KR102248349B1 - Cleaner composition with degreasing and rust removal - Google Patents

Abstract

Provided, in the present invention, is a cleaning composition capable of performing degreasing and rust-removing at the same time by comprising: a linear alkyl benzene sulfonic acid; a complex organic-inorganic acid; an ammonium chloride; a sodium chloride; alcohols, C9-11, ethoxylated; and water.

Description

A cleaning composition having both degreasing and degreasing properties {CLEANER COMPOSITION WITH DEGREASING AND RUST REMOVAL}

The present invention relates to a cleaning composition having the properties of degreasing and degreasing at the same time. Specifically, the present invention relates to a composition for degreasing and decleaning the steel material during the cleaning process of the steel material for galvanizing or zinc-aluminum composite coating coating.

In general, prior to plating or applying a primer, a surface polishing agent, a surface active agent, an adhesive, or the like to a steel material, a degreasing process for removing oil from the surface of the steel material and a decleaning process for removing rust are respectively performed. In particular, for the purpose of preventing corrosion of steel materials, electro-galvanizing, hot dip galvanizing, zinc-aluminum composite film coating, etc. are applied to steel materials, such as electro-galvanizing, hot dip galvanizing, zinc-aluminum composite film coating, etc. Prior to the implementation, if the degreasing and degreasing process is not properly performed, the adhesion, adhesion, and adhesion between the steel material and the galvanized layer are deteriorated, so that the corrosion prevention effect of the steel material is not sufficiently implemented. There was.

In general, degreasing and degreasing are carried out by supporting an object to be plated on an alkaline solution composed of an alkali component, a surfactant, or an acidic solution composed of sulfuric acid, hydrochloric acid, etc., or spraying the alkaline solution or an acidic solution onto the object. .

For example, in Korean Patent Registration No. 10-0767761, cast iron to be plated is applied to an acid solution mixed in a ratio of 10% by weight of sulfuric acid, 5% by weight of hydrochloric acid, 10% by weight of surfactant, and 75% by weight of water. Disclosed is a pickling process to be immersed. In addition, Korean Patent Registration No. 10-17153752 discloses a composition for removing rust containing potassium hydroxide and ammonium hydroxide.

However, the conventional composition for degreasing or deoxidizing contains components of strong acids and strong bases such as sulfuric acid, hydrochloric acid, sodium hydroxide, and potassium hydroxide, so there was a problem that a large amount of wastewater was generated in the process of degreasing and deoxidizing, and due to the generation of wastewater. There was a problem of increasing environmental pollution. In addition, when the object is a steel material, hydrogen embrittlement of the steel material is generated due to sulfuric acid, salt phase, etc., which are mostly contained in the degreasing composition or the deoxidizing composition, and there is a problem that the strength and durability of the steel material are deteriorated.

In particular, in the past, as compositions composed of different components must be used for degreasing and de-cleaning, the degreasing and de-cleaning processes have to be performed respectively, so the degreasing and de-cleaning processes are cumbersome and complex, and the generation of wastewater is increased, and the two compositions are used. There was a problem that the cost increased as each had to be prepared.

Accordingly, there is a need to develop a cleaning composition capable of simultaneously realizing degreasing and deoxidizing effects while excluding the use of sulfuric acid, hydrochloric acid, sodium hydroxide, potassium hydroxide, and the like.

Korean Patent Registration No. 10-0767761 Korean Patent Registration No. 10-17153752

An object of the present invention is to provide a cleaning composition capable of simultaneously realizing degreasing and deoxidizing effects while excluding the use of sulfuric acid, hydrochloric acid, sodium hydroxide, potassium hydroxide, and the like.

The object of the present invention is not limited to the above-described technical problem, and another technical problem may be derived from the following description.

In order to achieve the above object, in the present invention, as a cleaning composition for degreasing and decleaning, linear alkylbenzene sulfonic acid, complex organic-inorganic acid, ammonium chloride, sodium chloride, C9- 11 It includes alcohol ethoxylate (Alcohols, C9-11, ethoxylated) and water, and the complex organic-inorganic acid includes an organic acid and an inorganic acid, and provides a cleaning composition for degreasing-decleaning.

