JP2000328099A - Neutral liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a neutral liquid detergent composition which enables dirt on an object to be cleaned by wiping alone and is useful for cleaning a house or furniture by incorporating an ampholytic surfactant and a fatty acid (salt) having a specified number of carbon atoms in a specified ratio into the same so that the resultant composition has a specified pH. SOLUTION: This composition contains 0.05-2 wt.% at least one ampholytic surfactant and lower than 0.1 wt.% 8-18C fatty acid (salt) and has a pH of 6-8. Examples of an ampholytic surfactant used are a betaine type, an imidazoline type and an amino acid type. Lauric acid, coconut acid and myristic acid are preferable as the fatty acid from the viewpoint of low-temperature stability, and potassium salts, sodium salts and monoethanolamine salts are listed as water-soluble salts. In order to further enhance the detergency in the neutral range, the incorporation of a chelating agent is preferable; in this case, the amount of the agent incorporated is preferably 0.05-5 wt.% of the composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent for a house or a furniture which can be widely used for a house such as a floor, a wall, a glass surface, an electric appliance and the like and which can be washed only by an operation of wiping off a dirt on an object to be washed. It relates to a suitable liquid cleaning composition.

[0002]

2. Description of the Related Art Household cleaning agents in the past have been widely used for various purposes such as furniture, glass, and oil stains, as well as toilets and bathrooms. In particular, for furniture and glass, weak alkaline or alkaline synthetic detergents have been the mainstream.

[0003] As these alkaline range cleaning agents,
For example, JP-A-3-41200 and JP-A-5-50
Japanese Patent No. 3547 discloses a detergent comprising an alkaline substance such as an alkanolamine, an amphoteric detergent surfactant, and an anionic surfactant ammonium salt. When using, dilute with water and use a rag, mop, etc. to wipe off dirt attached to the object to be washed. Two types of cleaning agents for wiping off dirt attached to the surface are widely marketed, and recently, a spray-type cleaning agent using a trigger container has become mainstream.

[0004] The performance requirements of these residential spray cleaners are their detergency to remove various soils in the house and no wiping marks after use. With respect to the detergency, an alkaline volatile substance such as monoethanolamine is used to evaporate the cleaning component after use, so that there is no trace of wiping and high cleaning performance.

[0005] In addition, there is also known a liquid cleaning agent in which a wiping residue is eliminated by blending a specific surfactant with these cleaning agents. For example, JP-A-5-239492 discloses a detergent composition containing a surfactant, a volatile or liquid amine compound and water.
It discloses that a cleaning composition which becomes a hexagonal type or lamellar type liquid crystal at a high concentration of not less than% by weight has an effect of leaving no wiping marks. Further, as a household cleaner composition having no wiping unevenness, for example, JP-A-63-309594 discloses a liquid detergent composition comprising a betaine-type amphoteric surfactant and / or an alkylammonium-type cationic surfactant. Is disclosed.

However, highly volatile alkaline agents such as alkanolamines described in these publications have a problem that they have a strong odor, so that the odor remains during and after use. In addition, the alkaline detergent composition obliges the use of rice cooker gloves and the like, and has a problem with danger when it gets into the skin or eyes.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and has been made in order to solve the above problem. Various types of dirt to be wiped can be cleaned by only wiping operation. A neutral liquid detergent composition that has excellent cleaning performance and is in a neutral region, so that it has no adverse effects on items to be washed, hands and skin, and has no trace of wiping and is suitable for homes or furniture. The purpose is to do.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned conventional problems, and as a result, a specific surfactant and a specific fatty acid have been blended in a specific amount. By using the neutral region, it is possible to demonstrate excellent cleaning performance against various stains in the house, and to obtain a neutral liquid detergent composition of the above-mentioned purpose without any trace of technique. The invention was completed. That is, the neutral liquid detergent composition of the present invention comprises (a) 0.05 to 2% by weight of at least one amphoteric surfactant and (b) a fatty acid having 8 to 18 carbon atoms or a salt thereof 0.1. When the content is less than% by weight, the component (a) / component (b) is in a weight ratio in the range of 50/1 to 6/4, and the pH is adjusted in the range of 6 to 8. .

