Detergent composition for hard articles
Patent Information
- Application Number
- JP2022070097
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2021-04-22
- Filing Date
- 2022-04-21
- Publication Date
- 2025-03-12
AI Technical Summary
Existing detergents struggle to effectively remove denatured oil stains from tableware and cooking utensils due to their low foaming properties and insufficient detergency, leading to reduced washing efficiency and increased foam breaking.
A cleaning composition comprising polyoxyalkylenealkyl or alkenylamine with specific carbon atom and oxyalkylene group ranges, combined with nonionic and anionic surfactants and a solvent, maintains high detergency and foam sustainability by balancing hydrophobicity and hydrophilicity, enhancing adsorption and aggregation properties.
The composition achieves excellent detergency against oil stains while maintaining stable foam, effectively cleaning both highly and lowly denatured oil stains on hard articles.
Abstract
Description
Technical Field
[0001] The present invention relates to a cleaning agent composition for hard articles and a method for cleaning hard articles.
Background Art
[0002] Generally, as cleaning agents used around kitchens such as ranges, ovens, walls and floors around ranges, and ventilation fans, and cleaning agents used for food processing equipment, various cleaning agents containing surfactants, solvents, alkali agents, etc. are used to remove various stains such as food-derived stains and stains derived from ingredients used in cooking.
[0003] Patent Document 1 discloses a liquid cleaning agent composition containing (a) an amine oxide type surfactant having a hydrocarbon group with 7 to 18 carbon atoms, (b) a nonionic surfactant with an HLB of 1 to 10, and (c) a compound represented by a specific general formula (c1) having an alkyl group with 1 to 5 carbon atoms under predetermined conditions. Patent Document 2 discloses a cleaning agent composition containing (A) an anionic surfactant, (B) a nonionic surfactant, and (C) at least one of dihydroxyethylglycine and its salts, wherein (C) dihydroxyethylglycine and its salts are 0.1 to 50 parts by mass with respect to a total of 100 parts by mass of (A) anionic surfactant and (B) nonionic surfactant. Patent Document 3 discloses a liquid cleaning agent composition for hard articles such as tableware and / or around kitchens, containing (a) a nonionic surfactant with an HLB of 10.5 or less (excluding (b)), (b) a glycoside having a hydrocarbon group with 8 to 18 carbon atoms and a glycoside group with an average degree of condensation of 0.5 to 3, and (c) an organic solvent with a logPow of 0 to 1.5, wherein the content of (a) in all surfactants is 30% to 95% by mass, the mass ratio of (c) to (a), which is (c) / (a), is 2 to 8, and the viscosity at 20°C is 20 mPa·s or less. Patent Document 4 discloses a liquid cleaning agent composition for hard surfaces containing a surfactant, wherein the surfactant contains (A) a nonionic surfactant and optionally (B) an amphoteric surfactant, with (A) accounting for 60% by mass or more of the total surfactant, and (A) contains (A1) an alkyl mono or dialkanolamine or its alkylene oxide adduct (the alkylene oxide has 2 or 3 carbon atoms), wherein the alkyl group has 10 to 18 carbon atoms and the alkanol group has 2 or 3 carbon atoms, and the proportion of (A1) in the total of (A) and (B) is 0.5% by mass or more and 20% by mass or less. Patent Document 5 discloses a liquid disinfectant detergent composition containing (A) an anionic surfactant, (B) a long-chain alkyl di-short-chain alkyl hydroxyethylammonium salt, (C) a nonionic surfactant compound having a specific structure, (D) at least one selected from nonionic surfactants other than (C) and amphoteric surfactants, (E) a solvent, and (F) water. [Prior art documents] [Patent Documents]
[0004] [Patent Document 1] Japanese Patent Publication No. 2020-97711 [Patent Document 2] Japanese Patent Publication No. 2020-90606 [Patent Document 3] Japanese Patent Publication No. 2019-210475 [Patent Document 4] Japanese Patent Publication No. 2020-15863 [Patent Document 5] Japanese Patent Publication No. 2020-200420 [Overview of the project] [Problems that the invention aims to solve]
[0005] Among the types of dirt that adhere to dishes and cooking utensils, oily stains are modified by the action of heat, light, and oxygen in the air, becoming extremely difficult to remove (modified oily stains). Therefore, dish and cooking utensil cleaning agents need to have high cleaning power against oily stains.
[0006] Furthermore, when cleaning dirt from dishes and cooking utensils, cleaning agents are sometimes foamed up using a sponge or spray and applied to the objects. The foam of the cleaning agent not only adheres to the dirt and improves cleaning efficiency, but also has the effect of allowing the worker to perceive the progress and continuation of the cleaning work intuitively.
