KR101803437B1 - Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same - Google Patents
Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same Download PDFInfo
- Publication number
- KR101803437B1 KR101803437B1 KR1020160025559A KR20160025559A KR101803437B1 KR 101803437 B1 KR101803437 B1 KR 101803437B1 KR 1020160025559 A KR1020160025559 A KR 1020160025559A KR 20160025559 A KR20160025559 A KR 20160025559A KR 101803437 B1 KR101803437 B1 KR 101803437B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- range
- vinyl monomer
- coating composition
- Prior art date
Links
Classifications
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
-
- 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
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
Abstract
The present invention relates to a transparent coating composition for self-repairing automotive repairing which is used by mixing a hardening agent and a clear clear coating agent to form a scratch-resistant transparent film by coating the object, wherein the transparent clear coating agent has a glass transition temperature of -15 to & 10 to 30 parts by weight of an acrylic polyol resin A having a number average molecular weight in the range of 1,000 to 5,000 and an OH content in the range of 2 to 4% by weight on a solid basis; Having a glass transition temperature in the range of -90 to -50 占 폚, a number average molecular weight in the range of 3,000 to 7,000, and an OH content in the range of 1 to 4% by weight in terms of solids, obtained by reacting polyether with hydrolytic diisocyanate, 10 to 30 parts by weight of a polyether resin and 20 to 40 parts by weight of an acrylic polyol resin B having a glass transition temperature in the range of 20 to 40 占 폚, a number average molecular weight in the range of 1,000 to 6,000 and an OH content in the range of 3 to 5% Part and an extra solvent.
Description
The present invention relates to a transparent coating composition for self-healing and a method for forming a transparent coating film using the same, and more particularly to a scratch-resistant clear coating composition which is excellent in appearance gloss and workability and can be self- And a method for restoring a coated film using the same.
Development of transparent coating materials has been proceeding in consideration of the characteristics of appearance, drying, and workability as important factors in the technology of producing transparent coatings. Conventional transparent paints have been developed mainly for appearance and drying, but recently, there have been many consumers who are looking for environmental problems and special functions.
Two-part paint using an isocyanate hardener for acrylic urethane paint is generally used as a transparent paint. Since these scratches are easily generated by the external force and it is difficult to restore the scratches, it is highly satisfactory in terms of physical properties not. For this reason, studies for development of paints having excellent scratch resistance have been continuing, but until now, satisfactory results have not been obtained due to quality problems such as deterioration of appearance gloss and poor drying.
The self-restoring paint has the advantage of reducing the frequent repair coating due to scratches and reducing the VOC generated during the coating process, thus being eco-friendly.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a clear coating composition for self-healing, which can prevent scratches caused by externally applied force and can easily restore the generated scratches.
Another object of the present invention is to provide a method for forming an anti-scratch transparent coating film formed using the transparent coating composition for self-healing.
The scratch-resistant coating composition for realizing the object of the present invention described above is a clear coating composition for self-healing in automobiles, which is used by mixing a hardener and a preliminary clear coating agent to form a scratch-resistant transparent film by coating a target object . Here, the preliminary clear coating material preparation is an acrylic polyol resin A having a glass transition temperature in the range of -15 to 25 占 폚, a number average molecular weight in the range of 1,000 to 5,000, and an OH content in the range of 2 to 4% part; Having a glass transition temperature in the range of -90 to -50 占 폚, a number average molecular weight in the range of 3,000 to 7,000, and an OH content in the range of 1 to 4% by weight in terms of solids, obtained by reacting polyether with hydrolytic diisocyanate, 10 to 30 parts by weight of a polyether resin and 20 to 40 parts by weight of an acrylic polyol resin B having a glass transition temperature in the range of 20 to 40 占 폚, a number average molecular weight in the range of 1,000 to 6,000 and an OH content in the range of 3 to 5% Part and an extra solvent.
In the transparent coating composition for self-healing according to an embodiment of the present invention, the curing agent and the preliminary clear coating agent may be mixed in a volume ratio of 1: 1.5 to 2.5. In addition, the clear coating composition for self-healing may further comprise an additive including a UV absorber, a light stabilizer, a leveling agent, a surface modifier, and a urethane catalyst.
In the transparent coating composition for self-healing according to an embodiment of the present invention, the organic solvent content may be 450 to 500 g / l.
