KR101695865B1 - Aqueous rust deactivator composition and aqueous rust deactivator comprising the same - Google Patents

Abstract

The present invention relates to a deactivator composition for water-soluble rust, and to a water-soluble rust deactivator including the same. More specifically, the present invention relates to a deactivator composition for water-soluble rust, which enables a user to operate even in the in winter season, exhibits outstanding antirust effects with a small amount, and has eco-friendliness, anti-corrosiveness, and deactivating effects against damp rust. The present invention further relates to a water-soluble rust deactivator including the same.

Description

[0001] The present invention relates to a water-soluble rust activator composition and a water-soluble rust activator composition comprising the rust activator composition and an aqueous rust deactivator,

The present invention relates to a water-soluble antioxidant composition and a water-soluble antioxidant comprising the same, and more particularly, to a water-soluble antioxidant composition which can be applied in the winter season, exhibits excellent antirust effect in a small amount, Soluble antioxidant composition having anticorrosive effect and a water-soluble antioxidant containing the same.

In general, rust is a solid corrosion product on the surface of a metal, and iron and iron alloys, which are widely used in industry, are also rusted in the natural state and rust is generated, thereby gradually losing their original properties do. Accordingly, in order to prevent such corrosion, conventionally, oil or inorganic chemical treatment such as rust prevention, film formation, plating, coating, coating, etc. has been carried out to protect the surface. Further, in a structure or facility made of iron or an alloy thereof, breakage or erosion occurs due to corrosion of iron or its alloy, which is a material, and physical and chemical treatment may be separately performed to suppress it.

Since complete prevention of metal corrosion is practically impossible, corrosion prevention is achieved by mitigating corrosion or by preventing a certain degree of corrosion from occurring within a predetermined period of time. There are known methods for preventing corrosion, such as surface coating and surface treatment and electric coating, but mainly surface coating is used.

Conventionally, in connection with the prevention of corrosion by surface coating, it has been conventionally proposed to use a coating composition containing no heavy metals such as lead, chromium or zinc, and as a kind of various rust preventing paints or rust preventive oils containing phosphates, alkaline earth metal compounds and organic phosphonic acids or carboxylic acids Discloses an anti-corrosive pigment composition. Among these constituents, phosphoric acid is a corrosion inhibiting compound known in the art and has a function of converting the surface of iron into an insoluble phosphate to form a phosphate coating or a phosphate coating. However, in order to form a phosphoric acid film, a separate polishing step is required. When the temperature is increased, the film becomes thick and scaling may occur. In addition, there is a problem that it is possible to work even in the winter season, exhibits excellent rust inhibiting effect in a small amount, and can not simultaneously exhibit inactivating and anticorrosive effects against environmentally friendly, wet rust.

WO 2005-089071 A2 (Publication date 2005.09.29)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a process for producing a rust- Soluble rust activator composition and a water-soluble rust activator containing the same.

In order to solve the above-mentioned problems, the present invention provides a water-soluble resin composition comprising a water-soluble resin, an organic acid, a dispersant and an antirust agent, wherein the antirust agent comprises at least one selected from an amine compound and an ammonium compound, Amine in a weight ratio of 1: 1 to 5, and the ammonium-based compound comprises at least one member selected from the group consisting of ammonium carbonate, ammonium chloride, ammonium phosphate monobasic and ammonium sulfate.

According to a preferred embodiment of the present invention, the organic acid may include at least one selected from a carboxylic acid and a compound represented by the following general formula (1).

[Chemical Formula 1]

R ¹ , R ² , R ³ , R ⁴ , R ⁵ and R ⁶ are each independently H or a straight chain alkyl group of C ₁ to C ₅ or a branched alkyl group of C ₃ to C ₅ .

According to another preferred embodiment of the present invention, the organic acid may include a carboxylic acid and a compound represented by Formula 1 at a weight ratio of 1: 0.4 to 7.

According to another embodiment of the present invention, the carboxylic acid may include at least one compound selected from the group consisting of a compound represented by the following general formula (2) and a compound represented by the following general formula (3).

(2)

R ⁷ , R ⁸ , R ⁹ , and R ¹⁰ are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms.

(3)

Wherein R ¹¹ and R ¹² are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms and n is a rational number of 0 to 5

According to another preferred embodiment of the present invention, the dispersant may include at least one selected from 2-methoxyethanol, 2-butoxyethanol, 2-propoxyethanol and 2-ethoxyethanol.