The cleaning composition is based on the total weight of the cleaning composition, linear alkylbenzene sulfonic acid (Linear Alkyl Benzene Sulfonic Acid) 1 to 5% by weight, complex organic-inorganic acid 28 to 35% by weight, ammonium chloride (Ammonium Chloride) 5 to 13% by weight, 1 to 7% by weight of sodium chloride, 1 to 4% by weight of C9-11 alcohol ethoxylate (Alcohols, C9-11, ethoxylated), and the balance of water.

The complex organic-inorganic acid is formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, acrylic acid, Crotonic acid, Oxalic acid, Malonic acid, Succinic acid, Glutaric acid, Cnnamic acid, Glycolic acid, Citric acid ( Citric acid) and an organic acid containing at least two selected from the group consisting of levulinic acid; And inorganic acids including at least one selected from the group consisting of phosphoric acid and phosphorous acid.

The complex organic-inorganic acid is an organic acid including the citric acid and the levulinic acid; And inorganic acids including the phosphoric acid.

The cleaning composition may further include carboxymethyl cellulose.

The cleaning composition includes one or more selected from the group consisting of antifoaming agents, surfactants, auxiliary surfactants, dispersion stabilizers, preservatives, thickeners, pH adjusters, organic solvents, shrinkage inhibitors, antioxidants, corrosion inhibitors, antistatic agents, and solubility accelerators. It may contain more.

The cleaning composition of the present invention can achieve degreasing and deodorizing effects at the same time. Accordingly, in the prior art, the degreasing process and the de-cleaning process of the object to be cleaned have been respectively performed, but when the cleaning composition of the present invention is used, the degreasing process and the de-cleaning process can be simultaneously performed, which can be economical.

In addition, the cleaning composition of the present invention excludes the use of hydrochloric acid, sulfuric acid, sodium hydroxide, and potassium hydroxide, so that the generation of wastewater generated in the degreasing and decleaning process can be prevented by the above components.

In addition, when the object to be cleaned is a steel material, hydrogen embrittlement occurred due to the use of hydrochloric acid and sulfuric acid in the past, but in the case of the present invention, the use of hydrochloric acid, sulfuric acid, etc. is excluded. Can be prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention.

The terms or words used in the specification and claims of the present invention are not limited to a conventional or dictionary meaning, and the inventor can appropriately define the concept of terms in order to describe his own invention in the best way. Based on the principle, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Throughout the specification of the present invention, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. .

In the entire specification of the present invention, "washing" may mean "removing rust, foreign matter, oil, etc. on the surface of a steel material". Specifically, removing the rust may mean "de-cleaning", and removing the oil may mean "degreasing".

In the entire specification of the present invention, "A and/or B" means A or B, or A and B.

In the entire specification of the present invention, "degreasing-decleaning cleaning composition" means a cleaning composition having both degreasing performance and decleaning performance.

In the entire specification of the present invention, "degreasing" means removing oil from the surface of an object to be cleaned.

In the entire specification of the present invention, "de-cleaning" means removing rust on the surface of an object to be cleaned.

Hereinafter, the present invention has been described in detail, but the present invention is not limited thereto.

In the present invention, a cleaning composition having both degreasing and derusting properties is provided.

In one embodiment of the present invention, linear alkylbenzene sulfonic acid (Linear Alkyl Benzene Sulfonic Acid), complex organic-inorganic acid, ammonium chloride (Ammonium Chloride), sodium chloride (Sodium Chloride), C9-11 alcohol ethoxylate (Alcohols, C9-11 , ethoxylated) and water. Specifically, the present embodiment provides a cleaning composition capable of simultaneously degreasing and decleaning an object to be cleaned, such as a steel material, zinc plating, and various coating films.

