Detergent component

Abstract

To provide an aqueous detergent composition capable of removing an object for detachment, cleaning, or removal and hard to drip, even whether detergent is in a wet state or detergent is in a dried and filmed state after the detergent is sprayed to a coated film, a resin composition, a rubber composition, or a mixture thereof which is the object for detachment, cleaning, or removal.SOLUTION: A detergent composition includes: 3-37.2 mass% of the following (A), 6-80 mass% of (B), and 7.2-88.4 mass% of (C), where a mass ratio represented by (A) / (B) is 0.06-6.2: (A) at least one component selected from vinyl acetate polymer, altered vinyl acetate polymer, vinyl acetate copolymer, and altered vinyl acetate copolymer; (B) at least one solvent selected from formula (I) being R1-OH or formula (II) being R1-R2-OH (herein, R1 represents C4-C10 hydrocarbon group, and R2 represents C1-C3 alkoxy group and includes one or more repeating units); and (C) being water.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cleaning composition, and more particularly to a cleaning composition that is used to remove not only coating films, but also resin compositions, rubber compositions, and mixtures thereof. [Background technology]

[0002] 2. Description of the Related Art Various proposals have been made so far as to cleaning agents and cleaning compositions used for removing coatings and the like (Patent Documents 1 to 5).

[0003] Here, the following three types of (1) to (3) are mainly known as cleaning compositions for removing coating films. (1) Cleaning agents containing chlorine-based solvents as the main component (2) Cleaning agents containing ester-based solvents as the main component (3) Cleaning agents containing aromatic alcohol as the main component

[0004] The cleaning composition for removing coating films of the type (1) is highly effective in removing coating films, but may cause pollution or cause deterioration of the working environment. The coating film stripper disclosed in Patent Document 1 is a coating film stripper that is used to strip coating films applied to all kinds of base materials such as ships, aircraft, vehicles, buildings, walls, handrails, etc., and is a cleaning composition of the type (1) mentioned above. Dichloromethane, which is the main component of the coating film stripper disclosed in Patent Document 1, is a carcinogenic substance, a disease-causing chemical substance, and a substance subject to the Regulations on Prevention of Harm from Specified Chemical Substances under the Industrial Safety and Health Act. In addition, the coating film stripper disclosed in Patent Document 1 is a solvent-based cleaning agent.

[0005] Cleaning compositions for removing coating films of the type (2) are flammable and may be dangerous to handle. Patent Document 2 discloses a stripping composition used to strip coating films formed on the surfaces of buildings, civil engineering structures, etc. The stripping composition disclosed in Patent Document 2 is a cleaning composition of the type (2) described above. Examples of coating films formed on the surfaces of buildings, civil engineering structures, etc., for which the stripping agent composition of Patent Document 2 is used for stripping include JIS K5621 "General-purpose rust-preventive paint", JIS K5651 "Amino alkyd resin paint", JIS K5658 "Weather-resistant topcoat paint for architecture", JIS K5659 "Weather-resistant paint for steel structures", JIS K5660 "Glossy synthetic resin emulsion paint", JIS K5663 "Synthetic resin emulsion paint", JIS K5668 "Synthetic resin emulsion pattern paint", JIS K5670 "Acrylic resin-based non-aqueous dispersion paint", JIS A6909 "Architectural finishing coating material", etc. The stripping agent composition of Patent Document 2 is said to have excellent permeability and softening properties into such coating films.

[0006] The stripping agent composition disclosed in Patent Document 2 contains a dibasic acid ester as a main component, which is a hazardous material that falls under Class 4, Class 3 petroleum.

[0007] The type (3) cleaning composition for removing coating films has a coating film removing effect while also having a certain degree of affinity with water, so cleaning agents that contain water as a solvent and are easier to handle than solvent-based cleaning agents are known. For example, Patent Document 3 discloses a water-based coating film stripper that is said to have good stripping performance and workability. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 5940204 [Patent Document 2] Patent No. 6964500 [Patent Document 3] Patent No. 7229485 [Patent Document 4] Patent No. 7020716 [Patent Document 5] Patent No. 6654314 Summary of the Invention [Problem to be solved by the invention]

[0009] As described above, various cleaning agents have been developed for use in removing coatings and the like.

[0010] When any of the cleaning agents is used to remove a coating film, it is applied to the coating film and then the coating film is softened or dissolved to remove it.

[0011] When applying a cleaning agent to the coating to be removed, minimal dripping is required, but it is not easy to make a cleaning agent less likely to drip. The recommended application amount for products on the market is at most 1 kg / m 2 Many of them are stated as a degree.

[0012] In addition, the coating is removed after being softened or dissolved, but if the cleaning agent is in a liquid state, there is a concern that it may drip or adhere to or splash onto the surrounding area when it is removed.

[0013] In addition, there has been a shift from solvent-based cleaners to aqueous cleaners due to ease of handling, and aqueous cleaners that contain water as a solvent are preferred.

[0014] Therefore, the object of this invention is to provide a water-based cleaning composition which contains water as a solvent and can remove the target of peeling, cleaning or removal even when the cleaning agent is in a wet state after application to the target of peeling, cleaning or removal, such as a coating film, a resin composition, a rubber composition or a mixture thereof, or when the cleaning agent is in a dried film state, and which is less likely to drip and can adhere to the target for a long time. [Means for solving the problem]

[0015] The cleaning composition of the present invention can be exemplified as follows.

