JPH0450959B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to cleaning agents for use in cleaning hard surfaces. More specifically, the present invention relates to hard surface cleaning agents containing 1,3-dialkyl-2-imidazolidinones. Conventional technology Dirt on hard surfaces made of glass, metal, ceramics, synthetic resins, etc. such as ventilation fans, ovens, bathtubs, tiles, toilet bowls, etc. is caused by oils, fats, and various organic substances that are altered by heat and air and turned into resin. There are some that are stuck to the surface, and some that have become a resin coating from paint or ink. Since neutral detergents such as kitchen detergents have weak detergent power, it has been difficult to remove stains firmly adhered to hard surfaces. Therefore, in order to remove such stains from hard surfaces, there are methods to increase the cleaning power by adding acid or alkyl substances to the cleaning agent to make the pH strong alkaline or acidic, or using ethylene glycol ether solvents, Methods of adding solvents such as acetone and chlorinated solvents have been used. Among the conventional methods, adding sodium hydroxide or hydrochloric acid to make the cleaning agent strongly alkaline or acidic requires wearing rubber gloves because the cleaning agent irritates the skin, and may be difficult to clean depending on the type of hard surface. The disadvantage is that the rims are corroded. In addition, cleaning agents containing ethylene glycol ether solvents, acetone, xylene, chlorine solvents, etc. are available to some extent, but some solvents are highly toxic to the human body, highly volatile, and have high flash points. Some of them have a low value of 100%, and cannot be said to be preferable for use. In particular, detergents containing ethylene glycol ether-based water-soluble solvents have a strong pungent odor, so you may be concerned about the odor while using the detergent, and furthermore, when perfumed, the desired scent may not be obtained. It was hot. Problems to be Solved by the Invention It is an object of the present invention to provide a hard surface cleaning agent that has strong cleaning power and is low in toxicity, low irritation, and low odor. Means for Solving the Problems The above problems are solved by using a specific cyclic urea compound of the present invention. That is, the present invention provides general formula () (In the formula, R ₁ and R ₂ represent an alkyl group having 1 to 3 carbon atoms, which are the same or different from each other.) The present invention relates to a hard surface cleaning agent characterized by: 1,3- used in the hard surface cleaning agent of the present invention
As dialkyl-2-imidazolidinone,
1,3-dimethyl-2-imidazolidinone, 1,
3-diethyl-2-imidazolidinone, 1,3-
Di-n-propyl-2-imidazolidinone, 1,
3-diisopropyl-2-imidazolidinone can be mentioned, but in terms of detergency etc., 1,3-
Dimethyl-2-imidazolidinone is preferred. The 1,3-dialkyl-2-imidazolidinone used in the present invention can be mixed with water in any proportion, and can be mixed with a variety of substances such as acetone, methyl ethyl ketone, phenylethyl alcohol, diethylamine, methylene chloride, kerosene, and turpentine oil. It has good compatibility with organic solvents, surfactants, inorganic substances, etc., and dissolves various organic compounds and polymeric compounds, so it has an extremely wide range of applications as a hard surface cleaner. For example, 1,3-
It may be wiped off with dialkyl-2-imidazolidinone as it is or diluted with a lower alcohol such as ethanol. For stains on household stoves, ventilation fans, bathtubs, etc., it is preferable to use it in combination with a surfactant, a water-soluble polymer compound, and various auxiliary agents like a normal hard surface cleaner. Surfactants used for this purpose include the following anionic surfactants, nonionic surfactants, and amphoteric surfactants. These include fatty acid soaps, higher alcohol sulfate ester salts, polyoxyethylene higher alcohol sulfate ester salts, higher alcohol phosphate esters and their salts, polyoxyethylene higher alcohol phosphate esters and their salts, polyoxyethylene higher fatty acid phosphates, Acid esters and their salts, sulfonated higher fatty acid salts, sulfonated higher fatty acid alcohol ester salts, higher alcohol sulfosuccinate ester salts, isethionic acid higher fatty acid ester salts, α
-Higher fatty acids and alkylolamines such as sulfohigher alcohol acetate salts, alkylbenzene sulfonates, α-olefin sulfonates, lauric acid diethanolamide, stearic acid diethanolamide, lauric acid monoethanolamide, and stearic acid monoethanolamide condensates and their ethylene oxide adducts, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene higher fatty acid monoethanolamide phosphates, N-long chain acyl acidic amino acid salts, N-long chain acyl sarcosine salts, N-long chain acylamino acid salts such as N-long chain acyl-N-alkyl-β-alanine salts, N-acyl peptides, higher alkylaminopropionates such as lauryl aminopropionic acid, lauryl iminodiacetates, etc. Higher alkyliminodiacetates, higher alkyldimethylpetaines, higher alkyldihydroxyethylpetaines, N-alkyloyl-N'-(2-hydroxyethyl)-N'-carboxymethylethylenediamine acids, N-alkyloyl-N-(2 Examples include, but are not limited to, -hydroxyethyl)-N'.N'-picarboxymethylethylenediamine amide compounds. The hard surface cleaner of the present invention contains adjuvants that are included in ordinary liquid cleaners, such as fragrances, colorants,
Thickeners, bactericides, solubilizers, builders, and the like can be added to the extent that they do not interfere with the effects of the present invention. 1,3-dialkyl-2- used in the present invention
The amount of imidazolidinone blended is not particularly limited, but is preferably at least 0.5% by weight. For cleaning surfaces of synthetic resins, 1,3-dialkyl-2-imidazolidinone dissolves synthetic resins, so 20% by weight or less is suitable. When the 1,3-dialkyl-2-imidazolidinone of the present invention was subjected to a primary skin irritation test, almost no primary skin irritation was observed, as was the case with physiological saline. In addition, the acute toxicity (LD ₅₀ ) of 1,3-dimethyl-2-imidazolidinone in mice
is 2840mg/Kg, indicating low toxicity. Since 1,3-dialkyl-2-imidazolidinone is stable against acids and alkalis, the hard surface cleaning agent of the present invention can be adjusted to any pH.
Weak acidity or weak alkalinity are preferred in terms of less skin irritation. The method of use may be any method such as liquid, cream, aerosol, or pump type. Hard surfaces to which the hard surface cleaning agent of the present invention is applied include those made of glass, ceramics, metals, synthetic resins, enamel, etc. For example, furniture,
desks, walls, window glass, tiles, floors, ventilation fans, ranges, ovens, lighting equipment, refrigerators, bathtubs, toilets,
Examples include various machines, automobile engines, etc., but are not limited to these. Function: In the hard surface cleaning agent of the present invention, the 1,3-dialkyl-2-imidazolidinone dissolves various types of stains fixed on hard surfaces, and thus exhibits excellent cleaning power. Examples Examples 1 to 6 Comparative Example 1 Cleaning compositions having the following formulations were prepared and their cleaning powers were compared.

