WO2023239052A1 - 베이스 도료 조성물 - Google Patents
베이스 도료 조성물 Download PDFInfo
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- WO2023239052A1 WO2023239052A1 PCT/KR2023/005681 KR2023005681W WO2023239052A1 WO 2023239052 A1 WO2023239052 A1 WO 2023239052A1 KR 2023005681 W KR2023005681 W KR 2023005681W WO 2023239052 A1 WO2023239052 A1 WO 2023239052A1
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- resin
- weight
- coating film
- paint
- acrylic polyol
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/16—Esters of inorganic acids
- C09D101/18—Cellulose nitrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Definitions
- the present invention has excellent metal texture, can spray paint large-area and complex-shaped automobile parts such as roof rack bars and skid plates, and can achieve a metal-textured appearance, and has excellent adhesion, water resistance, weather resistance, and It relates to a base paint composition with excellent physical properties such as car washability.
- Patent Document 1 Korean Patent No. 10-1843288
- Patent Document 1 includes aluminum paste, polyether, cellulose acetate butyrate (CAB) with a molecular weight of 25,000 to 35,000 g/mol, polyester resin, Base coat primary colors containing polyamide wax, polyolefin wax and solvent; And a transparent coating composition for adjusting the base coat is disclosed.
- the paint composition of Patent Document 1 had a problem in that the brightness decreased over time, making it difficult to implement a metallic texture, and causing stains.
- the present invention has a better metal texture than existing metallic paints and provides a variety of luxurious colors. It is possible to spray paint parts with large areas and complex shapes among automobile parts, so it has excellent workability and mass production, and has excellent appearance, especially The aim is to provide a base paint composition that has excellent metallic texture.
- the present invention provides a base paint composition containing an acrylic polyol resin, a polyester resin, a nitrocellulose resin, and a pigment.
- the base paint composition according to the present invention can be spray painted on large areas and complex shapes, and has excellent workability and mass production, making it very suitable for painting automobile parts. Furthermore, the base paint composition can implement a variety of luxurious colors and can form a film with higher brightness than conventional metallic paints.
- the coating film manufactured from the base paint composition is excellent in various physical properties such as water resistance, weather resistance, high pressure car washing, chipping resistance, acid resistance, alkali resistance, and accelerated weather resistance.
- the coating film manufactured from the base coating composition has excellent appearance characteristics with less occurrence of appearance defects such as metallic stains or foreign substances.
- number average molecular weight (Mn)” and “weight average molecular weight (Mw)” can be measured by methods well known in the art, for example, values measured by GPC (gel permeation chromatograph). You can.
- Glass transition temperature is measured by a common method known in the art, and can be measured, for example, by differential scanning calorimetry (DSC).
- the base paint composition according to the present invention includes acrylic polyol resin, polyester resin, nitrocellulose resin, and pigment.
- Acrylic polyol resin is the main resin of paints containing it, and plays a role in forming a coating film and determining the characteristics of the coating film.
- the acrylic polyol resin can be directly synthesized according to a known method, or a commercially available product can be used. At this time, the acrylic polyol resin may be, for example, manufactured by polymerizing a hydroxyl group-containing acrylic monomer and a vinyl monomer, or may be manufactured by polymerizing a hydroxyl group-containing acrylic monomer.
- the hydroxyl group-containing acrylic monomer may be, for example, hydroxyalkyl-containing (meth)acrylate, specifically, 2-hydroxy methyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2- Hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, 1,3-butanediol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, ethylene glycol di(meth) It may include at least one member selected from the group consisting of acrylate and 1,6-hexanediol di(meth)acrylate.
- the vinyl monomer may be, for example, (meth)acrylate substituted or unsubstituted with a hydroxyl group, and specifically, (meth)acrylic acid, methyl (meth)acrylic acid, methyl (meth)acrylate, and ethyl (meth)acrylate.
- Latex isobutyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, n-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl ( Meth)acrylate, n-octyl (meth)acrylate, isobornyl (meth)acrylate, styrene, methylstyrene, dimethylstyrene, fluorostyrene, ethoxystyrene, and methoxystyrene. It can be included.
- the acrylic polyol resin may be a cellulose acetate butyrate (CAB) modified acrylic resin.
- CAB cellulose acetate butyrate
- the drying property of the paint containing it is improved by modifying it with the polymer cellulose acetate butylate, which has the effect of improving the brightness of the metallic base paint.
- Cellulose acetate butylate resin is in the form of powder, and if it is included alone, the appearance characteristics of the manufactured coating film, such as irregularities, may deteriorate as the cellulose acetate butylate resin is not sufficiently dissolved in the solvent, so it is included after being modified in acrylic resin. It is more desirable to do so.
- a film formed by applying a paint dries as the solvent volatilizes, and in this process, the film shrinks.
- a polymer resin modified with cellulose acetate butyrate, such as the acrylic polyol resin it has a high viscosity and therefore contains a lot of solvents for workability, and a paint film manufactured from a paint containing the resin is dried. In the process, the coating film shrinks, which has the effect of improving brightness.