The clear coating composition for self-healing according to an embodiment has a hydroxy equivalent and an isocyanate equivalent of 1: 0.9 to 1.1, a nonvolatile content of 50% by weight or more in the coating composition, and a viscosity range of the coating composition of the Poid Cup # 4 viscometer Lt; RTI ID = 0.0 > 25 C < / RTI >
In the transparent coating composition for self-healing according to an embodiment of the present invention, the acryl polyol resin A is a copolymer of 20 to 40 parts by weight of a vinyl monomer having an aromatic group, 20 to 40 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of a vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group.
In the transparent coating composition for self-healing according to an embodiment of the present invention, the acryl polyol resin B is a copolymer of 40 to 60 parts by weight of a vinyl monomer having an aromatic group, 10 to 30 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of a vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group.
In the transparent coating composition for self-healing according to an embodiment of the present invention, the resin-modified polyether resin may be formed by synthesizing 70 to 95 parts by weight of a vinyl monomer and 10 to 20 parts by weight of a vinyl monomer having an aliphatic group .
In another aspect of the present invention, there is provided a method for forming a transparent film, comprising the steps of: applying a transparent coating composition for self-healing to a coated object; And a transparent coating composition coated on the object is dried to form an inner scratch-resistant transparent coating film.
The transparent coating composition for self-healing is superior in self-restoring force as compared with a general acrylic urethane clear coating. In addition, the formed transparent coating film prevents the occurrence of scratches caused by external force, and the generated scratches are easily It is possible to restore it. As a result, it is a result of reducing frequent maintenance paintings, and it has the effect of saving environment-friendly by reducing the VOC generated during painting.
Hereinafter, the present invention will be described in more detail. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are further described in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
In this application, the terms "comprises" or "having", etc. are intended to specify the presence of stated features, components, steps, processes, compositions, or combinations thereof in the specification, and not to limit the presence or addition of one or more other features or components, Steps, processes, compositions, or combinations thereof, which are not intended to be limiting. Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with the meaning in the context of the related art, and unless otherwise explicitly defined in the present application, ideally or excessively, I will explain.
The clear coating composition for self-healing according to an embodiment of the present invention is a two-part type coating material used for forming a scratch-resistant transparent film by coating a target object, wherein a hardening agent and a preliminary clear coating agent are mixed before coating.
The preliminary clear coating formulation used as the subject of the clear coating composition for self-healing according to the present invention comprises 10 to 25 parts by weight of the acrylic polyol resin A, 10 to 30 parts by weight of the urethane-modified polyether resin, 20 to 40 parts by weight of an acrylic polyol resin B, 20 to 40 parts by weight of other additives and an organic solvent.
Specifically, the acrylic polyol resin A corresponding to the first component of the present invention has a glass transition temperature in the range of -15 to 25 ° C, a number average molecular weight in the range of 1,000 to 5,000, an OH content in the range of 2 to 4% , And is preferably an acrylic polyol synthesized by using BA (n-butyl acrylate) as a main axis for quick drying and imparting flexibility of a coating film.
Particularly, the acrylic polyol resin A comprises 20 to 40 parts by weight of an aromatic vinyl-based monomer, 20 to 40 parts by weight of a vinyl-based monomer having a hydroxyl group, 1 to 5 parts by weight of a vinyl-based monomer having an organic acid group, 10 to 40 parts by weight may be synthesized.
The acrylic polyol resin A is applied to a clear coating composition for self-healing, thereby improving the dryness of the coating material and improving the flexibility of the coating film. Therefore, the acrylic polyol resin A is a resin that imparts a function of preventing the occurrence of initial scratches and a function of restoring the generated scratches in the transparent paint, and when the external force is not severe, There is no mark left. Therefore, the transparent paint of the present invention to which the acrylic polyol resin A is applied has a smaller scratch and a higher OH content than that of a general transparent paint, so that the elasticity is further increased at high crosslink density when reacted with isocyanate, .
As an example, the acrylic polyol resin A is used in a range of 10 to 30 parts by weight based on 100 parts by weight of the coating composition. If the amount is less than 10 parts by weight, the physical properties such as chemical resistance and flex resistance tend to deteriorate. If the amount is more than 30 parts by weight, appearance and drying may be deteriorated.