[0016] [1] A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 6% by mass to 80% by mass, and (C) in an amount of 7.2% by mass to 88.4% by mass, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.2. (A) one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) one or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C)Water

[0017] [2] A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 6% by mass to less than 9% by mass, (C) in an amount of 7.2% by mass to 88.4% by mass, and (D) in an amount of 0.1% by mass to 1.5% by mass, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.2. (A) one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) one or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C)Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

[0018] [3] A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 9% by mass to 70% by mass, (C) in an amount of 7.2% by mass to 88.4% by mass, and (D) in an amount of 3% by mass or less, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.2. (A) one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) one or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C)Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

[0019] [4] A cleaning composition comprising the following (A) at 3 mass% to 37.2 mass%, (B) at more than 70 mass% to 80 mass%, (C) at 7.2 mass% to 88.4 mass%, and (D) at 0.1 mass% to 8 mass%, in which the mass ratio represented by (A) / (B) is 0.06 to 6.2. (A) one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) one or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C)Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

[0020] [5] A cleaning composition according to any one of [1], [2], [3], and [4], which has a maximum viscosity of 100 dPa s or more when the viscosity at 25°C is measured for 60 seconds using a VT-06 Viscometer.

[0021] [6] A cleaning composition according to any one of [1], [2], [3], [4], and [5], which is used for stripping, cleaning, and removing coatings, resin compositions, rubber compositions, and mixtures thereof. Effect of the Invention

[0022] According to the present invention, there is provided an aqueous cleaning composition that contains water as a solvent and can remove the above-mentioned objects to be peeled, cleaned or removed, even if the cleaning agent is in a wet state after application to the coating film, resin composition, rubber composition, mixture thereof or the like that is the target of peeling, cleaning or removal, or even if the cleaning agent is in a dried film-like state, and can adhere to the object of removal for a long time without dripping. [Brief description of the drawings]

[0023] [Figure 1] 1 is a table showing the component combinations of each of the test examples prepared by varying the blending ratios of components A, B, C, etc., contained in the cleaning composition of the present invention and subjected to the test. [Diagram 2] FIG. 2 shows reference photographs illustrating the results of a "dripping" test for the cleaning compositions according to Investigation Test No. 1 to Investigation Test No. 11 shown in FIG. 1, as well as a list of the "degree of dripping (after 3 hours)" and the measured "viscosity." [Diagram 3]FIG. 2 shows reference photographs illustrating the results of the "dripping" test for the cleaning compositions according to Investigation Test No. 12 to Investigation Test No. 22 described in FIG. 1, as well as a list of the "degree of dripping (after 3 hours)" and the measured "viscosity." [Figure 4] FIG. 2 is a table showing the "degree of dripping (after 3 hours)" and the measured "viscosity" of each of the cleaning compositions according to Investigation Test No. 1 to Investigation Test No. 22 shown in FIG. [Diagram 5] FIG. 2 is a photograph showing the results after 30 minutes and 3 hours in a "cleaning property" test for each of the cleaning agent compositions according to Investigation Test No. 1 to Investigation Test No. 11 shown in FIG. 1, and a diagram showing the cleaning property evaluation results. [Figure 6] FIG. 2 is a photograph showing the results after 30 minutes and 3 hours in a "cleaning property" test for each of the cleaning agent compositions according to Investigation Test No. 12 to Investigation Test No. 22 shown in FIG. 1, and a diagram showing the cleaning property evaluation results. [Figure 7] 1 is a photograph showing the results of a comparison between a "commercially available high-viscosity water-based adhesive" and the cleaning composition of the present invention with respect to the relationship between viscosity and the reduction in dripping. [Figure 8] 3 is a photograph showing the results of a test to confirm the cleaning ability of a resin composition using the cleaning composition of the present invention. [Figure 9] Photographs showing the results of a test to confirm the cleaning ability of the detergent composition of the present invention on a rubber composition. [Figure 10] 3 is a photograph showing the results of a test to confirm the cleaning ability of the detergent composition of the present invention on a mixture of a resin composition, a rubber composition, etc. [Figure 11] 3 is a photograph showing the results of a test to confirm the cleaning ability of the detergent composition of the present invention on a mixture of a resin composition, a rubber composition, etc. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The present inventors conducted a cleaning performance confirmation test (examination test) as described below when component (C) contained water as a solvent and was used in combination with the following components (A) and (B).

[0025] Component (A): one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers

[0026] (B) Ingredients: One or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units.

[0027] The present inventors also conducted a cleaning performance confirmation test (examination test) as described below when component (C) contained water as a solvent and was used in combination with the above-mentioned components (A) and (B) as well as the following component (D).

[0028] Component (D): one or more thickeners selected from carboxyvinyl polymers or modified carboxyvinyl polymers, acrylic acid polymers or acrylic acid copolymers

[0029] As a result of these cleaning performance confirmation tests (review tests), the inventors discovered that by containing water as a solvent and combining the above-mentioned components (A) and (B) in a prescribed content ratio, or by containing water as a solvent and combining the above-mentioned components (A), (B) and (D) in a prescribed content ratio, the cleaning agent forms a film after natural drying, thereby simultaneously removing dirt and cleaning agent and creating an aqueous cleaning agent that is less likely to drip, and thus completed the present invention.

[0030] In this specification and drawings, the above-mentioned components (A), (B), (C) and (D) may be represented as component A, component B, component C and component D, respectively.

[0031] <Study test> <Preparation of cleaning compositions used in the study> The cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 22 in Figure 1 were prepared by changing the blending ratios of Components A, B, C, and D in the cleaning compositions used for peeling, cleaning, and removing coatings, resin compositions, rubber compositions, and mixtures thereof.

