JPH08176595A - Aqueous cleaner composition - Google Patents

Abstract

PURPOSE: To obtain the subject composition useful for cleaning a bathroom, having excellent decomposability/cleanability of hard stain such as scale, safety to a metal member, low skin irritation, containing a surfactant, an acidic sequestering agent, morpholine (derivative) and having a specific pH. CONSTITUTION: This composition comprises (A) 0.1-20wt.% of a surfactant [e.g. a polyoxyethylene alkyl (phenyl) ether having the number of addition mols of ethylene oxide of 6-35 and a 5-22C alkyl as its alkyl or an alkyl ether sulfuric ester salt], (B) 0.5-10wt.% of a sequestering agent [e.g. a citrate or (disodium) ethylenediaminetetraacetate] and (C) 0.1-5wt.% of morpholine (derivative) (e.g. 4-methylmorpholine 4-oxide monohydrate) and has pH 4.5 to pH 8.0.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to aqueous detergent compositions. In particular, the present invention relates to an aqueous detergent composition suitable for effectively cleaning and removing stains such as scaled water attached in a bathtub, a bathroom, a washroom and the like.

[0002]

BACKGROUND OF THE INVENTION Bathroom dirt is a combination of sebum from the human body and metal ions such as calcium, magnesium and iron in hot water, and metal soap formed by the reaction between soap used and metal ions in hot water ( Soap residue) is mixed in various forms, forming stubborn stains. Conventionally, detergents for this purpose include neutral detergents mainly composed of surfactants, surfactants,
Examples thereof include acidic detergents composed mainly of water-soluble solvents such as organic acids and glycol ethers, and also alkaline detergents containing a surfactant, alkanolamine, silicate and phosphate.

[0003]

Among these, neutral detergents are highly safe for workers and working environments, but their essential detergency is not satisfied. Also, alkaline detergents
It has more detergency than neutral detergent, but has strong skin irritation,
For workers who always wash their hands with bare hands, the problem of rough hands is pointed out and it is hard to say that it is an appropriate detergent. On the other hand, the acidic detergent is most effective against the above-mentioned peculiar stains, but it damages the joints of bathroom tiles and materials such as stainless steel bathtubs, aluminum members and marble floors. In addition, there are toilet cleaners and mold removers that are mainly composed of chlorine bleach in the cleaning group, and chlorine gas is generated when these detergents are mixed with acidic bathroom cleaners due to misuse. There is a risk of

[0004]

Means for Solving the Problems In consideration of these situations, the present inventor has made a keen opinion in order to obtain a bathroom detergent which is excellent in detergency and is safe for the human body, materials, working environment, etc. An aqueous detergent composition obtained by neutralizing an ion sequestering agent showing acidity with morpholine or its derivative compound in the presence of a surfactant exhibits excellent detergency against stains in the bathroom and, at the same time, is present in the neutral region, and therefore metal The present invention has been accomplished by discovering that it hardly invades bathroom materials such as furniture and marble, and that there is little worry of rough hands. That is, the present invention is
(A) 0.1 to 20% by weight of surfactant, (B) 0.5 to 10% by weight of ion sequestering agent, and (C) 0.1 to 5% by weight of morpholine or derivative compound as essential components And a pH of 4.5 to 8.0.

The component (A) surfactant used in the present invention is not particularly limited, and it is a nonionic or anionic surfactant used as a general household or commercial detergent. A cleaning active ingredient consisting of More specifically, in the nonionic surfactant, the number of moles of ethylene oxide added is 6 to 35 and the number of carbon atoms in the alkyl chain is 5
22 polyoxyethylene long-chain alkyl ethers and polyoxyethylene alkylphenyl ethers, fatty acid diethanolamides, alkyldimethylamine oxides, and as anionic surfactants, alkyl ether sulfate ester salts, ethylene oxide moles 1-
6, polyoxyethylene alkyl ether sulfuric acid ester salts having an alkyl chain of 5 to 22 carbon atoms, alkylbenzene sulfonic acid salts and the like. The content of the component (A) in the aqueous detergent composition of the present invention is 0.1 to 20% by weight, preferably 1 to 10% by weight. When the blending amount is 0.1% by weight or less, the stains removed by the action of the components (B) and (C) are not sufficiently dispersed and solubilized in water, and the detergency is insufficient. On the other hand, when the blending amount is 20% by weight or more, on the contrary, excessive foaming is observed, and
It is not preferable because it also causes a decrease in rinsability.

As the sequestering agent showing acidity of the component (B), organic acids such as citric acid and pyrophosphoric acid, ethylenediaminetetraacetic acid, hydroxyethylenediaminetriacetic acid,
Examples thereof include aminocarboxylic acids such as nitrilotriacetic acid, and water-soluble salts thereof. Examples of the water-soluble salt include ammonium salts as well as alkali metal salts such as sodium salts and potassium salts, and examples thereof include ethylenediaminetetraacetic acid disodium salt and ethylenediaminetetraacetic acid amine salt. The compounding amount of the component (B) is 0.5 to 10
%, Preferably 1 to 5% by weight. If the blending amount is 0.5% by weight or less, it is difficult to effectively remove stains such as scales by washing, while if the blending amount is 10% by weight or more, the problem of rough hands occurs, which is not preferable.