The urethane-modified polyether resin, which is the second component contained in the transparent coating composition for self-healing of the present invention, is obtained by reacting polyether with hydrolytic diisocyanate in order to impart restoration power of coating film and improve dryability, and has a glass transition temperature of -90 To -50 < 0 > C, number average molecular weight ranging from 3,000 to 7,000, and OH content ranging from 1 to 4% by weight on a solids basis.
Polyether having excellent function of imparting flexibility to a coating film has a very low mass-average molecular weight and is low in reactivity, and when applied in a small amount within 5% by weight of the coating composition, there arises a problem of poor drying. Therefore, the polyether terminal was reacted with hydrolytic diisocyanate to form a urethane bond, thereby improving the molecular weight, thereby completing the portion where the dryness is decreased. When the OH content is less than 2% by weight, the viscosity increases and the workability is poor. When the OH content is less than 4% by weight, When it is more than one day, the reactivity is slowed down.
The urethane-modified polyether resin is preferably used in an amount of 10 to 30 parts by weight based on 100 parts by weight of the entire coating composition. If the amount is less than 10 parts by weight, scratch resistance and film restoring force are insignificant. When the amount is more than 30 parts by weight, dryability is poor and workability is poor.
And the acrylic polyol resin B as the third component of the coating composition of the present invention. The acrylic polyol resin B has a glass transition temperature in the range of 50 to 60 캜, a number average molecular weight in the range of 1,000 to 6,000, and an OH content in the range of 3 to 6% by weight on a solid basis.
The acrylic polyol resin B applied to the present invention is an acryl polyol synthesized with a main axis of styrene monomer (SM) and acetoacetoxy ethyl methacrylate (AAEM) in order to increase the luster of the coating film, and has a number average molecular weight of 1,000 to 6,000, 3 to 5% by weight, a glass transition temperature of 20 to 40 占 폚, excellent appearance gloss and fast drying.
For example, the amount of the acrylic polyol resin B may be in the range of 20 to 40 parts by weight based on 100 parts by weight of the coating composition. If the amount is less than 20 parts by weight, the gloss of the coating film is lowered and dryness is decreased. If the amount of the coating is more than 40 parts by weight, the formed coating film is unstable and the self-restoring force is remarkably decreased.
The curing agent used in the present invention includes a isocyanate-based resin, and a hexamethylene diisocyanate-based trimer-type resin can be used, and if necessary, an allophanate-type resin can also be used. In addition, hardener resins commonly used in this field can be used without exception.
In the present invention, the curing agent may be used in a volume ratio of about 1.5 to 2.5: 1 (preliminary clear coating agent: curing agent) based on the amount of the transparent coating agent used in forming the transparent coating composition. At this time, the curing agent used is a mixture of an isocyanate curing agent and an organic solvent (XYLENE, BU-AC ((butyl acetate)) in a ratio of about 1: 0.8 to 1.2, It is possible to secure the storage stability.
When the amount of the curing agent used is less than the above-mentioned ratio based on the volume ratio, the crosslinking density of the coating film is not dense and it is difficult to secure the physical properties. If the amount of the curing agent used exceeds the volume ratio, the curing time is shortened It has no effect.
Examples of the solvent that can be used in the present invention include BTX organic solvents including XYLENE and TOLUENE, Methyl isobutyl ketone (MIBK), butyl acetate (ACE), ketone organic solvents including Acetone, and the like.
In addition, the coating composition of the present invention may further include various additives including a UV absorber, a light stabilizer, a leveling agent, a surface modifier, and a urethane catalyst, if necessary.
The coating composition containing various components as described above preferably has a nonvolatile content of 45% by weight or more in the composition and a viscosity range of the coating composition is in the range of 15 to 20 seconds at 25 캜 with a Four Cup # 4 viscometer.
The clear coating composition for self-healing prepared according to the embodiment of the present invention is preferably applied to an automobile repairing process. In this case, the clear coating composition is applied to the top coating process after the undercoating process and the intermediate coating process. That is, when the intermediate coating process is completed, a basecoat color paint is applied, and then a transparent coating composition for self-healing is applied to finish the coating process.
Method for forming a coating film using a scratch-resistant transparent paint
First, a clear coating composition for self-scratching self-healing is prepared, and then the clear coating composition for self-healing is coated on the surface of the coated object on which scratches have been generated.
It is preferable that the object is an automobile part on which the undercoating process and the intermediate painting process have been performed. That is, it is an automobile part to which basecoat color paint is applied after the middle painting process is completed.