- the cellulose acetate butylate content of the acrylic polyol resin may be 3 to 15% by weight, or 5 to 10% by weight, based on the total weight of the resin.
- the spray workability and drying properties of the coating composition are improved.
- the cellulose acetate butylate content is less than the above range, the drying and brightness improvement effect of the coating composition is insufficient as the molecular weight (Mw) of the acrylic polyol resin decreases, and if it exceeds the above range, cellulose acetate butylate causes As the viscosity increases, the solids volume ratio (SVR) of the paint may decrease and the appearance of the manufactured coating film may deteriorate.
- the acrylic polyol resin may have a hydroxyl value (OHv) of 30 to 80 mgKOH/g, 30 to 60 mgKOH/g, or 40 to 60 mgKOH/g.
- OHv hydroxyl value
- the hydroxyl value of the acrylic polyol resin is within the above range, there is an effect of improving the weather resistance of the manufactured coating film and improving the storability of the paint and the appearance characteristics of the coating film.
- the hydroxyl value of the acrylic polyol resin is less than the above range, the number of sites that react with the isocyanate curing agent is reduced, which reduces the crosslinking density, which may cause problems in which the appearance characteristics, heat resistance, and chemical resistance of the manufactured coating film are deteriorated.
- the number of sites that react with the isocyanate curing agent may be excessive, resulting in excessive curing, which may cause problems such as brittleness of the coating film, lowered elasticity, and reduced storage stability, appearance characteristics, and weather resistance of the paint.
- the acrylic polyol resin may have an acid value (Av) of 1 to 10 mgKOH/g, or 5 to 10 mgKOH/g.
- Av acid value of 1 to 10 mgKOH/g
- the dispersion stability and storage stability of the coating composition are improved, and the durability of the coating film is improved.
- the acid value of the acrylic polyol resin is less than the above range, the urethane reaction is accelerated and the curing reaction is accelerated, resulting in a shortened pot life and poor appearance characteristics of the coating film.
- the acid value of the acrylic polyol resin is greater than the above range, the urethane reaction is excessively delayed. As the pot life becomes longer, problems such as slow drying and reduced workability may occur.
- the acrylic polyol resin may have a glass transition temperature (Tg) of 1 to 20°C, or 1 to 5°C.
- Tg glass transition temperature
- the coating film formation and antifoaming properties of the composition, and the gloss characteristics of the coating film are improved.
- the glass transition temperature of the acrylic polyol resin is less than the above range, the coating film becomes more flexible and the drying speed of the coating composition is delayed, which may cause problems in that the appearance, paint flowability, and chemical resistance of the coating film are deteriorated, and if it exceeds the above range, the drying speed of the coating composition may be delayed. In this case, a problem may occur where the coating film becomes brittle and the exterior characteristics deteriorate.
- the acrylic polyol resin may have a weight average molecular weight (Mw) of 100,000 to 200,000 g/mol, or 100,000 to 150,000 g/mol.
- Mw weight average molecular weight
- the weight average molecular weight of the acrylic polyol resin is within the above range, the hardness of the manufactured coating film can be improved.
- the weight average molecular weight of the acrylic polyol resin is less than the above range, the molecular weight of the resin may be small, which may cause problems in which the acid resistance and chemical resistance of the produced coating film are reduced, and if it exceeds the above range, the molecular weight of the resin increases, causing the paint to dry out.
- the flowability and leveling properties of the composition may be reduced, which may cause problems such as deterioration in the appearance and mechanical properties of the coating film.
- the acrylic polyol resin may be included in an amount of 5 to 15% by weight, or 5 to 12% by weight, based on the total weight of the base paint composition.
- the acrylic polyol resin may be included within the above content range, there is an effect of improving the adhesion and impact resistance of the coating film.
- the content of the acrylic polyol resin is less than the above range, the coating film riseability may be reduced and the adhesion and durability of the coating film may be reduced due to a lack of interfacial attachment sites, and if the content is more than the above range, an excessive amount of acrylic polyol resin with high viscosity is included. As a result, the viscosity of the coating composition may increase and storage stability may decrease.
- Polyester resin is an auxiliary resin in a paint composition containing it, and plays a role in preventing metallic stains and appearance defects by improving the spreadability and drying properties of the coating film.
- the polyester resin can be directly synthesized according to a known method, or a commercially available product can be used.
- the polyester resin may be a polymer produced through a condensation reaction of a polyol monomer and a carboxyl group-containing monomer.
- the polyester resin can be produced by a condensation reaction of a polyol monomer and a carboxyl group-containing aliphatic monomer.
- the polyol monomer is, for example, ethylene glycol, propylene glycol, trimethylolpropane, trimethylolethane, cyclohexanedimethanol, neopentyl glycol, 2-butyl-2-ethyl-1,3-propanediol, 1,4- Hexanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, 1,2-ethanediol, 1,4-butanediol, 1,3-butanediol, 1,5-pentane Diol, triethylolpropane, glycerin, pentaerythritol, 3-methylpentanediol, and mixtures thereof.
