KR20200108990A - Eco-friendly detackification agent for paint having excellent viscocity reduction effect and treatment method of the painting booth circulating water using the same - Google Patents

Abstract

The present invention relates to an eco-friendly composition for removing paint viscosity having excellent paint viscosity removal performance, and to a treatment method of painting booth circulating water using the same and, more specifically, to an eco-friendly composition for removing paint viscosity having excellent paint viscosity removal performance while not emitting formaldehyde, and to a treatment method of painting booth circulating water using the same.

Description

Eco-Friendly DETACKIFICATION AGENT FOR PAINT HAVING EXCELLENT VISCOCITY REDUCTION EFFECT AND TREATMENT METHOD OF THE PAINTING BOOTH CIRCULATING WATER USING THE SAME}

The present invention relates to a composition for removing viscosity of eco-friendly paints with excellent paint viscosity removal performance, and a method for treating circulating water in a painting booth using the same, and more specifically, to an eco-friendly paint viscosity with excellent paint viscosity removal performance without releasing formaldehyde. It is to provide a removal composition and a treatment method of circulating water in a painting booth using the same.

For the painting of automobiles, automobile parts, electronic products, electronic parts, etc., a wet spray painting process is widely applied.

The paint used in the painting process is 　 characteristics 　 has strong adhesion 　 sticky 　 spray 　 equipment 　 surface 　 polluted 　, especially due to the excessive 　 sprayed 　 due to the adhesion of the paint under the 　Because it is 　precipitated and solidified in a strainer 　, there is a problem that 　contaminates 　 equipment 　 works as a 　 factor that 　 paints 　 booth 　stable 　 inhibits operation 　. In addition, in general, the retention rate of 　 sprayed 　 paint is 　 50 　 to 90% 　, and the remaining 　 10 to 50% 　 paint is 　 excessive 　 sprayed 　 is a waste requiring removal.

In order to remove the oversprayed paint in this way, the booth uses circulating water to collect and treat the oversprayed paint 　.If this 　 　 paint accumulates in the circulating water 　 causes a lot of problems in the facility and work process, and In this case, there was a problem in that 　continuous 　 　 had to be used for more than a certain period of time 　 　 excessive 　 sprayed 　 depending on the efficiency 　 processing 　 　 circulating water 　 use 　 lengthened the period.

In order to solve this problem, technology development for preparing a composition for removing viscosity of a paint has been widely progressed. Currently commercially available viscosity remover compositions are aluminum-based inorganic substances (brand name: DK-4000, manufacturer; Sampoong Tritech), clay-based (brand name: DK-5000, manufacturer; Sampoong Tritech) and melamine based on organic substances. Three types of formaldehyde resins (trade name: PK-3830 melamine, manufacturer; Sampoong Tritech) are the mainstream. Inorganic aluminum and clay types do not detect formaldehyde, but aluminum types are mainly used for dispersion, and clay types. Is also used for flotation, but both products have excellent cohesive reactions, but their use is limited due to the remarkably poor viscous removal performance, and it is not economical, and can be used for flotation, but it is not specialized in flotation.

Among these three products, melamine formaldehyde resin-based viscosity remover compositions account for most of the viscosity removers distributed in Korea, and are widely used in floating foods, but as raw materials, formaldehyde (formalin; 35-37% formaldehyde aqueous solution, paraform) As a product synthesized using aldehyde), formaldehyde, which is a hazardous substance, is released in manufacturing, use, storage, and handling, and is exposed to workers, users, and the atmosphere, causing deterioration of the working environment and the surrounding environment.

Republic of Korea Patent Publication 10-2002-0045647

In order to solve the above problems, the object of the present invention is eco-friendly because formaldehyde is not emitted, and effects such as prevention of contamination of facilities such as piping pumps in booths, reduction of coating defects, improvement of the safety and environment of workers, and reduction of cleaning personnel. It is to provide an eco-friendly composition for removing viscosity of paint that can be obtained and a method for treating circulating water in a painting booth using the same.

In addition, another object of the present invention is that formaldehyde is not released, so it is safe and eco-friendly, and it is superior in viscosity removal performance and cohesive flotation than existing products, so that it is difficult to treat 　high viscosity 　 paint (automobile 　 medium, 　 primer 　 paint, phthalic acid-based To provide a composition for removing viscosity of eco-friendly paints with excellent viscosity removal efficiency of paints, 　UV paints, 　water-based paints, etc.