[0032] The cleaning compositions of Investigation Test No. 1 to Investigation Test No. 22 were prepared by thoroughly mixing the aqueous emulsion of each resin shown in FIG. 1 as Component A, Component B, Component C, Component D, and an alkaline component (N-methylethanolamine) as a neutralizing agent.

[0033] The parts by mass of component A are shown in FIG. 1 as the dry mass of the aqueous emulsion used, and the remainder is shown as water.

[0034] The numbers in FIG. 1 for components A, B, C, D, and the alkaline component (N-methylethanolamine) used as a neutralizing agent represent mass percent values.

[0035] The notation "Component A / Component B" indicates the mass ratio of component A / component B.

[0036] <"Drip" test> The cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 22 were each tested for "dripping" as follows.

[0037] A survey of the recommended application amounts of several commercially available paint strippers (which do not drip easily) revealed that the upper limit of the range of the recommended application amount is 1 kg / m 2 (0.1g / cm 2 ) was set for many products. Therefore, we decided to use 0.16g / cm2, which is even higher than the recommended application amount. 2 A "drip" test was carried out using the coating amount of

[0038] A clean stainless steel plate was placed on a vertical surface, and 1 g (0.16 g / cm) of each of the cleaning compositions shown in Test No. 1 to Test No. 22 was applied to an area of ​​2.5 cm × 2.5 cm. 2) After application, the dripping was observed immediately, 30 minutes, and 3 hours later at 25°C.

[0039] FIG. 2 is a diagram showing reference photographs illustrating the results of the "dripping" test of the cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 11, and a table showing the "degree of dripping (after 3 hours)" and the measured "viscosity." FIG. 3 is a diagram showing reference photographs illustrating the results of the "dripping" test of the cleaning compositions shown in Investigation Test No. 12 to Investigation Test No. 22, and a table showing the "degree of dripping (after 3 hours)" and the measured "viscosity."

[0040] FIG. 4 shows the "degree of dripping (after 3 hours)" and viscosity of each of the cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 22.

[0041] The "degree of dripping (after 3 hours)" in Figure 4 is the result of a dripping test whose results are shown in the reference photographs in Figures 2 and 3. After 3 hours, dripping of less than 5 mm was evaluated as "○", dripping of 5 mm or more but less than 2.5 cm was evaluated as "△", and dripping of 2.5 cm or more was evaluated as "×".

[0042] The "viscosity" in FIG. 4 is the maximum viscosity measured for 60 seconds by adjusting each of the cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 22 to 25°C using a Viscometer VT-06 (manufactured by Riontec Co., Ltd.).

[0043] <"Washability" test> The "detergency" of each of the detergent compositions shown in Investigation Test No. 1 to Investigation Test No. 22 was tested as follows.

[0044] The surface of the stainless steel plate was cleaned and placed horizontally, and an acrylic oil-based spray paint was evenly sprayed on the plate and allowed to dry and harden overnight.

[0045] The plate was placed horizontally in a 1 cm × 3 cm section, and 0.2 g (0.067 g / cm) of each of the cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 22 was applied to the plate at a temperature of about 25°C. 2) was applied, and then scraped off with a scraper 30 minutes and 3 hours later, and then wiped off with a rag.

[0046] FIG. 5 shows reference photographs and a diagram showing the cleaning property evaluation results after 30 minutes and 3 hours in the "cleaning property" test for each of the cleaning compositions shown in Investigation Test No. 1 to Investigation Test No. 11, and FIG. 6 shows reference photographs and a diagram showing the cleaning property evaluation results after 30 minutes and 3 hours in the "cleaning property" test for each of the cleaning compositions shown in Investigation Test No. 12 to Investigation Test No. 22.

[0047] In Figures 5 and 6, the cleaning performance evaluation results after 30 minutes and 3 hours were evaluated as follows: those that could be removed were rated "○", those that could be removed to some extent were rated "△", and those that could not be removed were rated "×".

[0048] <Study on the cleaning agent composition used in the study> <Study Test No. 1> The cleaning composition of Investigation Test No. 1, which consisted only of Component B (benzyl alcohol), dripped a lot and could not be used as the cleaning composition of the present invention.

[0049] <Study Test No. 2> The cleaning composition of Investigation Test No. 2, which had 4.8% by mass of Component A (vinyl acetate-acrylic acid copolymer resin), 80% by mass of Component B (benzyl alcohol), 7.2% by mass of Component C, and 8% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.06, had both low dripping and cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0050] <Study Test No.3> In Test No. 3, in which the components A (vinyl acetate resin) was 13.5% by mass, the components B (benzyl alcohol) was 70% by mass, and the components C were 16.5% by mass, giving a mass ratio of A / B of 0.19, slight dripping was observed, but this was sufficient depending on the application, the cleaning properties were good, and the cleaning agent formed a film after 3 hours and could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be used as the cleaning agent composition of the present invention.

[0051] <Study Test No.4> The cleaning composition of Test No. 4, which had 16% by mass of Component A (vinyl acetate-acrylic acid copolymer resin), 60% by mass of Component B (benzyl alcohol), and 24% by mass of Component C, with a mass ratio of A / B of 0.27, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the objects to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0052] <Study Test No.5> The cleaning composition of Investigation Test No. 5, which had 27% by mass of Component A (vinyl acetate resin), 30% by mass of Component B (benzyl alcohol), and 43% by mass of Component C with a mass ratio of A / B of 0.90, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0053] <Study Test No.6> The cleaning composition of Investigation Test No. 6, which contains 3 mass% of Component A (vinyl acetate resin), 30 mass% of Component B (benzyl alcohol), 61.8 mass% of Component C, 3 mass% of Component D (carboxyvinyl polymer), an A / B mass ratio of 0.10, and 2.2 mass% of N-methylethanolamine, had both low dripping and cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was recognized that this can be used as the cleaning composition of the present invention.