- carboxyl group-containing monomers include, for example, adipic acid, trimellitic anhydride, terephthalic acid, fumaric acid, phthalic anhydride, hexahydrophthalic anhydride, methylhexahydrophthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, and Examples include acid anhydride, isophthalic acid, azelaic acid, maleic anhydride, and mixtures thereof.
- the polyester resin may have a number average molecular weight (Mn) of 800 to 5,000 g/mol, or 1,000 to 3,000 g/mol.
- Mn number average molecular weight
- a coating film is formed stably, which has the effect of improving the smoothness of the paint.
- the number average molecular weight of the polyester resin is less than the above range, unreacted urethane groups may exist due to a lack of heat (temperature) required for the urethane reaction, and the mechanical properties of the coating film may deteriorate, and if it exceeds the above range, the paint Spreadability and drying properties may be reduced.
- the polyester resin may have a glass transition temperature (Tg) of 0°C or less, or -30°C to 0°C.
- Tg glass transition temperature
- the glass transition temperature of the polyester resin is within the above range, a paint film with excellent spreadability and high brightness can be manufactured, and the drying property of the paint can be improved to reduce the feeling of foreign matter in the paint film.
- the glass transition temperature of the polyester resin is below the above range, problems may occur due to insufficient drying properties of the paint, which may lead to problems with insufficient physical properties such as scratches and pencil hardness of the paint film, and if it exceeds the above range, The effect of improving the drying and spreadability of the manufactured coating film may be insufficient.
- the polyester resin may have an acid value (Av) of 1 to 30 mgKOH/g, or 1 to 10 mgKOH/g.
- Av acid value of 1 to 30 mgKOH/g, or 1 to 10 mgKOH/g.
- the acid value of the polyester resin is within the above range, there is an effect of improving the hardness and appearance characteristics of the manufactured coating film.
- the acid value of the polyester resin is outside the above range, the molecular weight of the polyester resin may be insufficient and the degree of curing of the paint may decrease, which may result in poor formation of the paint film, and the appearance characteristics of the paint film may deteriorate due to insufficient paint storability. may occur.
- the polyester resin may have a hydroxyl value (OHv) of 100 to 200 mgKOH/g, or 120 to 150 mgKOH/g.
- OHv hydroxyl value
- the durability and chipping resistance of the manufactured coating film are improved, and the storage and appearance characteristics of the paint are improved.
- the hydroxyl value of the polyester resin is less than the above range, there is a problem that the durability and chemical resistance of the produced coating film is reduced due to insufficient crosslink density, and if it is exceeding the above range, the water resistance of the coating film is reduced due to insufficient drying of the coating composition. , problems such as insufficient pencil hardness and accelerated weather resistance may occur.
- the polyester resin may be included in an amount of 1 to 20% by weight, or 1 to 10% by weight, based on the total weight of the base paint composition.
- the content of the polyester resin is within the above range, metallic stains, spreadability, foreign matter, etc. are reduced, so the appearance characteristics are excellent and the workability of the paint composition is excellent. If the content of the polyester resin is less than the above range, foreign matter and metallic stains may occur in the manufactured coating film. Additionally, if the content of the polyester resin exceeds the above range, the brightness of the manufactured coating film may be insufficient.
- the base paint composition may include polyester resin, acrylic polyol resin, and nitrocellulose resin in a weight ratio of 1:1:5 to 1:4:20. If the weight ratio of the polyester resin, acrylic polyol resin, and nitrocellulose resin is outside the above range, the brightness of the paint film may decrease and the workability of the paint composition may be poor. For example, if the amount of the polyester resin is increased and the content of the acrylic polyol resin and nitrocellulose resin is insufficient, the brightness of the manufactured coating film may decrease. If the content of the polyester and nitrocellulose resin is insufficient and the content of the acrylic polyol resin is increased, the drying speed of the paint may increase, causing stains and foreign body sensation in the paint film, which may deteriorate the appearance characteristics. If the content of the polyester resin and acrylic polyol resin is insufficient and the content of nitrocellulose resin increases, metallic stains may occur in the coating film and physical properties such as accelerated weather resistance and water resistance may be deteriorated.
- Nitrocellulose resin improves the orientation of aluminum, a pigment, to achieve high brightness of the paint film and reduce metallic stain defects.
- the nitrocellulose resin can be directly synthesized according to a known method, or a commercially available product can be used.
- the nitrocellulose resin can be used by mixing nitrocellulose in powder form with a solvent such as methyl isobutyl ketone (MIBK), ethanol, or toluene.
- MIBK methyl isobutyl ketone
- the nitrocellulose resin may have a nitrocellulose weight of 2 to 10% by weight, or 4 to 7% by weight.
- the paint film can exhibit high brightness.
- the range of nitrocellulose in the nitrocellulose resin is less than the above range, the orientation of aluminum may decrease and the brightness of the coating film may decrease, and if it exceeds the above range, the content of nitrocellulose resin with a high molecular weight is excessively contained. As a result, the viscosity of the paint increases, which may cause problems such as difficulty dissolving in the solvent.
