WO2017200228A1 - Transparent paint composition - Google Patents

Transparent paint composition Download PDF

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Publication number
WO2017200228A1
WO2017200228A1 PCT/KR2017/004603 KR2017004603W WO2017200228A1 WO 2017200228 A1 WO2017200228 A1 WO 2017200228A1 KR 2017004603 W KR2017004603 W KR 2017004603W WO 2017200228 A1 WO2017200228 A1 WO 2017200228A1
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WO
WIPO (PCT)
Prior art keywords
polyol resin
acrylic polyol
resin
weight
coating composition
Prior art date
Application number
PCT/KR2017/004603
Other languages
French (fr)
Korean (ko)
Inventor
조영석
정현철
마상찬
정윤정
박순규
Original Assignee
주식회사 케이씨씨
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Publication of WO2017200228A1 publication Critical patent/WO2017200228A1/en

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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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • 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
    • 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
    • C09D7/20—Diluents or solvents
    • 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
    • C09D7/65—Additives macromolecular

Definitions

  • the present invention relates to a transparent coating composition for automobile bumpers, and more particularly, to an oil-soluble transparent coating composition which is excellent in coating film properties and appearance, and has excellent coating properties such as hardness, water resistance and weather resistance.
  • VOCs volatile organic compounds
  • Korean Patent No. 10-0558086 discloses a high solid transparent paint having high dryness and excellent acid resistance and scratch resistance by applying a low viscosity high solid acrylic resin.
  • the coating proceeds with a multilayer coating consisting of a primer-base-transparent coating layer.
  • the coating film dryness decreases when painting with a water-soluble coating in the robot coating line. Due to problems in painting workability, oil-soluble transparent coatings are being applied, and development of oil-soluble high-solids transparent coatings that can enhance the appearance and appearance of coatings is required.
  • the present invention is to provide a two-component oil-soluble transparent coating composition that can realize coating properties such as excellent hardness and water resistance and excellent hardness, water resistance and weather resistance.
  • the present invention is to provide an automotive part comprising a transparent paint layer formed using the two-component oil-soluble transparent paint composition.
  • the present invention is a two-component oil-soluble transparent coating composition
  • a resin composition comprising an acrylic polyol resin, a polyester polyol resin and a solvent and a curing agent, wherein the acrylic polyol resin has a solid content of 60 to 66 wt% and a hydroxyl value of 80 to 100 mgKOH / g, and a first acrylic polyol resin having a glass transition temperature (Tg) of 20 to 40, a solid content of 70 to 80 wt%, a hydroxyl value of 120 to 160 mgKOH / g, and a glass transition temperature (Tg) of 0 to 20
  • Tg glass transition temperature
  • the first acrylic polyol resin and the second acrylic polyol resin may be included in a weight ratio of 1: 3 to 1: 7.
  • the acrylic polyol resin may be included in 40 to 70% by weight relative to the total resin composition.
  • the polyester polyol resin may include a polyester polyol resin having a solid content of 50 to 70% by weight and a hydroxyl value of 120 to 180 mgKOH / g.
  • the polyester polyol resin may be included in 10 to 35% by weight relative to the total resin composition.
  • the resin composition may further include an additive.
  • the additive may include a polysiloxane-based surface modifier and a non-silicone-based surface modifier.
  • the solvent may include an ester solvent and a ketone solvent.
  • the present invention provides an automotive part comprising a transparent paint layer formed using the two-component oil-soluble transparent paint composition.
  • the two-part oil-soluble transparent coating composition according to the present invention can provide a coating film excellent in physical properties such as appearance, adhesion, water resistance, high-pressure car wash resistance, weather resistance, as well as excellent painting workability.
  • One embodiment of the present invention is a two-component oil-soluble transparent coating composition
  • an acrylic polyol resin having a hydroxyl value of 80 to 100 mgKOH / g, and a glass transition temperature (Tg) of 20 to 40, a solid content of 70 to 80 wt%, a hydroxyl value of 120 to 160 mgKOH / g, and a glass transition temperature (Tg)
  • Tg glass transition temperature
  • the acrylic polyol resin has a solid content of 60 to 66% by weight (based on the total weight of the first acrylic polyol resin), a hydroxyl value of 80 to 100 mgKOH / g, and a glass transition temperature (Tg).
  • Tg glass transition temperature
  • the acrylic polyol resin may include a first acrylic polyol resin and a second acrylic polyol resin in a weight ratio of 1: 3 to 1: 7.