[Table] From the above evaluation, it can be seen that the cleaning agents of each example have excellent cleaning power. Examples 7 and 8 Comparative Examples 2 to 4 Cleaning compositions having the formulations shown in Table 2 were prepared, and the detergency and odor intensity were determined by the method in Example 1.

[Table] The product of the present invention had a cleaning power equal to or higher than that of commonly used monoethers of ethylene glycol or diethylene glycol, and had a weak odor. Example 9 1,3-dimethyl-2-imidazolidinone
10% by weight - Polyoxyethylene (10) nonyl phenyl ether 3 - Monoethanolamine 5 - Potassium pyrophosphate 4 - Water 78 An aqueous cleaning agent for gas ranges and ventilation fans having the above composition was prepared. This cleaning agent exhibited excellent cleaning effects with little odor. Example 10 - Citric acid 40.0% by weight - Gluconic acid 10.0 - Secondary alcohol (carbon number 12-14) ethoxylate (9 mol) 2.0 - 1,3-diethyl-2-imidazolidinone
2.0 /Water 46.0 An aluminum cleaner with the above formulation was prepared. This product had little odor and had excellent detergency. Example 11 - 1,3-dimethyl-2-imidazolidinone
10.0% by weight・1,3-diisopropyl-2-imidazolidinone 4.0・Oleic acid 16.0・Triethanolamine 12.0・Water 58.0 A tile cleaning agent having the above composition was prepared. This product had an excellent cleaning effect. Example 12 - Secondary alcohol (carbon number 12-14) ethoxylate (9 mol) 1.0% by weight - 1,3-dimethyl-2-imidazolidinone
5.0・Potassium pyrophosphate 2.5・Water 91.5 The above-mentioned composition was aerosolized with isobutane propellant to prepare a hard surface spray cleaner. This product had excellent detergency. Example 13 - 1,3-dimethyl-2-imidazolidinone
50% by weight ・Methylene chloride 47 ・Secondary alcohol (12 to 14 carbon atoms) ethoxylate (8 mol) 2. Methyl cellulose 1 A paint remover having the above formulation was prepared. This product had an excellent paint removal effect. Effects of the Invention The present invention has the following excellent effects. (1) It has cleaning power equal to or greater than conventional hard surface cleaners containing glycol ether-based solvents. (2) Hypoallergenic and low toxicity. (3) Low odor.

Claims (1)

[Claims] 1 General formula () [However, in the formula, R ₁ and R ₂ represent alkyl groups having 1 to 3 carbon atoms, which are the same or different from each other. ]
A hard surface cleaning agent comprising at least one 1,3-dialkyl-2-imidazolidinone represented by: 2. The cleaning agent according to claim 1, wherein the compound of general formula () is 1,3-dimethyl-2-imidazolidinone.