[0009]

Embodiments of the present invention will be described below in detail. The neutral liquid detergent composition of the present invention (hereinafter simply referred to as “liquid detergent composition”) comprises: (a) at least one amphoteric surfactant of 0.05 to 2% by weight; and (b) carbon number. Less than 0.1% by weight of a fatty acid of 8 to 18 or a salt thereof;
The component (a) / component (b) is 50/1 to 6 / by weight ratio.
4, and the pH is adjusted to a range of 6 to 8.

The liquid detergent composition of the present invention contains, as the component (a), an amphoteric surfactant in order to improve the washing component and to exhibit a point where no trace of wiping remains. Examples of the amphoteric surfactant (a) used in the present invention include:
Examples include betaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants, and amino acid-type amphoteric surfactants. For example, alkylcarbobetaine, alkylsulfobetaine, alkylhydroxysulfobetaine, alkylamidohydroxysulfobetaine, alkylamidoamine-type betaine, alkylimidazoline-type betaine, and the like are preferable, and alkylimidazoline-type betaine is preferable, and alkylimidazoline-type betaine is preferable. It is further preferred to combine tine with the various amphoteric surfactants described above. As a specific example, laurylamidopropyl-N, N-dimethyl-
Betaine acetate, cocoalkylamidopropyl-N, N-
Dimethyl-betaine acetate, lauramidopropyl-
N, N-dimethyl-21-hydroxypropylsulfobetaine, cocoalkylamidopropyl-N, N-dimethylhydroxysulfobetaine, lauramidopropyl-
N, N-dimethylpropylsulfobetaine, cocoalkylamidopropyl-N, N-dimethylpropylsulfobetaine, lauryl-N, N-dimethylacetate betaine, cocoalkyl-N, N-dimethylacetate betaine, 2-lauryl N- Carboxymethyl-N-hydroxyethyl imidazolinium betaine, 2-cocoalkyl-N-carboxymethyl-N-hydroxyethyl imidasonium betaine and the like are preferred. Preferred amphoteric surfactants are 2
-Cocoalkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, 2-cocoalkyl-N-carboxymethyl-N-hydroxyethylimidazolium betaine, and the imidazoline-type amphoteric activator and laurylamidopropyl- N, N-dimethyl-betaine acetate, cocoalkylamidopropyl-N,
A combination using N-dimethyl-betaine acetate in combination is more preferable.

The amount of component (a) used in the present invention is 0.05 to 2% by weight, preferably 0.1 to 1% by weight, based on the total amount of the liquid detergent composition. (A)
If the amount of the component is less than 0.05% by weight, sufficient detergency cannot be obtained, and if it exceeds 2% by weight, there is a problem in wiping residue, which is not preferable.

The detergent composition of the present invention may contain a fatty acid having 8 to 18 carbon atoms or a salt thereof as the component (b) in order to exhibit sliminess to the object to be washed and to exhibit detergency. is necessary. The fatty acid and the salt thereof as the component (b) used in the present invention include a fatty acid having a linear alkyl group or an alkenyl group having an average of 8 to 18 carbon atoms, an alkali metal salt or an ammonium salt thereof, or a mono-, di- or tri- salt. Examples thereof include alkanol-substituted ammonium salts such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, cocoic acid, palm acid, tallow acid or its water-soluble property. At least one kind of salt is used. The present invention is not limited to the above-mentioned various fatty acids, and preferred fatty acids include lauric acid, cocoic acid,
Myristic acid. Preferred water-soluble salts include potassium salts, sodium salts and monoethanolamine salts of the above-mentioned fatty acids. When the fatty acid has less than 8 carbon atoms, an unpleasant odor peculiar to lower fatty acids becomes a problem, and when the fatty acid has more than 18 carbon atoms, there is a problem in solubility, which is not preferable.

The amount of component (b) used in the present invention is preferably less than 0.1% by weight, preferably 0.005 to 0.05% by weight, based on the total amount of the liquid detergent composition. When the amount of the component (b) is 0.1% by weight or more,
The wiping residue remains extremely poor, so that the effects and the like of the present invention for the purpose of cleaning only by the wiping operation cannot be exhibited. The blending amount of the component (b) is an important factor in terms of wettability, detergency and wiping residue in the blending weight ratio with the component (a). Component (a) / (b) that satisfies all of these wetting properties, detergency, and wiping residue.
The weight ratio of the components is 50/1 to 6/4, preferably,
It is desirable to be 20/1 to 2/1. (A) Component /
If the compounding weight ratio of the component (b) is less than 50/1, the wetness of the article to be washed will be reduced, and sufficient washing power will not be exhibited.
If it exceeds 6/4, there will be a problem with the rest of the wipe marks,
Not preferred.