[0054] <Study Test No. 7> The cleaning composition of Test No. 7, which had 36% by mass of Component A (vinyl acetate resin), 20% by mass of Component B (benzyl alcohol), and 44% by mass of Component C, with a mass ratio of A / B of 1.8, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0055] <Study Test No.8> The cleaning composition of Investigation Test No. 8, which contains 4.8% by mass of Component A (vinyl acetate resin), 20% by mass of Component B (phenoxypropanol), 73.5% by mass of Component C, and 1% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.24, and contains 0.7% by mass of N-methylethanolamine, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0056] <Study Test No.9> The cleaning composition of Investigation Test No. 9, which contains 4.8% by mass of Component A (vinyl acetate resin), 20% by mass of Component B (phenethyl alcohol), 72.6% by mass of Component C, and 1.5% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.24, and contains 1.1% by mass of N-methylethanolamine, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this cleaning composition could be used as the cleaning composition of the present invention.

[0057] <Study Test No. 10> The cleaning composition of Test No. 10, which had 37.2% by mass of component A (vinyl acetate resin), 9% by mass of component B (benzyl alcohol), and 53.8% by mass of component C, with a mass ratio of A / B of 4.13, showed slight dripping and the coating could not be completely removed after 30 minutes, but this may be sufficient depending on the application. After 3 hours, the cleaning agent formed a coating and could be removed together with the object to be cleaned, and it was recognized that this can be used as the cleaning composition of the present invention.

[0058] <Study Test No. 11> The cleaning composition of Investigation Test No. 11, which contains 27 mass% of Component A (vinyl acetate resin), 9 mass% of Component B (benzyl alcohol), 62.4 mass% of Component C, 0.8 mass% of Component D (carboxyvinyl polymer), an A / B mass ratio of 3.00, and 0.8 mass% of N-methylethanolamine, had both low dripping and cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was recognized that this can be used as the cleaning composition of the present invention.

[0059] <Study Test No. 12> The cleaning composition of Test No. 12, which had 37.2% by mass of component A (vinyl acetate resin), 6% by mass of component B (benzyl alcohol), 56.7% by mass of component C, and 0.1% by mass of component D (carboxyvinyl polymer), with a mass ratio of A / B of 6.2, showed slight dripping and the coating could not be completely removed after 30 minutes, but this may be sufficient depending on the application. After 3 hours, the cleaning agent formed a coating and could be removed simultaneously with the object to be cleaned, and it was recognized that this can be used as the cleaning composition of the present invention.

[0060] <Study Test No. 13> The cleaning composition of Investigation Test No. 13, which contains 3% by mass of component A (vinyl acetate resin), 6% by mass of component B (benzyl alcohol), 88.4% by mass of component C, 1.5% by mass of component D (carboxyvinyl polymer), an A / B mass ratio of 0.50, and 1.1% by mass of N-methylethanolamine, shows little dripping. The removability after 30 minutes and 180 minutes is somewhat weak, but the little dripping makes it less susceptible to restrictions on the amount of application, and is within the range that can be resolved by adjusting the amount of application of the cleaning agent. Depending on the application, this is sufficient, and it was recognized that this can be used as the cleaning composition of the present invention.

[0061] <Study Test No. 14> The cleaning composition of Investigation Test No. 14, which contained 38.4 mass% of Component A (vinyl acetate-acrylic acid copolymer resin), 3 mass% of Component B (benzyl alcohol), 57 mass% of Component C, 0.8 mass% of Component D (carboxyvinyl polymer), an A / B mass ratio of 12.8, and 0.8 mass% of N-methylethanolamine, showed little dripping but had poor removability and could not be used as the cleaning composition of the present invention.

[0062] <Study Test No. 15> The cleaning composition of Test No. 15, which had 4.8% by mass of Component A (vinyl copolymer resin), 80% by mass of Component B (benzyl alcohol), 7.2% by mass of Component C, and 8% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.06, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0063] <Study Test No. 16> The cleaning composition of the investigation test No. 16, which contains 37.2% by mass of component A (vinyl copolymer resin), 6% by mass of component B (benzyl alcohol), 55.2% by mass of component C, 0.8% by mass of component D (carboxyvinyl polymer), a mass ratio of A / B of 6.2, and 0.8% by mass of N-methylethanolamine, has little dripping. After 30 minutes, the coating film could not be completely removed, but this is sufficient depending on the application. After 3 hours, the components penetrated and the cleaning agent formed a coating, and the cleaning agent coating and coating film could be removed simultaneously with a scraper, and it was recognized that this can be the cleaning agent composition of the present invention.

[0064] <Study Test No. 17> The cleaning composition of Investigation Test No. 17, which had 4.8% by mass of Component A (vinyl acetate resin), 80% by mass of Component B (phenoxyethanol), 7.2% by mass of Component C, and 8% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.06, had both low dripping and good cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0065] <Study Test No. 18> The cleaning composition of the investigation test No. 18, which contains 37.2% by mass of component A (vinyl acetate resin), 6% by mass of component B (phenoxyethanol), 55.2% by mass of component C, 0.8% by mass of component D (carboxyvinyl polymer), a mass ratio of A / B of 6.2, and 0.8% by mass of N-methylethanolamine, has little dripping. After 30 minutes, the coating film could not be completely removed, but this is sufficient depending on the application. After 3 hours, the components penetrated and the cleaning agent formed a coating, and the cleaning agent coating and coating film could be removed simultaneously with a scraper, and it was recognized that this can be used as the cleaning agent composition of the present invention.

