Cleaning agent composition

Abstract

To provide a cleaning agent composition which contains a tertiary amine and can suppress discoloration over time.SOLUTION: This cleaning agent composition contains a chelating agent together with a tertiary amine, so that the cleaning agent composition can suppress discoloration over time.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a cleaning composition containing a tertiary amine compound and capable of suppressing discoloration occurring over time.

Background Art

[0002] Conventionally, various cleaning compositions have been used to remove dirt adhering to hard surfaces such as toilet bowls and create a hygienic environment. For example, as a cleaning composition for a flush toilet, a cleaning composition designed to elute the cleaning agent into the flush water by being installed in the handwashing section, the surface of the toilet bowl, the water storage tank, etc. of the flush toilet is used.

[0003] Conventionally, in cleaning compositions, various components such as surfactants and disinfectants are blended to improve the cleaning effect and the disinfection effect. In addition, a tertiary amine may be blended in the cleaning composition to improve functionality (see, for example, Patent Document 1), and furthermore, even if not intentionally blended, a tertiary amine may be unavoidably contained due to the blending of other components. However, conventionally, sufficient consideration has not been given to the storage stability of cleaning compositions containing a tertiary amine.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] When the present inventor examined the storage stability of a cleaning composition containing a tertiary amine, it was found that there is a specific problem that discoloration (yellowing) occurs over time. Therefore, an object of the present invention is to provide a cleaning composition containing a tertiary amine and capable of suppressing discoloration occurring over time.

Means for Solving the Problems

[0006] The inventor conducted intensive studies to solve the above problems and found that by incorporating a chelating agent in a cleaning composition containing a tertiary amine, discoloration that occurs over time can be suppressed. The present invention has been completed through further studies based on such findings.

[0007] That is, the present invention provides inventions in the following aspects. Item 1. A cleaning composition comprising a tertiary amine and a chelating agent. Item 2. The cleaning composition according to Item 1, wherein the tertiary amine is a tertiary amine containing two hydrocarbon groups having 1 to 5 carbon atoms and one hydrocarbon group having 6 to 20 carbon atoms. Item 3. The cleaning composition according to Item 1 or 2, wherein the tertiary amine is at least one selected from the group consisting of dimethyloctylamine, dimethyldecylamine, dimethyldodecylamine, dimethyltetradecylamine, dimethylhexadecylamine, and dimethyloctadecylamine. Item 4. The cleaning composition according to any one of Items 1 to 3, wherein the chelating agent is an aminocarboxylic acid-based chelating agent and / or a phosphonic acid-based chelating agent. Item 5. The cleaning composition according to any one of Items 1 to 4, wherein the chelating agent is at least one selected from the group consisting of ethylenediaminetetraacetic acid, nitrilotriacetic acid, and hydroxyethylidenediphosphonic acid. Item 6. The cleaning composition according to any one of Items 1 to 5, wherein the tertiary amine is contained in an amount of 0.005 to 0.5% by weight. Item 7. A method for suppressing discoloration of a cleaning composition containing a tertiary amine, comprising a method for suppressing discoloration, wherein a tertiary amine and a chelating agent are contained in the cleaning composition.

Advantages of the Invention

[0008] The cleaning composition of the present invention can suppress discoloration that occurs over time by containing a combination of a tertiary amine and a chelating agent, and thus has excellent stability and can maintain a good appearance.

Modes for Carrying Out the Invention

[0009] 1. Detergent composition The cleaning composition of the present invention is characterized by containing a tertiary amine and a chelating agent. Hereinafter, the cleaning composition of the present invention will be described in detail.

[0010] [Tertiary Amine] The cleaning composition of the present invention contains a tertiary amine. Preferred examples of the tertiary amine contained in the cleaning composition of the present invention include compounds in which three hydrogen atoms of ammonia are substituted with hydrocarbon groups.

[0011] The tertiary amine contained in the cleaning composition of the present invention may be intentionally blended or may be blended unintentionally. For example, benzylalkyl (C8-C18) dimethylammonium salts may inevitably contain tertiary amines such as alkyl (C8-C18) dimethyl as impurities. However, even if the cleaning composition inevitably contains a tertiary amine as an impurity by blending benzylalkyl (C8-C18) dimethylammonium salts, the present invention is applicable.

[0012] Specifically, as the tertiary amine contained in the cleaning composition of the present invention, a tertiary amine containing two hydrocarbon groups having 1 to 5 carbon atoms and one hydrocarbon group having 6 to 20 carbon atoms, preferably a tertiary amine containing two hydrocarbon groups having 1 to 3 carbon atoms and one hydrocarbon group having 8 to 18 carbon atoms, more preferably a tertiary amine containing two methyl groups and one hydrocarbon group having 10 to 16 carbon atoms, and still more preferably a tertiary amine containing two methyl groups and one hydrocarbon group having 12 to 14 carbon atoms can be mentioned. When such a tertiary amine is contained in the cleaning composition, discoloration over time tends to occur significantly in the prior art. However, according to the present invention, even if such a tertiary amine is contained, discoloration over time can be effectively suppressed.

