JPH1025493A - Liquid cleanser composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a liq. cleanser compsn. which is highly effective in cleaning fur on a sink or soap scum on a bathtub by incorporating a specific aspartic acid-N,N-diacetic acid or alkylglycine-N,N-diacetic acid (salt) into the same. SOLUTION: This compsn. comprises 0.1-30wt.% aspartic acid-N,N-diacetic acid represented by formula I [wherein M<1> to M<4> are each H, an alkali or alkaline earth metal, ammonium, or (substd.) alkylammonium; and R<1> is O or OH] or alkylglycine-N,N-diacetic acid represented by formula II (wherein M<5> to M<7> are each the same as M<1> to M<4> ; and R<2> is a 1-18C alkyl or alkenyl) or its salt (A), 0.1-30wt.% surfactant (B), and 1-70wt.% water-insoluble abrasive (C), the wt. ratio of the surfactant to the abrasive being (1/1)-(1/100). Ingredient A enhances the power to clean fur on a sink or soap scum on a bathtub and gives a compsn. excellent in long-term storage stability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid cleanser composition having excellent cleaning performance and long-term storage stability.

[0002]

2. Description of the Related Art Dirt that is subject to cleansing includes dirt that has been denatured or burnt with oil, water scales in a sink,
There are slimming and soap residue stains in the bathtub.

[0003] In particular, water stains and soap scum stains stubbornly sticking to a sink have been known as stains that are difficult to remove. It is considered that such dirt is difficult to remove because the divalent metal ion acts as a binder for organic and inorganic dirt.

[0004] It is considered that a detergent containing a sequestering agent is effective for cleaning these stains. Phosphorus compounds represented by tripolyphosphate, hydroxycarboxylates represented by citric acid, chelating agents represented by ethylenediaminetetraacetate and diethylenetriaminepentaacetate are generally well known as sequestering agents. Have been.

[0005] However, sodium tripolyphosphate is excellent in terms of chelating ability, but is not preferred because it contains phosphorus, which contributes to eutrophication of rivers and lakes. In addition, a hydroxycarboxylate represented by citric acid has a low chelating ability, so that a high detergency cannot be expected. Further, chelating agents represented by ethylenediaminetetraacetate have very high chelating power, but are not always satisfactory in view of biodegradability by microorganisms in nature. In addition, when these sequestering agents are blended in a liquid cleanser, it is difficult to ensure the separation stability of the abrasive, and an effective sequestering agent and an abrasive are effectively blended as a detergent, It has been extremely difficult to obtain a composition having satisfactory detergency.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid cleanser composition which is excellent in long-term storage stability while increasing the detergency of stains which have been difficult to remove, such as water stains on a sink and soap stains in a bathtub. To provide things.

[0007]

Means for Solving the Problems The present inventors have intensively studied a composition which has improved detergency against water stains on a sink and soap stains on a bathtub as described above, and has excellent long-term storage stability. , Certain aspartic acid-N,
It has been found that the object can be achieved by blending N-diacetic acid or alkylglycine-N, N-diacetic acid or a salt thereof in a specific ratio.

That is, the present invention relates to (A) an aspartic acid-N, N-diacetic acid represented by the following general formula (1) or an alkylglycine-N, represented by the following general formula (2):
N-diacetic acid or a salt thereof 0.1 to 30% by weight,

[0009]

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Wherein M ^{1 to} M ⁴ represent hydrogen, an alkali metal, an alkaline earth metal, ammonium, alkyl ammonium or substituted alkyl ammonium, and R ¹ represents hydrogen or a hydroxyl group.

[0011]

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(Wherein, M ^{5 to} M ⁷ represent hydrogen, an alkali metal, an alkaline earth metal, ammonium, alkylammonium or substituted alkylammonium, and R ² has 1 carbon atom.
~ 18 alkyl groups or alkenyl groups. ) Containing (B) 0.1 to 30% by weight of a surfactant and (C) 1 to 70% by weight of a water-insoluble abrasive, and a ratio of the content of the component (B) to the content of the component (C). / (C) is 1/1 to 1/100 by weight
And a liquid cleanser composition.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the liquid cleanser composition of the present invention will be described in detail. Aspartic acid represented by the above general formula (1), which is the component (A) in the present invention,
In N, N-diacetate or the alkylglycine-N, N-diacetate represented by the above general formula (2) or a salt thereof, M ^{1 to} M ⁷ in the general formulas (1) and (2) (vs. As ions, hydrogen, sodium and potassium are generally used. here,
A partially neutralized product has the highest sequestering ability and a high detergency improving effect, but a completely neutralized product also exhibits a sufficient detergency improving effect. In the general formula (2), R ² is particularly preferably a linear alkyl group or an alkenyl group, and further has 1 carbon atom from the viewpoint of solubility and detergency.
~ 18, especially 1 ~ 10 are preferred. These compounds are available, for example, as Trilon ES series manufactured by BASF or Nitto Chemical.