The component (C) is a component for neutralizing the component (B) without deteriorating the detergency and for adjusting the pH of the aqueous detergent composition to pH 4.5 to 8.0. Morpholine and its derivatives Examples of the compound include 4-methylmorpholine 4-oxide monohydrate and the like. The present inventors compared other neutralizing agents with sodium hydroxide, potassium hydroxide, alkali metal salts of silicic acid and carbonic acid, monoethanolamine, diethanolamine, triethanolamine, etc., but the detergency is deteriorated. It was difficult to neutralize without. The amount of component (C) used is 0.1-5.
% By weight, and depends on the amounts of the components (A) and (B) used, and the amount necessary in the above range for adjusting the pH to a preferable range is used. (C) in this range
If the amount of component used cannot be adjusted, adjust the amount of component (B).

The pH of the aqueous detergent composition of the present invention is 4.5-.
It is 8.0, preferably 5.5 to 7.5, and more preferably 6.0 to 6.5. In addition, (A) component,
With respect to all of the components (B) and (C), one type or two or more types can be used respectively. Further, in the present invention, by adding a fatty acid diethanolamide, an alkyldimethylamine oxide, or the like, a composition having a further excellent foaming property and suppressing the sagging and drying of the detergent during use on an upright surface can be obtained. Further, a low temperature stabilizer, a fragrance, a dye, a preservative and the like can be optionally mixed.

[0009]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples. Example 1 As component (A), 2.0% by weight of polyoxyethylene alkyl ether having an average ethylene oxide addition mole number of 9 and an alkyl chain carbon number 12 of 12%, ethylene oxide addition mole number of an average of 3 and alkyl chain carbon number of 12 0.84% by weight of polyoxyethylene alkyl ether sulfate ester salt, 0.10% by weight of lauryl dimethylamine oxide, and 2.0% by weight of metaxylene sulfonate, ethylenediaminetetraacetic acid disodium 2.5 as component (B) By weight, 0.25% by weight of morpholine as the component (C) was mixed with water to prepare an aqueous detergent composition. P of this thing
H was 6.1. Then, a detergency test was carried out by the following test method and evaluation method. First, after applying the prepared undiluted solution of the aqueous detergent composition to a polypropylene bath tub that has been used for half a year and has scales attached to it, rub it with a urethane sponge 10 times and wipe it with a waste cloth.
When the following five-level evaluation was visually performed, it was 5 points. 5 points: Dirt was quickly and completely removed during the prescribed scrubbing. 4 points: Dirt was completely removed after 10 reciprocating scrubs. 3 points: A little stain remained. 2 points ... About 50% of the stain remained. 1 point: Almost no dirt was removed.

Examples 2 to 4 An aqueous detergent composition was prepared with the same composition and blending amount as in Example 1 except that the blending amount of morpholine was changed, and the results were evaluated in the same manner as in Example 1. Are shown in Table 1 below.

[0011]

COMPARATIVE EXAMPLE 1 An aqueous detergent composition having the same composition as in Example 1 except that sodium hydroxide was used in place of morpholine, and having a pH of 6.1, was prepared in the same manner as in Example 1. When the evaluation was performed, it was 2 points. From this, it can be seen that the aqueous detergent composition of the present invention has an excellent cleaning effect.

Comparative Example 2 As an example of a general neutral detergent, 2.0% by weight of a polyoxyethylene alkyl ether having an average ethylene oxide addition mole number of 9, an alkyl chain carbon number average of 12 and an average ethylene oxide addition mole number of 3, Alkyl chain having 12 carbon atoms, polyoxyethylene alkyl ether sulfate ester salt 1.0% by weight, metaxylene sulfonate 1.0% by weight, 3-methyl, 3
-Methoxybutanol 5.0% by weight was mixed with the remaining amount of water to prepare an aqueous detergent composition. The pH of this product was 7.8. When the same evaluation as in Example 1 was carried out using the obtained aqueous detergent composition, the result was 1 point.
From this, it can be seen that the aqueous detergent composition of the present invention has an excellent cleaning effect.

[0014]

EFFECTS OF THE INVENTION Containing the components (A) to (C) of the present invention,
The aqueous detergent composition prepared to have a pH of 4.5 to 8.0 is a skin soap produced by the human body in the bathroom, or a metal soap (soap residue) formed by the reaction between soap used and metal ions in hot and cold water. )
The stubborn dirt mixed with such can be promptly decomposed and effectively cleaned. Its detergency is far superior to that of the conventional neutral detergent for bathrooms, which mainly uses only the effect of the surfactant, and exhibits a detergency comparable to that of the conventional acidic detergent for bathrooms. In addition to the detergency, the pH is especially 6.0.
The aqueous detergent composition of the present invention prepared to ~ 6.5 is more safe than acidic detergents for metal members in bathrooms, marble materials, etc., and has a tendency to cause skin irritation more than alkaline detergents for the same purpose. It has the characteristic of being low.

Claims (1)

[Claims] 1. (A) 0.1 to 20% by weight of a surfactant,
(B) 0.5-10 wt% of an ion sequestering agent showing acidity,
(C) Morpholine or derivative compound 0.1 to 5% by weight
Is contained as an essential component, and pH is 4.5-8.0, The aqueous detergent composition characterized by the above-mentioned.