[0013] As the tertiary amine contained in the detergent composition of the present invention, more specifically, dimethyloctylamine, dimethyldecylamine, dimethyldodecylamine, dimethyltetradecylamine, dimethylhexadecylamine, dimethyloctadecylamine; preferably dimethyldecylamine, dimethyldodecylamine, dimethyltetradecylamine, dimethylhexadecylamine; more preferably dimethyldodecylamine, dimethyltetradecylamine may be mentioned.

[0014] In the detergent composition of the present invention, these tertiary amines may be contained alone or in combination of two or more.

[0015] As the content of the tertiary amine in the detergent composition of the present invention, for example, 0.001 to 1% by weight may be mentioned. From the viewpoint of more effectively suppressing discoloration over time, as the content of the tertiary amine in the detergent composition of the present invention, preferably 0.005 to 0.5% by weight, more preferably 0.025 to 0.25% by weight, still more preferably 0.05 to 0.1% by weight may be mentioned.

[0016] [Chelating agent] By including a chelating agent in the detergent composition of the present invention, it is possible to suppress discoloration over time caused by the tertiary amine.

[0017] As the chelating agent used in the present invention, any of aminocarboxylic acid-based chelating agents, phosphonic acid-based chelating agents, polyvalent carboxylic acid-based chelating agents, etc. may be used.

[0018] Examples of aminocarboxylic acid chelating agents include, specifically, ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), dihydroxyethylglycine (DEG), N-(2-hydroxyethyl)iminodiacetic acid (HEIDA), hydroxyethylethylenediaminetetraacetic acid (HEDTA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethylethylenediaminetriacetic acid (HEDTA), methylglycinediacetic acid (MGDA), glutamic acid diacetic acid (GLDA), aspartic acid diacetic acid (ASDA), ethylenediamine succinic acid (EDDS), hydroxyiminodisuccinic acid (HIDS), iminodisuccinic acid (IDS), and salts thereof (such as alkali metal salts like sodium salts).

[0019] Examples of phosphonic acid chelating agents include, specifically, hydroxyethylidene diphosphonic acid (HEDP), nitrilotris(methylenephosphonic acid) (NTMP), phosphonobutane tricarboxylic acid (PBTC), ethylenediamine tetramethylenephosphonic acid (EDTMP), and salts thereof (such as alkali metal salts like sodium salts).

[0020] Examples of polycarboxylic acid chelating agents include, specifically, acetic acid, adipic acid, monochloroacetic acid, oxalic acid, succinic acid, oxydisuccinic acid, carboxymethyl succinic acid, carboxymethyl oxysuccinic acid, glycolic acid, diglycolic acid, lactic acid, tartaric acid, carboxymethyl tartaric acid, citric acid, malic acid, gluconic acid, and salts thereof (such as alkali metal salts like sodium salts).

[0021] Among these chelating agents, from the viewpoint of more effectively suppressing discoloration over time, preferably, aminocarboxylic acid chelating agents and phosphonic acid chelating agents are used, and more preferably, EDTA, NTA, HEDP, and salts thereof are used.

[0022] In the detergent composition of the present invention, these chelating agents may be used alone or in combination of two or more.

[0023] The content of the chelating agent in the detergent composition of the present invention is, for example, 0.00001 to 5% by weight. From the viewpoint of more effectively suppressing discoloration over time, the content of the chelating agent in the detergent composition of the present invention is preferably 0.0005 to 1% by weight, more preferably 0.001 to 0.1% by weight.

[0024] In the detergent composition of the present invention, the ratio of the tertiary amine to the chelating agent is determined according to the content of each of the above-described components. From the viewpoint of more effectively suppressing discoloration that occurs over time, for example, per 100 parts by weight of the tertiary amine, the chelating agent is 0.01 to 10,000 parts by weight, preferably 0.1 to 1,000 parts by weight, and more preferably 1 to 100 parts by weight.

[0025] [Surfactant] The detergent composition of the present invention preferably contains a surfactant. The type of surfactant used in the present invention is not particularly limited, and any of nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants may be used.

[0026] Examples of nonionic surfactants include polyoxyalkylene alkyl ethers (polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers), polyoxyethylene glycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyglycerin fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyethylene glycol fatty acid esters, propylene glycol monofatty acid esters, alkyl polyhydric alcohol ethers, polyoxyalkylene block polymers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl amines, fatty acid alkanolamides, acylmethyl glucamides, polyoxyethylene acetylene glycols, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene phytosterol, polyoxyethylene cholestanol, polyoxyethylene nonylphenyl formaldehyde condensates, alkyl glucosides, and the like.