- the nitrocellulose resin may have a weight average molecular weight (Mw) of 100,000 to 500,000 g/mol, or 200,000 to 400,000 g/mol.
- Mw weight average molecular weight
- the brightness of the coating film is increased, the appearance characteristics are excellent, and the paint workability of the paint is excellent.
- the weight average molecular weight of the nitrocellulose resin is less than the above range, the brightness of the coating film may decrease, and if it exceeds the above range, the brightness of the coating film will be insufficient and the paint workability of the paint will be insufficient, resulting in stains and foreign substances in the coating film, etc. Defects and metallic stains may occur.
- the nitrocellulose resin may have a number average molecular weight (Mn) of 10,000 to 50,000 g/mol, or 20,000 to 40,000 g/mol.
- Mn number average molecular weight
- the number average molecular weight of the nitrocellulose resin is within the above range, a coating film with high brightness can be implemented, the exterior characteristics of the coating film can be improved, and the paint workability of the paint is excellent.
- the number average molecular weight of the nitrocellulose resin is less than the above range, the brightness value of the coating film may be insufficient, and if it exceeds the above range, the brightness value of the coating film may be insufficient and the paint workability of the paint will be poor, causing stains/foreign matter and metallic stains, etc. Appearance defects may occur.
- the nitrocellulose resin may be included in an amount of 30 to 60% by weight, or 40 to 60% by weight, based on the total weight of the base paint composition.
- the content of the nitrocellulose resin is within the above range, there is an effect of improving the appearance, heat resistance, and texture of the manufactured coating film.
- the content of nitrocellulose resin is less than the above range, a problem may occur in which the brightness of the manufactured paint film is low, and if it is greater than the above range, a problem may occur in which the spreadability of the paint is lowered due to an excessive amount of nitrocellulose resin. there is.
- Pigments play a role in imparting a metallic texture and various colors to the manufactured coating film.
- the pigment may include, for example, an aluminum-based pigment.
- the aluminum-based pigment may be cylindrical or polygonal. At this time, the aluminum-based pigment may have a height of 10 to 150 ⁇ m or 20 to 100 ⁇ m. If the height of the aluminum-based pigment is less than the above range, discoloration may occur due to insufficient weather resistance of the manufactured coating film, and if it exceeds the above range, the coating film may lack brightness and lack of metallic feel.
- the aluminum-based pigment may have an average bottom diameter of 1 to 15 ⁇ m or 6 to 10 ⁇ m.
- the average diameter of the bottom may be the average diameter of the circumscribed circle of the polygon on the bottom. If the average diameter of the aluminum-based pigment is less than the above range, the hiding power is reduced and the material is exposed to the outside, and if it is greater than the above range, it is difficult to realize a metallic texture.
- the content of the pigment can be appropriately adjusted based on the target color and target hiding power of the coating film, and for example, it may be included in an amount of 1 to 15% by weight, or 5 to 13% by weight, based on the total weight of the base paint composition.
- the base paint composition may further include a solvent.
- the solvent serves to control the thickness of the coating film and improve the coating workability of the composition.
- the solvent may include one or more selected from the group consisting of non-polar solvents and polar solvents.
- the solvent is, for example, dimethyl glutarate, dimethyl succinate, dimethyl adipate, n-heptane, n-hexane, n-butanol, toluene, ethyl acetate, n -Butyl acetate, isobutyl acetate, 3-methoxy butyl acetate, amyl acetate, ethylene glycol ethyl ether acetate, butyl glycol acetate, propylene glycol methyl ether acetate, methyl ethyl ketone, methyl isobutyl ketone, acetone, diisobutyl ketone, It may include one or more selected from the group consisting of isophorone and cyclohexanone. Specifically, the solvent may include one or more selected from the group consisting of n-butyl a
- the solvent may be included in an amount of 5 to 35% by weight, or 7 to 30% by weight, based on the total weight of the base paint composition.
- the content of the solvent is within the above range, the viscosity of the coating composition is appropriate, resulting in excellent workability.
- the solvent content is less than the above range, the viscosity of the coating composition is insufficient, causing a problem of insufficient workability, and if it exceeds the above range, the adhesion of the coating composition is reduced or the viscosity is excessive, causing a problem of insufficient workability. It can happen.
- the base coat composition may further include additives.
- the additives are not particularly limited as long as they can be commonly applied to paints, but examples include curing accelerators, adhesion enhancers, leveling agents, anti-settling agents, hardeners, waxes, etc.
- the additive may be included in an amount of 1 to 20% by weight, or 3 to 13% by weight, based on the total weight of the base paint composition.
- the curing accelerator serves to increase the crosslinking density of the coating composition.
- the curing accelerator those commonly used in coating compositions can be used to increase the degree of crosslinking, for example, dibutyltin dilaurate, dibutyltin diacetate, stanius octate, dibutyltin mercaptide, etc. metal compounds; Tertiary amines such as triethyldiamine, triethanolamine, 1,4-diazocyclooctane, dimethylethanolamine, ethylmorphyline, dimethylaminoethylmorpholine, and dimethylcyclohexylamine; and carboxylates of alkali metals or zinc-based complexes.
