JPH0633410B2 - Separable liquid detergent composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a two-layer separation type liquid detergent composition. More specifically, the present invention clearly separates into two layers, a layer mainly containing a surfactant and a layer mainly containing a salting-out agent in a stationary state, and the upper and lower layers are colored visually. Also relates to an excellent liquid detergent composition.

2. Description of the Related Art Conventionally, in shampoos and detergents, in order to enhance the storage stability of individual contained components, so-called separated type components are separated so that the components do not mix when standing. Is being developed. For example, a higher alcohol ester of 2-ethylhexyl acid (Japanese Patent Publication No. 51-183).
Gazette), olive oil, and squalane (JP-A-48-5800).
7), fluid paraffin and almond oil (JP-A-5
Those containing an oily substance are known, such as JP-A 4-24908 and JP-A 54-25906.

However, these separable compositions can be colored in both upper and lower layers by properly using an acidic dye and an oil-soluble dye, but since they contain a large amount of the oily substance,
It has extremely low foaming property and is not suitable as a cleaning agent.

On the other hand, a two-layer separation type shampoo utilizing salting-out is also known (European Patent No. 116422). However,
Although this shampoo has good foamability, it has a problem that it is difficult to color both upper and lower layers like the composition containing the oily substance.

Problems to be Solved by the Invention Under such circumstances, the object of the present invention is to provide not only excellent foaming performance, but also to always clearly separate two layers in a stationary state and to color both upper and lower layers. Not only is it excellent in appearance,
(EN) It is intended to provide a two-layer separation type liquid detergent composition capable of clearly judging a mixed state at the time of shaking.

Means for Solving the Problems As a result of intensive studies by the present inventors, as a result, an anionic surfactant is a salting-out agent and a gluconate metal salt having a specific inorganic / organic ratio is a specific value. It has been found that a composition in which a dye is combined can meet the above-mentioned object, and the present invention has been completed based on this finding.

That is, the present invention provides (A) at least one anionic surfactant, (B) 5 to 30% by weight of a salting-out agent, and (C) a metal gluconate having a ratio of an inorganic value / an organic value of 3 or more. A two-layer separation type liquid detergent composition containing at least one selected from salts and dyes (excluding Yellow No. 203) and colored in the upper and lower layers in a stationary state. It is to provide things.

In the composition of the present invention, as the anionic surfactant used as the component (A), an ordinary sulfonate-based, sulfate-based, or phosphate-based anionic surfactant is used. Among these anionic surfactants, examples of sulfonate anionic surfactants include straight chain or branched chain alkyl (C _{8 to} C ₂₃ ) benzene sulfonate, long chain alkyl (C _{8 to} C ₂₂ ). Sulfonate, long-chain olefin (C ₈
-C ₂₂₎ sulfonic acid salts. Examples of Sarufueto anionic surfactant, such as a long-chain monoalkyl (C ₈ -C ₂₂₎ sulfuric acid ester salts, polyoxyethylene (1-6 moles) long chain alkyl (C ₈ -C ₂₂₎ ether sulfate , Polyoxyethylene (1 to 6 mol) alkyl (C _{8 to} C ₁₈ ) phenyl ether sulfate ester salt, and the like. Examples of the phosphate type anionic surfactant include long chain monoalkyl, dialkyl or sesqui ( Each alkyl group has 8 to 22 carbon atoms) phosphate, polyoxyethylene (1 to 6 mol) monoalkyl, dialkyl or sesqui (each alkyl group has 8 carbon atoms)
~ 22) and the like. The cation as a counter ion of these anionic surfactants is, for example, an alkali or alkaline earth metal ion such as sodium, potassium or magnesium, or an alkanolamine ion such as monoethanolamine, diethanolamine or triethanolamine.

Among these anionic surfactants, particularly α-olefin sulfonate, polyoxyethylene alkyl ether sulfate, alkane sulfonate, higher alcohol sulfate ester salt, polyoxyethylene higher alcohol phosphate ester or salt thereof, polyoxyethylene Ethylene higher fatty acid esters or salts thereof, N-acyl acidic amino acid salts, basic amino acid salts and the like are preferable.

The anionic surfactants may be used alone or in combination of two or more.

In the composition of the present invention, the salting-out agent used as the component (B) is preferably a carboxyl compound and a phosphate.
As the carboxyl compound, for example, an organic carboxylic acid and its salt, an aminocarboxylic acid and its salt, salts of a water-soluble polymer compound composed of a polymer of a monomer having a carboxyl group such as acrylic acid, and the like are used. Examples of the organic carboxylic acid salts include polycarboxylic acids such as malonic acid, succinic acid, fumaric acid, itaconic acid and adipic acid,
Examples thereof include salts of hydroxycarboxylic acids and hydroxypolycarboxylic acids such as malic acid, tartaric acid, citric acid and α-oxyglutaric acid. Examples of the aminocarboxylic acid salt include salts of aliphatic or aromatic amino acids such as glycine, leucine, serine, aspartic acid, glutamic acid, glutamine, cysteine, lysine and tyrosine, or salts of ethylenediaminetetraacetic acid and nitrilotriacetic acid. . Examples of the water-soluble polymer compound and salts thereof include polymers such as acrylic acid and hydroxyacrylic acid, and salts thereof.

These compounds may be used alone or in combination of two or more.

Among the above-mentioned carboxyl compounds, preferred is one having 1 or more amino groups or 2 or more hydroxyl groups when the number of carboxyl groups is 1, and 2 or more carbon atoms and 2 carboxyl groups.
In the case of more than one, it is one kind or a mixture of two or more kinds selected from organic carboxylic acids having 3 or more carbon atoms, aminocarboxylic acids, and salts of water-soluble polymer compounds, particularly those having a molecular weight of several thousand to several tens of thousands. Sodium polyacrylate is preferred.