The composition for removing viscosity of an eco-friendly paint according to the present invention may include starch, water-soluble polyvinyl alcohol, polyaluminum chloride, aluminum chlorohydrate, and a residual amount of solvent.

In the composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention, the composition for removing viscosity of an eco-friendly paint may further include any one or more components selected from amino alcohol-based compounds and polydiallyldimethylammonium chloride.

Especially preferably, the composition for removing viscosity of eco-friendly paints according to the present invention is 0.1 to 5 wt% of starch, 0.1 to 5 wt% of water-soluble polyvinyl alcohol, 2 to 20 wt of polyaluminum chloride, based on the total weight of the composition for removing eco-friendly paint viscosity. %, aluminum chlorohydrate 2 to 20 wt%, and a solvent 60 to 95 wt%.

In the composition for removing viscosity of eco-friendly paints according to an embodiment of the present invention, the composition for removing viscosity of eco-friendly paints is an amino alcohol-based compound and/or polydiallyldimethylammonium chloride each independently 0.1 to 5 wt% in the total composition It may contain more.

The composition for removing viscosity of eco-friendly paints according to the present invention comprises 0.5 to 3 wt% of starch, 0.5 to 3 wt% of water-soluble polyvinyl alcohol, 5 to 15 wt% of polyaluminum chloride, based on the total weight of the composition for removing eco-friendly paint viscosity, In the case of containing 5 to 15 wt% of aluminum chlorohydrate and 70 to 85 wt% of the solvent, it is particularly good to better achieve the object of the present invention.

In the composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention, the composition for removing viscosity of an eco-friendly paint may further include an additive.

The coating booth circulating water treatment method according to the present invention comprises the steps of adding the eco-friendly paint viscosity removal composition to circulating water; And removing the generated sludge from the circulating water.

The eco-friendly composition for removing viscosity of paint and the method for treating circulating water in a painting booth using the same according to an embodiment of the present invention is eco-friendly because formaldehyde is not released even during long-term use and storage, and prevents contamination of facilities such as piping pumps in the booth, reduces coating defects, There is an advantage in that it is possible to obtain effects such as improvement of worker's safety and environment, and reduction of cleaning manpower.

In addition, the composition for removing viscosity of eco-friendly paints according to an embodiment of the present invention and the method for treating circulating water in a painting booth using the same, are safe and eco-friendly because formaldehyde is not released, and viscosity removal performance and cohesive injury performance are more than those of existing products. This is excellent and has the advantage that the period of use of the circulating water of the painting booth is significantly increased.

Hereinafter, the present invention will be described in more detail through specific examples or examples including the accompanying drawings. However, the following specific examples or examples are only one reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

In addition, unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terms used in the description in the present invention are merely intended to effectively describe specific embodiments and are not intended to limit the present invention.

In addition, the singular form used in the specification and the appended claims may be intended to include the plural form unless otherwise indicated in the context.

The composition for removing the viscosity of an eco-friendly paint according to the present invention does not release formaldehyde, so it is safe and eco-friendly, and has excellent viscosity removal efficiency of the paint, so that the paint can be effectively removed when introduced into the circulating water of the painting line.

The composition for removing viscosity of an eco-friendly paint according to the present invention includes starch, water-soluble polyvinyl alcohol, polyaluminum chloride, aluminum chlorohydrate, and a residual amount of a solvent.

Particularly preferably, the composition for removing viscosity of eco-friendly paints according to the present invention is 0.1 to 5 wt% of starch, 0.1 to 5 wt% of water-soluble polyvinyl alcohol, 2 to 20 of polyaluminum chloride based on the total weight of the eco-friendly paint viscosity removing composition. wt%, 2 to 20 wt% of aluminum chlorohydrate, and 60 to 95 wt% of a solvent may be included.

In the composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention, the composition for removing viscosity of an eco-friendly paint may further include any one or more components selected from amino alcohol-based compounds and polydiallyldimethylammonium ide.

In the composition for removing viscosity of eco-friendly paints according to an embodiment of the present invention, the amino alcohol-based compound and/or polydiallyldimethylammonium chloride in the composition for removing viscosity of eco-friendly paints are each independently 0.1 to 5 wt% in the total composition It may contain more.

The composition for removing viscosity of eco-friendly paints according to the present invention comprises 0.5 to 3 wt% of starch, 0.5 to 3 wt% of water-soluble polyvinyl alcohol, 5 to 15 wt% of polyaluminum chloride, based on the total weight of the composition for removing eco-friendly paint viscosity, In the case of containing 5 to 15 wt% of aluminum chlorohydrate and 70 to 85 wt% of the solvent, it is particularly good to better achieve the object of the present invention.