[0007] The present invention provides a cleaning agent composition for hard articles that has excellent cleaning power against oil stains and excellent foam retention. [Means for solving the problem]
[0008] The present invention relates to a cleaning agent composition for hard articles containing the following components (a), (b), and (c), The mass ratio of the content of component (a) to the content of component (c), (a) / (c), is 0.40 or more and 5.0 or less. The composition optionally contains one or more surfactants selected from (d) betaine-type surfactants and amide-type nonionic surfactants [hereinafter referred to as component (d)], wherein the content of component (d) is less than 10% by mass of the total amount of surfactants in the composition. This invention relates to a cleaning agent composition for hard articles. (a) Components: Polyoxyalkylene alkyl or alkenylamine having an alkyl or alkenyl group with 6 to 20 carbon atoms and an average number of added oxyalkylene groups of 1 to 5. (b) Components: One or more surfactants selected from nonionic surfactants and anionic surfactants (excluding components (a) and amide-type nonionic surfactants) (c) Ingredients: Solvent
[0009] Furthermore, the present invention relates to a method for cleaning hard articles, comprising bringing the cleaning agent composition for hard articles of the present invention into contact with a hard article to which dirt is attached. [Effects of the Invention]
[0010] The present invention provides a cleaning agent composition for hard articles that exhibits excellent cleaning power against oil stains and excellent foam retention. [Modes for carrying out the invention]
[0011] Although the mechanism by which the effects of this invention are realized has not been fully elucidated, the applicant believes it to be as follows. Among modified oil stains, those adhering to cookware and cooking equipment become highly modified due to their heat history, and it is considered advantageous to use relatively hydrophobic detergents to remove them from the object during cleaning. However, such detergents generally have low foaming properties, and when cleaning relatively low-degree-modified oil stains on dishes, the low-degree-modified oil stains exhibit foam-breaking properties, resulting in insufficient foaming, a reduction in the amount of dishes that can be cleaned, and decreased efficiency. Furthermore, if foaming is considered to prioritize cleaning dishes, which are relatively hydrophilic and have a low degree of modification, the cleaning performance of countertops and ranges, which often have highly modified stains, will decrease. When components (a) and (b) of the present invention are adsorbed onto modified oil stains, for example, via a hydrophobic alkyl group, component (a) is adsorbed near the adsorption interface or spreads horizontally relative to the adsorption interface at a location away from the adsorption interface, due to the small number of moles of the hydrophilic oxyalkylene group portion. Component (b) is adsorbed with relatively free movement perpendicular to the adsorption interface, due to the hydrophilic portion, such as the oxyalkylene group portion. Component (c) rapidly promotes aggregation in the molecular aggregate formation of components (a) and (b) and coexists within the molecular aggregate of components (a) and (b). Furthermore, component (c) changes the hydrophobicity of the stain surface by being pre-adsorbed onto the stain surface or present near the stain surface. Due to this behavior, it is presumed that component (c) has the effect of providing a lipophilic / hydrophilic balance that facilitates adsorption onto surfaces such as modified oil stains. Component (a) and component (b), which possess such adsorption properties, cannot satisfy the required performance for highly modified oil and low-modified oil even if their hydrophilicity is adjusted in their respective structures individually. When component (a) and component (b) coexist, it is expected that they will form molecular aggregates in which the density of hydrophilic groups is high near the hydrophobic groups, and furthermore, the hydrophilic region has a wide area away from the dirt interface. When such surfactants form molecular aggregates, even if the molecular aggregates are hydrophobic and easily adsorb and detach from highly modified oil stains, the structure of the hydrophilic group portion is strong, so it is thought that even if the relatively hydrophilic low-modified oil component is dispersed and stabilized, the foam-breaking effect from the oil is unlikely to occur. Therefore, it is thought that cleaning power can be maintained at the same time as maintaining cleaning performance against highly modified oil stains, while also maintaining cleaning foam with less foam-breaking properties against low-modified oil stains. On the other hand, betaine-type and amide-type surfactants are thought to affect the lipophilic / hydrophilic balance of component (c) and reduce its adsorption to modified oil stains. Furthermore, component (d) readily interacts with component (a) due to its betaine and amide groups, and is thought to be a factor that hinders the effectiveness of component (a). For this reason, caution is required when component (d) is included. Furthermore, the effects of this invention are not limited to the mechanisms of action described herein.
[0012] <Detergent composition for hard articles> (a) The component is a polyoxyalkylene alkyl or alkenylamine having an alkyl or alkenyl group with 6 to 20 carbon atoms and an average addition mole number of oxyalkylene group of 1 to 5.
[0013] (a) From the viewpoint of improving the amount that can be washed by the persistence of foam while maintaining a certain detergency (hereinafter referred to as "persistence of washing foam"), the number of carbon atoms of the alkyl or alkenyl group possessed by the component (a) is 6 or more, preferably 8 or more, more preferably 10 or more, and 20 or less, preferably 18 or less. (a) The group possessed by the component is preferably an alkyl group. The oxyalkylene group is preferably an oxyalkylene group having 2 carbon atoms and / or an oxyalkylene group having 3 carbon atoms, that is, an oxyethylene group and / or an oxypropylene group, and more preferably an oxyethylene group. (a) The component preferably contains an oxyethylene group as the oxyalkylene group. (a) From the viewpoint of detergency, the average addition mole number of the oxyalkylene group of the component is 1 to 5, preferably 1.5 or more, more preferably 2 or more, and preferably 4.5 or less.