  • the salvage property may be lowered, so that painting workability may be degraded or it may be difficult to provide excellent appearance characteristics.
  • Acrylic polyol resin according to an embodiment of the present invention is 2-hydroxymethyl (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) acrylate, 1,6-hexanediol di (meth) acrylic Acrylic monomers having at least one or more hydroxyl groups, such as rates, alone, mixtures thereof, or polymers thereof.
  • the acrylic polyol resin is an acrylic monomer having at least one hydroxyl group and styrene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate or Mixtures thereof may be copolymerized.
  • the resin composition according to the exemplary embodiment of the present invention may include the acrylic polyol resin in an amount of 40 to 70 wt% with respect to the total resin composition, and specifically, may include 55 to 65 wt%.
  • the acrylic polyol resin is included in less than 40% by weight, the salvability of the coating film may be reduced, and when included in more than 70% by weight, the coating film appearance characteristics may be reduced.
  • the polyester polyol resin may include a polyester polyol resin having a solid content of 50 to 70% by weight (based on the total weight of the polyester polyol resin) and a hydroxyl value of 120 to 180 mgKOH / g. Can be.
  • the polyester polyol resin may be a resin produced by a condensation reaction of a glycol monomer and a monomer having an acid group.
  • glycol monomers include neopentyl glycol, trimethylolpropane, diethylene glycol, triethylene glycol, 1,6-hexanediol, 1,4-butanediol, 1,4-cyclohexane amethanol, and mixtures thereof.
  • the monomer having an acid group include terephthalic acid, maleic anhydride, fumaric acid, phthalic anhydride, isophthalic acid, tetrahydrophthalic anhydride, adipic acid and mixtures thereof.
  • the polyester polyol resin is used to improve the appearance, curing density, adhesion, moisture resistance, impact resistance and the like of the coating film.
  • the resin composition according to an embodiment of the present invention may include the polyester polyol resin in an amount of 10 to 35% by weight based on the total resin composition, and specifically, may include 15 to 25% by weight.
  • the polyester polyol resin is included in less than 10% by weight, the appearance of the coating film may be lowered, and when included in excess of 35% by weight, the hardness of the coating film may be lowered.
  • the said solvent is used to maintain the thickness of a coating film, and to improve coating workability.
  • the solvent may be a nonpolar solvent such as n-heptane, toluene, xylene, petroleum compound, n-hexane; Ethyl acetate, n-butyl acetate, isobutyl acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate, dibasic esters, 3-methoxy butyl acetate, amyl acetate, butyl glycol acetate, butyl cellosolve acetate, methyl Polar solvents such as ethyl ketone, methyl isobutyl ketone, acetone, diisobutyl ketone, isophorone and cyclohexanone; And at least one of the mixture of the nonpolar solvent and the polar solvent can be appropriately selected and used in accordance with the properties of the resin
  • the solvent may include a ketone solvent and an ester solvent.
  • the resin composition according to one embodiment of the present invention may contain the solvent in an amount of 10 to 30% by weight based on the total resin composition. If the solvent is contained in less than 10% by weight, it may be difficult to obtain the effect due to the use of the solvent, when contained in more than 30% by weight may reduce the adhesion and durability of the coating film.
  • the resin composition may further include an additive.
  • the resin composition is a curing accelerator (or curing catalyst) as an additive to promote the reaction of the resin (acrylic polyol resin and polyester polyol resin) and the curing agent to shorten the coating film drying and curing time It may further comprise.
  • the curing accelerator may be selected from tetramethyl butane diamine, bicyclooctane, dibutyltin dilaurate, triethylene diamine and mixtures thereof.
  • the amount of the curing accelerator is not particularly limited, but may be included in an amount of 0.01 to 1.0 wt% based on the total resin composition.
  • the curing accelerator is included in less than 0.01% by weight, the drying properties and the coating film properties may be lowered, and when included in excess of 1.0% by weight, the appearance degradation and pot life may be shortened.
  • the resin composition may further include a surface adjuster as an additive to adjust the surface tension of the coating composition.
  • a surface adjuster as an additive to adjust the surface tension of the coating composition.
  • an additive generally used in the coating composition to adjust the surface tension may be used.
  • a polysiloxane surface modifier and / or a non-silicone surface modifier may be used.