According to another preferred embodiment of the present invention, 4 to 18 parts by weight of an organic acid, 6 to 35 parts by weight of a dispersing agent and 0.5 to 10 parts by weight of an antirusting agent may be added to 100 parts by weight of the water-soluble resin.

According to another preferred embodiment of the present invention, the ammonium-based compound may include at least two selected from ammonium carbonate, ammonium chloride, ammonium phosphate monobasic and ammonium sulfate.

According to another preferred embodiment of the present invention, the rust inhibitor may contain an amine compound and an ammonium compound in a weight ratio of 1: 0.1 to 5.

According to another preferred embodiment of the present invention, 6 to 35 parts by weight of the wetting agent and 180 to 260 parts by weight of the solvent may be further added to 100 parts by weight of the water-soluble resin.

According to another preferred embodiment of the present invention, the vapor-wetting agent may comprise at least one selected from glycerin, lactic acid and propylene glycol, and the solvent may comprise water.

According to another preferred embodiment of the present invention, the water-soluble resin may comprise a methacrylic acid polymer.

According to another preferred embodiment of the present invention, the water-soluble resin may include a compound represented by the following formula (4).

[Chemical Formula 4]

In Formula 4, R ¹³ and R ¹⁴ are each independently a hydrogen atom or a C ₁ to C ₅ alkyl group, and n is a rational number satisfying a weight average molecular weight of the compound of 500,000 to 1,000,000.

In order to solve the above-mentioned problems, the present invention provides a water-soluble rust activator containing the water-soluble rust activator composition and having a specific gravity of 0.95 to 1.1.

In order to solve the above-mentioned problems, the present invention provides a method for applying a water-soluble rust activating agent, wherein the water-soluble rust activating agent is applied to a thickness of 10 to 18 탆 to form a water-soluble rust-inactivating film.

The water-soluble antioxidant composition of the present invention and the water-soluble antioxidant containing the water-soluble antioxidant of the present invention can work in the winter season, exhibit an excellent rust inhibitive effect in a small amount, and are inactivated and anti-corrosion effect in a wet state.

FIG. 1A is a photograph before applying the rust inactivating agent according to a preferred embodiment of the present invention, FIG. 1B is a photograph after applying the rust activating agent according to a preferred embodiment of the present invention, FIG. 1C is a preferred embodiment It is a picture painted after applying rust inactivating agent according to the example.
FIG. 2A is a photograph before applying the rust inactivating agent according to a preferred embodiment of the present invention, FIG. 2B is a photograph of the application of the rust inactivating agent according to a preferred embodiment of the present invention, FIG. 2C is a preferred embodiment Fig. 7 is a photograph after application of the rust inactivating agent according to the example.
FIG. 3A is a photograph before applying the rust activating agent according to a preferred embodiment of the present invention, FIG. 3B is a photograph of the application of the rust inactivating agent according to a preferred embodiment of the present invention, FIG. 3C is a preferred embodiment Fig. 7 is a photograph after application of the rust inactivating agent according to the example.

Hereinafter, the present invention will be described in more detail.

As described above, conventionally, a rust-preventive pigment composition containing no heavy metals such as lead, chromium or zinc and containing various phosphates, alkaline earth metal compounds and organic phosphonic acids or carboxylic acids as one of various kinds of rust- Lt; / RTI > Among these constituents, phosphoric acid is a corrosion inhibiting compound known in the art and has a function of converting the surface of iron into an insoluble phosphate to form a phosphate coating or a phosphate coating. However, in order to form a phosphoric acid film, a separate polishing step is required. When the temperature is increased, the film becomes thick and scaling may occur. In addition, there is a problem that it is possible to work even in the winter season, exhibits excellent rust inhibiting effect in a small amount, and can not simultaneously exhibit inactivating and anticorrosive effects against environmentally friendly, wet rust.

Accordingly, the present invention provides a water-soluble resin composition comprising a water-soluble resin, an organic acid, a dispersant, and a rust inhibitor, wherein the rust inhibitor comprises at least one selected from the group consisting of an amine compound and an ammonium compound, and the amine compound includes hexamethylenetetramine and triethanolamine And the ammonium compound is at least one selected from the group consisting of ammonium carbonate, ammonium chloride, ammonium phosphate and ammonium sulfate, thereby solving the above-mentioned problems.

