JP2002265996A - Agent for cleaning stainproof treatment of hydrophobic hard surface and method for cleaning stainproof treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agent for the cleaning stainproof treatment of a coated surface which can easily remove attached oily stains without causing the whitening of the coated surface and without losing the luster, color and the like of the coating, and a method for cleaning stainproof treatment. SOLUTION: The agent for the cleaning stainproof treatment of hydrophobic hard surfaces comprises (A) 0.001-1 mass% at least one surface active agent to be selected from the group consisting of an anionic surface active agent, a nonionic surface active agent, and an amphoteric surface active agent, (B) 50.5 mass% chelating agent, (C) a pH adjustor in an amount necessary to render the pH of the treating agent 6.0-10.0, (D) 0.01-2 mass% soil release polymer, and (E) water. The method for cleaning stainproof treatment comprises using this agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning and antifouling agent for hydrophobic hard surfaces and a cleaning and antifouling treatment method, and more particularly to a coating surface of an automobile, a hydrophobic coating surface such as a gas range, and a plastic. When cleaning the surface of the product, the surface is not whitened, discolored or damaged by surfactants, alkalis, abrasives, etc., and it is hard to get oily stains. The present invention relates to a simple antifouling agent for cleaning hydrophobic hard surfaces and a method for antifouling cleaning which makes it easy to remove water.

[0002]

2. Description of the Related Art Oil stains on the painted surface of automobiles derived from exhaust gas discharged from diesel vehicles and the like, and oil stains on the surfaces of gas ranges, ventilation fans and the like caused by fried foods, once adhered, are dried and then removed. It is generally difficult to rub it with a brush or the like, and the painted surface is generally damaged. In order to prevent this, it is common to use a detergent having a high detergency. For example, a detergent containing a high concentration of nonionic surfactant resistant to oil stains, or a highly alkaline detergent,
Alternatively, it is effective to use a cleaning agent containing an abrasive, and various cleaning agents for such use are commercially available. However, if the concentration of the surfactant is increased, the surface is whitened by the activator or the like remaining on the painted surface, and the appearance is impaired. High alkali detergents have adverse effects such as discoloring the painted surface. Further, the abrasive-containing cleaning agent easily damages the painted surface, not only impairing the aesthetic appearance but also causing corrosion.

In order to solve such a problem, it has recently been proposed to use a soil release polymer with a focus on preventing contamination. For example, Japanese Patent Application Laid-Open No. 10-298597 discloses a technique relating to a liquid detergent that makes it difficult to stain clothes, and furthermore, Japanese Patent Application Laid-Open No. 10-007742 and Japanese Patent Application Laid-Open No. 10-007731 disclose oil repellent, A fluorine-type soil release polymer having a water-repellent function is disclosed. In addition, JP-A-2000-239365 and JP-A-2000-026492 disclose techniques for using a soil release polymer on a hard surface.

[0004] However, none of the patents fully describes the effect of the cleaning agent on the painted surface. In particular, in the case of cleaning agents used for painted surfaces of automobiles, in addition to beautification of appearance and durability of vehicles, it is necessary to sufficiently consider the influence on painted surfaces from the viewpoint of the PL method. The above prior art was not always sufficient.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to clean a painted surface without causing whitening of the painted surface, preventing the gloss or discoloration of the painted surface, and easily removing oily dirt attached. An antifouling agent is provided. Another object of the present invention is to provide a method for cleaning and stain-proofing a painted surface, which does not cause whitening of the painted surface, does not cause gloss or discoloration of the painted surface, and can easily remove adhered oily stains. is there.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that a small amount of a cleaning agent having a lower detergency than conventional ones and a hydrophobic coating surface can be applied. By using in combination with a soil release polymer that has a stain-preventing effect, not only does it have the same detergency as conventional detergents with strong detergency, but it is also less likely to get oil stains The present inventors have found that an excellent effect that can be easily removed and that the whitening of the painted surface does not occur, which cannot be achieved by a conventional cleaning agent, is achieved, and the present invention has been completed.