When an aspect of the present invention is described in detail, the following specific examples may be given, but this is only an example for specific illustration and is not limited thereto, and the embodiments of the present invention described above can be variously described.

The composition for removing viscosity of eco-friendly paints according to the first aspect of the present invention includes 0.1 to 5 wt% of starch, 0.1 to 5 wt% of water-soluble polyvinyl alcohol, 2 to 20 of polyaluminum chloride based on the total weight of the eco-friendly paint viscosity removing composition. It may include wt%, 2 to 20 wt% of aluminum chlorohydrate, and 60 to 95 wt% of a solvent.

Another aspect of the present invention is based on the total weight of the composition for removing viscosity of eco-friendly paint, starch content 0.1 to 5 wt%, water-soluble polyvinyl alcohol 0.1 to 5 wt%, polyaluminum chloride 2 to 20 wt%, aluminum chlorohydrate 2 To 20 wt% and 60 to 95 wt% of the solvent, and may further include 0.1 to 5 wt% of an amino alcohol-based compound.

Another aspect of the present invention is based on the total weight of the composition for removing viscosity of eco-friendly paint, starch content 0.1 to 5 wt%, water-soluble polyvinyl alcohol 0.1 to 5 wt%, polyaluminum chloride 2 to 20 wt%, aluminum chlorohydrate 2 To 20 wt% and 60 to 95 wt% of the solvent, and 0.1 to 5 wt% of polydiallyldimethylammonium chloride.

Another aspect of the present invention is based on the total weight of the composition for removing viscosity of eco-friendly paints, based on the total weight of the composition for removing viscosity of eco-friendly paints, starch category 0.1 to 5 wt%, water-soluble polyvinyl alcohol 0.1 to 5 wt%, polychlorinated 2 to 20 wt% of aluminum, 2 to 20 wt% of aluminum chlorohydrate and 60 to 95 wt% of a solvent, and 0.1 to 5 wt% of an amino alcohol compound and 0.1 to 5 wt% of polydiallyldimethylammonium chloride It can be.

Hereinafter, the constituents constituting the composition for removing viscosity of an eco-friendly paint according to the present invention will be described in more detail.

In the composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention, the starch is starch, oxidized starch, negative starch, positive starch, amphoteric starch, acid-modified starch, starch derivative, gelatinized starch, ether starch, ester starch, It may include any one or a mixture of two or more selected from the group consisting of starch acetate, soluble starch, crosslinked starch, and graft starch, and a specific example may include starch, but is not particularly limited thereto.

The starch may be contained in an amount of 0.1 to 5 wt%, specifically 0.1 to 4 wt%, and more specifically 0.5 to 3 wt%, based on the total weight of the composition for removing viscosity of the eco-friendly paint. As included in the above range, the viscosity removal performance and aggregation efficiency of the composition for removing viscosity of an eco-friendly paint according to the present invention may be excellent, but is not limited thereto.

The starch may be dissolved in the solvent at a temperature of 5 to 95° C. and used, or may be gelatinized. More specifically, the starch may be gelatinized by dissolving in the solvent at a temperature of 30 to 95° C., thereby increasing the viscosity of the starch.

The temperature at which the starch gelatinization begins to occur may be 30 to 95 °C, and specifically, as the viscosity of the starch increases at a gelatinization temperature of 50 to 95 °C, the coagulation of the composition for removing viscosity of eco-friendly paints of the present invention Efficiency can be excellent.

The starch category is not particularly limited, but a number average molecular weight of 1,000 to 2,000,000 preferably in the range of 3,000 to 500,000, more preferably 5,000 to 100,000 is included in the composition for removing viscosity of eco-friendly paints of the present invention to remove viscosity It may be desirable because of its excellent performance and aggregation efficiency.

The type of starch is not greatly limited, and known ones may be used, but for example, corn starch, waxy corn starch, tapioca starch, potato starch, sweet potato starch, rice starch, wheat starch, and the like may be included.

In addition, the water-soluble polyvinyl alcohol of the present invention has different properties according to the degree of hydrolysis and degree of polymerization, and the solubility in water is highly dependent on the degree of saponification, and the mechanical properties depend on the degree of polymerization. do. The water-soluble polyvinyl alcohol of the present invention does not limit the degree of saponification and polymerization, but preferably, the degree of saponification may be 80 to 99 g/mol%, and the number average degree of polymerization (Pn) may be 500 to 4,000, but is not limited thereto. Does not. As a specific example, the composition for removing viscosity of an eco-friendly paint of the present invention may be prepared by dissolving the starch and the water-soluble polyvinyl alcohol in the water solvent, and thus, the viscosity removal performance and the aggregation efficiency may be further improved. .