[0066] <Study Test No. 19> The cleaning composition of Investigation Test No. 19, which had 4.8% by mass of Component A (vinyl acetate resin), 80% by mass of Component B (polyoxyethylene benzyl alcohol ether), 7.2% by mass of Component C, and 8% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.06, had both low dripping and cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0067] <Study Test No.20> The cleaning composition of the investigation test No. 20, which contains 37.2% by mass of component A (vinyl acetate resin), 6% by mass of component B (polyoxyethylene benzyl alcohol ether), 55.2% by mass of component C, 0.8% by mass of component D (carboxyvinyl polymer), a mass ratio of A / B of 6.2, and 0.8% by mass of N-methylethanolamine, has little dripping. After 30 minutes, the coating film could not be completely removed, but this is sufficient depending on the application. After 3 hours, the components penetrated and the cleaning agent formed a coating, and the cleaning agent coating and coating film could be removed simultaneously with a scraper, and it was recognized that this can be used as the cleaning agent composition of the present invention.

[0068] <Study Test No.21> The cleaning composition of Test No. 21, which had 4.8% by mass of Component A (vinyl acetate resin), 80% by mass of Component B (butyl cellosolve), 7.2% by mass of Component C, and 8% by mass of Component D (carboxyvinyl polymer), with a mass ratio of A / B of 0.06, had both low dripping and cleaning properties, and after 3 hours the cleaning agent formed a film that could be removed simultaneously with the object to be cleaned. It was therefore recognized that this could be the cleaning composition of the present invention.

[0069] <Study Test No.22> The cleaning composition of the investigation test No. 22, which contains 37.2% by mass of component A (vinyl acetate resin), 6% by mass of component B (butyl cellosolve), 55.2% by mass of component C, 0.8% by mass of component D (carboxyvinyl polymer), a mass ratio of A / B of 6.2, and 0.8% by mass of N-methylethanolamine, has little dripping. After 30 minutes, the coating film could not be completely removed, but this is sufficient depending on the application. After 3 hours, the components penetrated and the cleaning agent formed a coating, and the cleaning agent coating and coating film could be removed simultaneously with a scraper, and it was recognized that this can be the cleaning agent composition of the present invention.

[0070] <Evaluation of the cleaning compositions used in the study> It was confirmed that Investigation Test Samples No. 2 to No. 13 and Investigation Test Samples No. 15 to No. 22 were examples that could achieve the object of the present invention.

[0071] <Study on the relationship between viscosity and the lack of dripping> The cleaning composition of Investigation Test Example No. 4, which was confirmed to be an example that can achieve the object of the present invention in the above-mentioned investigation test, was compared with a "commercially available high-viscosity water-based adhesive" in terms of the relationship between viscosity and dripping.

[0072] Regarding "liquid dripping," a clean stainless steel plate was placed vertically in the same manner as in the above-mentioned examination test, and 1 g (0.16 g / cm) of each of the "commercially available high-viscosity water-based adhesive" and the cleaning composition of the examination test No. 4 was applied to an area of ​​2.5 cm x 2.5 cm. 2 ) and 2g (0.32g / cm 2 ) After application, the dripping was observed 3 hours later at 25°C.

[0073] In addition, the "commercially available high-viscosity aqueous adhesive" and the cleaning composition of Test Example No. 4 used in this comparative study were each adjusted to 25°C, and their maximum viscosities were measured for 60 seconds using a Viscometer VT-06 (manufactured by Riontec Co., Ltd.) in the same manner as in the above-mentioned test.

[0074] The results are shown in Figure 7. The viscosity of the "commercially available high-viscosity water-based adhesive" was more than twice as high as that of the cleaning composition of Test Example No. 4, but the degree of dripping was large.

[0075] As described above, in this comparative study, viscosity and little dripping did not necessarily coincide. However, taking into account the results of the study test examples which were confirmed to be examples capable of achieving the object of the present invention in the above-mentioned study, it was considered that a cleaning composition capable of achieving the object of the present invention should have a maximum viscosity of 100 dPa s or more when the viscosity at 25°C is measured for 60 seconds using a VT-06 Viscometer with a No. 2 rotor.

[0076] Based on the above considerations, it was confirmed that there are several embodiments of the cleaning composition as described below that achieve the object of the present invention of providing an aqueous cleaning composition that contains water as a solvent and can remove the above-mentioned target objects to be peeled, cleaned or removed, even if the cleaning agent is in a wet state after application to the target objects to be peeled, cleaned or removed, such as a coating film, a resin composition, a rubber composition or a mixture thereof, or even if the cleaning agent is in a dried film-like state, and that is less likely to drip and can be in close contact with the target objects to be removed for a long time.

[0077] The first embodiment contains the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 6% by mass to 80% by mass, and (C) in an amount of 7.2% by mass to 88.4% by mass, with the mass ratio represented by (A) / (B) being 0.06 to 6.2. (A) one or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) one or more solvents selected from the following formula (I) or formula (II): R1-OH (I) R1-R2-OH (II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C)Water

[0078] The second embodiment contains 3 mass% to 37.2 mass% of the above-mentioned (A), 6 mass% to less than 9 mass% of the above-mentioned (B), 7.2 mass% to 88.4 mass% of the above-mentioned (C), and 0.1 mass% to 1.5 mass% of the following (D), with a mass ratio represented by (A) / (B) of 0.06 to 6.2. (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

[0079] The third embodiment contains 3 mass% to 37.2 mass% of the above-mentioned (A), 9 mass% to 70 mass% of the above-mentioned (B), 7.2 mass% to 88.4 mass% of the above-mentioned (C), and 3 mass% or less of the above-mentioned (D), with a mass ratio represented by (A) / (B) of 0.06 to 6.2.