As a result, unlike the conventional method, it is possible to work in the winter season, exhibit a good rust preventing effect in a small amount, and achieve an inactive and anti-corrosive effect on rust in an environmentally friendly and wet state.

First, the organic acid will be described.

The organic acid may include at least one selected from the group consisting of a carboxylic acid and a compound represented by the following formula (1), preferably a carboxylic acid and a compound represented by the following formula (1).

[Chemical Formula 1]

In Formula 1, R ¹ , R ² , R ³ , R ⁴ , R ⁵ and R ⁶ are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms , Preferably each independently H or a straight chain alkyl group having ₁ to ₃ carbon atoms, and more preferably each independently H or a methyl group.

The carboxylic acid may be any conventionally used carboxylic acid without limitation, and may preferably include at least one member selected from a monocarboxylic acid, a dicarboxylic acid and a tricarboxylic acid, A compound represented by the following formula (2) and a compound represented by the following formula (3).

(2)

In Formula 2, R ⁷ , R ⁸ , R ⁹ and R ¹⁰ are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms, May be H or a straight chain alkyl group having ₁ to ₃ carbon atoms, more preferably each independently H or a methyl group.

(3)

In Formula 3, R ¹¹ and R ¹² are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms. Preferably, R ¹¹ and R ¹² are each independently H or C ₁ - C ₃ straight-chain alkyl group, and more preferably each independently H or a methyl group. In addition, n may be a rational number of n = 0 to 5, preferably n = 0 to 3.

On the other hand, when both the carboxylic acid and the compound represented by Formula 1 are included, the carboxylic acid and the compound represented by Formula 1 may be contained in a weight ratio of 1: 0.4 to 7, preferably 1: 0.6 To 6 weight ratio. If the weight ratio of the carboxylic acid and the compound represented by the formula (1) is less than 1: 0.4, the chemical reaction force with the rust becomes weak and the deactivating performance may be lowered. If the weight ratio is more than 1: 7, The resulting rust-inhibiting material may be scaled off from the surface and paint peeling may occur.

The water-soluble rust inhibitor composition of the present invention may contain 4 to 18 parts by weight, preferably 5 to 17 parts by weight, of organic acid per 100 parts by weight of the water-soluble resin. If the content of the organic acid is less than 4 parts by weight, the chemical bonding strength with the rust may decrease, and the adhesion of the resin film after drying may be decreased. If the content of the organic acid is more than 18 parts by weight, the drying time after chemical reaction with rust becomes excessively long , There may arise a problem that the composition gradually coagulates.

Next, the dispersant will be described.

The dispersant may be any dispersant conventionally used in the rust-inactivating agent composition, and may be any one selected from among 2-methoxyethanol, 2-propoxyethanol, 2-butoxyethanol, and 2-ethoxyethanol Or more, and more preferably, 2-butoxyethanol.

The water-soluble rust inhibitor composition of the present invention may contain 6 to 35 parts by weight, preferably 6.5 to 33.5 parts by weight, of a dispersant relative to 100 parts by weight of the water-soluble resin. If the amount of the dispersing agent is less than 6 parts by weight based on 100 parts by weight of the water-soluble resin, the water-soluble resin may solidify and the layer separation of the composition may occur to deteriorate the sound-holding power. If the amount exceeds 35 parts by weight, And the bonding strength of the water-soluble resin is weakened, so that there is a problem that the detergency is poor.

Next, the rust inhibitor will be described.

The water-soluble antioxidant composition of the present invention may contain 0.5 to 10 parts by weight, preferably 1 to 9 parts by weight, of a rust inhibitor based on 100 parts by weight of the water-soluble resin. If the amount of the rust inhibitor is less than 0.5 parts by weight, a problem of poor hearing power may occur. If the amount of the rust inhibitor exceeds 10 parts by weight, an excessive amount of the rust preventive substance generated on the rust may be scaled off from the surface and paint peeling may occur. have.

The rust inhibitor may include at least one selected from the group consisting of an amine compound and an ammonium compound, and may preferably include both an amine compound and an ammonium compound.

The amine compound may include hexamethylenetetramine and triethanolamine in a weight ratio of 1: 1 to 5, preferably 1: 1.5 to 4. If the weight ratio of hexamethylenetetramine and triethanolamine is less than 1: 1, the pH of the composition may be lowered to cause local coagulation and poor hearing power. If the weight ratio is more than 1: 5, And the chemical bonding force with rust may decrease.