[0014] (a) Examples of the component include alkylene oxide adducts of monoamines having an alkyl or alkenyl group with 6 or more, further 8 or more, and 20 or less, further 18 or less carbon atoms and an average addition mole number of oxyalkylene group of 1 to 5.
[0015] (a) Examples of the component include, for example, compounds represented by the following general formula (a1).
[0016]
Chemical formula
[0017] [In the formula, R is an alkyl or alkenyl group having 6 to 20 carbon atoms, EO is an ethyleneoxy group, m and n are the average number of moles added, independently between 0 and 5, and the sum of m and n is between 1 and 5.]
[0018] In formula (a1), R may have 6 or more carbon atoms, more preferably 8 or more, more preferably 10 or more, and 20 or less, and more preferably 18 or less. R is preferably an alkyl group. The sum of m and n is preferably 1.5 or more, more preferably 2 or more, and preferably 4.5 or less.
[0019] (a) The HLB of component (a) may be, for example, preferably 9 or more, more preferably 9.5 or more, and preferably 14.2 or less, and more preferably 13.0 or less, from the viewpoint of availability and the persistence of the cleaning foam. The HLB of component (a) is due to Griffin. In this invention, the HLB value obtained from the Griffin method equivalent measured values in the examples described later can be considered as the HLB by the Griffin method. The same applies to the HLB of other surfactants such as component (b).
[0020] The cleaning agent composition for hard articles of the present invention may contain component (a) in an amount, for example, preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 10% by mass or less, from the viewpoint of the persistence of cleaning foam.
[0021] From the viewpoint of the persistence of cleaning foam, the cleaning agent composition for hard articles of the present invention may contain, for example, preferably 0.1% by mass or more, more preferably 1% by mass or more, even more preferably 10% by mass or more, and preferably 60% by mass or less, more preferably 55% by mass or less, and even more preferably 50% by mass or less, relative to the total amount of surfactants in the composition. The total amount of surfactants is the total amount of components (a), (b), and any other surfactants, such as any (d), contained in the composition. The cleaning agent composition for hard articles of the present invention is a composition containing surfactants, and may contain components (a), (b), and optionally (d) as surfactants.
[0022] (b) Component is one or more surfactants selected from (b1) nonionic surfactants [hereinafter referred to as (b1) component] and (b2) anionic surfactants [hereinafter referred to as (b2) component] (excluding component (a) and amide-type nonionic surfactants).
[0023] (b1) Component includes one or more nonionic surfactants selected from (b11) polyoxyalkylene alkyl ether [hereinafter referred to as (b11) component], (b12) alkyl(poly)glycoside [hereinafter referred to as (b12) component], (b13) polyoxyalkylene fatty acid ester [hereinafter referred to as (b13) component], (b14) polyglycerin fatty acid ester [hereinafter referred to as (b14) component], and (b15) (poly)oxyalkylene sorbitan fatty acid ester [hereinafter referred to as (b15) component]. When the cleaning agent composition for hard articles of the present invention contains component (b1), it is preferable that the composition contains one or more nonionic surfactants selected from components (b11) and (b12), and further one or more nonionic surfactants selected from component (b12), as component (b1).
[0024] The oxyalkylene group of component (b11) is preferably a carbon 2 oxyalkylene group and / or a carbon 3 oxyalkylene group, i.e., an oxyethylene group and / or an oxypropylene group, with an oxyethylene group being more preferred. From the viewpoint of the persistence of the washing foam, the average number of moles of oxyalkylene groups added to component (b11) is preferably 0 or more, more preferably 1 or more, and preferably 25 or less, and more preferably 23 or less. Component (b11) preferably contains an oxyethylene group as the oxyalkylene group. The number of carbon atoms in the alkyl group of component (b11) is preferably 3 or more, more preferably 4 or more, and preferably 30 or less, and more preferably 24 or less, from the viewpoint of the persistence of the cleaning foam. The alkyl group of component (b11) may be linear or branched, but linear is preferred from the viewpoint of the persistence of the cleaning foam. The alkyl group of component (b11) may be saturated or unsaturated, but saturated is preferred from the viewpoint of the persistence of the cleaning foam.
[0025] (b12) From the viewpoint of the persistence of the cleaning foam, the number of carbon atoms in the alkyl group of component (b12) is preferably 3 or more, more preferably 4 or more, and more preferably 30 or less, and more preferably 24 or less. Also, from the viewpoint of the persistence of the cleaning foam, the average degree of condensation of sugars such as glucose of component (b12) is preferably 1 or more, and more preferably 10 or less, and more preferably 5 or less. Component (b12) is preferably an alkyl(poly)glycoside whose constituent sugar is glucose. As component (b12), an alkyl(poly)glucoside having an alkyl group with 3 or more, more preferably 4 or more, more preferably 30 or less, and more preferably 24 or less carbon atoms, and an average degree of condensation of glucose of 1 or more, and more preferably 10 or less, and more preferably 5 or less.