Then, the transparent coating composition for self-healing coated on the object is dried to form a scratch-resistant transparent coating film.
When a scratch is generated in the transparent film of the present invention, scratches are self-recovered when heat of about 60 캜 is applied. Depending on the degree of scratches, the applied temperature and time may vary depending on the degree of scratches. As an example, and when treated at a high temperature, it can be recovered in a short time, and when treated at a low temperature, a long recovery time is required. In one embodiment, scratches can be recovered by heat treatment at a temperature ranging from 50 to 70 占 폚 for 2 to 6 hours, and a scratch can be recovered by heat treatment at a temperature of about 60 占 폚 for about 1 hour. In one embodiment, when scratches are present on the surface of the formed scratch-resistant transparent film, heat treatment may be performed to restore the scratch-formed coating film.
Hereinafter, the present invention will be described in more detail with reference to specific examples.
≪ Example 1 >
20 parts by weight of acrylic polyol A, 38 parts by weight of acrylic polyol B, 10 parts by weight of urethane-modified polyether resin, 1 part by weight of light stabilizer and UV absorber, 0.3 part by weight of leveling agent and 0.3 part by weight of urethane catalyst And 30 parts by weight of an organic solvent were added and stirred to prepare a first preliminary clear coating formulation.
Here, the acrylic polyol resin A used had a glass transition temperature in the range of -15 to 25 캜, a number average molecular weight in the range of 1,000 to 5,000, and an OH content in the range of 2 to 4% by weight on a solid basis. The acrylic polyol resin B has a glass transition temperature in the range of 20 to 40 캜, a number average molecular weight in the range of 1,000 to 6,000, and an OH content in a range of 3 to 5% by weight on a solid basis. The urethane-modified polyether resin is obtained by reacting a polyether with a hydrolytic diisocyanate, and has a glass transition temperature in the range of -90 to -50 占 폚, a number average molecular weight in the range of 3,000 to 7,000, an OH content in the range of 1 4% by weight.
Hexamethylene diisocyanate in vessel 2 and XYLENE as an organic solvent were used and mixed in a ratio of 1: 1 to prepare a curing agent. Thereafter, the first preliminary clear coating formulation of the container 1 and the curing formulation of the container 2 were mixed at a volume ratio of 2: 1 to prepare a clear coating composition for self-healing.
≪ Example 2 >
A transparent coating composition for self-healing was prepared in the same manner as in Example 1 except that 20 parts by weight of acrylic polyol resin A, 30 parts by weight of acrylic polyol resin B, 20 parts by weight of urethane-modified polyether resin, 1 part by weight as an absorbent, 0.3 part by weight as a leveling agent, 0.3 part by weight as a urethane catalyst and 28 parts by weight of an organic solvent were added and stirred to prepare a second preliminary clear coating formulation.
≪ Comparative Example 1 &
A transparent coating composition for self-healing was prepared in the same manner as in Example 1 except that 70 parts by weight of acrylic polyol resin B, 1.0 part by weight as a light stabilizer and a UV absorber, 0.3 parts by weight as a leveling agent, 0.3 parts by weight as a urethane catalyst And 28 parts by weight of an organic solvent were added and stirred to prepare a third preliminary clear coating material preparation.
≪ Comparative Example 2 &
PPG CERAMIC CLEARCOAT D-8122 was used as a transparent coating composition for automobile maintenance of Deltron. The mixture of the base, the curing agent and the thinner was mixed at a volume ratio of 3: 1: 1. (PPG subject: D-8122, hardener: D-897, thinner: D-871)
Hereinafter, the transparent coating compositions prepared according to Examples and Comparative Examples and the physical properties of coating films formed using the transparent coating compositions were evaluated.
First, the prepared transparent coating composition was allowed to stand for 14 to 16 seconds with a Porous Cup # 4 viscometer at a relative humidity of 60% RH and an ambient temperature of 25 占 폚. Thereafter, the clear coating composition was coated on the specimen, and then subjected to natural curing and drying at room temperature without painting time and set time.
The specimen was a zinc phosphate surface-treated specimen. The specimen was painted in a thickness of 50 to 60 쨉 m on a front fender of an automobile and dried at 70 캜 for 20 minutes, After grinding, the base coat color paint (product of Noro Paint Co., Ltd., Hi-Cubi metallic color) was coated to a thickness of 15 to 20 탆. The clear coating compositions according to each of the examples and the comparative examples were spray-coated onto the prepared specimens twice to a thickness of 40 to 60 占 퐉 and dried at room temperature or 60 占 폚. The physical properties of the coating film were evaluated and the results are shown in Table 1 below. The physical properties evaluation method is as follows.