The solvent may be included in an amount of 60 to 95 wt% based on the total weight of the composition for removing viscosity of the eco-friendly paint, specifically 65 to 90 wt%, more specifically 70 to 85 wt% .

The solvent is not particularly limited and may be used as long as it can dissolve the constituents of the composition for removing viscosity of eco-friendly paints of the present invention, but specific examples are water, calcium chloride (CaCl ₂ ) aqueous solution, magnesium chloride aqueous solution, methanol, ethanol, methoxy Ethanol, propanol, isopropanol, butanol, isobutanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, 3-methoxy-3-methyl butyl acetate, dimethylformamide, methylpyrrolidone, dimethylacet It may be any one or a mixture of two or more selected from the group consisting of amide, tetrahydrofuran, 2-methyltetrahydrofuran, dimethyl ether and dibutyl ether, and a preferred example may be water, but is not limited thereto.

As a more specific example, when the solvent is water, gelatinization of the starch may be aided, and the polyvinyl alcohol may be more efficiently dissolved. In addition, it is preferable that the constituents of the composition for removing viscosity of an eco-friendly paint of the present invention can be uniformly dissolved and an appropriate viscosity can be maintained.

As a more specific example, when the solvent is water, 60 to 95 wt% may be included with respect to the total weight of the composition for removing viscosity of the eco-friendly paint, specifically 65 to 90 wt%, more specifically 70 to 85 wt. As it is contained in %, it is preferable that the constituents constituting the composition for removing viscosity of the eco-friendly paint of the present invention can be uniformly dissolved and mixed.

The water-soluble polyvinyl alcohol may be dissolved in the solvent at a temperature of 5 to 95° C. and used, and 0.1 to 5 wt%, specifically 0.1 to 4 wt%, based on the total weight of the composition for removing viscosity of the eco-friendly paint. Specifically, as it is contained in an amount of 0.5 to 3 wt%, the viscosity removal performance and aggregation efficiency of the composition for removing viscosity of an eco-friendly paint according to the present invention may be excellent, but is not limited thereto.

The polyaluminum chloride is included in the composition for removing viscosity of eco-friendly paints of the present invention to increase the viscosity removal of the paint and the paint removal rate, and further enhance the effect of floating and removing the removed paint.

The polyaluminum chloride may be preferably contained in 2 to 20 wt% with respect to the total weight of the eco-friendly paint viscosity removal composition, specifically 3 to 18 wt%, more specifically 5 to 15 wt% of the paint The effect of condensing and agglomeration is more excellent, and the viscosity removal performance and agglomeration efficiency of the composition for removing viscosity of an eco-friendly paint according to the present invention may be improved, but the present invention is not limited thereto.

The aluminum chlorohydrate is included in the composition for removing viscosity of eco-friendly paints of the present invention, effectively removing and dispersing the paint to increase the removal efficiency, and it is good to further improve the aggregation of the removed paint.

The aluminum chlorohydrate may be contained in an amount of 2 to 20 wt% based on the total weight of the composition for removing viscosity of the eco-friendly paint, specifically 3 to 18 wt%, more specifically 5 to 15 wt%. It can be effectively agglomerated and dispersed, and the viscosity removal performance and agglomeration efficiency of the composition for removing viscosity of an eco-friendly paint according to the present invention can be improved, but is not limited thereto.

The composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention may use an amino alcohol-based compound, and the content is not limited as long as the effect of the present invention is further enhanced, but preferably 0.1 to 5 wt% may be further included. , It may be used by dissolving in the solvent. In an example of the present invention, when the amino alcohol-based compound is further included in the composition for removing viscosity of an eco-friendly paint of the present invention, it has an effect of dispersing the paint more effectively.

The amino alcohol-based compound may be one or a mixture of two or more selected from the group consisting of monoethanolamine, diethanolamine, and triethanolamine, and a preferred example may be triethanolamine, but is not limited thereto. .

As a specific example, the amino alcohol-based compound may be contained in an amount of 0.1 to 5 wt% more with respect to the composition for removing viscosity of an eco-friendly paint, specifically 0.1 to 3, more specifically 0.1 to 2 wt%. , It is preferable that the paint can be more effectively dispersed, and the viscosity removal performance and aggregation efficiency of the eco-friendly paint viscosity removal composition of the present invention can be further improved, but is not limited thereto.

The composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention may include polydiallyldimethylammonium chloride, and the content is not limited as long as the effect of the present invention is further enhanced, but preferably 0.1 to 5 wt. % May be further included, and may be used by dissolving in the solvent.

In an example of the present invention, when the polydiallyldimethylammonium chloride is further included in the composition for removing viscosity of an eco-friendly paint of the present invention, the paint can be more dissolved and effectively coagulated, and the recovery is further reduced by coarsening the paint particles. It has the effect of facilitating. The polydiallyldimethylammonium chloride is not particularly limited, but a weight average molecular weight (Mw) of 1,000 to 2,000,000, preferably 5,000 to 1,000,000, more preferably 10,000 to 350,000, for removing viscosity of the eco-friendly paint of the present invention It may be included in the composition to be preferable because it has excellent viscous removal performance and aggregation efficiency.

The polydiallyldimethylammonium chloride may be preferably 0.1 to 5 wt% more included, specifically 0.1 to 3, more specifically 0.1 to 2 wt%, based on the total weight of the composition for removing viscosity of the eco-friendly paint As it is included, it is possible to more effectively condense the paint, and it is included in the composition for removing viscosity of the eco-friendly paint of the present invention and is preferable because it has excellent viscosity removal performance and agglomeration efficiency, but is not limited thereto.

In the composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention, amino alcohol and polydiallyldimethylammonium chloride may be used at the same time with respect to the total weight of the composition for removing the eco-friendly paint viscosity, and the content is not particularly limited, but each It may be to contain 0.1 to 5 wt% more with respect to the composition.

In an example of the present invention, when the amino alcohol-based compound and the polydiallyldimethylammonium chloride are further included in the composition for removing viscosity of an eco-friendly paint at the same time, the paint can be more effectively condensed and dispersed, and more specifically, the above When both the amino alcohol-based compound and the polydiallyldimethylammonium chloride are included, the viscosity removal performance and aggregation efficiency of the present invention may be improved.

The composition for removing viscosity of a paint according to an embodiment of the present invention comprises 0.1 to 5 wt% of the amino alcohol-based compound, specifically 0.1 to 3, more specifically 0.1 to 2, based on the total weight of the paint viscosity removing composition. It may contain wt%, and at the same time, the polydiallyldimethylammonium chloride may be contained in an amount of 0.1 to 5 wt%, specifically 0.1 to 3, more specifically 0.1 to 2 wt%.

The composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention further includes the amino alcohol-based compound and the polydiallyldimethylammonium chloride in the above range, so that the viscosity removal performance and aggregation efficiency can be further improved. Can have

The composition for removing viscosity of an eco-friendly paint according to an embodiment of the present invention may further include an additive, and the additive may be added in the range of 　 that does not impair 　 　 of the composition 　 　, and the types of these are not particularly limited, but specific For example, it may further include any one or a mixture of two or more selected from the group consisting of a coagulant, a dispersant, a moisturizing agent, an anti-film formation agent, an antibacterial agent, an antifungal agent, an antifreeze agent, and an antifoaming agent.

The additive may be included in an amount of 0.001 to 5 wt% based on the total weight of the composition for removing viscosity of the eco-friendly paint, but this is only an example and is not limited thereto.

The coagulant is polyamine, (meth)acrylic acid ester (ester of alcohol having 1 to 4 carbon atoms), (meth)acrylaminoethyltrimethylammonium copolymer, (meth)acrylamide, (meth)acrylaminoethyltrimethylammonium copolymer Copolymer, (meth)acrylaminodialkyl (alkyl group having 1 to 4 carbon atoms), (meth)acrylaminoethyltrimethylammonium copolymer, (meth)acrylaminoethyltrimethylammonium copolymer such as poly(meth)acrylaminoethyltrimethylammonium ; Dicyandiamide-based condensates such as dicyandiamide-formaldehyde condensate and dicyandiamide-diethylenetriamine condensate; Dialkylamines such as dimethylamine-epichlorohydrin condensate, diethylamine-epichlorohydrin condensate, dimethylamine-epichlorhydrin-ammonia condensate, and diethylamine-epichlorohydrin-ammonia condensate -Epihalohydrin condensate; Diallyldimethylammonium chloride-acrylamide copolymer, diallyldimethylammonium chloride-sulfur dioxide copolymer, diallyldimethylammonium chloride-(meth)acrylamide copolymer, diallyldimethylammonium chloride-(meth)acrylic acid copolymer, diallyl Diallyl dimethyl ammonium chloride copolymers such as dimethyl ammonium chloride-(meth)acrylic acid-(meth)acrylamide copolymers; Any one or a mixture of two or more selected from the group consisting of polyethyleneimine, polyallylamine, and polyvinylamine may be used, but this is only an example and is not limited thereto.