[0026] The HLB of component (b1) may be, for example, preferably 9 or higher, more preferably 9.5 or higher, and preferably 17.4 or lower, and more preferably 16.9 or lower, from the viewpoint of availability and washability. The HLB of component (b1) is determined by the Griffin method, and as described above, the hydrophilic-lipophilic index measured by the predetermined method can be considered as the HLB of component (b) by the Griffin method.
[0027] (b2) Examples of components include fatty acid salts (preferably with 8 to 24 carbon atoms), alkyl (preferably with 8 to 24 carbon atoms) sulfonates, alkyl (preferably with 8 to 18 carbon atoms) benzenesulfonates, alkyl (preferably with 8 to 24 carbon atoms) sulfate esters, alkyl (preferably with 2 to 24 carbon atoms) phosphate esters, polyoxyalkylene (preferably polyoxyethylene) alkyl (preferably with 8 to 18 carbon atoms) sulfate esters, polyoxyalkylene (preferably polyoxyethylene) alkyl (preferably with 8 to 18 carbon atoms) carboxylates, or alkyl (preferably with 6 to 18 carbon atoms) sulfosuccinates. Examples of salts include alkali metal salts such as sodium salts and potassium salts.
[0028] The cleaning agent composition for hard articles of the present invention may contain component (b) in an amount, for example, preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 10% by mass or less, from the viewpoint of the persistence of cleaning foam.
[0029] From the viewpoint of the persistence of cleaning foam, the cleaning agent composition for hard articles of the present invention may contain, for example, preferably 10% by mass or more, more preferably 15% by mass or more, even more preferably 20% by mass or more, and preferably 90% by mass or less, more preferably 80% by mass or less, and even more preferably 70% by mass or less, relative to the total amount of surfactant in the composition.
[0030] From the viewpoint of the persistence of cleaning foam, the cleaning agent composition for hard articles of the present invention may have a mass ratio (a) / (b) of the content of component (a) to the content of component (b), which is, for example, preferably 0.01 or more, more preferably 0.05 or more, even more preferably 0.1 or more, even more preferably 0.15 or more, even more preferably 0.18 or more, and preferably 3 or less, more preferably 2 or less, even more preferably 1 or less, even more preferably 0.5 or less, even more preferably 0.3 or less, and even more preferably 0.23 or less.
[0031] (c) The component is a solvent. (c) The component may be one or more solvents selected from (c1) glyceryl ether (hereinafter referred to as component (c1)), (c2) glycol ether (hereinafter referred to as component (c2)), and (c3) polypropylene glycol (hereinafter referred to as component (c1)).
[0032] As the glyceryl ether of component (c1), alkylglyceryl ethers having alkyl groups with 5 or more carbon atoms, more preferably 6 or more, 10 or less, and more preferably 9 or less are preferred. Monoalkylglyceryl ethers are preferred for the alkylglyceryl ether. As component (c1), 2-ethylhexylglyceryl ether is preferred.
[0033] (c2) The glycol ether of component (c2) is preferably a mono, di, or triethylene glycol monoalkyl ether, mono, di, or tripropylene glycol monoalkyl ether, or a component (c2) having 1 to 8 carbon atoms in the alkyl group, preferably 2 to 6 carbon atoms.
[0034] (c3) The polypropylene glycol with a weight-average molecular weight of 500 or more, more preferably 600 or more, more preferably 700 or more, and more preferably 5000 or less, more preferably 3000 or less, and more preferably 2000 or less is preferred. (c3) The polypropylene glycol with a weight-average molecular weight of 700 or more and 2000 or less, for example 1000 is preferred.
[0035] (c) Component (c1) is preferred from the viewpoint of the persistence of the cleaning foam. The cleaning agent composition for hard articles of the present invention preferably contains component (c1) as component (c) from the viewpoint of the persistence of the cleaning foam.
[0036] The cleaning agent composition for hard articles of the present invention may contain component (c) in an amount, for example, preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, and even more preferably 8% by mass or less, from the viewpoint of the persistence of cleaning foam.
[0037] From the viewpoint of the persistence of cleaning foam, the cleaning agent composition for hard articles of the present invention has a mass ratio (a) / (c) of 0.40 or more, preferably 0.50 or more, more preferably 0.60 or more, and 5.0 or less, preferably 4.0 or less, more preferably 3.0 or less, even more preferably 2.5 or less, even more preferably 2 or less, even more preferably 1.5 or less, even more preferably 1.0 or less, even more preferably 0.85 or less, and even more preferably 0.78 or less.