On the other hand, the ammonium-based compound may include at least one member selected from ammonium carbonate, ammonium chloride, ammonium phosphate monobasic and ammonium sulfate, preferably two or more members selected from ammonium carbonate, ammonium chloride, ammonium phosphate monobasic and ammonium sulfate . ≪ / RTI >

The rust inhibitor may contain an amine compound and an ammonium compound in a weight ratio of 1: 0.1 to 5, preferably 1: 0.2 to 4. If the weight ratio of the amine compound and the ammonium compound is less than 1: 0.1, poor hearing power may occur. If the weight ratio is more than 1: 5, the composition may become coagulated and the application may not be possible.

Next, the water-soluble resin will be described.

The water-soluble resin may be an acrylic water-soluble resin containing a methacrylic acid polymer, and may preferably include a compound represented by the following formula (4).

[Chemical Formula 4]

In the formula (4), R ¹³ and R ¹⁴ are each independently a hydrogen atom or a C ₁ to C ₅ alkyl group, preferably each independently hydrogen atom or a C ₁ to C ₃ alkyl group, and n is a weight average A molecular weight of 500,000 to 1,000,000, preferably a weight average molecular weight of 700,000 to 950,000.

Meanwhile, the water-soluble antioxidant composition of the present invention may further comprise a wetting agent and a solvent.

The humectant can be used without limitation as long as it is a commonly used ingredient for the wetting agent of the rust-inactivating agent, and may preferably include at least one selected from glycerin, lactic acid and propylene glycol, more preferably propylene glycol .

The water-soluble antioxidant composition of the present invention may further contain 6 to 35 parts by weight, preferably 6.5 to 33.5 parts by weight, of a wetting agent based on 100 parts by weight of the water-soluble resin. If the amount of the wetting agent is less than 6 parts by weight, a problem of poor hearing power may occur. If the amount of the wetting agent is more than 35 parts by weight, paint peeling may occur.

On the other hand, the solvent can be used without limitation as long as it is a commonly used solvent for the rust-inactivating agent, and preferably water.

The water-soluble antioxidant composition of the present invention may contain 180 to 260 parts by weight of a solvent, preferably 190 to 250 parts by weight of a solvent, based on 100 parts by weight of the water-soluble resin. If the amount of the solvent is less than 180 parts by weight, the composition may gradually become coagulated. If the amount of the solvent is more than 260 parts by weight, the viscosity of the composition may be lowered. .

Meanwhile, the water-soluble rust activator of the present invention may have a specific gravity of 0.95 to 1.1, preferably 0.98 to 1.08. If the specific gravity is less than 0.95, the viscosity of the composition may be low to cause deterioration of the detergency. If the specific gravity is more than 1.1, the viscosity of the composition may be excessively high and the application may not be easy.

The water-soluble antioxidant of the present invention can be applied by applying a water-soluble antioxidant film having a thickness of 10 to 18 탆, preferably 12 to 16 탆, but is not limited thereto.

Hereinafter, the present invention will be described with reference to the following examples. The following examples are provided to illustrate the invention, but the scope of the present invention is not limited by the following examples.

[Example]

Example  1: water soluble Rust Inactivating Agent  Produce

4 parts by weight of a compound represented by the following formula (2) as an organic acid, 6.5 parts by weight of a compound represented by the following formula (1), hexamethylenetetramine and triethanolamine in a weight ratio of 1: 2, an ammonium compound containing ammonium carbonate and ammonium chloride in a weight ratio of 1: 1 at a weight ratio of 1: 0.25, 20 parts by weight of 2-butoxyethanol as a dispersing agent, 20 parts by weight of propylene glycol as a wetting agent and 220 parts by weight of water as a solvent were mixed to prepare a water-soluble rust activating agent.

[Chemical Formula 1]

In Formula 1, R ¹ , R ² , R ³ , R ⁴ , R ⁵ and R ⁶ are H.

(2)

In Formula 1, R ⁷ , R ⁸ , R ⁹ , and R ¹⁰ are H.

[Chemical Formula 4]

In the above formula (4), R ¹³ and R ¹⁴ are H, and n is a rational number satisfying the weight average molecular weight of the compound of -850,000.