[0080] The fourth embodiment contains 3 mass% to 37.2 mass% of the above-mentioned (A), more than 70 mass% to 80 mass% of the above-mentioned (B), 7.2 mass% to 88.4 mass% of the above-mentioned (C), and 0.1 mass% to 8 mass% of the above-mentioned (D), and the mass ratio represented by (A) / (B) is 0.06 to 6.2.

[0081] It was confirmed that the cleaning compositions having the configurations according to the above-mentioned first to fourth embodiments have little dripping and exhibit the function of removing a coating film even when the cleaning agent is in a wet state or when the cleaning agent is in a dried film-forming state.

[0082] The cleaning composition of the present embodiment is used for peeling, cleaning, and removing coating films, resin compositions, rubber compositions, and mixtures thereof.

[0083] The coating films to be peeled, washed or removed include various coating films known in this technical field, which are subject to peeling, washing or removal in Patent Documents 1, 2 and the like.

[0084] Examples of resin compositions that can be peeled off, washed off, and removed include adhesives, glues, inks, paints, and coatings that use acrylic resins, urethane resins, alkyd resins, vinyl acetate resins, epoxy resins, nitrocellulose, etc., oils that have been resinified by oxidative polymerization, and chewing gum.

[0085] Examples of rubber compositions that can be peeled, washed or removed include pressure sensitive adhesives, glues, inks, paints and coatings that use natural rubber, urethane rubber, nitrile rubber, chloroprene rubber, butyl rubber etc., as well as objects that are adhered to the surface by friction of rubber parts such as tires, conveyer belts, shoes, building materials and home appliances.

[0086] Examples of the mixtures that are to be peeled, cleaned, or removed include those that originate from various products and those to be cleaned around manufacturing sites, in which the above-mentioned substances are present in a mixed state.

[0087] Hereinafter, in this specification, the coating film, resin composition, rubber composition, or mixture thereof that is peeled off, cleaned, or removed by the cleaning composition of this embodiment may be simply referred to as the "object to be cleaned."

[0088] In the cleaning composition of the first to fourth embodiments described above, the component A, which is contained in an amount of 3% by mass to 37.2% by mass, i.e., one or more components selected from vinyl acetate polymer, modified vinyl acetate polymer, vinyl acetate copolymer, and modified vinyl acetate copolymer, is considered to have an effect of preventing dripping and to form a film after drying, which adheres closely to dirt.

[0089] As a result, when the cleaning composition of the first to fourth embodiments described above is applied to the surface of the object to be cleaned, the cleaning composition of the present embodiment applied thereto tends to remain. In addition, the cleaning composition of the present embodiment applied to the surface of the object to be cleaned can be dried to form a film and removed together with the object to be cleaned.

[0090] Examples of the above-mentioned component A include vinyl acetate resin, modified vinyl acetate resin, vinyl acetate-acrylic acid copolymer resin, modified vinyl acetate-acrylic acid copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-modified vinyl acetate copolymer resin, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-modified vinyl acetate resin, etc. These may be used alone or in combination of one or more.

[0091] From the viewpoint of functioning as an auxiliary agent exhibiting the above-mentioned dripping prevention effect, in the cleaning compositions of the first to fourth embodiments described above, Component A is desirably contained in an amount of 3% by mass to 37.2% by mass.

[0092] From the viewpoint of better exerting such functions while minimizing the possibility of impairing the penetration ability, described below, exhibited by the cleaning composition of this embodiment, it is more desirable for Component A to be contained in an amount of 4.8% by mass to 27% by mass in any of the first to fourth embodiments described above.

[0093] In the first embodiment of the cleaning composition of this embodiment, the solvent of the component B contained in an amount of 6 mass % to 80 mass % has the property of penetrating into the above-mentioned object to be cleaned, softening or dissolving it, and changing the object to a state where it is easier to remove.

[0094] It is believed that the solvent of component B in the cleaning compositions of the first to fourth embodiments described above functions as an auxiliary agent that penetrates into the above-mentioned object to be cleaned, softens or dissolves it, and changes it into a state that is easier to remove.

[0095] Examples of the above-mentioned component B include benzyl alcohol, polyoxyethylene benzyl alcohol ether, phenoxyethanol, 2-ethylbenzyl alcohol, phenethyl alcohol, phenethyl propanol, dimethylphenethyl alcohol, phenyl propanol, butyl cellosolve, diethylene glycol monobutyl ether, etc. These may be used alone or in combination of one or more.

[0096] From the viewpoint of functioning as an auxiliary agent that penetrates into the above-mentioned object to be cleaned, softens or dissolves it, and changes it into a state that is easier to remove, it is desirable for component B to be contained in an amount of 6% by mass to 80% by mass, as in the first embodiment described above.

[0097] From the viewpoint of improving the removal effect and of improving the function of reducing sagging, the B component in the first embodiment is more preferably contained in an amount of 9 mass % to 70 mass %, and further preferably contained in an amount of 20 mass % to 70 mass %.

[0098] In the cleaning compositions of the first to fourth embodiments described above, from the viewpoint of providing a cleaning composition that is useful for removing not only coating films but also resin compositions, rubber compositions, and mixtures thereof and is less likely to drip, the mass ratio (A) / (B) is preferably 0.06 to 6.2 in order to favorably exhibit the function exhibited by the above-mentioned Component A and the function exhibited by the Component B, respectively.