  • the amount of the surface modifier is not particularly limited, but may be included in an amount of 0.1 to 1.0 wt% based on the total resin composition. If the surface modifier is included in less than 0.1% by weight, the appearance may be lowered, and when included in excess of 1.0% by weight, adhesion may be lowered when repainting.
  • the resin composition may further include a ultraviolet absorber as an additive.
  • the ultraviolet absorber is stronger than the chromophore of the acrylic polyol resin to inhibit the generation of radicals of the acrylic polyol resin and is effective in preventing discoloration, swelling, delamination, and loss of gloss of the acrylic polyol resin.
  • hydroxyphenyl benzotriazole may be used as the ultraviolet absorber.
  • the amount of the ultraviolet absorbent is not particularly limited, but may be included in an amount of 1 to 10% by weight based on the total resin composition. If the ultraviolet absorbent paper is included in excess of 10% by weight, a problem of cost increase may occur, and when included in less than 1% by weight, a problem of deterioration of weather resistance may occur.
  • the resin composition according to one embodiment of the present invention may further include an adhesion promoter and an antifoaming agent as an additive to improve the adhesion, moisture resistance, chemical resistance, and cold cycle cycle resistance of the coating film. .
  • the curing agent for curing the acrylic polyol resin and the polyester polyol resin reacts with the hydroxyl groups contained in the resins at room temperature or forced curing (75 ⁇ 5 °C, 40 to 50 minutes) can be used.
  • one or more types can be selected and used among homopolymers or modified bodies of methylene diisocyanate, toluene diisocyanate and xylene diisocyanate which are excellent in curing rate, adhesion, coating hardness, heat resistance and the like.
  • the polyisocyanate is used, it is excellent in adhesion to various plastic molded articles, moisture resistance, coating hardness, and the like, and is relatively inexpensive in terms of economic efficiency.
  • the reaction ratio (NCO / OH) of the isocyanate functional group contained in the polyisocyanate curing agent and the hydroxyl group contained in the acrylic polyol resin and the polyester polyol resin may be 1.03 to 1.07. have.
  • the coating film properties such as hardness and water resistance may be lowered.
  • the coating film dryness may be lowered.
  • the curing agent may be diluted with a suitable solvent, stored in a separate container, and sufficiently stirred before use.
  • the dilution rate at the time of dilution of the curing agent may be determined by combining the hydroxyl composition in the resin and the isocyanate functional group in the curing agent when the resin composition and the diluted curing agent are mixed to calculate the urethane reaction in equivalent weight equivalents. .
  • the mixing ratio of the resin composition and the diluted curing agent may be 1: 0.9 to 1: 1.2 based on the equivalent ratio. When the mixing ratio is mixed in excess of the equivalent ratio of 1: 1.2, excess isocyanate functional groups may occur, and when mixed below the equivalent ratio of 1: 0.9, the degree of curing may be reduced.
  • Another embodiment of the present invention relates to an automotive part, in particular an automobile bumper, comprising a transparent coating layer formed using the two-part oil-soluble transparent coating composition described above.
  • the resin compositions of Examples and Comparative Examples were prepared according to the compositions of Table 1 below. Specifically, after putting the first acrylic polyol resin, the second acrylic polyol resin, the polyester polyol resin into the container and mixing at a low speed using a stirrer, the ultraviolet absorber, the surface conditioner A, the surface conditioner B, the curing accelerator, and the solvent It injected
  • a polyisocyanate curing agent (HDI Trimer) was then added to the mixture in a weight ratio of resin composition (topic): curing agent of 2.4: 1 to prepare a coating composition. The viscosity of the prepared coating composition was adjusted to 17-20 seconds (FORD CUP # 4) with dilution thinner.
  • 1st acrylic polyol resin 60-66 weight% of solid content, 80-100 mgKOH / g of hydroxyl number, Tg 20-40 (CRT01641, KCC company)
  • 2nd acrylic polyol resin 70-80 weight% of solid content, 120-160 mgKOH / g hydroxyl number, Tg 0-20 (SYNTHALAT-A TH 3227, STNTHOPOL company)
  • Polyester polyol resin 50 to 70% by weight solids, 120 to 180 mgKOH / g hydroxyl number (SETAL 81462 SS-55, NUPLEX)
  • Non-silicone surface adjuster B Non-silicone surface adjuster (BYK 358N, BYK)
  • Solvent Mixture of methyl isobutyl ketone, propylene glycol monomethyl ether acetate and butyl cellosolve acetate
  • UV absorber EVERSORB 83 (EVERLIGHT CHEMICAL)
  • DBTDL Dibutyl tin dilaurate
  • the coating workability, appearance and physical properties of the final coating film were measured as follows and evaluated according to the following evaluation criteria, and the results are shown in Table 2 below.