[0027] Examples of cationic surfactants include amidoamine salt type surfactants such as diethylaminoethylamide glutamate stearate and lanolin fatty acid diethylaminoethylamide glutamate; amide guanidine salt type surfactants such as amide guanidine hydrochloride laurate, and the like.

[0028] Examples of anionic surfactants include alkylbenzene sulfonates, alkenyl sulfonates (α-olefin sulfonates), alkyl sulfacetates, alkyl sulfates, alkane sulfonates, higher fatty acid salts, alkyl ether carboxylates, N-acyl amino acid salts, higher fatty acid amide sulfonates, polyoxyethylene fatty acid phosphate esters, and the like.

[0029] Examples of the amphoteric surfactant include betaine-type amphoteric surfactants such as alkyl dimethylaminoacetic acid betaine; amino acid-type amphoteric surfactants; amine oxide-type amphoteric surfactants and the like.

[0030] These surfactants may be used alone or in combination of two or more.

[0031] Among the surfactants, preferably nonionic surfactants, more preferably polyoxyalkylene alkyl ethers are mentioned.

[0032] Regarding the content of the surfactant in the detergent composition of the present invention, it may be appropriately set according to the type of the surfactant used, the dilution ratio during use, etc. For example, 10 to 60% by weight, preferably 20 to 55% by weight, more preferably 30 to 50% by weight are mentioned.

[0033] [Other components] In the detergent composition of the present invention, within a range not interfering with the effects of the present invention, further, if necessary, additives such as coloring agents (colored pigments, dyes), enzymes, bactericides, chelating agents, deodorants, emulsifying solubilizers for oily components, extenders, solubility regulators, bleaching agents, water repellents, hydrophilic agents, fillers, pH adjusters, thickeners, gelling agents, moldability improvers, buffers, clouding agents, defoamers, lubricants, coating agents and the like may be included.

[0034] [Form] The form of the detergent composition of the present invention is not particularly limited and may be appropriately set according to its use. For example, liquid form, solid form (powder form, tablet form, etc.), semi-solid form (paste form, gel form, etc.), aerosol form and the like are mentioned. Among these forms, preferably liquid form, semi-solid form, more preferably liquid form are mentioned.

[0035] [Object to be cleaned] The object to be cleaned by the cleaning composition of the present invention is not particularly limited as long as it requires disinfection and stain removal. For example, hard surfaces that can come into contact with water, such as toilets (toilet bowls, toilet floors), bathrooms, kitchens, kitchens, drain pipes, water storage facilities (pools, artificial ponds, etc.), can be mentioned. Among these, the toilet bowl of a flush toilet is an object to be cleaned that is prone to stains derived from microorganisms such as blackening and requires disinfection. Therefore, the cleaning composition of the present invention is suitable as a cleaner for the toilet bowl of a flush toilet.

[0036] When the cleaning composition of the present invention is used for cleaning the toilet bowl of a flush toilet, the cleaning composition of the present invention may be applied directly to the toilet bowl for cleaning, but it is preferably diluted with flush water and used for cleaning the toilet bowl using the flush water during the flush of the flush toilet. When the cleaning composition of the present invention is used for cleaning the toilet bowl of a flush toilet after being diluted with flush water, the dilution ratio is not particularly limited. For example, it can be about 10,000 to 1,000,000 times, preferably about 20,000 to 500,000 times, and more preferably about 30,000 to 250,000 times.

[0037] When the cleaning composition of the present invention is diluted with flush water and used for cleaning a toilet bowl of a flush toilet, the cleaning composition of the present invention may be any of a cleaning agent for an on-tank of a flush toilet, a cleaning agent for an in-tank of a flush toilet, a cleaning agent for a rim part of a flush toilet, a cleaning agent used by attaching it to the toilet surface, etc. The cleaning agent for an on-tank of a flush toilet is installed on the hand-washing part of the flush toilet and used. When the cleaning composition comes into contact with the flush water for cleaning supplied to the hand-washing part in a container containing the cleaning composition, the cleaning composition flows out of the container, and the flush water in which the cleaning composition is dissolved is discharged into the toilet bowl to clean the toilet bowl. The cleaning agent for an in-tank of a flush toilet is put into the water storage tank of the flush toilet and used. When it comes into contact with the flush water for cleaning in the water storage tank, the cleaning composition elutes, and the flush water in which the cleaning composition is dissolved is discharged into the toilet bowl at the time of flushing to clean the toilet bowl. The cleaning agent for a rim part of a flush toilet is attached to the rim part of the flush toilet and used. When the flush water discharged into the toilet comes into contact with a container containing the cleaning composition, the cleaning composition flows out of the container, and the flush water in which the cleaning composition is dissolved is discharged into the toilet bowl to clean the toilet bowl. The cleaning agent used by attaching it to the toilet surface is installed in a state of being attached to the toilet surface, and when the flush water discharged into the toilet at the time of flushing comes into contact with it, the cleaning composition elutes into the flush water to clean the toilet bowl. When the cleaning composition of the present invention is used as a cleaning agent used by attaching it to the toilet surface, in order to have adhesiveness to the toilet surface, the cleaning composition of the present invention is preferably in a gel state.

