JPH0699703B2 - Liquid cleaning composition for bathroom - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a liquid detergent composition, and more particularly to a neutral liquid detergent composition suitable for cleaning bathrooms.

[Conventional technology and its problems]

BACKGROUND ART In order to remove the dirt secreted from the human body adhered to the hard surface of a bathroom, an ether detergent containing a surfactant, a chelating agent and a glycol ether solvent has been conventionally used.

These liquid detergents are generally adjusted to have a weak acidity of 4.5 to 5.5 in order to maximize the cleaning effect, but it is known that some liquids have a sufficient cleaning effect even if they are neutral. For example, in JP-A-53-35710, a pH of 4.5 to 7.5 containing an anionic surfactant, a nonionic surfactant, a chelating agent such as citrate or ethylenediaminetetraacetate, and a glycol ether solvent. JP-A-63-51500 discloses a neutral bathroom cleaner composition containing a surfactant, a potassium salt of aminocarboxylic acid and a glycol ether solvent. ing.

By the way, if an acidic detergent is mistakenly mixed with a chlorine-based bleaching agent, there is a risk that chlorine gas, which is harmful to the human body, will be generated.
The generation of chlorine gas decreases as the pH becomes weakly acidic or neutral, but there is a problem that a slight amount of chlorine gas is generated in the above-mentioned known examples even when the pH is weakly acidic or neutral.

[Means for Solving the Problems]

As a result of intensive studies to solve the above problems, the present inventors have blended a hydroxycarboxylic acid or a salt thereof and an aminocarboxylic acid or a salt thereof in a specific ratio, and have a pH neutral liquid detergent composition. They have found that the product completely suppresses the generation of chlorine gas and has sufficient detergency, and completed the present invention.

That is, the present invention provides: (a) 0.1 to 10% by weight of an anionic surfactant and / or nonionic surfactant, (b) a hydroxycarboxylic acid or a salt thereof, and (c) an aminocarboxylic acid or a salt thereof, b) / (c) weight ratio is 10/1 to 1/1, and (b) +
(C) 0.1 to 20% by weight, (d) 0.1 to 20% by weight of an alkylene glycol lower alkyl ether-based solvent, and a pH of 6.0 to 8.0, which provides a liquid detergent composition for bathroom. To do.

As the anionic surfactant of the component (a) used in the present invention, a usual sulfonate-based anionic surfactant,
Sulfate anionic surfactants are used.

The sulfonate anionic surfactant, linear or branched chain alkyl (C ₈ ~C ₁₈₎ benzenesulfonate, long chain alkyl (C ₈ ~C ₂₂₎ sulfonates, long chain olefins (C ₈ ~ C ₂₂₎ sulfonic acid salts, and the like.

As also sulphate-containing anionic surfactant, 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 cations as counterions of these anionic surfactants include alkali metal ions such as sodium and potassium, and alkanolamine ions such as monoethanolamine, diethanolamine and triethanolamine.

A sulfonate-based anionic surfactant is preferred as the anionic surfactant of the present invention because of its strong resistance to hydrolysis. Among them, further straight or branched difference alkyl in terms of detergency such as (C ₈ ~C ₁₈₎ benzenesulfonate are preferred.

Nonionic surfactants which is the other component (a) polyoxyethylene (6 to 35 mol) long-chain alkyl (C ₈ -C ₂₂₎ ethers, polyoxyethylene (6-35 moles) alkyl (C ₈ -C ₂₂₎ phenyl ether.

In the present invention, the above-mentioned surfactant is contained in the composition in an amount of 0.1-2.
0 wt%, preferably 0.5 to 10 wt% is blended. Particularly, it is desirable to use 1 to 7% by weight of anionic surfactant and 1 to 7% by weight of nonionic surfactant in combination.

Specific examples of the hydroxycarboxylic acid as the component (b) include
Examples thereof include glycolic acid, lactic acid, gluconic acid, citric acid, malic acid, tartaric acid and the like.

Among these, malic acid, citric acid, tartaric acid or salts thereof are preferable. Examples of hydroxycarboxylic acid salts include sodium salts, potassium salts, monoethanolamine salts, diethanolamine salts, and triethanolamine salts.

Specific examples of the aminocarboxylic acid or salt thereof as the component (c) include nitrilotriacetic acid, isoserinediacetic acid, and compounds represented by the following general formula (II).

[In Formula, A and B show the following.

A: -CH ₂ COOH or -C ₂ H ₄ COOH B: -CH ₂ COOH, -C ₂ H ₄ OH, -C ₂ H ₄ N (CH ₂ COOH) ₂ or -C ₂ H ₄ N (CH ₂ COOH) C ₂ H ₄ N (CH ₂ COOH) ₂ ] As typical examples of the aminocarboxylic acid represented by the general formula (II), ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, N-hydroxyethylethylenediaminetriacetic acid, Examples thereof include ethylenediaminetetrapropionic acid and triethylenetetraminehexaacetic acid. Examples of the salt of aminocarboxylic acid include sodium salt, potassium salt, monoethanolamine salt, diethanolamine salt and triethanolamine salt.