  • the degree of bubbles, foreign matters, spots, grooves and smoothness on the surface of the coating film was compared.
  • the degree of peeling of the coating film was compared by spraying high pressure water at a pressure of 70 kgf at a distance of 10 cm with a prescribed high-pressure car wash tester.
  • Example 1 Example 2
  • Example 3 Example 4 Comparative Example 1 Comparative Example 2 Paint workability ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ Exterior ⁇ ⁇ ⁇ ⁇ ⁇ Adhesion ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ Water resistance ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ High pressure car wash ⁇ ⁇ ⁇ ⁇ ⁇ Weather resistance ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • the coating film prepared using the transparent coating composition of Examples 1 to 4 according to the present invention has excellent coating workability and appearance, and durable properties such as adhesion, water resistance, high pressure car wash, and weather resistance.
  • the coating film prepared using the transparent coating composition of Comparative Examples 1 and 2 had excellent durability but poor coating workability or appearance.

Abstract

The present invention provides a two-liquid type, oil-soluble, transparent paint composition comprising: a resin composition including an acrylic polyol resin, a polyester polyol resin, and a solvent; and a curing agent, wherein the acrylic polyol resin includes a first acrylic polyol resin and a second acrylic polyol resin, the first acrylic polyol resin having a solids content of 60 to 66 wt%, a hydroxyl value of 80 to 100 mg KOH/g, and a glass transition temperature of 20 to 40, and the second acrylic polyol resin having a solids content of 70 to 80 wt%, a hydroxyl value of 120 to 160 mg KOH/g, and a glass transition temperature of 0 to 20. The two-liquid type, oil-soluble, transparent paint composition according to the present invention not only has excellent paintability, but can provide a coat of paint having excellent physical properties in terms of external appearance, adhesiveness, water resistance, compatibility with high-pressure car washing, weather resistance and the like.

Description

투명 도료 조성물Transparent Paint Composition
본 발명은 자동차 범퍼용 투명 도료 조성물에 관한 것으로, 보다 상세하게는 도막 살오름성과 외관이 우수하고 경도, 내수성 및 내후성 등의 도막물성이 우수한 유용성(oil-soluble) 투명 도료 조성물에 관한 것이다.The present invention relates to a transparent coating composition for automobile bumpers, and more particularly, to an oil-soluble transparent coating composition which is excellent in coating film properties and appearance, and has excellent coating properties such as hardness, water resistance and weather resistance.
근래 환경 보존 및 작업장의 환경 개선 측면에서 휘발성 유기 화합물 (volatile organic compound; VOC)에 대한 배출 규제 정책으로 인하여 자동차 도료에 대한 VOC 감축이 매우 중요한 사항이 되고 있다. 상기 자동차 도료에 있어서 VOC 감축을 위해서 강구되는 대책으로서는 수용성 도료 또는 유용성 하이솔리드 도료의 사용이 제안되고 있다.In recent years, the emission control policy on volatile organic compounds (VOCs) has become a very important issue for automotive paints in terms of environmental conservation and workplace improvement. As a countermeasure taken for VOC reduction in the said automobile paint, use of water-soluble paint or oil-soluble high solid paint is proposed.
이에 대한민국 등록특허 제10-0558086호는 저점도의 하이솔리드 아크릴 수지를 적용하여 건조가 빠르며 내산성 및 내스크래치성 등이 우수한 하이솔리드 투명 도료를 개시하고 있다.Accordingly, Korean Patent No. 10-0558086 discloses a high solid transparent paint having high dryness and excellent acid resistance and scratch resistance by applying a low viscosity high solid acrylic resin.
한편, 자동차 범퍼용 도료의 경우, 프라이머-베이스-투명 도료층으로 이루어지는 다층코팅으로 도장을 진행하는데, 이중 투명 도료층의 경우, 로봇 도장 라인에서 수용성 도료로 도장시 도막 살오름성이 저하되는 등 도장 작업성에 문제가 발생되어 유용성 투명 도료를 적용하고 있으며, 도막 살오름성과 외관을 높일 수 있는 유용성 하이솔리드 투명 도료의 개발이 요구되고 있다.On the other hand, in the case of paints for automobile bumpers, the coating proceeds with a multilayer coating consisting of a primer-base-transparent coating layer. In the case of the double transparent coating layer, the coating film dryness decreases when painting with a water-soluble coating in the robot coating line. Due to problems in painting workability, oil-soluble transparent coatings are being applied, and development of oil-soluble high-solids transparent coatings that can enhance the appearance and appearance of coatings is required.