Example  2 to 15 and Comparative Example  1 to 6

The rust inhibitor composition was prepared in the same manner as in Example 1 except that the content of the rust inhibitor was varied as shown in Table 1 below.

division Organic acid Anti-rust agent Content (parts by weight) Amine compound Amine, Ammonium Compound Weight Ratio (2)
(Parts by weight) Formula 1
(Parts by weight) Weight ratio ^{1 )} Weight ratio ^{2 )} Example 1 4 6.5 1: 1.6 5 1: 2 1: 0.25 Example 2 10 2 1: 0.2 5 1: 2 1: 0.25 Example 3 7.5 4.5 1: 0.6 5 1: 2 1: 0.25 Example 4 2 12 1: 6 5 1: 2 1: 0.25 Example 5 1.5 12 1: 8 5 1: 2 1: 0.25 Example 6 1.15 1.84 1: 1.6 5 1: 2 1: 0.25 Example 7 1.92 3.07 1: 1.6 5 1: 2 1: 0.25 Example 8 6.5 10.5 1: 1.6 5 1: 2 1: 0.25 Example 9 7.3 11.7 1: 1.6 5 1: 2 1: 0.25 Example 10 4 6.5 1: 1.6 One 1: 2 1: 0.25 Example 11 4 6.5 1: 1.6 9 1: 2 1: 0.25 Example 12 4 6.5 1: 1.6 5 1: 2 1: 0.2 Example 13 4 6.5 1: 1.6 5 1: 2 1: 4 Example 14 4 6.5 1: 1.6 5 1: 1.5 1: 0.25 Example 15 4 6.5 1: 1.6 5 1: 4 1: 0.25 Comparative Example 1 4 6.5 1: 1.6 5 1: 0.5 1: 0.25 Comparative Example 2 4 6.5 1: 1.6 5 1: 6 1: 0.25 Comparative Example 3 4 6.5 1: 1.6 0.3 1: 2 1: 0.25 Comparative Example 4 4 6.5 1: 1.6 10.5 1: 2 1: 0.25 Comparative Example 5 4 6.5 1: 1.6 5 1: 2 1: 0.05 Comparative Example 6 4 6.5 1: 1.6 5 1: 2 1: 5.5 1) The weight ratio represents the weight ratio of the compound of formula (2) to the compound of formula (1).
2) The weight ratio represents the weight ratio of hexamethylenetetramine and triethanolamine.

Experimental Example: Evaluation of Rust Inactivating Agent Composition

(1) Measurement of heavy metal content

The heavy metal contents of the compositions according to Examples 1 to 15 and Comparative Examples 1 to 6 of the present invention were measured and are shown in Table 2 below.

 (2) for brine Hearing power  evaluation

First, steel plates with a width of 5 cm and a length of 1 cm, which rust more than 70% of the surface, were used as specimens. Each of the above specimens was coated with 5 g of the composition according to Examples 1 to 15 and Comparative Examples 1 to 6 of the present invention and reacted for 1 hour. Lacquer was sprayed onto the surface of the specimen and dried for 2 hours. Then, the degree of corrosion of the specimen surface was evaluated for 240 hours while spraying the brine every 6 hours. In this case, when rust was generated in less than 1% of the surface area -?, When less than 5% of rust was generated, when 5 to 30% of rust occurred, and when rust exceeding 30% was marked -. This is shown in Table 2 below.

(3) Paint peeling evaluation

For each of the specimens after the completion of Experimental Example 1, paint peeling was evaluated. At this time, when no peeling occurred on the surface -?, When peeling occurred on the surface - indicated by x. This is shown in Table 2 below.

division Heavy metal content Hearing power exfoliation Pb (mg / kg) Cd (mg / kg) Hg (mg / kg) Cr (mg / kg) Example 1 Not detected Not detected Not detected Not detected ◎ ○ Example 2 Not detected Not detected Not detected Not detected △ ○ Example 3 Not detected Not detected Not detected Not detected ○ ○ Example 4 Not detected Not detected Not detected Not detected ◎ ○ Example 5 Not detected Not detected Not detected Not detected ○ × Example 6 Not detected Not detected Not detected Not detected ○ × Example 7 Not detected Not detected Not detected Not detected ○ ○ Example 8 Not detected Not detected Not detected Not detected ○ ○ Example 9 Not detected Not detected Not detected Not detected △ × Example 10 Not detected Not detected Not detected Not detected ○ ○ Example 11 Not detected Not detected Not detected Not detected ◎ ○ Example 12 Not detected Not detected Not detected Not detected ○ ○ Example 13 Not detected Not detected Not detected Not detected ○ ○ Example 14 Not detected Not detected Not detected Not detected ○ ○ Example 15 Not detected Not detected Not detected Not detected ◎ ○ Comparative Example 1 Not detected Not detected Not detected Not detected × ○ Comparative Example 2 Not detected Not detected Not detected Not detected △ × Comparative Example 3 Not detected Not detected Not detected Not detected × ○ Comparative Example 4 Not detected Not detected Not detected Not detected ○ × Comparative Example 5 Not detected Not detected Not detected Not detected △ ○ Comparative Example 6 Not detected Not detected Not detected Not detected - -