[0099] In the cleaning composition of the first to fourth embodiments described above, water, which is component C and is contained in an amount of 7.2% by mass to 88.4% by mass, plays a role as a solvent, and the water added as a solvent contributes to the physical properties by acting as a bridge between components A and B. In addition, safety and environmental friendliness can be improved compared to solvent-based cleaning agents that do not contain water.

[0100] In the cleaning composition of the first to fourth embodiments described above, it is preferable that the water of component C is contained in an amount of 7.2 mass % to 88.4 mass % in order to exert the above-mentioned functions. However, if the amount of component C is increased, the amounts of components A and B which exert the above-mentioned functions will decrease. Therefore, it is more preferable that the component C is contained in an amount of 7.2 mass % to 73.5 mass % in the first to fourth embodiments described above.

[0101] Component D, which is blended in the above-mentioned second to fourth embodiments, is effective in adjusting the viscosity and dripping of the cleaning composition.

[0102] When component D is blended in expectation of adjusting viscosity and dripping, as in the second embodiment described above, the content ratios of components A and C and the range of the A / B ratio in the first embodiment are not changed, and the content of component B can be set to 6% by mass to less than 9% by mass, and the content of component D can be set to 0.1 to 1.5% by mass.

[0103] In the second embodiment as well, as described above, it is preferable that the content of component A is 4.8 mass % to 27 mass % for the reasons described above.

[0104] In the second embodiment as well, as described above, it is preferable that the content of the C component is 7.2 mass % to 73.5 mass % for the reasons described above.

[0105] Furthermore, when the D component is blended in expectation of adjusting the viscosity and dripping, as in the third embodiment described above, the B component can be contained at 9 mass % to 70 mass % and the D component can be contained at 3 mass % or less without changing the content ratios of the A component and the C component and the range of the A / B ratio in the first embodiment.

[0106] As described above, in the first to fourth embodiments, by setting the content of component B to 9% by mass to 70% by mass, the removal effect is improved, and the function of reducing dripping is better exhibited, thereby better exhibiting the above-mentioned functions. Therefore, in this third embodiment, by further including component D at 3% by mass or less, it is possible to exhibit the effect of adjusting viscosity and dripping.

[0107] In the third embodiment as well, as described above, it is preferable that the content of component A is 4.8 mass % to 27 mass % for the reasons described above.

[0108] In the third embodiment as well, as described above, it is preferable that the content of the C component is 7.2 mass % to 73.5 mass % for the reasons described above.

[0109] Furthermore, when the D component is blended in expectation of adjusting the viscosity and dripping, as in the fourth embodiment described above, the B component can be contained in an amount of more than 70 mass% to 80 mass%, and the D component can be contained in an amount of 0.1 mass% to 8 mass%, without changing the content ratios of the A component and the C component and the range of the A / B ratio in the first embodiment.

[0110] In the fourth embodiment as well, as described above, it is preferable that the content of component A is 4.8 mass % to 27 mass % for the reasons described above.

[0111] In the fourth embodiment as well, as described above, it is preferable that the content of the C component is 7.2 mass % to 73.5 mass % for the reasons described above.

[0112] The cleaning composition of the first to fourth embodiments described above can have a maximum viscosity of 100 dPa s or more when the viscosity at 25° C. is measured for 60 seconds using a VT-06 Viscometer.

[0113] As a result of the above-mentioned comparative examination test, taking into account the results of the examination test examples which were confirmed to be examples capable of achieving the object of the present invention, it was considered that the viscosity of a cleaning composition capable of achieving the object of the present invention should desirably be a maximum viscosity of 100 dPa s or more when the viscosity at 25°C is measured for 60 seconds using a VT-06 Viscometer.

[0114] In addition to the above-mentioned components, the cleaning composition of the first to fourth embodiments may appropriately contain various auxiliaries that are known to be blended as auxiliaries in cleaning agents and cleaning compositions used for stripping, cleaning and removing the above-mentioned objects to be cleaned, such as thickeners, powders of animal and plant tissues or mineral powders, pH adjusters, surfactants, rust inhibitors, antifoaming agents and sequestering agents, within the range that does not impair the functions and effects exerted by the cleaning composition of the present embodiment.

[0115] As described above, the cleaning composition of the first to fourth embodiments has the property of being less likely to drip and capable of removing the object to be cleaned even when the cleaning agent is wet or when the cleaning agent has formed a coating, and therefore can be filled into small gaps using a tool such as a syringe. In addition, the amount of application can be appropriately increased or decreased depending on the level of dirt, and the composition can be applied to vertical surfaces, curved surfaces, ceiling surfaces, and other places where it is difficult to apply a normal water-based cleaning agent, and can be left there for a long time, or the composition can be applied to cover the surface and adhere to the object to be cleaned in a wet state for a long period of time, allowing the active ingredient to fully penetrate. EXAMPLES

[0116] The cleaning compositions of the test samples Nos. 2, 4, 9, and 12, which were confirmed in the above-mentioned test to be examples capable of achieving the object of the present invention, were used to clean actual household and factory stains.

[0117] <Confirmation of cleaning ability for resin composition> The cleaning composition of Test Example No. 4 was applied to the adhesive tape marks on the vertical surfaces of the structures around the kitchen of a house. No dripping or scattering was observed during application, and the workability was good. After 30 minutes had passed after application, the residue was removed with a scraper and then wiped off with a rag.

[0118] The state before cleaning, the state after the cleaning composition was applied, and the state after removal with a scraper and subsequent wiping with a rag are shown in Figure 8. As shown on the right side of Figure 8, the stain could be completely removed by removing it with a scraper and then wiping with a rag 30 minutes later.