본 발명은 도막 살오름성과 외관이 우수하고 우수한 경도, 내수성 및 내후성 등의 도막물성을 구현할 수 있는 2액형 유용성(oil-soluble) 투명 도료 조성물을 제공하는 것이다.The present invention is to provide a two-component oil-soluble transparent coating composition that can realize coating properties such as excellent hardness and water resistance and excellent hardness, water resistance and weather resistance.
또한 본 발명은 상기 2액형 유용성 투명 도료 조성물을 이용하여 형성된 투명 도료층을 포함하는 자동차 부품을 제공하는 것이다.In another aspect, the present invention is to provide an automotive part comprising a transparent paint layer formed using the two-component oil-soluble transparent paint composition.
본 발명은 아크릴 폴리올 수지, 폴리에스테르 폴리올 수지 및 용제를 포함하는 수지 조성물 및 경화제를 포함하는 2액형 유용성 투명 도료 조성물로서, 상기 아크릴 폴리올 수지는 고형분 60 내지 66 중량%, 하이드록실가 80 내지 100 mgKOH/g, 및 유리전이온도(Tg) 20 내지 40인 제1 아크릴 폴리올 수지와, 고형분 70 내지 80 중량%, 하이드록실가 120 내지 160 mgKOH/g, 및 유리전이온도(Tg) 0 내지 20인 제2 아크릴 폴리올 수지를 포함하는 2액형 유용성 투명 도료 조성물을 제공한다.The present invention is a two-component oil-soluble transparent coating composition comprising a resin composition comprising an acrylic polyol resin, a polyester polyol resin and a solvent and a curing agent, wherein the acrylic polyol resin has a solid content of 60 to 66 wt% and a hydroxyl value of 80 to 100 mgKOH / g, and a first acrylic polyol resin having a glass transition temperature (Tg) of 20 to 40, a solid content of 70 to 80 wt%, a hydroxyl value of 120 to 160 mgKOH / g, and a glass transition temperature (Tg) of 0 to 20 Provided is a two-part oil-soluble transparent coating composition containing a two acrylic polyol resin.
본 발명의 일 실시형태에서, 상기 제1 아크릴 폴리올 수지와 상기 제2 아크릴 폴리올 수지는 1:3 내지 1:7의 중량비로 포함될 수 있다.In one embodiment of the present invention, the first acrylic polyol resin and the second acrylic polyol resin may be included in a weight ratio of 1: 3 to 1: 7.
본 발명의 일 실시형태에서, 상기 아크릴 폴리올 수지는 총 수지 조성물에 대하여 40 내지 70 중량%로 포함될 수 있다.In one embodiment of the present invention, the acrylic polyol resin may be included in 40 to 70% by weight relative to the total resin composition.
본 발명의 일 실시형태에서, 상기 폴리에스테르 폴리올 수지는 고형분 50 내지 70 중량% 및 하이드록실가 120 내지 180 mgKOH/g인 폴리에스테르 폴리올 수지를 포함할 수 있다.In one embodiment of the present invention, the polyester polyol resin may include a polyester polyol resin having a solid content of 50 to 70% by weight and a hydroxyl value of 120 to 180 mgKOH / g.
본 발명의 일 실시형태에서, 상기 폴리에스테르 폴리올 수지는 총 수지 조성물에 대하여 10 내지 35 중량%로 포함될 수 있다.In one embodiment of the present invention, the polyester polyol resin may be included in 10 to 35% by weight relative to the total resin composition.
본 발명의 일 실시형태에서, 상기 수지 조성물은 첨가제를 추가로 포함할 수 있다.In one embodiment of the present invention, the resin composition may further include an additive.
본 발명의 일 실시형태에서, 상기 첨가제는 폴리실록산계 표면조정제 및 비실리콘계 표면조정제를 포함할 수 있다.In one embodiment of the present invention, the additive may include a polysiloxane-based surface modifier and a non-silicone-based surface modifier.