- the amount of the curing accelerator used There is no particular limitation on the amount of the curing accelerator used, and the amount can be adjusted as long as it does not affect the physical properties of the composition.
- the adhesion enhancer serves to improve the adhesion between the primer coating film at the bottom of the base coating film and the clear coating film at the top of the base coating film.
- the adhesion enhancer may be an additive commonly used in paint compositions to control interlayer adhesion, and may be, for example, a phosphoric acid-modified resin.
- the adhesion promoter may include at least one selected from the group consisting of phosphoric acid-modified polyester resin and phosphoric acid-modified epoxy resin.
- the leveling agent serves to suppress the occurrence of orange peel by imparting smoothness to the paint composition and improving the appearance characteristics of the paint film produced therefrom.
- the leveling agent can be used without particular limitation as long as it is a common leveling agent that can be used in a paint composition, and examples include ether-modified polysiloxane.
- the anti-settling agent prevents sedimentation of the pigment, improves the storability of the paint, and improves the appearance characteristics of the manufactured paint film.
- the anti-settling agent is not particularly limited as long as it can be used to prevent pigment settling in the paint composition, and examples include amide wax.
- the base paint composition may have a viscosity at 25°C of 25 to 90 seconds, or 28 to 80 seconds based on Ford Cup No. 4.
- the base paint composition may include 5 to 25% by weight, or 8 to 20% by weight of solid content based on the total weight of the composition.
- the base paint composition according to the present invention can be spray painted on large areas and complex shapes, and has excellent workability and mass production, making it very suitable for painting automobile parts. Furthermore, the base paint composition can implement a variety of luxurious colors and can form a film with higher brightness than conventional metallic paints.
- the coating film manufactured from the base paint composition is excellent in various physical properties such as water resistance, weather resistance, high pressure car washing, chipping resistance, acid resistance, alkali resistance, and accelerated weather resistance.
- the coating film manufactured from the base coating composition has very excellent appearance characteristics with few defects such as metallic stains or stains.
- a base paint composition was prepared by mixing the ingredients in the compositions shown in Tables 1 to 4.
- DBE is a dibasic ester
- PMA is propylene glycol methyl ether acetate
- BA is n-butyl acetate.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Aluminum pigment-1 8 8 8 8 8 8 8 8
- Nitrocellulose Resin-1 50 50 50 40
- Acrylic polyol resin-1 10 10 5 12
- Polyester Resin-1 5 3 10 5 5 5 5 5
- cure accelerator One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One One
- Aluminum pigment-1 - Polygonal column type (height: 80 ⁇ m, average diameter of the circumscribed circle of the polygon at the base: 8 ⁇ m)
- Aluminum pigment-2 - Cylindrical (height: 80 ⁇ m, average diameter of base: 7 ⁇ m)
- Aluminum pigment-3 - Polygonal column type (height: 40 ⁇ m, average diameter of the circumscribed circle of the polygon at the base: 7 ⁇ m)
- Primer paint (manufacturer: KCC, product name: RP2143(H)-D/GREY) was applied to the substrate and then naturally dried for 10 minutes to prepare a primer film with a thickness of 12 ⁇ m. Afterwards, the base paint compositions of Examples and Comparative Examples were applied and dried naturally for 10 minutes to prepare a base coating film with a thickness of 5 ⁇ m. Afterwards, clear paint (manufacturer: KCC, product name: UT5800-A-CLEAR) was applied and dried at 80°C for 30 minutes to prepare a clear coating film with a thickness of 30 ⁇ m. Afterwards, the physical properties of the final coating film were measured in the following manner and the results are shown in Table 6.
- the brightness of the base coat was measured using X-RITE MA-98 to measure the FLOP INDEX.
- the adhesion test was performed on the final coating film according to the ASTM D3359 tape adhesion test method.
- adhesion was measured by making 100 squares of 1 mm At this time, the measured adhesion is excellent ( ⁇ ) when 100 squares are 100% completely attached, good ( ⁇ ) when the remaining squares are between 70% and less than 100%, average ( ⁇ ) when the remaining squares are between 50% and 70%, and 50%. If it is less than that, it was evaluated as defective ( ⁇ ).
- the final coating film was immersed in a constant temperature bath at 40°C for 10 days, and adhesion was judged by the checkerboard method in the same manner as item (2). At this time, the same evaluation criteria were applied.
- Weather resistance was measured according to ISO 105 using the CI-5000 instrument. At this time, the total amount of irradiation energy was 2500KJ, the irradiance intensity was 0.75W, QUARTZ was used as the inner filter, and BOROSILICATE of TYPE S was used as the outer filter.