On the other hand, as the phosphate, a condensed phosphate obtained by, for example, a method of heating and dehydrating monosodium phosphate or a mixture of orthophosphoric acid and sodium hydroxide, particularly a general formula (NaPO ₃ ) _n. ) (Wherein n is a number of 3 or more) is preferable. Specific examples of such compounds include sodium hexametaphosphate and Graham's salt.

Further, as another condensed phosphate, sodium polyphosphate represented by the general formula Na _{n + 2} P _n O _{3n + 1} (II) (where n is a number of 3 or more) can be used. . Examples of the compound represented by the general formula (II) include sodium tripolyphosphate and sodium tetraphosphate.

These phosphates may be used alone or 2
They may be used in combination of one or more kinds, or may be used in combination with the above-mentioned carboxyl compound.

The content of the salting-out agent in the composition of the present invention is selected in the range of 5 to 30% by weight based on the weight of the composition. If this amount is less than 5% by weight, the separability of the composition is poor, and if it exceeds 30% by weight, the detergency is deteriorated.

In the composition of the present invention, as the component (C), at least one selected from gluconic acid metal salts and pigments (excluding yellow No. 203) is used. It is necessary that the ratio of inorganic value / organic value is 3 or more. When this ratio is less than 3, the metal salt or the dye itself is salted out and transferred to the upper layer, making it impossible to color the lower layer.

As used herein, the inorganic value and the organic value are water for an inorganic compound, methane as a basic compound for an organic compound, water for other compounds, and properties as an inorganic compound or an organic compound as a derivative of methane, respectively. These numerical values are shown in, for example, "Organic Conceptual Diagram" by Yoshio Koda, published by Sankyo Publishing Co., Ltd. in 1984.

Examples of the metal salt of gluconate include copper gluconate, zinc gluconate, and the like, and examples of the dye include yellow No. 4, yellow No. 5, green No. 204, green 401.
No. 2, Red No. 2, Red No. 227 and the like.

These metal gluconate salts and dyes may be used alone, in combination of two or more, and may be used in combination with other dyes.

The content of the component (C) in the composition of the present invention is usually selected in the range of 0.01 to 100 ppm with respect to the composition.

The detergent composition of the present invention may contain, if necessary, conventionally used auxiliary additives depending on the type and purpose of use. Examples of such additives include salt, Glauber's salt, solubilizing agents, antioxidants such as BHT and α-tocopherol, ultraviolet absorbers, protein derivatives, animal and plant extracts, bactericides, pigments, fragrances, and cationic agents. A conditioning agent such as a polymer may be used.

Further, for the purpose of adjusting detergency and foamability, other types of nonionic surfactants and amphoteric surfactants may be added within a range that does not impair the separability. In this case, examples of the other type of surfactant include alkanolamide, sugar alcohol fatty acid ester, carboxybetaine, sulfobetaine, etc., and one or more of these surfactants may be used appropriately. You can

EFFECTS OF THE INVENTION The two-layer separation type liquid detergent composition of the present invention is not only excellent in appearance because it beautifully separates two layers in a stationary state and is colored in both upper and lower layers, but also when shaken. Since the colors of the upper and lower layers are mixed, the mixed state can be clearly determined, and it has a high commercial value, and can be widely used as a liquid detergent for kitchen detergents, clothing detergents, shampoos, and the like.

Example Next, the effect of the present invention will be described more specifically by showing an example and a comparative example.

The separability of the cleaning composition and the colorability of the lower layer were evaluated as follows.

(1) Separability Whether or not the prepared detergent composition was allowed to stand for about 1 day to separate into two layers was visually determined according to the following criteria.

◯: Two layers are clearly separated. Δ: Two layers are separated but the interface is not clear. ×: Two layers are not separated. (2) Coloring property of the lower layer The prepared cleaning composition is put in a transparent container, and the lower layer is left standing. The degree of coloring was evaluated according to the following criteria.

◯: Colored x: Not colored Examples 1 to 12 and Comparative Examples 1 to 9 19 kinds of detergent compositions having the composition as shown in Table 1 were prepared, and their separation type and lower layer were prepared. Was evaluated for colorability. The results are shown in Table 1.

As is clear from this table, the compositions (Examples 1 to 12) in which all three essential components of the present invention are contained are separated into two layers and the lower layer is colored, while the second composition is The composition in which the essential component (component B) is outside the scope of the present invention (Comparative Example 1) and the composition in which the third essential component (Component C) is outside the scope of the present invention (Comparative Examples 2 to 9) are 2 Either the layers are not separated, or even if the two layers are separated, the lower layer is not colored and the purpose cannot be achieved.

Example 13 A shampoo composition having a composition as shown in Table 2 was prepared, and its separability and colorability of the lower layer were evaluated. The results are shown in Table 2.

As is apparent from this table, the shampoo composition exhibited excellent separability and colorability of the lower layer.

Claims (4)

[Claims] 1. A metal gluconate having (A) at least one anionic surfactant, (B) 5 to 30% by weight of a salting-out agent, and (C) an inorganic value / organic value ratio of 3 or more. And dye (however,
(Excluding Yellow No. 203), and a two-layer separation type liquid cleaning composition comprising at least one selected from the group consisting of (1) and (2) colored in the stationary state. 2. The composition according to claim 1, wherein the salting-out agent is at least one selected from a carboxyl compound and a phosphate. 3. The composition according to claim 1 or 2, wherein the metal gluconate is copper gluconate. 4. The dyes are yellow No. 4, yellow No. 5, green No. 204,
The composition according to claim 1, 2, or 3 which is at least one selected from green 401, red 2, and red 227.