The present invention provides (A) at least one surfactant selected from the group consisting of anionic surfactants, nonionic surfactants and amphoteric surfactants in an amount of 0.001 to 1% by mass;
(B) 0.5% by mass or less of chelating agent, (C) p of treating agent
Cleaning and antifouling of a hydrophobic hard surface containing an amount of a pH adjuster required to bring H to 6.0 to 10.0, (D) 0.01 to 2% by mass of a soil release polymer, and (E) water. It provides a treatment agent. The treatment agent of the present invention is a one-pack treatment agent containing the components (A), (B), (C), (D), and (E) (hereinafter, this treatment agent may be referred to as “liquid P”. ). Further, the treatment agent of the present invention,
An aqueous solution containing the components (A), (B), (C) and (E) (hereinafter, this liquid may be referred to as “W liquid”) and a solution of the component (D) (hereinafter, this liquid is referred to as “SR liquid”). "May be referred to as").

The present invention also provides a method for treating a hydrophobic hard surface for cleaning and soiling, which comprises treating the hydrophobic hard surface with a P solution. The present invention further provides a method for cleaning and soiling a hydrophobic hard surface, which comprises treating a hydrophobic hard surface with a liquid P, drying it, and further applying a hydrophilic film-forming substance. is there. Another object of the present invention is to provide a method for cleaning and antifouling a hydrophobic hard surface, which is characterized in that a hydrophobic hard surface is washed with a W solution and then further treated with an SR solution. The present invention further provides a method for cleaning and contaminating a hydrophobic hard surface, which is characterized in that it is treated with an SR solution, dried, and further coated with a hydrophilic film-forming substance.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The cleaning and antifouling agent and the cleaning and antifouling method of the present invention will be described in detail below. The cleaning and antifouling agent of the present invention comprises (A) at least one surfactant selected from the group consisting of an anionic surfactant, a nonionic surfactant and an amphoteric surfactant, (B) a chelating agent, and (C) It contains a pH adjuster, (D) a soil release polymer, and (E) water. Hereinafter, each component will be described.

First, the component (A) will be described. As the surfactant, any of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant may be used, but an anionic surfactant and an amphoteric surfactant, which have little influence on a coating surface or a whitening effect, are preferable. Anionic surfactants are particularly preferred because of their low cost. As the type of the anionic surfactant, lauryl sulfate, polyoxyethylene allyl sulfate, alkylbenzene sulfonate, and the like are preferable. The content of the component (A) in the cleaning and antifouling agent of the present invention is preferably from 0.001 to 1% by mass, and from the viewpoints of detergency to oiliness, influence on a coating film and prevention of whitening property, from 0.01 to 1%. 0.2% by weight is particularly preferred. 0.
If the amount is less than 001% by mass, the detergency is inferior. If the amount exceeds 1% by mass, the detergency is too strong, which may adversely affect the coated surface or cause whitening.

The chelating agents of component (B) include L-glutamic acid diacetate 4Na (GLDA / 4Na), ethylenediaminetetraacetic acid 4Na (EDTA / 4Na), nitrilotriacetic acid 3Na (NTA / 3Na), and hydroxyethylidenediacetic acid. Phosphoric acid (HE
DP) and other water-soluble chelating agents. These chelating agents are preferable in that whitening of the coating film hardly occurs. The content of the component (B) in the cleaning and antifouling agent of the present invention varies depending on the hardness of the water to be used.
It is sufficient if it is 5% by mass or less, and particularly preferably 0.01 to 0.1% by mass. If it exceeds 0.5% by mass, whitening tends to occur on the painted surface.

Examples of the pH adjuster of the component (C) in the cleaning and antifouling agent of the present invention include basic substances such as NaOH, KOH and amines. Among them, monoethanolamine (MEA), diethanol Amines such as -lamine (DEA) and triethanolamine (TEA) are particularly preferred. The pH of the cleaning and antifouling agent of the present invention is 6.0 to 10.
Desirably, it is 0. If the pH is lower than 6.0, the detergency may be reduced, and the coating surface may be adversely affected. If the pH exceeds 10.0, the coating may be adversely affected.

The soil release polymer of the component (D) in the cleaning and antifouling agent of the present invention may be any one that exhibits hydrophilic properties when attached to a hydrophobic surface. Examples of such a substance include Repel-O-TexSRP4 (Rhone Poulin), Sokalan HP40 (BASF), and TEXCARE SRA-
100 and TECARE SRC-1 (all Clariant) and the like. The addition amount of the component (D) is suitably from 0.01 to 2% by mass. When the amount is less than 0.01% by mass, the cleaning and antifouling effect is inferior. When the amount exceeds 2% by mass, the coating film may be whitened.