The dispersant is cationic surfactant, anionic surfactant, nonionic surfactant, amphoteric surfactant, ethylene oxide adduct of higher alcohol, ethylene oxide adduct of alkylphenol, ethylene oxide adduct of fatty acid, polyhydric alcohol fatty acid ester. Ethylene oxide adduct, ethylene oxide adduct of higher alkylamine, ethylene oxide adduct of fatty acid amide, fatty acid ester of glycerin, fatty acid ester of pentaerythritol, fatty acid ester of sorbitol and sorbitan, fatty acid ester of sucrose, alkyl of polyhydric alcohol Any one or a mixture of two or more selected from the group consisting of ethers and alkylolamides may be used, but this is only an example and is not limited thereto.

The film formation inhibitors are propylene glycol, hyaluronic acid, ceramide, water-soluble collagen, pyrolidonecarboxylic acid, trimethylglycine (betaine), theanine, erythritol, pentaerythritol, glycerol, silicone oil, methylethylketoxime, butylaldehyde oxime , Lecithin, 2,5-di-t-butyl-hydroquinone, hydroquinone, and methyl esters of anthraquinone may be used, but this is only an example and is limited thereto. no.

The cryoprotectant may be any one or a mixture of two or more selected from the group consisting of ethanol, methanol, isopropanol, ethylene glycol, glycerin, polyethylene glycol, propylene glycol, and polypropylene glycol, but this is only an example and is not limited thereto. .

The antibacterial agent may be any one or a mixture of two or more selected from the group consisting of charcoal, bamboo salt, jade, volcanic pine, loess, silver nanomaterials, silver particles, and natural extracts, but this is only an example and is not limited thereto.

The moisturizing agent is not particularly limited as long as it is a substance having an effect of keeping it wet. Specifically, for example, glycol-based solvents such as ethylene glycol, propylene glycol, and 1,3-butylene glycol, glycerin, concentrated glycerin, diglycerin, Polyhydric alcohol solvents such as polyglycerin, oleyl alcohol, cetanol, stearyl alcohol, behenyl alcohol, myristyl alcohol, lauryl alcohol, higher alcohols such as lanolin alcohol, avocado oil, olive oil, tocopherol acetate, shea butter, Oils such as sunflower oil, lanolin, squalene, squalene, etc., aloe extract, orange extract, kakkon extract, rice bran extract, jujube extract, loofah extract and seaweed extract, etc. This is not particularly limited and may be used as long as it is a known moisturizing agent used in the field of the present invention in addition to an example.

The composition for removing viscosity of eco-friendly paints according to an embodiment of the present invention includes 0.5 to 3 wt% of starch, 0.5 to 3 wt% of water-soluble polyvinyl alcohol, 5 to 15 of polyaluminum chloride, based on the total weight of the eco-friendly paint viscosity removing composition. It may contain wt%, 5 to 15 wt% of aluminum chlorohydrate, and 70 to 85 wt% of a solvent.

More specifically, the composition for removing viscosity of eco-friendly paints according to an embodiment of the present invention includes 1 to 3 wt% of starch, 1 to 3 wt% of water-soluble polyvinyl alcohol, and polychlorination based on the total weight of the composition for removing viscosity of eco-friendly paints. 7 to 15 wt% of aluminum, 7 to 15 wt% of aluminum chlorohydrate, and 70 to 80 wt% of a solvent may be included.

A method of treating circulating water in a painting booth according to an embodiment of the present invention may be performed using the composition for removing viscosity of the eco-friendly paint, and adding the composition for removing viscosity of the eco-friendly paint to the circulating water; And removing the generated sludge from the circulating water, and the oversprayed paint may be treated through this process.

The coating booth circulating water treatment method using the eco-friendly paint viscosity removal composition according to an embodiment of the present invention is not particularly limited to the type of paint, and treatment efficiency can be quite excellent, for example, water-based paint, oil-based paint, and It can have a remarkably excellent effect in the viscosity removal efficiency of paints such as bumper paints.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, the following Examples and Comparative Examples are only one example for describing the present invention in more detail, and the present invention is not limited by the following Examples and Comparative Examples.

