVENTION The liquid detergent composition of the present invention has remarkably reduced irritation and damage to the skin, has excellent foaming power and feeling of use, and has good foam rinsing properties after washing. (Claim 1). Further, the liquid detergent composition of the present invention further improves the above effect by using a specific alkyl glycoside for the component (a) (claim 2), and further increases the foam by using a specific alkyl glycoside. Even if the contents of the components (b) and (c), which are agents, are small, a sufficient foaming effect can be obtained (claim 3). Furthermore, the liquid detergent composition of the present invention further improves the foaming power in the presence or absence of oil stains by using a specific carbobetaine (claim 4 ).

Continuation of the front page (51) Int.Cl. ⁷ Identification code FI C11D 7/10 C11D 7/10 // A61K 7/50 A61K 7/50 (56) References JP-A-5-132699 (JP, A) JP-A-3-47147 (JP, A) JP-A-2-231412 (JP, A) JP-A-5-504780 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C11D 17 / 08 C11D 1/74 C11D 1/90 C11D 1/92 C11D 7/10 A61K 7/075 A61K 7/50

Claims (4)

(57) [Claims] 1. A composition comprising 1 to 60% by weight of the following component (a), the following component (b) and the following component (c), wherein the ratio of the component (a) to the component (b) is (b) / (A) = 1/20
0 to 1/2, and the ratio of the component (a) to the component (c) is (c) / (a) = 1/300 to 1/2 by weight. Liquid detergent composition. (A) alkyl glycoside (b) carbobetaine or sulfobetaine (c) alkali metal halide 2. The component (a) is an alkyl glycoside represented by the following general formula (I):
A liquid detergent composition according to the above. Embedded image 3. The compound represented by the general formula (I) of the above formula (1)
The liquid detergent composition according to claim 1, wherein is in the range of 1.1 to 1.4. 4. The carbobetaine represented by the following general formula (II):
2. The liquid detergent composition according to 1 . Embedded image