The cleaning and antifouling agent of the present invention further comprises, in addition to the above components (A) to (E), an organic solvent, a dye, a rust inhibitor,
Additives such as viscosity modifiers, fragrances, preservatives, antimicrobial agents, and ultraviolet absorbers can be included. Further, the cleaning and antifouling agent of the present invention can be produced as a concentrated liquid, and diluted with water so as to have the above component concentration when used.

The cleaning and antifouling agent of the present invention comprises the component (A),
Even in the case of a one-pack type treating agent (solution P) containing (B), (C), (D) and (E), components (A), (B),
An aqueous solution (W solution) containing (C) and (E); and component (D)
And a two-part treatment agent with a solution (SR solution) of the above. P
Each of the liquid, the W liquid, and the SR liquid can be in a spray form. Further, it may be in the form of an aerosol. P
The liquid, the W liquid, and the SR liquid can be conveniently used when impregnated in a water-absorbing material. Examples of the water absorbing material include nonwoven fabric, woven fabric, knitted fabric, paper, and the like. P liquid, W
The amount of impregnation for impregnating the water-absorbing material with the liquid and the SR liquid is suitably about 50 to 500 ml per 100 g of the water-absorbing material.

The hydrophobic hard surface to be treated with the cleaning and antifouling agent of the present invention is preferably a painted surface or a plastic surface. The cleaning and antifouling treatment method of the present invention includes a step of treating a hydrophobic hard surface with a one-part cleaning and antifouling treatment agent. Specifically, a one-pack type cleaning and antifouling agent is applied to a hydrophobic hard surface so as to have a dry mass of about 0.05 to 50 g / m ² ,
Drying may be carried out at a temperature of 30 ° C. for about 1 to 6 hours, but a higher temperature is more preferable. Further, after the hydrophobic hard surface is treated with a one-pack type cleaning and antifouling agent, it may be dried and further coated with a hydrophilic film-forming substance. Such a hydrophilic film-forming substance is not particularly limited as long as it is a water-soluble substance that forms a hydrophilic film. For example, polyacrylic acids and salts thereof, polyacrylic acid copolymers and salts thereof, and hydrophilic polymers such as polyvinylpyrrolidone, polyacrylamide, polyvinyl alcohol and hydrophilic polyether-based polymers, and hydroxycellulose are exemplified. By applying these hydrophilic film-forming substances, the effect of cleaning and soiling becomes more remarkable, and in some cases, oily soil can be easily removed only by washing with water. The coating amount of the hydrophilic film-forming substance is 0.1 to 50 g / m ^{2 on} dry mass.
The degree is appropriate. Examples of the salt include alkali metal salts such as sodium salt and potassium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, ammonium salt and the like.

The cleaning and antifouling treatment method of the present invention is a two-part cleaning method.
This is done by treating the hydrophobic hard surface with an antifouling agent.
Can also be. First, clean the hydrophobic hard surface with liquid W
After washing off the dirt, treatment with an SR solution may be performed. With liquid W
Is applied to a hydrophobic hard surface with a dry mass of 0.1 to 10
g / m^TwoWash with a sponge etc. to the extent and wash with water
After flowing, the SR liquid was dried at a weight of 0.1 to 10 g / m.^Twodegree
It may be applied so as to be dried and dried. In addition, with SR liquid
After the treatment, it is dried, and the above-mentioned hydrophilic film-forming substance is formed.
Texture may be applied. Application amount of hydrophilic film-forming substance
Is a dry mass of 0.1 to 50 g / m ^TwoThe degree is appropriate.