The steel material is a pipe flow such as a steel plate for water supply, a conduit pipe, a steel plate for piping, a structural steel plate, and a steel plate scaffolding; Thin plates including galvanized iron plates, etc.; Wires including wires, steel wires, wire ropes, wire strands, stranded wires, wire meshes, barbed wires, gabions, exterior wires, core wires for steel core aluminum stranded wires, and the like; Rolled steels including steel sheets, section steels, flat steels, bar steels, and the like; Processed products including steel towers, bridges, steel frames, shipbuilding brackets, temporary wire brackets, tanks, and the like; Bolts and nuts including various bolts, nuts, coaters, washers, and the like; Cast iron products, cast steel products, forged steel products, pipe fittings, cast and forged products including metal fittings for insulators; It may include, but is not limited thereto.

Hereinafter, according to the present embodiment, a cleaning composition having both degreasing and degreasing properties will be described in detail.

The cleaning composition of this embodiment is linear alkylbenzene sulfonic acid (Linear Alkyl Benzene Sulfonic Acid), complex organic-inorganic acid, ammonium chloride (Ammonium Chloride), sodium chloride (Sodium Chloride), C9-11 alcohol ethoxylate (Alcohols, C9-11, ethoxylated) and water. Specifically, the cleaning composition of this embodiment is based on the total weight of linear alkylbenzene sulfonic acid (Linear Alkyl Benzene Sulfonic Acid) 1 to 5% by weight, complex organic-inorganic acid 28 to 35% by weight, ammonium chloride (Ammonium Chloride) 5 to 13% by weight %, 1 to 7% by weight of sodium chloride, 1 to 4% by weight of C9-11 alcohol ethoxylate (Alcohols, C9-11, ethoxylated), and the balance of water.

Linear Alkyl Benzene Sulfonic Acid (LABSA) is prepared from sulfonated linear alkyl benzene, is a yellow or brown liquid, and has excellent biodegradability.

Based on the total weight of the cleaning composition of the present embodiment, linear alkylbenzenesulfonic acid may be included in an amount of 1 to 5% by weight, specifically 1.5 to 4% by weight, and more specifically 2 to 3% by weight.

If the amount of linear alkylbenzenesulfonic acid is less than 1% by weight based on the total weight of the cleaning composition of the present embodiment, the degreasing and deodorization effect of the subject is lowered than when containing 1 to 5% by weight of linear alkylbenzenesulfonic acid. There may be a problem. On the other hand, when containing more than 5% by weight of linear alkylbenzenesulfonic acid based on the total weight of the cleaning composition of the present embodiment, the degreasing and derusting effect is lowered than when containing 1 to 5% by weight of linear alkylbenzenesulfonic acid, There may be a problem that the formulation stability of the composition is deteriorated.

The complex organic-inorganic acid may include at least two or more known organic acids, and may include at least one or more known inorganic acids at the same time, but is not particularly limited thereto.

For example, complex organic-inorganic acids include formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, and acrylic acid. ), Crotonic acid, Oxalic acid, Malonic acid, Succinic acid, Glutaric acid, Cnnamic acid, Glycolic acid, An organic acid containing at least two selected from the group consisting of citric acid and levulinic acid; And an inorganic acid including at least one selected from the group consisting of phosphoric acid and phosphorous acid, but is not limited thereto.

More specifically, the complex organic-inorganic acid may include citric acid, levulinic acid and phosphoric acid.

More specifically, the complex organic-inorganic acid may include citric acid, levulinic acid, and phosphoric acid in a weight ratio of 1: 0.1 to 0.5: 3 to 5. In particular, when the complex organic-inorganic acid of the present embodiment contains citric acid, levulinic acid, and phosphoric acid in a weight ratio of 1: 0.1 to 0.5: 3 to 5, the degreasing and degreasing effect may be further improved.

Based on the total weight of the cleaning composition of the present embodiment, the complex organic-inorganic acid may be included in an amount of 28 to 35% by weight, specifically 29 to 33% by weight, and more specifically 30 to 31% by weight.

If, based on the total weight of the cleaning composition of the present embodiment, when the complex organic-inorganic acid is included in an amount of less than 28% by weight, the degreasing and deodorizing effect is lowered than when the complex organic-inorganic acid is included in an amount of 28 to 35% by weight. There may be. On the other hand, when containing more than 35% by weight of the complex organic-inorganic acid based on the total weight of the cleaning composition of the present embodiment, the degreasing and deoxidizing effect is lowered than when the complex organic-inorganic acid is included in 28 to 35% by weight, There may be a problem that the formulation stability of the composition is deteriorated. In particular, there may be a problem in that precipitates or aggregates are formed by side reactions of each component, and there may be a problem in that solubility and miscibility of other components other than complex organic-inorganic acids are deteriorated.