[0119] The excellent cleaning properties of the cleaning composition of Test Example No. 4 for resin compositions were confirmed.

[0120] <Confirmation of cleaning ability for rubber composition> The cleaning composition of Test Example No. 4 was applied to the tape marks on a vertically installed electrical switch on the wall of the patent applicant's office. No dripping or splashing was observed during application, and the workability was good.

[0121] After 30 minutes, the right side of the applied surface was scraped off with a scraper while the cleaning agent was still wet, and then wiped off with a cloth. As shown on the right side of Figure 9, the cleaning agent was completely removed.

[0122] After 3 hours, the left side of the applied surface was left with a film of the cleaning agent, which was removed with a scraper and then wiped with a cloth. As shown on the right side of Figure 9, the cleaning agent film and dirt were removed at the same time.

[0123] The good cleaning properties of the cleaning composition of Test Example No. 4 for rubber compositions were confirmed.

[0124] <Confirmation of cleaning ability for mixtures of resin compositions, rubber compositions, etc.> The detergent composition of Investigation Test No. 4 was applied to the adhesive attached to a rubber hose on the ceiling of an adhesive manufacturing factory, as shown in Figure 10. Since the surface is a curved one, workability is generally poor, but the detergent composition of Investigation Test No. 4 was smooth and no stringiness was observed, and no dripping or splashing to the surroundings was observed, so workability was good.

[0125] After 90 minutes, the left side of the applied surface was scraped off with a scraper while the cleaner was still wet. As shown in the top right of Figure 10, it was completely removed.

[0126] After 18 hours, the right side of the applied surface was scraped off with a scraper after the cleaning agent had formed a film. As shown in the lower right side of Figure 10, the cleaning agent film and dirt were removed at the same time.

[0127] The composite of the removed dirt and cleaning agent was in a dry state, and the cleaning agent did not adhere to the surroundings or scatter, so it was easy to dispose of by simply disposing of it as garbage.

[0128] The dirt on the rubber hose in this case is dirt that has been accumulated over many years in a composite of resin compositions, rubber compositions and other components, and the cleaning ability for such composite materials was confirmed.

[0129] Also, the cleaning compositions of investigational test samples No. 2, No. 9, and No. 12 were applied to adhesive attached to a polyvinyl chloride pipe located near a boiler in an adhesive manufacturing factory, as shown in Figure 11. Although curved and vertical surfaces generally result in poor workability, the cleaning compositions of investigational test samples No. 2, No. 9, and No. 12 did not drip or splash to the surroundings, and workability was good.

[0130] The applied surface was dried for 8 hours, and the cleaning agent was removed with a scraper in the state of being a coating. As shown on the right side of Figure 11, all of the cleaning agent compositions of the investigation test samples No. 2, No. 9, and No. 12 could be completely removed.

[0131] The composite of the removed dirt and cleaning agent was in a dry state, and the cleaning agent did not adhere to the surroundings or scatter, so it was easy to dispose of by simply disposing of it as garbage.

[0132] The dirt on the rubber hose in this case is dirt that has been accumulated over many years in a composite of resin compositions, rubber compositions and other components, and the cleaning ability for such composite materials was confirmed.

[0133] Although the embodiment and examples of the present invention have been described above, the present invention is not limited to these and can be modified in various ways within the technical scope understood from the description of the claims.

Claims

1. A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 6% by mass to 80% by mass, and (C) in an amount of 7.2% by mass to 88.4% by mass, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.

2. (A) One or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) One or more solvents selected from the following formula (I) or formula (II): R1-OH...(I) R1-R2-OH...(II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C) Water

2. A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 6% by mass to less than 9% by mass, (C) in an amount of 7.2% by mass to 88.4% by mass, and (D) in an amount of 0.1 to 1.5% by mass, in which the mass ratio represented by (A) / (B) is 0.06 to 6.

2. (A) One or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) One or more solvents selected from the following formula (I) or formula (II): R1-OH...(I) R1-R2-OH...(II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C) Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

3. A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of 9% by mass to 70% by mass, (C) in an amount of 7.2% by mass to 88.4% by mass, and (D) in an amount of 3% by mass or less, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.

2. (A) One or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) One or more solvents selected from the following formula (I) or formula (II): R1-OH...(I) R1-R2-OH...(II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C) Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

4. A cleaning composition comprising the following (A) in an amount of 3% by mass to 37.2% by mass, (B) in an amount of more than 70% by mass to 80% by mass, (C) in an amount of 7.2% by mass to 88.4% by mass, and (D) in an amount of 0.1% by mass to 8% by mass, wherein the mass ratio represented by (A) / (B) is 0.06 to 6.

2. (A) One or more components selected from vinyl acetate polymers, modified vinyl acetate polymers, vinyl acetate copolymers, and modified vinyl acetate copolymers (B) One or more solvents selected from the following formula (I) or formula (II): R1-OH...(I) R1-R2-OH...(II) however, R1: represents a hydrocarbon group having 4 to 10 carbon atoms. R2: an alkoxy group having 1 to 3 carbon atoms and having 1 or 2 repeating units. (C) Water (D) one or more thickeners selected from a carboxyvinyl polymer or a modified carboxyvinyl polymer, an acrylic acid polymer, or an acrylic acid copolymer;

5. The cleaning agent composition according to any one of claims 1 to 4, which has a maximum viscosity of 100 dPa·s or more when the viscosity at 25°C is measured for 60 seconds using a Viscometer VT-06.

6. The cleaning composition according to any one of claims 1 to 4, which is used for peeling, cleaning or removing a coating film, a resin composition, a rubber composition or a mixture thereof.

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