(1) Solid content: 1 to 3 g of the coating composition sample was taken after mixing the subject and the curing agent to a viscosity capable of spraying, and the solid content was measured after heating at 150 캜 for 2 hours.
(2) Pot life: It refers to the time required for the viscosity to reach twice as much as the spray viscosity after painting.
(3) Luster: The gloss after the base coat coating, the coating with the cream coat, and the heat treatment was measured.
(4) Scratch resistance: A lab-scale car wash apparatus was used. The water pressure was 3 bar, the brush speed was 150 rpm, the amount of water was 4 L / min, the wash cycle was 10, The mixture was tested at 1.5 g / L quartz powder (average particle size 16 μm) and water temperature at 20-25 ° C. The gloss retention was measured at angles? L25 / GR20 and 20?.
(5) Acid Resistance: A method of immersing in an aqueous 20% H 2 SO 4 solution for 24 hours and a method of dropping 0.1 to 1 g of a stock solution of sulfuric acid in a sulfuric acid solution The time was observed.
(6) Impact resistance: The degree of damage of the film was measured by dropping a weight of 500 g at a room temperature of 20 ° C by 50 cm.
(7) Immersion water resistance: Impregnation was carried out in a thermostatic bath at 40 ° C for 7 days to measure the surface state and adhesion of the coating film.
(8) Water resistance: It is the same as immersion resistance.
(9) Accelerated weathering: The general weathering test is to be left outside for a long time (3 years), but since it can not be reflected in the test, it is subjected to accelerated weathering test. The measurement method is in accordance with ASTM F1980.
From the results shown in Table 1, it can be seen that the coating film formed using the coating composition according to the embodiment of the present invention shows very good scratch resistance after the heat treatment. Particularly, it was confirmed that the scratch portion increased four times as compared with Comparative Example 1. It was also confirmed that Examples 1 and 2 have excellent glossiness as compared with Comparative Examples.
The scratch-resistant transparent coating composition according to the present invention has an excellent scratch resistance as compared with a general acrylic urethane clear coating, thus reducing the frequent repair coating. In addition, it is eco-friendly because it reduces VOC generated during painting by reducing frequent repair painting due to scratch.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. You will understand.
Claims (9)
The preliminary clear coating formulation
20 to 40 parts by weight of a vinyl monomer having an aromatic group, 20 to 40 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of an organic acid group-containing vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group 10 to 30 parts by weight of an acrylic polyol resin A having a glass transition temperature in the range of -15 to 25 占 폚, a number average molecular weight in the range of 1,000 to 5,000 and an OH content in the range of 2 to 4% by weight on a solid basis;
70 to 95 parts by weight of a vinyl monomer having a hydroxyl group and 10 to 20 parts by weight of a vinyl monomer having an aliphatic group and having a glass transition temperature in the range of -90 to -50 DEG C and a number average molecular weight in the range of 3,000 to 7,000, 10 to 30 parts by weight of a urethane-modified polyether resin having an OH content of 1 to 4% by weight on a solids basis;
40 to 60 parts by weight of a vinyl monomer having an aromatic group, 10 to 30 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of an organic acid group-containing vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group 20 to 40 parts by weight of an acrylic polyol resin B having a glass transition temperature in the range of 20 to 40 占 폚, a number average molecular weight in the range of 1,000 to 6,000 and an OH content in the range of 3 to 5% by weight on a solid basis; And
And 20 to 40 parts by weight of an organic solvent.