[0038] When the cleaning agent composition for hard articles of the present invention contains component (c1) as component (c), from the viewpoint of the persistence of cleaning foam, (a) / (c) is 0.40 or more, preferably 0.50 or more, more preferably 0.60 or more, and 5.0 or less, preferably 4.0 or less, more preferably 3.0 or less, even more preferably 2.5 or less, even more preferably 2.0 or less, even more preferably 1.5 or less, even more preferably 1.0 or less, even more preferably 0.85 or less, and even more preferably 0.78 or less. When the cleaning agent composition for hard articles of the present invention contains component (c1) as component (c), the mass ratio (a) / (c1) of the content of component (a) to the content of component (c1) is preferably 0.40 or more, more preferably 0.50 or more, even more preferably 0.60 or more, and preferably 5.0 or less, more preferably 4.0 or less, even more preferably 3.0 or less, even more preferably 2.5 or less, even more preferably 2.0 or less, even more preferably 1.5 or less, even more preferably 1.0 or less, even more preferably 0.85 or less, and even more preferably 0.78 or less.
[0039] Furthermore, if the cleaning agent composition for hard articles of the present invention contains component (c2) and / or component (c3) as component (c), then (a) / (c) is preferably 0.60 or more, more preferably 1.0 or more, and 5.0 or less, preferably 4.0 or less, preferably 3.0 or less, and more preferably 2.0 or less, from the viewpoint of the persistence of cleaning foam. If the cleaning agent composition for hard articles of the present invention contains component (c2) and / or component (c3) as component (c), then the mass ratio of the content of component (a) to the total content of components (c2) and (c3), which is (a) / [(c2)+(c3)], is preferably 0.60 or more, more preferably 1.0 or more, and 5.0 or less, preferably 4.0 or less, preferably 3.0 or less, and more preferably 2.0 or less, from the viewpoint of the persistence of cleaning foam.
[0040] Furthermore, if the cleaning agent composition for hard articles of the present invention contains component (c1), component (c2), and / or component (c3) as component (c), the mass ratio of the content of component (c1) to the total content of components (c2) and (c3), which is (c1) / [(c2)+(c3)], is preferably 0.1 or more, more preferably 0.3 or more, more preferably 0.6 or more, and 10 or less, preferably 6 or less, preferably 4 or less, and more preferably 3 or less, from the viewpoint of the persistence of cleaning foam.
[0041] The cleaning agent composition for hard articles of the present invention may contain, to the extent that it does not impair the objectives of the present invention, surfactants other than component (a) and component (b), enzymes (protein-degrading enzymes, lipid-degrading enzymes, carbohydrate-degrading enzymes, etc.), hydrotropes, pH adjusters, thickeners, dispersants, viscosity modifiers, fragrances, colorants, antioxidants, preservatives, and other components.
[0042] The cleaning agent composition for hard articles of the present invention optionally contains one or more surfactants selected from betaine-type surfactants and amide-type nonionic surfactants as component (d), and from the viewpoint of the persistence of cleaning foam, the content of component (d) is 10% by mass, preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1.5% by mass or less, relative to the total amount of surfactants in the composition, and the lower limit may be 0% by mass or more. The cleaning agent composition for hard articles of the present invention may contain 0% by mass of component (d) in the composition.
[0043] (d) Among the components, the betaine-type surfactant is a surfactant having a betaine structure. Examples of betaine-type surfactants include alkyl (e.g., 8 to 18 carbon atoms) dimethylaminoacetic acid betaine, alkyl (e.g., 8 to 18 carbon atoms) amidopropyl betaine, alkyl (e.g., 8 to 18 carbon atoms) hydroxysulfobetaine, and alkyl (preferably 8 to 18 carbon atoms) carboxymethylhydroxyethylimidazolium betaine. In the present invention, the content of the betaine-type surfactant may be the total content in the composition of betaine-type surfactants selected from alkyl (8 to 18 carbon atoms) dimethylaminoacetic acid betaine, alkyl (8 to 18 carbon atoms) amidopropyl betaine, alkyl (8 to 18 carbon atoms) hydroxysulfobetaine, and alkyl (8 to 18 carbon atoms) carboxymethylhydroxyethylimidazolium betaine.
[0044] (d) Among the components, the amide-type nonionic surfactant is an amide compound of a fatty acid having 8 to 18 carbon atoms and an alkylamine having 1 to 6 hydroxyl groups. The alkylamine is preferably one or more, more preferably two to eight carbon atoms, and specifically, for example, monoethanolamine, diethanolamine, monopropanolamine, dipropanolamine, glucamine, N-methylglucamine, and N-methylethanolamine. In the present invention, component (d) may contain one or more amide-type nonionic surfactants selected from fatty acid (8 to 18 carbon atoms) diethanolamide, fatty acid (8 to 18 carbon atoms) N-methylethanolamide, and fatty acid (8 to 18 carbon atoms) N-methylglucamide. In the present invention, the content of the amide-type nonionic surfactant may be the total content of amide-type nonionic surfactants selected from fatty acid (8 to 18 carbon atoms) diethanolamide, fatty acid (8 to 18 carbon atoms) N-methylethanolamide, and fatty acid (8 to 18 carbon atoms) N-methylglucamide in the composition.