본 발명의 일 실시형태에서, 상기 용제는 에스테르계 용제 및 케톤계 용제를 포함할 수 있다.In one embodiment of the present invention, the solvent may include an ester solvent and a ketone solvent.
한편, 본 발명은 상기 2액형 유용성 투명 도료 조성물을 이용하여 형성된 투명 도료층을 포함하는 자동차 부품을 제공한다.On the other hand, the present invention provides an automotive part comprising a transparent paint layer formed using the two-component oil-soluble transparent paint composition.
본 발명에 따른 2액형 유용성 투명 도료 조성물은 도장 작업성이 우수할 뿐만 아니라, 외관, 부착성, 내수성, 고압세차성, 내후성 등의 물성이 우수한 도막을 제공할 수 있다.The two-part oil-soluble transparent coating composition according to the present invention can provide a coating film excellent in physical properties such as appearance, adhesion, water resistance, high-pressure car wash resistance, weather resistance, as well as excellent painting workability.
이하, 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
본 발명의 일 실시형태는 아크릴 폴리올 수지, 폴리에스테르 폴리올 수지 및 용제를 포함하는 수지 조성물(주제), 및 경화제를 포함하는 2액형 유용성 투명 도료 조성물로서, 상기 아크릴 폴리올 수지는 고형분 60 내지 66 중량%, 하이드록실가 80 내지 100 mgKOH/g, 및 유리전이온도(Tg) 20 내지 40인 제1 아크릴 폴리올 수지와, 고형분 70 내지 80 중량%, 하이드록실가 120 내지 160 mgKOH/g, 및 유리전이온도(Tg) 0 내지 20인 제2 아크릴 폴리올 수지를 포함하는 2액형 유용성 투명 도료 조성물에 관한 것이다.One embodiment of the present invention is a two-component oil-soluble transparent coating composition comprising an acrylic polyol resin, a polyester polyol resin and a solvent comprising a solvent and a curing agent, wherein the acrylic polyol resin has a solid content of 60 to 66% by weight. , First acrylic polyol resin having a hydroxyl value of 80 to 100 mgKOH / g, and a glass transition temperature (Tg) of 20 to 40, a solid content of 70 to 80 wt%, a hydroxyl value of 120 to 160 mgKOH / g, and a glass transition temperature (Tg) It is related with the 2-component oil-soluble transparent coating composition containing the 2nd acrylic polyol resin which is 0-20.
본 발명의 일 실시형태에 있어서, 상기 아크릴 폴리올 수지는 고형분이 60 내지 66 중량%(제1 아크릴 폴리올 수지 총 중량 기준)이고, 하이드록실가가 80 내지 100 mgKOH/g이고, 유리전이온도(Tg)가 20 내지 40인 제1 아크릴 폴리올 수지와, 고형분이 70 내지 80 중량%(제2 아크릴 폴리올 수지 총 중랑 기준)이고, 하이드록실가가 120 내지 160 mg KOH/g이고, 유리전이온도(Tg)가 0 내지 20인 제2 아크릴 폴리올 수지를 포함할 수 있다.In one embodiment of the present invention, the acrylic polyol resin has a solid content of 60 to 66% by weight (based on the total weight of the first acrylic polyol resin), a hydroxyl value of 80 to 100 mgKOH / g, and a glass transition temperature (Tg). ) Is 20 to 40 first acrylic polyol resin, the solid content is 70 to 80% by weight (based on the total weight of the second acrylic polyol resin), the hydroxyl value is 120 to 160 mg KOH / g, the glass transition temperature (Tg ) May include a second acrylic polyol resin having 0 to 20.
본 발명의 일 실시형태에 있어서, 상기 아크릴 폴리올 수지는 제1 아크릴 폴리올 수지와 제2 아크릴 폴리올 수지를 1:3 내지 1:7의 중량비로 포함할 수 있다.In one embodiment of the present invention, the acrylic polyol resin may include a first acrylic polyol resin and a second acrylic polyol resin in a weight ratio of 1: 3 to 1: 7.
상기 제1 아크릴 폴리올 수지와 상기 제2 아크릴 폴리올 수지의 중량비가 상기 범위를 벗어나면, 살오름성이 저하되어 도장 작업성이 저하되거나 우수한 외관 특성을 제공하기 어려울 수 있다.When the weight ratio of the first acrylic polyol resin and the second acrylic polyol resin is out of the above range, the salvage property may be lowered, so that painting workability may be degraded or it may be difficult to provide excellent appearance characteristics.