Ammonium Chloride is a salt of ammonia that is pure white, water-soluble crystals.

Ammonium chloride may be included in an amount of 5 to 13% by weight, specifically 7 to 10% by weight, and more specifically 8 to 9% by weight, based on the total weight of the cleaning composition of the present embodiment.

If, in the case of containing less than 5% by weight of ammonium chloride based on the total weight of the cleaning composition of the present embodiment, there may be a problem in that the degreasing and deoxidizing effect is lowered than when containing 5 to 13% by weight of ammonium chloride. . On the other hand, when containing more than 13% by weight of ammonium chloride based on the total weight of the cleaning composition of the present embodiment, the degreasing and deodorizing effect is lowered than when containing 5 to 13% by weight of ammonium chloride, and formulation stability of the composition This decreases, and there may be a problem that the acidity of the composition increases.

Sodium Chloride is a compound of sodium and chlorine.

Sodium chloride may be included in an amount of 1 to 7% by weight, specifically 2 to 6.5% by weight, and more specifically 5 to 6% by weight, based on the total weight of the cleaning composition of the present embodiment.

If, based on the total weight of the cleaning composition of the present embodiment, sodium chloride is included in an amount of less than 1% by weight, there may be a problem that the degreasing and deoxidizing effects are lowered than when sodium chloride is included in an amount of 1 to 7% by weight. On the other hand, when containing more than 7% by weight of sodium chloride based on the total weight of the cleaning composition of the present embodiment, the degreasing and deodorizing effect is lowered than when containing 1 to 7% by weight of sodium chloride, and the formulation stability of the composition is lowered. And, there may be a problem of increasing the acidity of the composition.

C9-11 alcohol ethoxylate (Alcohols, C9-11, ethoxylated) is a component mainly used as a surfactant, and may serve to improve the cleaning effect of the cleaning composition of the present embodiment. Specifically, C9-11 alcohol ethoxylate may play a role in removing foreign substances and oil. The C9-11 alcohol ethoxylate may also be referred to as alcohol, C9-11, and ethoxylate.

C9-11 alcohol ethoxylate of 1 to 4% by weight, specifically 1.5 to 3.5% by weight, more specifically 2 to 3% by weight based on the total weight of the cleaning composition of the present embodiment may be included.

If, based on the total weight of the cleaning composition of the present example, when containing less than 1% by weight of C9-11 alcohol ethoxylate, than when containing 1 to 4% by weight of C9-11 alcohol ethoxylate, degreasing and There may be a problem that the deodorizing effect is lowered. On the other hand, when containing more than 4% by weight of C9-11 alcohol ethoxylate based on the total weight of the cleaning composition of the present embodiment, than when containing 1 to 4% by weight of C9-11 alcohol ethoxylate, degreasing and There may be a problem that the deodorizing effect is lowered, and the formulation stability of the composition is lowered.

The cleaning composition of this embodiment may further include carboxymethyl cellulose. The carboxymethyl cellulose refers to the substitution of the hydroxy group at the C6 position of the glucose residue constituting the cellulose with a carboxymethyl group.

The carboxymethyl cellulose of this embodiment may have a number average molecular weight (M _n ) of 50,000 to 70,000 g/mol.

More specifically, the carboxymethyl cellulose of this embodiment may have a number average molecular weight (M _n ) of 60,000 to 70,000 g/mol. In particular, when the number average molecular weight (M _n ) of the carboxymethyl cellulose of the present embodiment is 60,000 to 70,000 g/mol, remarkably excellent degreasing and decleaning effects may be implemented.

The cleaning composition of the present embodiment may further improve degreasing and decleaning effects by including 1 to 3% by weight of carboxymethyl cellulose based on the total weight.