And drying the transparent coating composition coated on the object to form a transparent scratch-resistant coating film,
The preliminary clear coating formulation
20 to 40 parts by weight of a vinyl monomer having an aromatic group, 20 to 40 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of an organic acid group-containing vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group 10 to 30 parts by weight of an acrylic polyol resin A having a glass transition temperature in the range of -15 to 25 占 폚, a number average molecular weight in the range of 1,000 to 5,000 and an OH content in the range of 2 to 4% by weight on a solid basis;
70 to 95 parts by weight of a vinyl monomer having a hydroxyl group and 10 to 20 parts by weight of a vinyl monomer having an aliphatic group and having a glass transition temperature in the range of -90 to -50 DEG C and a number average molecular weight in the range of 3,000 to 7,000, 10 to 30 parts by weight of a urethane-modified polyether resin having an OH content of 1 to 4% by weight on a solids basis;
40 to 60 parts by weight of a vinyl monomer having an aromatic group, 10 to 30 parts by weight of a vinyl monomer having a hydroxyl group, 1 to 5 parts by weight of an organic acid group-containing vinyl monomer, and 10 to 40 parts by weight of a vinyl monomer having an aliphatic group 20 to 40 parts by weight of an acrylic polyol resin B having a glass transition temperature in the range of 20 to 40 占 폚, a number average molecular weight in the range of 1,000 to 6,000 and an OH content in the range of 3 to 5% by weight on a solid basis; And
And 20 to 40 parts by weight of an organic solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160025559A KR101803437B1 (en) | 2016-03-03 | 2016-03-03 | Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160025559A KR101803437B1 (en) | 2016-03-03 | 2016-03-03 | Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170103162A KR20170103162A (en) | 2017-09-13 |
| KR101803437B1 true KR101803437B1 (en) | 2017-12-28 |
Family
ID=59968069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020160025559A KR101803437B1 (en) | 2016-03-03 | 2016-03-03 | Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101803437B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023158225A1 (en) * | 2022-02-15 | 2023-08-24 | 한국화학연구원 | Self-healing and recyclable polyurethane polymer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240035257A (en) * | 2022-09-08 | 2024-03-15 | 주식회사 케이씨씨 | Water-soluble base coat composition |
-
2016
- 2016-03-03 KR KR1020160025559A patent/KR101803437B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023158225A1 (en) * | 2022-02-15 | 2023-08-24 | 한국화학연구원 | Self-healing and recyclable polyurethane polymer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170103162A (en) | 2017-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4499150A (en) | Color plus clear coating method utilizing addition interpolymers containing alkoxy silane and/or acyloxy silane groups | |
| US4499151A (en) | Color plus clear coating method utilizing addition interpolymers containing alkoxy silane and/or acyloxy silane groups | |
| US8236895B2 (en) | Paint compositions, a method of finish-painting and painted objects | |
| CN108463522B (en) | Multilayer coating and shaped article comprising the same | |
| KR940011198B1 (en) | Process for painting a polyolefinic resin component | |
| KR101803437B1 (en) | Auto Healing Clear Paint Composition And Method Of Forming Clear Layer Using The Same | |
| KR20170130210A (en) | Clear Paint Composition | |
| KR101435968B1 (en) | Anti-scratch clear paint composition and method of manufacturing paint film using the same | |
| KR101780957B1 (en) | Transparent coating composition for prepairing automobile | |
| KR20090049073A (en) | Resin compositions for coatings and coating compositions wherein these are used | |
| JP4539688B2 (en) | Reactive diluent for modifying thermosetting coating composition and coating composition using the same | |
| WO2007007146A2 (en) | Paint compositions and painted objects | |
| KR101826058B1 (en) | Anti-pollutant clear coating composition and method of manufacturing clear protecting layer using the same | |
| JP6762209B2 (en) | Topcoat paint composition mainly composed of acrylic resin and melamine resin | |
| CN114466705A (en) | High gloss, polishable coatings with matte and/or structured metallic effect and method of making same | |
| JP2922915B2 (en) | Thermosetting coating composition | |
| JP2013215887A (en) | Metallic plastic and method of coating plastic | |
| JP3133042B2 (en) | Polyurethane lacquers, spray diluents for polyurethane lacquers and methods for spraying lacquers on polystyrene-containing substrates | |
| JP4280137B2 (en) | Repair painting method | |
| CN113272394B (en) | Water-based finish paint composition | |
| CN110709480B (en) | Coating for producing structured surfaces | |
| JPH1046100A (en) | Coating composition and formation of coating film | |
| KR101735419B1 (en) | Coating Composition for PCM Color Steel Sheet and PCM Color Steel Sheet Using the Same | |
| JP3012299B2 (en) | Thermosetting paint | |
| JPH1060367A (en) | Thermosetting coating composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| AMND | Amendment | ||
| E601 | Decision to refuse application | ||
| AMND | Amendment | ||
| X701 | Decision to grant (after re-examination) | ||
| GRNT | Written decision to grant |