- the base coating was prepared as described above on a specimen measuring 30cmX30cm (width
- Example 1 26.5 ⁇ ⁇ ⁇ ⁇ ⁇ Example 2 26.5 ⁇ ⁇ ⁇ ⁇ Example 3 26.5 ⁇ ⁇ ⁇ ⁇ Example 4 25 ⁇ ⁇ ⁇ ⁇ ⁇ Example 5 26.5 ⁇ ⁇ ⁇ ⁇ Example 6 26.5 ⁇ ⁇ ⁇ ⁇ Example 7 26.5 ⁇ ⁇ ⁇ ⁇ Example 8 22 ⁇ ⁇ ⁇ ⁇ Example 9 25 ⁇ ⁇ ⁇ ⁇ ⁇ Example 10 26.5 ⁇ ⁇ ⁇ ⁇ ⁇ Example 11 26.5 ⁇ ⁇ ⁇ ⁇ Example 12 26.5 ⁇ ⁇ ⁇ ⁇ Example 13 22 ⁇ ⁇ ⁇ ⁇ Example 14 27 ⁇ ⁇ ⁇ ⁇ ⁇ Example 15 25 ⁇ ⁇ ⁇ ⁇ ⁇ Example 16 22 ⁇ ⁇ ⁇ ⁇ ⁇ Example 17 22 ⁇ ⁇ ⁇ ⁇ ⁇ Example 18 25 ⁇
- the coating films of Examples 1 to 18 according to the present invention showed excellent physical properties in all measurement items.
- Comparative Example 1 in which polyester resin was not applied, had poor overall adhesion, high-pressure washing properties, and workability.
- Comparative Example 2 in which acrylic resin was not applied, had poor brightness, water resistance, accelerated weathering resistance, and workability.
- Comparative Example 3 in which nitrocellulose resin was not applied, had overall poor brightness, adhesion, water resistance, accelerated weathering resistance, high-pressure car washability, and workability.
- Comparative Example 4 using acrylic polyol resin-4, an unmodified acrylic resin had poor brightness and workability.
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Abstract
Description
| 성분 (중량%) | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 |
| 알루미늄계 안료-1 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 니트로셀룰로오스 수지-1 | 50 | 50 | 50 | 50 | 50 | 40 | 60 |
| 아크릴폴리올 수지-1 | 10 | 10 | 10 | 5 | 12 | 10 | 10 |
| 폴리에스터 수지-1 | 5 | 3 | 10 | 5 | 5 | 5 | 5 |
| 경화 촉진제 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 용제-1(DBE) | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 용제-2(PMA) | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 용제-3(BA) | 11 | 13 | 6 | 16 | 9 | 21 | 1 |
| 아마이드 왁스 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 이소시아네이트 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 총량 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| 성분 (중량%) | 실시예 8 | 실시예 9 | 실시예 10 | 실시예 11 | 실시예 12 | 실시예 13 | 실시예 14 |
| 알루미늄계 안료-1 | 5 | 13 | - | - | - | 8 | 8 |
| 알루미늄계 안료-2 | - | - | 8 | - | - | - | - |
| 알루미늄계 안료-3 | - | - | - | 8 | - | - | - |
| 알루미늄계 안료-4 | - | - | - | - | 8 | - | - |
| 니트로셀룰로오스 수지-1 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| 아크릴폴리올 수지-1 | 10 | 10 | 10 | 10 | 10 | - | - |
| 아크릴폴리올 수지-2 | - | - | - | - | - | 10 | - |
| 아크릴폴리올 수지-3 | - | - | - | - | - | - | 10 |
| 폴리에스터 수지-1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 경화 촉진제 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 용제-1(DBE) | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 용제-2(PMA) | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 용제-3(BA) | 14 | 6 | 11 | 11 | 11 | 11 | 11 |
| 아마이드 왁스 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 이소시아네이트 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 총량 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| 성분 (중량%) | 실시예 15 | 실시예 16 | 실시예 17 | 실시예 18 |
| 알루미늄계 안료-1 | 8 | 8 | 8 | 8 |
| 니트로셀룰로오스 수지-1 | - | - | 50 | 50 |
| 니트로셀룰로오스 수지-2 | 50 | - | - | - |