The liquid detergent composition of the present invention preferably further contains a chelating agent as the component (c) in order to exhibit excellent cleaning performance against various soils in dwellings in the neutral region. can do. The chelating agent of the component (c) used in the present invention is not particularly limited as long as it has the ability to chelate metal ions. For example, monocarboxylic acids such as formic acid and acetic acid, oxalic acid, malonic acid, and succinic acid Dicarboxylic acids such as tricarballylic acid, polycarboxylic acids such as propane-1,1,2,3-tetracarboxylic acid, glycolic acid, tartaric acid, and citric acid;
Oxalacetic acid, oxy or ketocarboxylic acids such as gluconic acid, aromatic carboxylic acids such as phthalic acid, amines such as ethylenediamine, N-methylethylenediamine and derivatives thereof, iminodiacetic acid, iminodipropionic acid, phenyliminodiacetic acid, hydroxyethylimino Iminodiacetates such as diacetic acid and mercaptoethyliminodiacetic acid, nitriloacetic acids such as nitrilotriacetic acid and carboxyethyliminodiacetic acid, derivatives such as N, N-ethylenediaminediacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, trimethylenetetraamine Aminopolyacetic acids such as hexaacetic acid, amino acids such as glycine, alanine, glutamic acid, and aspartic acid; and phosphoric acids such as tripolyphosphoric acid, phthalic acid, and 1,1-hydroxyethane-1,2-diphosphonic acid And the like. Of these,
Particularly preferred are polycarboxylic acids, hydroxycarboxylic acids, diphosphonic acids, one or more acids selected from aminocarboxylic acids having two or more nitrogen atoms or salts thereof,
The most preferred chelating agents include oxycarboxylic acids, with citric acid being particularly preferred.

The amount of the chelating agent (c) is preferably 0.05 to 5% by weight, more preferably 0.5 to 2% by weight, based on the total amount of the liquid detergent composition. If the amount of the chelating agent (c) is less than 0.05% by superposition, the detergency will be slightly reduced, and if it exceeds 5% by weight, a problem will remain in wiping marks, which is not preferable.

The pH of the liquid detergent composition of the present invention needs to be adjusted to 6 to 8 with an alkaline agent (pH adjuster). In other words, when the chelating agent of the above component (c) is blended, the chelating agent is an acid, and thus contains the amphoteric surfactant of the above component (a), the fatty acid of the component (b) or a water-soluble salt thereof. The three components are in the acidic region. Therefore, the components (a) and (b) or the components (a) to
By further adding an alkaline agent (pH adjuster) to the component (c), the pH of the liquid detergent composition is finally adjusted, that is, various types of optional components described later and / or water serving as a balance (produced water) Or ion-exchanged water) must be adjusted to 6-8. If the pH is less than 6, it becomes a weakly acidic or acidic region, causing a tingling sensation on hands and skin, causing a problem when directly touching the hands,
If the pH exceeds 8, it becomes a weakly alkaline or alkaline region, and the skin feels slimy on hands and skin, and safety is impaired, which is not preferable. As the alkali adjuster, for example, sodium hydroxide, potassium hydroxide, ammonium hydroxide, monoethanolamine and the like can be appropriately used, and the use of potassium hydroxide is preferable.

The liquid detergent composition of the present invention contains, in addition to the amphoteric surfactant of component (a), the specific fatty acid or salt thereof of component (b), or the chelating agent of component (c), If necessary, other surfactants may be used as long as the effects of the present invention are not impaired. Surfactants that can be used include (1) anionic surfactants, (2) cationic surfactants, and (3) ionic surfactants. (1) Examples of anionic surfactants include alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkylbenzene sulfonates, alkyl sulfonates, α-olefin sulfonates, ether carboxylates, Alkyl phosphate salts and the like can be mentioned, and cations as counter ions thereof include alkali metal ions, alkaline earth metal ions, alkanolamine ions, ammonium ions and the like. (2) Examples of the cationic surfactant include, for example, an alkyltrimethylammonium salt, a dialkyldimethylammonium salt, an alkyldimethylbenzylammonium salt, and the like.The anion as a counter ion of these cationic surfactants is , Halogenion and the like. (3) Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene phenyl ether, fatty acid alkanolamide, alkyldimethylamine oxide, glycerin fatty acid esters,
Sorbitan fatty acid esters and sucrose fatty acid esters are exemplified. The amount of these surfactants is 0.01 to 2% by weight in the total amount of the liquid detergent composition, preferably,
0.1-1% by weight is preferred.