In the present invention, the above-mentioned components (b) and (c) are (b) /
(C) 10/1 to 1/1 by weight, preferably 5/1 to 1/1,
The total amount of (b) + (c) is compounded in the composition in the range of 0.1 to 20% by weight, preferably 1 to 10% by weight. If the weight ratio and the blending amount are out of the above ranges, it is impossible to simultaneously prevent the generation of chlorine gas and satisfy the detergency.

The alkylene glycol lower alkyl ether solvent as the component (d) is represented by the following general formula (III).

_{RO- (C 2 H 4) x} (C 3 H 6 O) yR '(III) ( wherein, R, R' each represent H, an alkyl group having 1 to 4 carbon atoms, R, R 'are simultaneously It cannot be H. x, y
May be 0, but not 0 at the same time. x +
y is 1-10. ) Examples of the alkylene glycol lower alkyl ether solvent represented by the general formula (III) include ethylene glycol monoethyl ether, diethylene glycol monobutyl ether, hexapropylene glycol monoethyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol dimethyl ether, and ethylene. Glycol monobutyl ether, ethylene glycol monoamyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene glycol monopropyl ether, tripe Ropylene glycol monobutyl ether, polyoxyethylene (x = 1) polyoxypropylene (y = 4) glycol monoethyl ether, polyoxyethylene (x = 1) polyoxypropylene (y = 1.
5) Glycol butyl ether and the like.

These alkylene glycol lower alkyl ether solvents (d) are added to the composition of the present invention in an amount of 0.1 to 20% by weight, preferably 3 to 10% by weight.

The pH of the detergent composition of the present invention is adjusted to the range of 6.0 to 8.0. If the pH is less than 6.0, the generation of chlorine gas cannot be suppressed, and if it exceeds 8.0, the cleaning effect is impaired and the material such as aluminum sash is damaged.

In the liquid detergent composition of the present invention, a lower alcohol such as ethyl alcohol, a lower alkylbenzene sulfonate such as ethylene glycol, a benzene sulfonate, or a toluene sulfonate may be used as a low temperature stabilizer, or the commercial value thereof may be increased. In order to impart it, a fragrance, a dye, a preservative and the like can be optionally mixed.

〔Example〕

The present invention will be described below with reference to examples, but the present invention is not limited to these examples.

Example 1 Various cleaning compositions for bathrooms having the component compositions shown in Table 1 were prepared, and the respective cleaning power and chlorine gas generation amount were evaluated by the following methods.

<Evaluation method of detergency> Detergency is evaluated by using a polypropylene plate with bath stains that will not come off even if it is rubbed
A urethane sponge containing 5 g was rubbed 5 times with a load of about 1 kg, and the state of removal of stains on the bath surface was visually evaluated.

◯: Completely washed Δ: Discoloration of dirt was observed ×: Almost no effect <Chlorine gas generation test> The chlorine gas generation test will be described with reference to FIG.

FIG. 1 is a schematic diagram of an apparatus for performing a chlorine gas generation test.
A chlorine gas detector tube (SB type manufactured by Komei Rika Kogyo Co., Ltd.) 2 and a chlorine gas sampling device 3 of 100 ml are attached to a round container 1 with 22 plastic lids. Further, a fan 4 for stirring the inside of the container 1 is provided in the container 1,
A 10 ml beaker 5 containing the sample detergent composition is placed at the bottom of the container.

* Measurement method (1) At the bottom of the container 1, place a beaker 5 containing 1 ml of the sample detergent composition.

(2) Chlorine-based reference solution (sodium hypochlorite 5.0
%, Sodium hydroxide 1.0%) in a beaker 5.

(3) Immediately cover the container 1 and mix both solutions with a magnetic stirrer 6, and then circulate the inside of the container 1 with a fan 4 at 3000
Stir at rpm.

(4) Five minutes after mixing both liquids, connect the chlorine gas sampling device 3 to the back of the chlorine gas detection tube 2 and suck 100 ml of the gas in the container 1 once to measure the chlorine gas concentration. The room temperature and liquid temperature during the test shall be 20 ± 5 ° C.

The test results are shown in Table-1.

[Brief description of drawings]

 FIG. 1 is a schematic diagram of an apparatus for performing a chlorine gas generation test. 1 ... Container 2 ... Chlorine gas detector tube 3 ... Chlorine gas sampling device 4 ... Fan 5 ... Beaker 6 ... Magnetic stirrer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location C11D 3/43 (56) Reference JP-A-53-35710 (JP, A) JP-A-54- 158409 (JP, A) JP-A-51-71302 (JP, A) JP-A-57-105494 (JP, A)

Claims (2)

[Claims] 1. (a) 0.1 to 10% by weight of an anionic surfactant and / or nonionic surfactant, (b) a hydroxycarboxylic acid or a salt thereof, and (c) an aminocarboxylic acid or a salt thereof, b) / (c) weight ratio is 10/1 to 1/1, and (b) +
(C) 0.1 to 20% by weight, (d) 0.1 to 20% by weight of an alkylene glycol lower alkyl ether-based solvent and having a pH of 6.0 to 8.0, a liquid detergent composition for bathroom. 2. Anionic surfactant 1 as component (a).
The liquid cleaning composition for a bathroom according to claim 1, which comprises -7% by weight and 1-7% by weight of a nonionic surfactant.