1. Formaldehyde detection evaluation

'KS M 0033 (General Rules for Analysis Method for High-Speed Liquid Chromatography)' was applied mutatis mutandis to determine the detection of formaldehyde, which is a hazardous substance in the decontamination agent.

2. Evaluation of adhesion rate

The adhesion rate evaluation was evaluated for each of the three test paints (paint, water-based paint, oil-based paint, and bumper paint). A transparent acrylic specimen (15 mm wide x 15 mm long x 2 mm thick) taped on one side in a 100 ml PET bottle containing 90 ml of deionized water and the paint viscosity of Examples 1 to 4 and Comparative Examples 1 to 5 Each 　1ml　 was added to the removal composition. Use sodium hydroxide 　 solution 　 to adjust 　pH　8.0 　, put 1 ml of test paint 　, shake it vigorously for 10 seconds, and then use a shaker (Recipro Shaker, Jeiotech RS-1) operated up and down at a speed of 350 rpm/min. The bottle was shaken for 60 seconds. After that, 1 ml of a cohesive flotation agent (99 wt% of water, 1 wt% of polyacrylamide is mixed) was added, and the bottle was shaken for 30 seconds at a speed of 350 rpm/min using a shaker.

The acrylic specimen on which one side was taped was taken out, washed for 20 seconds in running water, dried, and then taped on one side was removed, an image was taken using a microscope, and the adhesion rate of the paint was evaluated using an image analysis system. The adhesion rate (%) was tested a total of 5 times and expressed as an average of three values excluding the maximum and minimum values, and the lower the value, the better the viscosity removal performance.

3. Evaluation of cohesive injury

After the adhesion rate test, the aggregated sludge remaining in the test bottle was observed and compared with the naked eye for the shape of the agglomerate and the floating state with water, and it was judged as 　◎: excellent, 　○: good, 　△: normal, 　Ⅹ: bad.

4. Turbidity evaluation

After the evaluation of the cohesive injury, Nephelometry was used, and the average value was indicated by measuring three times with a turbidimeter (2020 　 TURBIDIMETER CODE 1799, 　 LaMotte). The lower the number, the better the turbidity. (Unit: Nephelometry Turbidity Unit, NTU)

5. Viscous removal evaluation

Viscosity removal was the result of 　 visual observation of the 　paint adhesion state on the surface of the test bottle and the acrylic specimen, 　◎: excellent, 　○: good, 　△: normal, 　Ⅹ: bad.

[Example 1]

With respect to the total weight of the composition for removing viscosity of an eco-friendly paint, 1.5 wt% of starch, 1.0 wt% of polyvinyl alcohol (number average molecular weight 3100), 10 wt% of polyaluminum chloride, 10 wt% of aluminum chlorohydrate, and 77.5 wt% of water were prepared. . First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Example 2]

Based on the total weight of the composition for removing viscosity of eco-friendly paint, starch 1.5 wt%, polyvinyl alcohol (number average molecular weight 3100) 1.0 wt%, polydiallyldimethylammonium chloride (CAS No.26062-79-3, weight average molecular weight <100,000) ) 0.5 wt%, polyaluminum chloride 10 wt%, aluminum chlorohydrate 10 wt%, and water 77 wt% were prepared.

First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Example 3]

Based on the total weight of the composition for removing viscosity of eco-friendly paint, starch 1.5 wt%, polyvinyl alcohol (number average molecular weight 3100) 1.0 wt%, trimethanolamine 1.0 wt%, polyaluminum chloride 10 wt%, aluminum chlorohydrate 10 wt%, 76.5 wt% of water was prepared. First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Example 4]

Based on the total weight of the composition for removing viscosity of eco-friendly paint, starch 1.5 wt%, polyvinyl alcohol (number average molecular weight 3100) 1.0 wt%, polydiallyldimethylammonium chloride (CAS No.26062-79-3, weight average molecular weight <100,000) ) 0.5 wt%, trimethanolamine 1.0 wt%, polyaluminum chloride 10 wt%, aluminum chlorohydrate 10 wt%, and water 76 wt% were prepared. First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Example 5]

Based on the total weight of the composition for removing viscosity of eco-friendly paint, starch 1.0 wt%, polyvinyl alcohol (number average molecular weight 3100) 1.0 wt%, polydiallyldimethylammonium chloride (CAS No.26062-79-3, weight average molecular weight <100,000) ) 1.0 wt%, polyaluminum chloride 10 wt%, aluminum chlorohydrate 10 wt%, and water 77 wt% were prepared.