| 니트로셀룰로오스 수지-3 | - | 50 | - | - |
| 아크릴폴리올 수지-1 | 10 | 10 | 10 | 10 |
| 폴리에스터 수지-1 | 5 | 5 | - | - |
| 폴리에스터 수지-2 | - | - | 5 | - |
| 폴리에스터 수지-3 | - | - | - | 5 |
| 경화 촉진제 | 1 | 1 | 1 | 1 |
| 용제-1(DBE) | 2 | 2 | 2 | 2 |
| 용제-2(PMA) | 4 | 4 | 4 | 4 |
| 용제-3(BA) | 11 | 11 | 11 | 11 |
| 아마이드 왁스 | 6 | 6 | 6 | 6 |
| 이소시아네이트 | 3 | 3 | 3 | 3 |
| 총량 | 100 | 100 | 100 | 100 |
| 성분 (중량%) | 비교예 1 | 비교예 2 | 비교예 3 | 비교예 4 |
| 알루미늄계 안료-1 | 8 | 8 | 8 | 8 |
| 니트로셀룰로오스 수지-1 | 55 | 60 | - | 50 |
| 아크릴폴리올 수지-1 | 10 | - | 60 | - |
| 아크릴폴리올 수지-4(미변성) | - | - | - | 10 |
| 폴리에스터 수지-1 | - | 5 | 5 | 5 |
| 경화 촉진제 | 1 | 1 | 1 | 1 |
| 용제-1(DBE) | 2 | 2 | 2 | 2 |
| 용제-2(PMA) | 4 | 4 | 4 | 4 |
| 용제-3(BA) | 11 | 11 | 11 | 11 |
| 아마이드 왁스 | 6 | 6 | 6 | 6 |
| 이소시아네이트 | 3 | 3 | 3 | 3 |
| 총량 | 100 | 100 | 100 | 100 |
| 성분 | 제조사 및 제품명 | 비고 |
| 알루미늄계 안료-1 | - | 다각기둥형(높이: 80㎛, 밑면의 다각형의 외접원의 평균 직경: 8㎛) |
| 알루미늄계 안료-2 | - | 원기둥형(높이: 80㎛, 밑면의 평균 직경: 7㎛) |
| 알루미늄계 안료-3 | - | 다각기둥형(높이: 40㎛, 밑면의 다각형의 외접원의 평균 직경: 7㎛) |
| 알루미늄계 안료-4 | - | 원기둥형(높이: 30㎛, 밑면의 평균 직경: 10㎛) |
| 니트로셀룰로오스(NC) 수지-1 | - | Mw: 300,000g/mol, Mn: 30,000g/mol, NC 함량: 5.5중량% |
| 니트로셀룰로오스 수지-2 | - | Mw: 200,000g/mol, Mn: 20,000g/mol, NC 함량: 4중량% |
| 니트로셀룰로오스 수지-3 | - | Mw: 400,000g/mol, Mn: 40,000g/mol, NC 함량: 7중량% |
| 아크릴폴리올 수지-1 | - | CAB 변성 아크릴폴리올 수지(CAB 함량: 7.5중량%, OHv: 30mgKOH/g, Av: 7.5mgKOH/g, Tg: 2.5℃, Mw: 125,000g/mol) |
| 아크릴폴리올 수지-2 | - | CAB 변성 아크릴폴리올 수지(CAB 함량: 5중량%, OHv: 40mgKOH/g, Av: 5mgKOH/g, Tg: 1℃, Mw: 100,000g/mol) |
| 아크릴폴리올 수지-3 | - | CAB 변성 아크릴폴리올 수지(CAB 함량: 10중량%, OHv: 60mgKOH/g, Av: 10mgKOH/g, Tg: 5℃, Mw: 150,000g/mol) |
| 아크릴폴리올 수지-4(미변성) | - | 미변성 아크릴폴리올 수지(OHv: 40mgKOH/g, Av: 5mgKOH/g, Tg: 1℃, Mw: 150,000g/mol) |
| 폴리에스터 수지-1 | - | Mn: 2,000g/mol, Tg: -15℃, Av: 5mgKOH/g, OHv: 135mgKOH/g |
| 폴리에스터 수지-2 | - | Mn: 1,000g/mol, Tg: -30℃, Av: 1mgKOH/g, OHv: 120mgKOH/g |
| 폴리에스터 수지-3 | - | Mn: 3,000g/mol, Tg: 0℃, Av: 10mgKOH/g, OHv: 150mgKOH/g |
| 경화 촉진제 | - | 디부틸틴 디라우레이트(DBTDL) |
| 아마이드 왁스 | 제조사: 흥산화성, 제품명: HPA-405 | - |
| 이소시아네이트 | 제조사: ASAHI KASEI CHEMICALS, 제품명: DURANATE K-6000 |
| 항목 | 휘도 | 부착성 | 내수성 | 촉진내후성 | 고압세차성 | 작업성 |
| 실시예 1 | 26.5 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 2 | 26.5 | ○ | ○ | ○ | ○ | ○ |
| 실시예 3 | 26.5 | ○ | ○ | ○ | ○ | ○ |
| 실시예 4 | 25 | ○ | ○ | ○ | ○ | ○ |
| 실시예 5 | 26.5 | ○ | ○ | ○ | ○ | ○ |
| 실시예 6 | 26.5 | ○ | ○ | ○ | ○ | ○ |
| 실시예 7 | 26.5 | ○ | ○ | ○ | ○ | ○ |
| 실시예 8 | 22 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 9 | 25 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 10 | 26.5 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 11 | 26.5 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 12 | 26.5 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 13 | 22 | ○ | ◎ | ◎ | ◎ | ◎ |
| 실시예 14 | 27 | ◎ | ◎ | ◎ | ◎ | ○ |
| 실시예 15 | 25 | ○ | ◎ | ◎ | ◎ | ◎ |
| 실시예 16 | 22 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 17 | 22 | ◎ | ◎ | ◎ | ◎ | ◎ |
| 실시예 18 | 25 | ◎ | ◎ | ◎ | ◎ | ○ |
| 비교예 1 | 25 | △ | ○ | ○ | △ | × |
| 비교예 2 | 5 | ○ | △ | △ | ○ | × |
| 비교예 3 | 15 | △ | △ | △ | △ | × |
| 비교예 4 | 15 | ○ | ○ | ○ | ○ | △ |
Claims (6)
- 아크릴폴리올 수지, 폴리에스터 수지, 니트로셀룰로오스 수지 및 안료를 포함하는, 베이스 도료 조성물.