The liquid detergent composition of the present invention may further contain a lower alcohol. Specifically, methanol, ethanol, propanol, isopropanol, butanol, and isobutanol can be blended. Among them, ethanol is preferable, and ethanol is fermentation or synthetic ethanol.
In addition, general denatured alcohols are also used, such as methanol denatured, benzol denatured, triol denatured, methyl ethyl ketone denatured, denatonium benzoate denatured, and fragrance denatured general denatured alcohols, ethylene glycol monoethyl ether, gloloform, diethyl carbonate, ethyl acetate, and propion. Ethyl acid, ethyl butyrate, hexane, industrial ethyl ether, geraniol, 8-acetylated sucrose, phenylethyl ether, diethyl phthalate, brucine, linalool acetate, flavor H-No. 4, flavor H-
No.6, flavor H-No.9, flavor H-No.11, flavor H-No.1, flavor H-No.3, flavor H-No.10,
Flavor H-No.12, Flavor H-No.13, Flavor T-
No.100, Flavor T-No.101, Flavor T-No.102, Flavor T-No.103, Flavor T-No.107, Flavor S-
No.201, Hexane, linalool, aqueous solution of alkylbenzene sulfonate, vinyl acetate monomer, heptane, isopropyl alcohol, selective denatured alcohol such as butanol denatured, ethyl acrylate, benzyl acetate, methanol / 10% denatonium benzoate alcohol Solution, flavor H-No. 14. Seed vinegar and water (acid content 10% or more,
Alcohol 15% or less), high acidity brewed vinegar (acid content 10%)
Above), Flavor T-No.3, Flavor T-No.4, Flavor H-No.2, Flavor T-No104, Flavor T-No.10
5. Flavor T-No. 106, methanol / formalin / rhodamine B, methyl ethyl ketone / 8 acetylated sucrose / isopropyl alcohol, butyl valaoxybenzoate, white lac or purified denatured alcohol such as purified shellac or shellac. The mixing amount of these lower alcohols is 3 to 20% by weight based on the total amount of the liquid detergent composition.
Can be blended. If the blending amount of the lower alcohol is less than 3% by weight, problems are caused in microbial stability and low-temperature stability.

The liquid detergent composition of the present invention may optionally further contain a hydrophilic solvent, a fragrance, a preservative and the like. As the hydrophilic solvent, an alkylene glycol ether is preferred. Particularly preferred examples include ethyl carbitol, acetyl carbitol, butyl carbitol, acetyl butyl carbitol, dimethyl carbitol, diethyl carbitol, and methyl ethyl carbitol. Since the amount of the hydrophilic solvent may be affected by the object to be washed, it can be added if it is necessary to further improve the washing performance. The compounding amount is 0 to 10% by weight, preferably 0 to 5% by weight based on the total amount of the liquid detergent composition.

The fragrance component which can be used in the present invention is not particularly limited, but specific examples thereof include hydrocarbons such as aliphatic hydrocarbons, terpene hydrocarbons and aromatic hydrocarbons, and fatty acids. Alcohols such as aliphatic alcohols, terpene alcohols, aromatic alcohols, ethers such as aliphatic ethers and aromatic ethers, aliphatic oxides, oxides such as terpene oxides, aliphatic aldehydes, terpene aldehydes, hydrogenated aromatics Aldehydes such as aromatic aldehydes, thioaldehydes, aromatic aldehydes, aliphatic ketones, terpene ketones, hydrogenated aromatic ketones, aliphatic cyclic ketones, non-benzene aromatic ketones, ketones such as aromatic ketones, acetals, Ketal, phenols, phenol ethers, fatty acids,
Lactones such as terpene carboxylic acids, hydrogenated aromatic carboxylic acids, acids such as aromatic carboxylic acids, acid amides, aliphatic lactones, macrocyclic lactones, terpene lactones, hydrogenated aromatic lactones, aromatic lactones, Aliphatic esters, furan carboxylic esters, aliphatic cyclic carboxylic esters, cyclohexyl carboxylic esters, terpene carboxylic esters, aromatic carboxylic esters and the like, nitro musks, nitriles,
Synthetic fragrances such as amines, pyridines, quinolines, pyrroles, nitrogen-containing compounds such as indole and the like, and natural fragrances from plants can be mentioned. The liquid detergent composition of the present invention has a pH of 6 to 8, and incorporates the above various fragrances in consideration of the superior odor in comparison with the alkaline detergent composition having an amine odor. be able to. The compounding amount of the fragrance is preferably one to two or more of them, and is preferably 0% by weight to 0.5% by weight based on the total amount of the liquid detergent composition of the present invention.