If the amount of carboxymethyl cellulose is less than 1% by weight based on the total weight of the cleaning composition of the present embodiment, the degree of improvement of the degreasing and derusting effect is insignificant compared to the case of including 1 to 3% by weight of carboxymethylcellulose. There may be. On the other hand, when containing more than 3% by weight of carboxymethyl cellulose based on the total weight of the cleaning composition of the present embodiment, rather than containing 1 to 3% by weight of carboxymethyl cellulose, rather than the case where the degreasing and derusting effect is lowered, the composition There may be a problem that the usability decreases due to an increase in the viscosity of.

The cleaning composition of this embodiment is one selected from the group consisting of an antifoaming agent, a surfactant, an auxiliary surfactant, a dispersion stabilizer, a preservative, a thickener, a pH adjuster, an organic solvent, an anti-shrink agent, an antioxidant, a corrosion inhibitor, an antistatic agent, and a solubility accelerator. It may further include more.

Hereinafter, the electro-galvanizing method of the steel material of the present invention will be described in detail through Examples, Comparative Examples, and Experimental Examples. Since these examples are for illustrative purposes only, the scope of the present invention is not to be construed as being limited by these examples.

[Example]

Examples 1 to 4

A cleaning composition was prepared by mixing each component in a composition according to Table 1 [unit: wt%]. In this case, the complex organic-inorganic acid in Table 1 was a mixture of citric acid and levulinic acid in the mixing ratio of Table 2 [unit: weight ratio].

Example 1 Example 2 Example 3 Example 4 Linear alkylbenzenesulfonic acid 3 4 4 4 Complex organic-inorganic acid 30 28 28 28 Ammonium chloride 9 12 12 12 Sodium chloride 6 3 3 3 C9-11 alcohol ethoxylate 3 4 4 4 water to.100

In Table 1, linear alkylbenzenesulfonic acid is CAS Number 68584-22-5, ammonium chloride is CAS Number 12125-02-9, sodium chloride is CAS Number 7647-14-5, and C9-11 alcohol ethoxylate is It is CAS Number 68439-46-3.

Example 1 Example 2 Example 3 Example 4 Citric acid One One One One Levulinic acid 0.3 0.3 0.1 0.5 Phosphoric acid 4 4 4 4

Example 5

It was prepared in the same manner as in Example 1, except that 2% by weight of carboxymethylcellulose was further included based on the total weight of the composition. In this case, the carboxymethyl cellulose was used having a number average molecular weight (M _n ) of 65,000.

Example 6

It was prepared in the same manner as in Example 1, except that 5% by weight of carboxymethylcellulose was further included based on the total weight of the composition. In this case, the carboxymethyl cellulose was used having a number average molecular weight (M _n ) of 65,000.

Example 7

It was prepared in the same manner as in Example 1, except that 2% by weight of carboxymethylcellulose was further included based on the total weight of the composition. In this case, the carboxymethyl cellulose was used having a number average molecular weight (M _n ) of 40,000.

Example 8

It was prepared in the same manner as in Example 1, except that 2% by weight of carboxymethylcellulose was further included based on the total weight of the composition. In this case, the carboxymethyl cellulose was used having a number average molecular weight (M _n ) of 80,000.

[Comparative Example]

Comparative Examples 1 to 10

A cleaning composition was prepared in the same manner as in Example 3, except that it conforms to the composition of Table 3 [unit: wt%].

ratio
School
Yes
One ratio
School
Yes
2 ratio
School
Yes
3 ratio
School
Yes
4 ratio
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Yes
5 ratio
School
Yes
6 ratio
School
Yes
7 ratio
School
Yes
8 ratio
School
Yes
9 ratio
School
Yes
10 Linear alkylbenzenesulfonic acid 0.5 10 4 4 4 4 4 4 4 4 Complex organic-inorganic acid 28 28 23 40 28 28 28 28 28 28 Ammonium chloride 12 12 12 12 One 18 12 12 12 12 Sodium chloride 3 3 3 3 3 3 0.5 12 3 3 C9-11 alcohol ethoxylate 4 4 4 4 4 4 4 4 0.5 10 water to.100

[Experimental Example]

Experimental Example 1: Evaluation of degreasing performance

A specimen was prepared by applying oily magic (monami) to a stainless steel substrate in a size of 5 cm in width and 5 cm in length.