[0045] From the viewpoint of the persistence of cleaning foam, the total amount of surfactant in the cleaning agent composition for hard articles of the present invention may be, for example, preferably 1% by mass or more, more preferably 2.5% by mass or more, even more preferably 5% by mass or more, and preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less. The cleaning agent composition for hard articles of the present invention is a composition containing a surfactant, and may contain component (a), component (b), and optionally component (d) as surfactants, with the total amount of surfactants within the above range.
[0046] The cleaning agent composition for hard articles of the present invention preferably contains water from the viewpoint of composition stability and workability. The water is not particularly limited, but examples include tap water, well water, deionized water, and distilled water. In the present invention, it is preferable that water is used in an amount equal to the remainder of the composition (totaling 100% by mass). The water content can be, for example, 50% by mass or more, more specifically 60% by mass or more, and more specifically 70% by mass or more in the composition. The cleaning agent composition for hard articles of the present invention may be a liquid composition.
[0047] The cleaning agent composition for hard articles of the present invention may have a pH at 20°C that is, for example, preferably 5 or higher, more preferably 5.5 or higher, even more preferably 6 or higher, and preferably 11 or lower, more preferably 9 or lower, and even more preferably 8.5 or lower.
[0048] The cleaning agent composition for hard articles of the present invention can be used for various hard articles, but is preferably for tableware and / or hard articles around the kitchen, and more preferably for tableware.
[0049] Hard materials used around the kitchen are items used in the vicinity of the kitchen, and specifically, (1) Refrigerators, cupboards, and other storage places for food, dishes, and cooking utensils, (2) Drains, countertops, range hoods, sinks, gas ranges, microwave ovens and other food preparation areas, (3) Floors, walls, etc. surrounding the storage area and the cooking area. In this invention, these are referred to as "hard articles for kitchen use" for convenience. Also, as for tableware, specifically, (i) Dishes such as plates and bowls, (ii) Storage containers such as Tupperware and glass jars, (iii) Cooking utensils such as knives, cutting boards, pots, frying pans, and fish grills, (iv) Cooking appliances such as food processors and blenders, etc. These include components and utensils that come into contact with the food ingredients. For convenience, in this invention, these will be referred to as "tableware." Furthermore, the present invention preferably covers articles selected from tableware, storage containers, cooking utensils, and cooking appliances, and more preferably covers articles selected from plates, bowls, Tupperware, bottles, knives, cutting boards, pots, frying pans, fish grills, food processors, and mixers.
[0050] The materials of the hard articles targeted by the present invention include plastics (including silicone resins), metals, ceramics, wood, and combinations thereof. The cleaning agent composition for hard articles of the present invention can effectively clean oily stains adhering to these hard articles.
[0051] As mentioned above, oil stains adhering to hydrophobic materials such as plastics become more difficult to remove due to their modification. However, the present invention exhibits excellent cleaning effects even against oil stains adhering to hard plastic articles, and also boasts excellent foam retention. The present invention is also suitable for cleaning hard plastic articles. Examples of plastics include polyolefins such as polypropylene and polyethylene, polymethacrylate, polycarbonate, ABS resin, and polyethylene terephthalate.
[0052] <Method for cleaning hard materials> The present invention provides a method for cleaning hard articles, which involves bringing the cleaning agent composition for hard articles of the present invention into contact with the hard article to which dirt is attached. The matters described in the cleaning agent composition for hard articles of the present invention can be appropriately applied to the cleaning method for hard articles of the present invention.
[0053] In the cleaning method for hard articles of the present invention, it is preferable to foam the cleaning agent composition for hard articles of the present invention and bring it into contact with the hard article. For example, the cleaning agent composition for hard articles of the present invention can be foamed using, for example, a sponge or a sprayer equipped with a foam-forming mechanism and brought into contact with the hard article.
[0054] The hard articles targeted by the cleaning method for hard articles of the present invention include those described in the cleaning agent composition for hard articles of the present invention. Tableware is one of the suitable hard articles.
[0055] In the cleaning method for hard articles of the present invention, the dirt adhering to the hard article may be oily dirt, or may be dirt containing oily dirt.
[0056] In the present invention, hard articles, such as tableware, can be hand-washed with the hard article cleaning agent composition of the present invention, and then rinsed with water. A specific hand-washing method involves hand-washing hard articles, such as tableware, with a flexible material to which a cleaning solution using the hard surface cleaning agent composition of the present invention has been applied, and then rinsing with water. For example, the composition of the present invention is applied to a flexible material such as a water-soaked sponge to hold the cleaning solution, and the hard article, such as tableware, is rubbed and washed by lathering it several times by hand. The total concentration of components (a) and (b) in the cleaning solution held by the flexible material is preferably 1,000 ppm or more, more preferably 2,000 ppm or more, preferably 70,000 ppm or less, more preferably 50,000 ppm or less, and even more preferably 30,000 ppm or less, from the viewpoint of high foaming ability and foam persistence. After washing is complete, water is added for rinsing. For example, in this invention, 3.3 to 133 parts by mass of rinsing water per 1 part by mass of the composition used for washing is sufficient to eliminate the foam and complete rinsing quickly. This amount of rinsing water is about 2 / 3 to 1 / 10 of the amount used when using conventional hand-washing detergent compositions.