The preservatives that can be used in the present invention are not particularly limited, but include sodium benzoate, isopropyl paraoxybenzoate, isopropyl valaoxybenzoate, ethyl paraoxybenzoate, methyl paraoxybenzoate, and paraoxybenzoate. Benzoic acid preservatives such as butyl acid, propyl paraoxybenzoate, sorbic acid, sorbic acid preservatives such as potassium sorbate, dehydroacetic acids, propionic acids, diphenyls, diphenyls such as orthophenylphenol and sodium, Thiabenzol, imazalil and the like can be mentioned. The amount of the preservative is from 0% by weight to the total amount of the liquid detergent composition.
0.5% by weight is incorporated.

Further, in addition to the above components, the liquid detergent composition of the present invention may further contain, as optional components, a hydrotrope, an ultraviolet absorber, a coloring agent, a thickener, and the like. The compounds used for these optional components may be in any form as long as they are generally used in detergents, and are not particularly limited.

The liquid detergent composition of the present invention is prepared by the above-mentioned components (a) and (b) or components (a) to (c) according to a conventional method.
It can be produced by mixing the components and the above-mentioned various components to be blended if necessary by a conventional method.
In addition, the method of use is to spray directly on the item to be washed by spraying with a squeeze bottle, trigger, dispenser, etc., and wipe off dirt with a wiping tool such as a rag, or spray on a rag etc. Is preferably wiped off. Further, the liquid detergent composition of the present invention is impregnated into a non-woven cloth,
It can also be used as a liquid detergent composition for a wet tissue type.

[0024]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

Examples 1 to 5 and Comparative Examples 1 to 5 Liquid detergent compositions were prepared according to the composition shown in Table 1 below.
With respect to each of the obtained liquid detergents, detergency and wiping residue were evaluated by the following evaluation methods. The evaluation results are shown in Table 1 below.

(1) Detergency Evaluation Method A metal blind which had been left unwashed for 5 years in a window of a smoking room was cut off and used as a dirty plate (20 × 10 cm) of stain. After the liquid detergent composition (0.2 g of undiluted solution) was applied to this dirty board, a load of 200 gr was applied to the cotton knitted fabric, and the cotton fabric was reciprocated twice, and the state of the stain was visually determined according to the following evaluation criteria. Evaluation criteria: A: Very good stain removal. ：: Good stain removal. Δ: There is unevenness in dirt removal. X: Almost no dirt is removed.

(2) Evaluation method of the residue after wiping The liquid detergent composition (stock solution 0. 10 cm) was applied to the mirror surface (20 x 10 cm).
2g), and reciprocate twice with a dry cotton knitted cloth.
The wiping residue on the surface after wiping the liquid detergent composition was visually judged according to the following evaluation criteria. Evaluation criteria: ：: No residue is observed after wiping. ：: Almost no residue after wiping. Δ: There is some residue after wiping. X: The residue after wiping is very large.

[0028]

[Table 1]

As is clear from the results shown in Table 1, Examples 1 to 5 of the present invention have excellent detergency and have less wiping marks than Comparative Examples 1 to 5 which are out of the range of the present invention. Turned out not to be.

[0030]

According to the present invention, various types of dirt to be wiped and cleaned have excellent cleaning performance by only wiping operation, and are in a neutral region. Provided is a liquid detergent composition having no adverse effects on the skin and having no trace of wiping.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4H003 AB03 AB44 AD04 BA12 BA20 BA21 DA04 DA05 DA07 DA15 EB08 ED02 ED28 FA01 FA21 FA28

Claims (1)

[Claims] (1) 0.05 to 2% by weight of at least one of amphoteric surfactants and (b) less than 0.1% by weight of a fatty acid having 8 to 18 carbon atoms or a salt thereof, wherein (a) component/
(B) the component is in the range of 50/1 to 6/4 by weight,
A neutral liquid detergent composition characterized in that the pH is adjusted to a range of 6 to 8.