After the specimen was immersed in the cleaning composition of Example 1 for about 10 minutes, the specimen was taken out and rinsed with water, and the area of the oily magic remaining in the specimen was measured.

Table 4 [unit: %] shows the ratio of the area where the oily magic remains based on the initial area (5 cm wide and 5 cm long).

Using the same method as described above, the degreasing performance of the cleaning compositions of Examples 2 to 8 and Comparative Examples 1 to 10 was evaluated, and the results are shown in Table 4.

Remaining area percentage (%) Remaining area percentage (%) Example 1 5 Comparative Example 1 40 Example 2 8 Comparative Example 2 45 Example 3 10 Comparative Example 3 60 Example 4 10 Comparative Example 4 55 Example 5 0 Comparative Example 5 50 Example 6 8 Comparative Example 6 40 Example 7 3 Comparative Example 7 55 Example 8 3 Comparative Example 8 45 Comparative Example 9 35 Comparative Example 10 30

Referring to Table 4, it can be seen that in the case of the embodiment according to the present embodiment, the removal efficiency of the oily magic is higher than that of the comparative example not according to the present embodiment. That is, it means that the composition according to the present embodiment has excellent degreasing performance.

Experimental Example 2: Evaluation of decleaning performance

Steel speed (SS41) specimen (width 30 mm, length 50 mm, thickness 2 mm), ASTM B 117 standard (pH: 6.5 ~ 7.2, chamber temperature: 35 ℃, 5% NaCl solution spray amount: 1 ~ 2 mL/h ), the specimen was forcibly damaged by exposing it to a neutral salt spray tester for about 144 hours, so that rust was generated on the entire surface of the specimen.

Thereafter, the rust-generated specimen was immersed in the cleaning composition of Example 1 for about 30 minutes, taken out, washed with running water, and then visually observed whether there was residual rust.

According to the above, the results of observing the residual rust with the naked eye were evaluated according to the following criteria, and the results are shown in Table 5.

-When all rust has been removed: ○

-If some rust remains (less than 20% of the total area): △

-When rust is hardly removed: ×

Using the same method as described above, the cleaning compositions of Examples 2 to 8 and Comparative Examples 1 to 10 were evaluated for derusting (rust removal) performance, and the results are shown in Table 5.

Degree of rust removal Degree of rust removal Example 1 ○ Comparative Example 1 × Example 2 ○ Comparative Example 2 × Example 3 △ Comparative Example 3 × Example 4 △ Comparative Example 4 × Example 5 ○ Comparative Example 5 × Example 6 ○ Comparative Example 6 × Example 7 ○ Comparative Example 7 × Example 8 ○ Comparative Example 8 × Comparative Example 9 × Comparative Example 10 ×

Referring to Table 5, it can be seen that in the case of the example according to the present example, the rust removal effect is higher than that of the comparative example not according to the present example. That is, it means that the composition according to the present embodiment has excellent deodorization performance.

Experimental Example 3: Evaluation of adhesion of electro zinc plating

In order to confirm the degreasing and deoxidizing effect of the cleaning composition, in place of the degreasing step using hydrochloric acid, nitric acid, sulfuric acid, etc. and the degreasing step using calcium hydroxide, sodium hydroxide, etc. in the conventional electro zinc plating process, the cleaning composition of Example 1 The steps of degreasing and decleaning were performed with a furnace.

In more detail, first, as a steel material to be plated, a steel sheet (SS40) was prepared, and then the steel sheet was immersed in hot water at 70°C.

The steel plate was taken out of the water, and the steel plate was completely immersed in the cleaning composition of Example 1, and immersed for about 5 minutes. At this time, the temperature of the cleaning composition was about 50 °C.