In the present invention, component (A) is contained in the composition in an amount of 0.1%.
-30% by weight, preferably 1-10% by weight. (A)
If the amount of the component is less than 0.1% by weight, sufficient detergency cannot be obtained. If it exceeds 30% by weight, the dispersion stability will be reduced.

As the component (B) in the present invention, general surfactants can be widely used, but it is preferable to use one or more selected from anionic surfactants and nonionic surfactants. .

Further, as the anionic surfactant, a sulfonic acid type anionic surfactant is preferable. The most preferred examples of the sulfonic acid type activator include an alkyl benzene sulfonate, an alkyl ether sulfonate and a polyoxyalkylene alkyl ether sulfonate.

In the alkyl benzene sulfonate, the alkyl group is linear or branched, and a benzene sulfonic acid group is attached to the terminal or middle of the alkyl group, and the counter ion is preferably an alkali metal salt such as sodium or potassium.
The alkyl chain length is preferably one having 8 to 22 carbon atoms.

The alkyl ether sulfonate preferably has an alkyl chain length of 8 to 22 carbon atoms, and the counter ion is preferably an alkali metal salt such as sodium or potassium.

In the polyoxyalkylene alkyl ether sulfonate, the alkyl chain preferably has 8 to 22 carbon atoms, and the number of moles of oxyalkylene added is preferably 1 to 7. The counter ion is preferably an alkali metal salt such as sodium or potassium.

Further, examples of the nonionic surfactant include a higher fatty acid (C ₈ -C ₂₂ ) alkanolamide represented by the following general formula (3) or an alkylene oxide adduct thereof.

[0021]

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(R ³ represents a fatty acid residue having 8 to 20 carbon atoms;
m and n are numbers satisfying m + n = 1 to 10. Also, similarly, an amine oxide represented by the following general formula (4) can be mentioned.

[0023]

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(In the formula, R ⁴ represents an alkyl group having 8 to 22 carbon atoms, and R ⁵ and R ⁶ represent an alkyl group having 1 to 3 carbon atoms.) In addition, the following general formula (5) is used. Polyoxyethylene alkyl ethers to be used. R ⁷ -O- (CH ₂ CH ₂ O) _n -H (5) (wherein, R ⁷ represents a linear or branched alkyl group having 8 to 18 carbon atoms, and n represents a number of 2 to 20) Is.).

In the present invention, the component (B) is contained in the composition in an amount of 0.1%.
-30% by weight, preferably 0.5-10% by weight.
If the amount of component (B) is less than 0.1% by weight, sufficient detergency cannot be obtained, and if it exceeds 30% by weight, stabilization becomes difficult.

The water-insoluble abrasive component (C) used in the present invention includes silicon dioxide, aluminum oxide, aluminum hydroxide, magnesium oxide, titanium oxide, silicon carbide, calcium carbonate, calcium phosphate, and the like.
Examples thereof include chromium oxide, synthetic zeolite, natural zeolite, corundum, emery, quartzite, quartz sand calcite, dolomite, and polymer beads such as polyvinyl chloride, polystyrene, polyethylene, and ABS. Among them, silicon dioxide, calcium carbonate, synthetic zeolite and silica stone having an average particle diameter of 1 to 40 μm are most preferred. these
The component (C) is blended in an amount of 1 to 70% by weight, preferably 5 to 60% by weight.

In the present invention, the total content of the component (B)
(C) Component content ratio (B) / (C) is 1/1 to 1 in weight ratio.
/ 100, preferably in the range of 1/5 to 1/50. If the ratio is out of this range, the washing performance will not be sufficiently exhibited.

In carrying out the present invention, the long-term storage stability can be further improved by using an organic acid and / or sodium silicate together. Examples of the organic acid used include malonic acid, malic acid, tartaric acid, citric acid, L-aspartic acid, and salts thereof.
Sodium silicate No.1, Sodium silicate No.2, Sodium silicate No.3, Sodium silicate No.4, Sodium orthosilicate, Sodium sesquisilicate,
Examples include sodium metasilicate.

The liquid cleanser composition of the present invention contains an alkali agent, a solvent,
Hydrotropes, bactericides, fragrances, pigments, dyes and the like can be optionally added.