[0038] [Container for containing] In addition, since the detergent composition of the present invention can suppress discoloration (yellowing) over time, even when it is housed in a container having a transparent housing portion (a housing portion for housing the detergent composition) through which the interior can be visually recognized, it has the advantage of being stably maintained without impairing the appearance. Therefore, as a suitable example of a container for housing the detergent composition of the present invention, a container having a transparent housing portion can be mentioned. Here, "transparent" includes both colorless transparent and colored transparent.

[0039] In addition, a container having a blue transparent housing portion is considered to be an unsuitable container for housing a detergent composition that easily changes color over time and is likely to turn yellow over time because it is easy to distinguish a change in color tone when the detergent composition housed in the housing portion turns yellow. However, in the detergent composition of the present invention, since discoloration (yellowing) over time can be suppressed, even when it is housed in a container having a blue transparent housing portion, the appearance can be stably maintained. Therefore, as a suitable example of a container for housing the detergent composition of the present invention, a container having a blue transparent housing portion can be mentioned.

[0040] 2. Method for suppressing discoloration The present invention further provides a method for suppressing discoloration of a detergent composition containing a tertiary amine. Specifically, the method is carried out by containing a tertiary amine and a chelating agent in the detergent composition.

[0041] Regarding the type and content of the tertiary amine used in the method, the type and content of the chelating agent, the type and content of other components that can be formulated in the detergent composition, the form of the detergent composition, the object to be cleaned, etc., they are as described in the column of "1. Detergent Composition" above.

Examples

[0042] Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

[0043] Test Example 1 A liquid detergent composition having the composition shown in Table 1 was prepared. Immediately after preparation, all the detergent compositions were colorless and transparent. 60 ml of each detergent composition immediately after preparation was placed in a 75-ml glass container and stored at 60 °C for 2 weeks under light-shielded conditions. After 2 weeks of storage, the appearance of the detergent composition was observed, and the discoloration inhibition effect was evaluated according to the following criteria. <Criteria for judging the discoloration inhibition effect> ◎: No yellowing at all. ○: Almost no yellowing. △: Slightly yellowing. ×: Obvious yellowing is observed.

[0044] The results are shown in Table 1. As a result, in the detergent compositions containing a tertiary amine (dimethyl dodecylamine or dimethyl tetradecylamine) and no chelating agent, obvious yellowing was observed after storage at 60 °C for 2 weeks (Comparative Examples 1 to 4). On the other hand, in the detergent compositions containing a chelating agent (HEDP, EDTA or NTA) together with a tertiary amine (dimethyl dodecylamine or dimethyl tetradecylamine), the yellowing after storage at 60 °C for 2 weeks was sufficiently suppressed, and they had excellent storage stability. That is, from these results, it became clear that in the detergent composition, discoloration can be suppressed by using a combination of a tertiary amine and a chelating agent.

[0045]

Table 1

Claims

1. A cleaning composition comprising a tertiary amine and a chelating agent.

2. 2. The cleaning composition according to claim 1, wherein the tertiary amine is a tertiary amine containing two hydrocarbon groups having 1 to 5 carbon atoms and one hydrocarbon group having 6 to 20 carbon atoms.

3. 3. The cleaning composition according to claim 1, wherein the tertiary amine is at least one selected from the group consisting of dimethyloctylamine, dimethyldecylamine, dimethyldodecylamine, dimethyltetradecylamine, dimethylhexadecylamine, and dimethyloctadecylamine.

4. The cleaning composition according to any one of claims 1 to 3, wherein the chelating agent is an aminocarboxylic acid chelating agent and / or a phosphonic acid chelating agent.

5. 5. The cleaning composition according to claim 1, wherein the chelating agent is at least one selected from the group consisting of ethylenediaminetetraacetic acid, nitrilotriacetic acid, and hydroxyethylidenediphosphonic acid.

6. The cleaning composition according to any one of claims 1 to 5, wherein the tertiary amine is contained in an amount of 0.005 to 0.5% by weight.

7. A method for inhibiting discoloration of a cleaning composition comprising a tertiary amine, comprising: A method for inhibiting discoloration by incorporating a tertiary amine and a chelating agent into a cleaning composition.

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