First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Example 6]

Based on the total weight of the composition for removing viscosity of eco-friendly paint, starch 1.0 wt%, polyvinyl alcohol (number average molecular weight 3100) 1.0 wt%, trimethanolamine 1.5 wt%, polyaluminum chloride 10 wt%, aluminum chlorohydrate 10 wt%, 76.5 wt% of water was prepared. First, the starch and polyvinyl alcohol were added to water at 60° C. and mixed, and then the remaining materials were added and stirred at a speed of 300 rpm to prepare a composition for removing viscosity of an eco-friendly paint.

As a result of the formaldehyde detection test, formaldehyde was not detected, and the adhesion rate, cohesive flotation property, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4 below. .

[Comparative Example 1]

An aluminum-based paint viscosity remover (DK-4000, Sampoong Tritech) was prepared. As a result of the formaldehyde detection test, formaldehyde was not detected, and the results of adhesion rate, cohesive flotation, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3 and 4, respectively. Done.

[Comparative Example 2]

A clay-based paint viscosity remover (DK-5000, Sampoong Tritech) was prepared. As a result of the formaldehyde detection test, formaldehyde was not detected, and the results of adhesion rate, cohesive flotation, turbidity, and viscosity removal evaluation results for aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3 and 4, respectively. Done.

[Comparative Example 3]

A melamine formaldehyde resin-based paint viscous remover (DK-4000, Sampoong Tritech) was prepared, and it was confirmed that 0.2% of formaldehyde was detected as a result of a formaldehyde detection test. The evaluation results of adhesion rate, cohesive flotation, turbidity, and viscosity removal to aqueous paint, oil paint, and bumper paint are shown in Tables 2, 3, and 4, respectively.

In Table 1 below, the compositions and trade names of Examples 1 to 6 and Comparative Examples 1 to 3 are shown.

[Table 1]

Terms in Table 1 are as follows.

1.PVA: polyvinyl alcohol

2.PolyDADMAC: polydiallyldimethylammonium chloride

3. TEA: triethanol amine

4. PAC: polyaluminum chloride

5. ACH: aluminum chlorohydrate

[Table 2] Water-based paint experiment results

[Table 3] Oil paint experiment results

[Table 4] Oil-based paint experiment results

As shown in Tables 3 to 5, in the case of Examples 1 to 6 compared to Comparative Examples 1 to 3, adhesion rate to water-based paints, oil paints, and bumper paints, cohesive flotation, turbidity, viscosity removal evaluation results, viscosity removal performance It was confirmed that this is quite excellent.

Particularly, in the case of Example 4, it was confirmed that polydiallyldimethylammonium chloride and triethanol amine were all included, and the effect of removing the viscosity of the paint was most excellent.

Claims (8)

A composition for removing viscosity of eco-friendly paints containing starch, water-soluble polyvinyl alcohol, polyaluminum chloride, aluminum chlorohydrate and a solvent. The method of claim 1,
The composition for removing viscosity of eco-friendly paints further comprises one or more components selected from amino alcohol-based compounds and polydiallyldimethylammonium chloride. The method of claim 1,
The eco-friendly paint viscosity removal composition is based on the total weight of the composition, starch 0.1 to 5 wt%, water-soluble polyvinyl alcohol 0.1 to 5 wt%, polyaluminum chloride 2 to 20 wt%, aluminum chlorohydrate 2 to 20 wt% and A composition for removing viscosity of eco-friendly paints containing 60 to 95 wt% of a solvent. The method of claim 3,
The eco-friendly paint viscosity removal composition further comprises 0.1 to 5 wt% of an amino alcohol-based compound. The method of claim 3,
The eco-friendly coating composition for removing viscosity is an eco-friendly coating composition for removing viscosity further comprising 0.1 to 5 wt% of polydiallyldimethylammonium chloride. The method of claim 3,
The composition for removing viscosity of eco-friendly paints is an amino alcohol-based compound 0.1 to 5 wt% and 0.1 to 5 wt% of polydiallyldimethylammonium chloride. The method of claim 3,
Based on the total weight of the composition for removing viscosity of the eco-friendly paint,
For removing viscosity of eco-friendly paints containing 0.5 to 3 wt% of starch, 0.5 to 3 wt% of water-soluble polyvinyl alcohol, 5 to 15 wt% of polyaluminum chloride, 5 to 15 wt% of aluminum chlorohydrate, and 70 to 85 wt% of solvent Composition. The step of adding the eco-friendly paint viscosity removal composition of any one selected from claim 1 to circulating water; And removing the generated sludge from the circulating water.