Examples of the alkali agent used include organic alkali agents such as ammonia, monoethanolamine, diethanolamine, triethanolamine and morpholine; alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; potassium carbonate; Sodium acid, sodium tripolyphosphate, sodium borate and the like, or potassium salts thereof can be used.

Examples of the solvent include aliphatic monohydric alcohols such as ethyl alcohol and butyl alcohol, ethylene glycol, propylene glycol, polyethylene glycol, and their aliphatic lower alcohols (methyl,
Ethers such as ethyl, propyl, butyl and the like.

Hydrotroping agents include paratoluenesulfonate, urea, sodium benzoate and cumenesulfonic acid.
Etc. can be used.

The pH of the liquid blender composition of the present invention
Is neutral to alkaline in order to exhibit excellent detergency, especially detergency against denatured oil stains, specifically pH 7 to
11, preferably adjusted to about pH 8-11.

[0034]

Industrial Applicability The liquid cleanser composition of the present invention has excellent long-term storage stability while increasing the detergency of stains that have been difficult to remove, such as water stains on a sink and soap stains on a bathtub.

[0035]

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

Examples 1 to 72 and Comparative Examples 1 to 30 Liquid cleanser compositions having the compositions shown in Tables 1 to 8 were prepared (pH 10.0), and the cleaning performance and stability of each composition were evaluated. Was carried out. The results are collectively shown in Tables 1 to 8. The evaluation method is as follows.

<< Evaluation Method >> 1) Washing performance 1-1) Oil-denatured soil 1.0 g of rapeseed oil / carbon black (5/1 by weight) was applied to a 3 × 8 cm iron test plate at 150 ° C.
And used for 120 minutes. The evaluation method was as follows: 1 g of the cleanser composition was collected, and 1 g of urethane sponge was used.
The relative washing rate between the samples was determined from the weight loss rate after washing 30 reciprocations under a load of kg / 30 cm ^{2, and} the results were converted into the following five-grade evaluations. Relative cleaning rate (%) A; 81 to 100 B; 61 to 80 C; 41 to 60 D; 21 to 40 E; 0 to 20 (Relative cleaning rate (%); did).

1-2) Stain adhered to bathtub The stainless steel bathtub to which the bath stain which does not fall off at all to the extent of rubbing is scrubbed with a urethane sponge impregnated with each composition, and the cleaning effect is visually observed. Was determined by Relative cleaning rate (%) A; 81 to 100 B; 61 to 80 C; 41 to 60 D; 21 to 40 E; 0 to 20 (Relative cleaning rate (%); did).

2) Storage stability Each of the liquid cleanser compositions for evaluation was placed in a 100 ml glass bottle, and the dispersion stability after standing at 30 ° C. for one month was evaluated. The evaluation at this time is as follows. A: stable B: slightly synergic C: clearly separated

[0040]

[Table 1]

[0041]

[Table 2]

[0042]

[Table 3]

[0043]

[Table 4]

[0044]

[Table 5]

[0045]

[Table 6]

[0046]

[Table 7]

[0047]

[Table 8]

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location C11D 1/75 C11D 1/75 3/14 3/14 17/08 17/08

Claims (4)

[Claims] (A) Aspartic acid-N, N-diacetic acid represented by the following general formula (1) or the following general formula (2)
Alkylglycine-N, N-diacetic acid represented by or a salt thereof
0.1-30% by weight, (Wherein, M ^{1 to} M ⁴ represent hydrogen, an alkali metal, an alkaline earth metal, ammonium, an alkyl ammonium, or a substituted alkyl ammonium, and R ¹ represents a hydrogen or a hydroxyl group.) (Wherein, M ^{5 to} M ⁷ represent hydrogen, an alkali metal, an alkaline earth metal, ammonium, an alkyl ammonium or a substituted alkyl ammonium, and R ² represents an alkyl or alkenyl group having 1 to 18 carbon atoms.) B) It contains 0.1 to 30% by weight of a surfactant and (C) 1 to 70% by weight of a water-insoluble abrasive, and the ratio of the content of the component (B) to the content of the component (C) (B) / ( C) is 1/1 to 1/100 by weight
A liquid cleanser composition that is: 2. The liquid cleanser composition according to claim 1, wherein the component (B) is one or more selected from an anionic surfactant and a nonionic surfactant. 3. The liquid cleanser composition according to claim 2, wherein the anionic surfactant is a sulfonic acid type surfactant. 4. A nonionic surfactant comprising a higher fatty acid alkanolamide and an alkylene oxide adduct thereof,
The liquid cleanser composition according to claim 3, wherein the composition is at least one member selected from the group consisting of an amine oxide and a polyoxyethylene alkyl ether.