As the SR solution, the SR polymer is dissolved in water at a concentration of 0.1%.
It is desirable to use those diluted to a concentration of 01 to 2% by mass. Any coating method may be used as long as the SR liquid adheres to the surface. For example, the SR liquid is dripped from a sponge impregnated with the SR liquid directly onto the coating surface, the SR liquid filled in a spray container or an aerosol container is uniformly sprayed, or a water-absorbing material such as nonwoven fabric, paper, cloth, etc. It is preferable to apply a hand impregnated with an SR solution by hand. When the SR liquid is impregnated into a nonwoven fabric, paper, cloth, or the like, the mass is preferably 0.5 to 5 times the mass of the water-absorbing material such as nonwoven fabric, paper, or cloth. The SR solution is
Some of the components of the above-mentioned washing liquid, or additives such as an organic solvent, a dye, a rust inhibitor, a viscosity modifier, a fragrance, a preservative, an antibacterial agent, and an ultraviolet absorber may be contained.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. Examples 1-6, Comparative Examples 1-3 Water was added to the components (unit: g) shown in Table 1 to give a total of 1
The solution was stirred for 2 hours and dissolved to prepare a cleaning and antifouling agent. <Evaluation of cleaning antifouling effect> 0.1% by mass of carbon black, 4.0% by mass of sewing machine oil, isopropyl alcohol (I
PA) A liquid composed of 95.9% by mass was prepared in advance in a spray container, and this was used as a model dirty liquid. On a white painted plate of 100 mm x 100 mm 1 mm thick iron substrate (solid color: thermosetting acrylic resin coating)
About 1 ml of the above-mentioned cleaning and antifouling agent was dropped with a dropper and applied to the entire surface of the coated plate with a sponge.
It was left to dry for one hour. Next, about 1 g of the above model soil liquid was uniformly sprayed on each of the application surfaces. Next, it was dried in a thermostat at 50 ° C. for 1 hour.
After drying, apply about 10 g of the above cleaning and antifouling agent to each coated surface.
Was sprayed, rubbed lightly in a circle with a sponge, rinsed with tap water, and allowed to dry at room temperature. The same operation (operation until spraying the model dirty liquid, leaving it at room temperature, and drying it) was repeated twice. Next, the stained state of the coated plate after drying was visually inspected.

[0020] The evaluation index ◎: Most dirt is not left ○: slightly dirty remain △: a little dirt remains ×: dirt remains fairly

<Evaluation of Whitening Property> A few drops of the above-mentioned cleaning and antifouling agent were dropped on a previously cleaned glass surface with a dropper.
It was evenly applied with a sponge. Next, this was dried at 50 ° C. for 10 minutes, and the state of whitening on the glass surface was visually inspected. Evaluation index ◎: no whitening occurs ○: slight whitening occurs △: slight whitening occurs ×: severe whitening occurs

<Evaluation of Influence on Coating Film> On a coated plate used in an influence test on a coating film described in JIS K 2398, a cleaning and antifouling agent is dropped by a dropper one by one at three places. The dripped part is covered with a watch glass and left in a thermostat at 50 ° C. for 6 hours, then taken out of the thermostat, and the dripped part is washed away with water. After drying at room temperature, the surface of the coating film was visually inspected. Evaluation index ：: There is no swelling of the coating film, and there is no change in gloss and color before and after the test. X: The coating film swells or changes in gloss and color.

Examples 7 to 11 and Comparative Examples 4 to 6 A liquid W (cleaning liquid) and a liquid SR were prepared according to the formulations shown in Table 2, respectively. Comparative Examples 4 and 5 are commercial detergents A and B
It is. <Evaluation of cleaning antifouling effect> 100 with sufficiently removed dirt
About 1 ml of the above SR solution was dropped on a white coated plate of 100 mm with a dropper, and applied while being spread over the entire coated plate with a sponge. After further drying at 50 ° C. for 1 hour, about 1 g of the model soil liquid was sprayed uniformly on the coated surface. Next, it was dried at 50 ° C. for 1 hour.
After drying, about 10 g of the cleaning liquid W described in Example 7 was applied to the coated surface.
It was sprayed with a spray, gently rubbed in a circle with a sponge, and rinsed with tap water. About 1 ml of the above SR solution was dropped with a dropper, and the solution was applied while being stretched over the entire surface with a sponge. Next, about 1 g of the above model soil liquid was sprayed again uniformly on the coated surface dried at 50 ° C. for 1 hour. This was further dried in a thermostat at 50 ° C. for 1 hour. About 10 g of the cleaning solution W was sprayed again on the application surface with a spray, gently rubbed with a sponge so as to draw a circle over the entire surface, rinsed with tap water, and allowed to dry at room temperature. The state of the stain on the coated plate after drying was visually inspected. As in Example 1,
The cleaning antifouling property was evaluated, and the whitening property of the cleaning liquid W and the effect on the coating film were examined.