[0057] Furthermore, in the cleaning method for hard articles of the present invention, the cleaning agent composition for hard articles of the present invention can be brought into contact with hard articles to which oil stains or the like are attached, preferably in the form of droplets or foam. A spray means can be used in this method. That is, in the present invention, a cleaning agent for hard articles can be used which is obtained by filling the cleaning agent composition for hard articles of the present invention into a container equipped with a sprayer. The present invention provides a cleaning agent for hard articles in a spray container, which is obtained by filling the cleaning agent composition for hard articles of the present invention into a container equipped with a sprayer.
[0058] The container equipped with the sprayer in the cleaning agent for hard articles in a spray container of the present invention includes manual spraying devices that do not use propellants, such as trigger-type spray containers and pump-type spray containers, and aerosols that use propellants. The container equipped with the sprayer is preferably a trigger-type spray that can spray or apply the contents in droplet or foam form, and more preferably a trigger-type spray equipped with a mechanism for spraying the contents in droplet form or a trigger-type spray equipped with a mechanism for forming foam (foam-forming mechanism).
[0059] In the present invention, when using a trigger-type spray equipped with a mechanism for spraying the hard article cleaning agent composition of the present invention in a droplet form, the nozzle diameter of the spray nozzle of the spray container containing the composition is preferably in the range of 0.1 mm or more, more preferably 0.3 mm or more, and preferably 2 mm or less, and more preferably 1 mm or less, in order to ensure ease of spraying, that the sprayed droplets are not rough, that the spray is not linear, and that the sprayable area does not become extremely narrow. When using a trigger-type spray equipped with a mechanism for spraying in droplet form, the cleaning agent for hard articles in a spray container of the present invention sprays preferably 0.1 mL or more, more preferably 0.3 mL or more, and preferably 5 mL or less, and more preferably 2 mL or less of the composition in a single operation.
[0060] When using a trigger-type spray equipped with a foam-forming mechanism, the cleaning agent for hard articles in a spray container of the present invention sprays, preferably 0.5 mL or more, more preferably 1 mL or more, preferably 30 mL or less, more preferably 15 mL or less, and even more preferably 5 mL or less of the composition in a single operation. [Examples]
[0061] The cleaning agent compositions for hard articles shown in Tables 1-3 were prepared using the following ingredients, and their cleaning power against oil stains was evaluated using the following method. The results are shown in Tables 1-3. The adjustment amount in the table refers to the amount used to adjust the pH of the composition to the value shown in the table. In addition, (d) / total surfactant amount (mass%) in the table is the mass percentage of the content of component (d) relative to the total amount of surfactant in the composition, and in all of the compositions in Tables 1 and 2, the (d) / total surfactant amount was 0 mass%.
[0062] <Composition ingredients> (a) component • AMIT 102: Polyoxyethylene laurylamine, average number of added oxyethylene groups 2.1, HLB 9.1 (measured value equivalent to Griffin method*1), Kao Corporation, AMIT 102 • AMIT 302: Polyoxyethylene stearylamine, average number of added oxyethylene groups 2.1, HLB 7.4 (measured value equivalent to Griffin method*1), Kao Corporation, AMIT 302 • AMIT 105: Polyoxyethylene laurylamine, average number of added oxyethylene groups 4.2, HLB 10.4 (measured value equivalent to Griffin method*1), Kao Corporation, AMIT 105
[0063] (b) Component (b1) Component AG-124: Alkyl polyglucoside, HLB 11.5 (measured value equivalent to Griffin method*1), Kao Corporation, AG-124 E120: Polyoxyethylene lauryl ether, average number of added moles of oxyethylene groups 13.2, HLB 15.3 (Griffin method*2), Kao Corporation, Emulgen 120 E707: Polyoxyethylene alkyl ether, average number of moles of oxyethylene groups added: 7, HLB 12.1 (Griffin method*2), Kao Corporation, Emulgen 707
[0064] (b2) Component • Emal 20C: Polyoxyethylene lauryl sulfate sodium, average number of moles of oxyethylene groups added: 3, HLB 13.4 (measured value equivalent to the Griffin method*1), Kao Corporation, Emal 20C • Neopellex G-25: Sodium dodecylbenzenesulfonate, HLB 11.6 (measured value equivalent to the Griffin method*1), Kao Corporation, Neopellex G-25
[0065] (b') Component (comparison component of (b)) • Cotamin 60W: 30% aqueous solution of cetyltrimethylammonium chloride, HLB 13.8 (measured value equivalent to the Griffin method *1), Kao Corporation, Cotamin 60W, the amount added in the table is the value as cetyltrimethylammonium chloride.