As can be seen from the above Table 2, Examples 1, 3, 4, 7, 8 and 10 to 15, which satisfy the content range and the weight ratio of the present invention, The radiant power was superior to that of Example 2, Example 5, Example 6, Example 9, and Comparative Examples 1 to 6, and peeling did not occur.

On the other hand, in Comparative Example 6, the rust inactivating agent coagulated and the operation was impossible.

Claims (14)

A water-soluble resin, an organic acid, a dispersant, and an antirust agent,
4 to 18 parts by weight of an organic acid, 6 to 35 parts by weight of a dispersing agent and 0.5 to 10 parts by weight of an antirusting agent based on 100 parts by weight of the water-soluble resin,
The rust inhibitor includes at least one selected from an amine compound and an ammonium compound, and contains an amine compound and an ammonium compound in a weight ratio of 1: 0.1 to 5,
The amine compound includes hexamethylenetetramine and triethanolamine in a weight ratio of 1: 1 to 5,
Wherein the ammonium compound comprises at least one member selected from the group consisting of ammonium carbonate, ammonium chloride, ammonium phosphate monobasic and ammonium sulfate, and the organic acid comprises a carboxylic acid and a compound represented by the following formula 1 in a weight ratio of 1: 0.4 to 7: Wherein the carboxylic acid comprises at least one compound selected from the group consisting of a compound represented by the following formula (2) and a compound represented by the following formula (3).
[Chemical Formula 1]

Wherein R ¹ , R ² , R ³ , R ⁴ , R ⁵ and R ⁶ are each independently H or a C ₁ to C ₅ straight-chain alkyl group or a C ₃ to C ₅ branched alkyl group,
(2)

Wherein R ⁷ , R ⁸ , R ⁹ and R ¹⁰ are each independently H or a straight chain alkyl group of C ₁ to C ₅ or a branched alkyl group of C ₃ to C ₅ ,
(3)

In the above formula (3), R ¹¹ and R ¹² are each independently H or a linear alkyl group having ₁ to ₅ carbon atoms or a branched alkyl group having ₃ to ₅ carbon atoms, and n is a rational number of 0 to 5. delete delete delete The water-soluble antioxidant composition according to claim 1, wherein the dispersant comprises at least one selected from the group consisting of 2-methoxyethanol, 2-butoxyethanol, 2-propoxyethanol and 2-ethoxyethanol. delete The water-soluble antioxidant composition according to claim 1, wherein the ammonium-based compound comprises at least two selected from ammonium carbonate, ammonium chloride, ammonium phosphate and ammonium sulfate. delete The water-soluble antioxidant composition according to claim 1, further comprising 6 to 35 parts by weight of a wetting agent and 180 to 260 parts by weight of a solvent based on 100 parts by weight of the water-soluble resin. 10. The method according to claim 9, wherein the wetting agent comprises at least one selected from glycerin, lactic acid and propylene glycol,
≪ / RTI > wherein the solvent comprises water. The water-soluble antioxidant composition according to claim 1, wherein the water-soluble resin is an acrylic water-soluble resin containing a methacrylic acid polymer. The water-soluble antioxidant composition according to claim 1, wherein the water-soluble resin comprises a compound represented by the following formula (4).
[Chemical Formula 4]

In Formula 4, R ¹³ and R ¹⁴ are each independently a hydrogen atom or a C ₁ to C ₅ alkyl group, and n is a rational number satisfying a weight average molecular weight of the compound of 500,000 to 1,000,000. 12. A water-soluble rust-deactivating agent comprising the water-soluble rust inhibitor composition according to any one of claims 1, 5, 7 and 9 to 12 and having a specific gravity of 0.95 to 1.1. A method for applying a water-soluble antioxidant of claim 13, wherein the water-soluble antioxidant of claim 13 is applied at a thickness of 10 to 18 占 퐉 to form a water-soluble antioxidant film.

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