Thereafter, the steel sheet was washed twice with water and then neutralized with an alkali solution. Next, using an alkaline plating solution containing 12 g/L of zinc oxide and 140 g/L of sodium hydroxide, 20 g/L of a smoothing agent, 5 mL/L of a brightener, and 0.5 mL/L of a nonionic surfactant, the temperature was 20 Electro-galvanization was performed under the conditions of -40°C and current density of 1 to 5 A/dm ^{2 to form a galvanized layer.}

Using the steel plate on which the electrogalvanizing layer was formed according to the above, according to the CROSS-CUT test method (ASTM D 3359 test standard), the adhesion between the steel plate and the electrogalvanizing layer was repeatedly evaluated 10 times, and the average value thereof is shown in Table 6 Shown in. The adhesion was evaluated as OB ~ 5B, and the closer to 5B, the better adhesion.

In place of the cleaning composition of Example 1, after using the cleaning compositions of Examples 2 to 8 and Comparative Examples 1 to 10, the adhesion between the steel sheet and the electro-galvanizing layer was evaluated when electro-galvanizing was performed. Is shown in Table 6.

Adherence Adherence Example 1 4.2 B Comparative Example 1 1.5 B Example 2 4.0 B Comparative Example 2 1.5 B Example 3 3.7 B Comparative Example 3 1.0 B Example 4 3.7 B Comparative Example 4 1.0 B Example 5 5.0 B Comparative Example 5 1.5 B Example 6 4.0 B Comparative Example 6 1.5 B Example 7 4.5 B Comparative Example 7 1.0 B Example 8 4.5 B Comparative Example 8 1.5 B Comparative Example 9 2.0 B Comparative Example 10 2.0 B

Referring to Table 6, it can be seen that in the case of the embodiment according to the present embodiment, the adhesion between the steel sheet and the electrogalvanizing layer is superior to that of the comparative example not according to the present embodiment. That is, in the case of using the cleaning composition according to the embodiment of the present embodiment, it means that the steel sheet is properly degreased and decleaned so that the electrogalvanizing layer is well formed.

As described above, the description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains can easily transform into other specific forms without changing the technical spirit or essential features of the present invention. You can understand. Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

Claims (6)

As a cleaning composition for degreasing and degreasing,
Linear Alkyl Benzene Sulfonic Acid, complex organic-inorganic acids, ammonium chloride, sodium chloride, C9-11 alcohol ethoxylates (Alcohols, C9-11, ethoxylated) and water And
The complex organic-inorganic acid includes an organic acid and an inorganic acid,
The cleaning composition is based on the total weight of the cleaning composition, linear alkylbenzene sulfonic acid (Linear Alkyl Benzene Sulfonic Acid) 1 to 5% by weight, complex organic-inorganic acid 28 to 35% by weight, ammonium chloride (Ammonium Chloride) 5 to 13% by weight, Sodium Chloride (Sodium Chloride) 1 ~ 7% by weight, C9-11 alcohol ethoxylate (Alcohols, C9-11, ethoxylated) 1 ~ 4% by weight, characterized in that it comprises a residual amount of water, degreasing-decleaning cleaning composition .
delete The method of claim 1,
The complex organic-inorganic acid is
Formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, acrylic acid, crotonic acid , Oxalic acid, Malonic acid, Succinic acid, Glutaric acid, Cnnamic acid, Glycolic acid, Citric acid, and levulin An organic acid containing at least two selected from the group consisting of acids (Levulinic acid); And
Phosphoric acid (Phosphoric acid) and phosphorous acid (Phosphorous acid) inorganic acid containing at least one selected from the group consisting of; characterized in that it comprises, degreasing-cleaning composition for decleaning.
The method of claim 3,
The complex organic-inorganic acid is
An organic acid including the citric acid and the levulinic acid; And
Inorganic acid containing the phosphoric acid; characterized in that it contains, degreasing-cleaning composition for cleaning.
The method of claim 1,
The cleaning composition is
Characterized in that it further comprises carboxymethyl cellulose, degreasing-cleaning composition for decleaning.
The method of claim 1,
The cleaning composition is
Defoamers, surfactants, auxiliary surfactants, dispersion stabilizers, preservatives, thickeners, pH adjusters, organic solvents, anti-shrinkage agents, antioxidants, corrosion inhibitors, antistatic agents, and further comprising at least one selected from the group consisting of solubility accelerators, Cleaning composition for degreasing-decleaning.