[0024]

[Table 1]

[0025]

[Table 2]

* 1) Emal 20T (manufactured by Kao Corporation) * 2) Emulken 707 (manufactured by Kao Corporation) * 3) Kenamen B-3267J EDTA-4Na: ethylenediamine tetraacetic acid 4Na NTA-3Na: nitrilotriacetic acid 3Na GB: qualonic acid Sodium (Kylest Chemical) TEA: Triethanolamine DEA: Diethanolamine MEA: Monoethanolamine SRP-A: Soil release polymer (TEXCARE SRA-100, Clariant) SRP-B: Soil release polymer (TEXCARE SRC, Clariant) -1) Commercial cleaner A: Car Wash (manufactured by ARMOR ALL) Commercial cleaner B: Advanced Car Wash (manufactured by Turtle Wax)

[0027]

As is clear from Tables 1 and 2, the cleaning and antifouling agent and the cleaning and antifouling method of the present invention do not cause whitening on the painted surface and have a glossy or discolored surface. Oily dirt can be easily removed without any effect.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C11D 3/33 C11D 3/33 3/37 3/37 17/04 17/04 17/08 17/08 F Term (reference) 4D075 AA01 BB24Y BB65Y BB65Z BB68Y BB68Z CA34 CA37 DA23 DB01 DB31 DC12 DC18 EA05 EC35 EC51 EC54 EC60 4H003 AB19 AB27 AB31 BA12 BA14 BA20 BA28 DA05 DA11 DA17 EA21 EB08 EB14 EB15 EB30 EB28

Claims (17)

[Claims] (A) 0.001 to 1% by mass of at least one surfactant selected from the group consisting of an anionic surfactant, a nonionic surfactant and an amphoteric surfactant, and (B) a chelating agent. 5% by mass or less;
The amount of pH adjuster required to bring the pH to 0 to 10.0, (D)
An agent for cleaning and soiling a hydrophobic hard surface, comprising 0.01 to 2% by mass of a soil release polymer and (E) water. 2. The antifouling agent for cleaning / cleaning a hydrophobic hard surface according to claim 1, which is a one-pack type agent comprising the components (A), (B), (C), (D) and (E). . 3. The antifouling agent for cleaning hydrophobic hard surfaces according to claim 2, which is in a spray form. 4. The antifouling agent for cleaning a hydrophobic hard surface according to claim 2, which is in the form of an aerosol. 5. The agent according to claim 2, which is in a form impregnated with a water-absorbing material. 6. The water-absorbing material is cloth or paper.
The cleaning and antifouling agent for hydrophobic hard surfaces according to the above. 7. Components (A), (B), (C) and (E)
Solution (W solution) containing water and solution of component (D) (SR solution)
2. The antifouling agent for cleaning a hydrophobic hard surface according to claim 1, which is a two-pack agent. 8. The cleaning and antifouling agent for a hydrophobic hard surface according to claim 7, wherein the W liquid and / or the SR liquid are in a spray form. 9. The antifouling agent for cleaning a hydrophobic hard surface according to claim 7, wherein the W solution and / or the SR solution is in an aerosol form. 10. The antifouling agent for cleaning a hydrophobic hard surface according to claim 7, wherein the W liquid and / or the SR liquid are in a form of being impregnated in a water absorbing material. 11. The agent for cleaning and soiling hydrophobic hard surfaces according to claim 10, wherein the water-absorbing material is cloth or paper. 12. The cleaning and antifouling agent for a hydrophobic hard surface according to claim 1, wherein the hydrophobic hard surface is a painted surface or a plastic surface. 13. A method for cleaning and antifouling a hydrophobic hard surface, comprising treating a hydrophobic hard surface with the one-pack type cleaning and antifouling agent according to any one of claims 2 to 6. 14. The hydrophobic hard surface according to claim 13, wherein the hydrophobic hard surface is treated with a one-pack type cleaning and soiling agent, dried, and further coated with a hydrophilic film-forming substance. Cleaning and antifouling treatment method. 15. After cleaning a hydrophobic hard surface with the liquid W according to any one of claims 7 to 11, the cleaning liquid is applied to the hydrophobic hard surface.
A method for cleaning and soiling hydrophobic hard surfaces, characterized by treating with the SR solution according to any one of the above. 16. The method according to claim 15, wherein the treatment with the SR solution is followed by drying and further applying a hydrophilic film-forming substance. 17. The method according to claim 13, wherein the hydrophobic hard surface is a painted surface or a plastic surface.