- 청구항 1에 있어서,상기 폴리에스터 수지는 수평균분자량이 800 내지 5,000 g/mol이고, 유리전이온도가 0℃ 이하이며, 산가가 1 내지 30 mgKOH/g인, 베이스 도료 조성물.
- 청구항 1에 있어서,상기 아크릴폴리올 수지는 셀룰로오스 아세테이트 부틸레이트(CAB) 변성 아크릴 수지이며, 수산기가가 30 내지 80 mgKOH/g이고, 유리전이온도가 1 내지 20 ℃이며, 중량평균분자량이 100,000 내지 200,000 g/mol인, 베이스 도료 조성물.
- 청구항 1에 있어서,상기 니트로셀룰로오스 수지는 중량평균분자량이 100,000 내지 500,000 g/mol이고, 수평균분자량이 10,000 내지 50,000 g/mol인, 베이스 도료 조성물.
- 청구항 1에 있어서,상기 안료는 원기둥 또는 다각기둥형이고, 높이가 10 내지 150 ㎛인 알루미늄계 안료를 포함하는 것인, 베이스 도료 조성물.
- 청구항 1에 있어서,5 내지 15 중량%의 아크릴폴리올 수지, 1 내지 20 중량%의 폴리에스터 수지, 30 내지 60 중량%의 니트로셀룰로오스 수지 및 1 내지 15 중량%의 안료를 포함하는, 베이스 도료 조성물.
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| US18/857,469 US20250270416A1 (en) | 2022-06-10 | 2023-04-26 | Base paint composition |
| CN202380037619.7A CN119137227A (zh) | 2022-06-10 | 2023-04-26 | 面漆组合物 |
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| KR (1) | KR102716365B1 (ko) |
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| WO (1) | WO2023239052A1 (ko) |
Citations (5)
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|---|---|---|---|---|
| JP2004513209A (ja) * | 2000-11-06 | 2004-04-30 | アクゾ ノーベル ナムローゼ フェンノートシャップ | 溶剤系コーティング組成物 |
| KR20060052309A (ko) * | 2004-10-29 | 2006-05-19 | 간사이 페인트 가부시키가이샤 | 도료 조성물 |
| JP2013040293A (ja) * | 2011-08-18 | 2013-02-28 | Kansai Paint Co Ltd | 多成分系のベースコート塗料、調色方法及び補修塗装方法 |
| JP2015074720A (ja) * | 2013-10-09 | 2015-04-20 | 関西ペイント株式会社 | クリヤー塗料組成物及びこれを用いた補修塗装方法 |
| KR20210043375A (ko) * | 2019-10-11 | 2021-04-21 | 주식회사 케이씨씨 | 베이스 도료 조성물 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10144837B2 (en) * | 2014-05-06 | 2018-12-04 | Basf Coatings Gmbh | Method for delivering aluminum into waterborne tint base or paint and refinish mixer system |
| KR101843288B1 (ko) | 2016-10-26 | 2018-03-28 | 강남제비스코 주식회사 | 1액형 자연건조형 메탈릭 베이스코트 도료 조성물 |
-
2022
- 2022-06-10 KR KR1020220071017A patent/KR102716365B1/ko active Active
-
2023
- 2023-04-26 US US18/857,469 patent/US20250270416A1/en active Pending
- 2023-04-26 WO PCT/KR2023/005681 patent/WO2023239052A1/ko not_active Ceased
- 2023-04-26 CN CN202380037619.7A patent/CN119137227A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004513209A (ja) * | 2000-11-06 | 2004-04-30 | アクゾ ノーベル ナムローゼ フェンノートシャップ | 溶剤系コーティング組成物 |
| KR20060052309A (ko) * | 2004-10-29 | 2006-05-19 | 간사이 페인트 가부시키가이샤 | 도료 조성물 |
| JP2013040293A (ja) * | 2011-08-18 | 2013-02-28 | Kansai Paint Co Ltd | 多成分系のベースコート塗料、調色方法及び補修塗装方法 |
| JP2015074720A (ja) * | 2013-10-09 | 2015-04-20 | 関西ペイント株式会社 | クリヤー塗料組成物及びこれを用いた補修塗装方法 |
| KR20210043375A (ko) * | 2019-10-11 | 2021-04-21 | 주식회사 케이씨씨 | 베이스 도료 조성물 |
Also Published As
| Publication number | Publication date |
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| KR102716365B1 (ko) | 2024-10-11 |
| US20250270416A1 (en) | 2025-08-28 |
| KR20230170484A (ko) | 2023-12-19 |
| CN119137227A (zh) | 2024-12-13 |
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