[0066] *1 The HLB of the Griffin method equivalent measured value was measured using the following method. Prepare several polyoxyethylene lauryl ethers with different HLB values of Griffin. Prepare a composition with a surfactant concentration of 5% by mass using the component to be measured and water, and calculate the molar concentration (mmol / kg) of the surfactant. A precursor sample is prepared by mixing water with polyoxyethylene lauryl ether (of a specified HLB) so that the concentration of polyoxyethylene lauryl ether is the same as the molar concentration of the aforementioned surfactant. A standard sample is prepared by adding 2 g of oil (isoparaffin with an average of 16 carbon atoms) and 5 g of solvent (butyl diglycol) to the precursor sample. A phase change probe (2-ethylhexyl diglycol) is then added to the standard sample to quantify the amount of phase change probe required for the phase structure of the standard sample to change. This quantification is performed under the same conditions for multiple polyoxyethylene lauryl ethers with different HLB values, and multiple quantitative values are obtained. A calibration curve is then created from these quantitative values and the HLB values of the polyoxyethylene lauryl ethers that yield those quantitative values. To prepare the sample for measurement, 2 g of oil (isoparaffin with an average of 16 carbon atoms) and 5 g of solvent (butyl diglycol) are added to the surfactant composition obtained by mixing the component to be measured with water. A phase-change probe (2-ethylhexyl diglycol) is added to the sample, and the amount of the phase-change probe required to change the phase structure of the sample is quantified. The quantitative values obtained from the phase-change probe for the sample are applied to a calibration curve, and the corresponding HLB value of the calibration curve is taken as the HLB of the Griffin method equivalent measured value for the component being measured. *2 HLB based on the Griffin method is a calculated value using the average number of moles of oxyethylene groups added.
[0067] (c) Component GE-EH: 2-Ethylhexyl Monoglyceryl Ether • BDG: Butyl diglycol PPG-1000: Polypropylene glycol, weight-average molecular weight 1000
[0068] (d) Ingredients • Amide-type nonionic surfactant: Kao Corporation, Aminone PK-02S, Palm kernel oil fatty acid diethanolamide • Betaine-type surfactants: Kao Corporation, Anchitol 20HD, Lauryl Hydroxysulfobetaine
[0069] <Longevity of cleaning foam> A ceramic plate (23 cm in diameter) was coated with 1 g of oil (beef tallow / rapeseed oil = 1 / 1 by mass). After coating, the ceramic plate was left at 25°C for 2 hours to be used as a contaminated dish for evaluation. Multiple contaminated dishes were prepared for evaluation. A sponge (manufactured by Kikuron Co., Ltd.) was impregnated with 1 g of a hard-material cleaning agent composition and 30 g of tap water (30°C). After kneading it several times to create lather, the contaminated evaluation dish was washed. After washing, the dish was considered clean when it was no longer sticky to the touch. After the washing was complete, the sponge was not changed (no new composition was added), lather was created again, and a new contaminated evaluation dish was washed. This process was repeated until washing could no longer be completed. The persistence of the cleaning foam was evaluated by the number of contaminated evaluation dishes that could be cleaned with foam formation.
[0070] [Table 1]
[0071] [Table 2]
[0072] [Table 3]
[0073] <Combination example> Table 4 shows examples of formulations for the cleaning agent composition for hard articles of the present invention.
[0074] [Table 4]
Claims
1. A cleaning agent composition for hard articles comprising the following component (a), the following component (b), and the following component (c): the mass ratio (a) / (c) of the content of the component (a) to the content of the component (c) is 0.40 or more and 5.0 or less; optionally containing (d) one or more surfactants selected from a betaine type surfactant and an amide type nonionic surfactant [hereinafter referred to as component (d)], and the content of component (d) is less than 10 mass% based on the total amount of surfactants in the composition; A cleaning composition for hard articles. Component (a): a polyoxyalkylene alkyl or alkenyl amine having an alkyl or alkenyl group having 6 to 20 carbon atoms and an average added mole number of oxyalkylene groups of 1 to 5. Component (b): one or more surfactants selected from nonionic surfactants and anionic surfactants (excluding component (a) and amide-type nonionic surfactants) Component (c): Solvent
2. 2. The cleaning composition for hard articles according to claim 1, wherein the mass ratio (a) / (b) of the content of the component (a) to the content of the component (b) is 0.01 or more and 3 or less.
3. The cleaning composition for hard articles according to claim 1 or 2, which has a pH at 20° C. of 5 or more and 11 or less.
4. 3. The cleaning composition for hard articles according to claim 1 or 2, wherein the component (c) is one or more solvents selected from the group consisting of glyceryl ethers, glycol ethers, and polypropylene glycols.
5. The cleaning composition for hard articles according to claim 1 or 2, comprising 0.01% by mass or more and 30% by mass or less of the component (a).
6. A method for cleaning hard articles, comprising contacting the cleaning composition for hard articles according to claim 1 or 2 with a soiled hard article.
7. The method for cleaning hard articles according to claim 6, wherein the cleaning composition for hard articles is foamed and then contacted with the hard article.
8. The method for cleaning hard articles according to claim 7, wherein the cleaning agent composition for hard articles is foamed with a sponge or a sprayer equipped with a foam forming mechanism and then contacted with the hard article.
9. The method for cleaning hard articles according to claim 6, wherein the hard article is tableware.