본 발명의 일 실시형태에 따른 아크릴 폴리올 수지는 2-하이드록시메틸 (메트)아크릴레이트, 2-하이드록시에틸(메트)아크릴레이트, 2-하이드록시프로필 (메트)아크릴레이트, 2-하이드록시부틸(메트)아크릴레이트, 1,3-부탄디올 디(메트)아크릴레이트, 1,4-부탄디올 디(메트)아크릴레이트, 에틸렌글리콜 디(메트)아크릴레이트, 1,6-헥산디올 디(메트)아크릴레이트와 같은 적어도 하나 이상의 하이드록실기를 갖는 아크릴 단량체 단독, 이들의 혼합물, 또는 이들의 중합물일 수 있다.Acrylic polyol resin according to an embodiment of the present invention is 2-hydroxymethyl (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) acrylate, 1,6-hexanediol di (meth) acrylic Acrylic monomers having at least one or more hydroxyl groups, such as rates, alone, mixtures thereof, or polymers thereof.
또한, 상기 아크릴 폴리올 수지는 상기 적어도 하나 이상의 하이드록실기를 갖는 아크릴 단량체와 스티렌, 메틸 (메트)아크릴레이트, 에틸 (메트)아크릴레이트, 부틸 (메트)아크릴레이트, 이소부틸 (메트)아크릴레이트 또는 이의 혼합물이 공중합된 것일 수 있다.In addition, the acrylic polyol resin is an acrylic monomer having at least one hydroxyl group and styrene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate or Mixtures thereof may be copolymerized.
본 발명의 일 실시형태에 따른 수지 조성물은 상기 아크릴 폴리올 수지를 총 수지 조성물에 대하여 40 내지 70 중량%로 포함할 수 있고, 구체적으로는 55 내지 65 중량%로 포함할 수 있다. 상기 아크릴 폴리올 수지가 40 중량% 미만으로 포함되면 도막의 살오름성이 저하될 수 있고, 70 중량%를 초과하여 포함되면 도막 외관 특성이 저하될 수 있다.The resin composition according to the exemplary embodiment of the present invention may include the acrylic polyol resin in an amount of 40 to 70 wt% with respect to the total resin composition, and specifically, may include 55 to 65 wt%. When the acrylic polyol resin is included in less than 40% by weight, the salvability of the coating film may be reduced, and when included in more than 70% by weight, the coating film appearance characteristics may be reduced.
본 발명의 일 실시형태에 있어서, 상기 폴리에스테르 폴리올 수지는 고형분이 50 내지 70 중량%(폴리에스테르 폴리올 수지 총 중량 기준)이고 하이드록실가가 120 내지 180 mgKOH/g인 폴리에스테르 폴리올 수지를 포함할 수 있다.In one embodiment of the present invention, the polyester polyol resin may include a polyester polyol resin having a solid content of 50 to 70% by weight (based on the total weight of the polyester polyol resin) and a hydroxyl value of 120 to 180 mgKOH / g. Can be.
상기 폴리에스테르 폴리올 수지는, 글리콜 단량체와 산기를 가진 단량체의 축합반응으로 생성되는 수지일 수 있다. 상기 글리콜 단량체의 예로는 네오펜틸글리콜, 트리메틸올프로판, 디에틸렌글리콜, 트리에틸렌글리콜, 1,6-헥산디올, 1,4-부탄디올, 1,4-사이클로헥산 아미탄올, 및 이들의 혼합물을 들 수 있다. 상기 산기를 가진 단량체의 예로는 테레프탈산, 말레산무수물, 푸마르산, 프탈산무수물, 이소프탈산, 테트라하이드로프탈산무수물, 아디프산 및 이들의 혼합물을 들 수 있다.The polyester polyol resin may be a resin produced by a condensation reaction of a glycol monomer and a monomer having an acid group. Examples of the glycol monomers include neopentyl glycol, trimethylolpropane, diethylene glycol, triethylene glycol, 1,6-hexanediol, 1,4-butanediol, 1,4-cyclohexane amethanol, and mixtures thereof. Can be. Examples of the monomer having an acid group include terephthalic acid, maleic anhydride, fumaric acid, phthalic anhydride, isophthalic acid, tetrahydrophthalic anhydride, adipic acid and mixtures thereof.
상기 폴리에스테르 폴리올 수지는 도막의 외관, 경화밀도, 부착성, 내습성, 내충격성 등을 양호하게 하기 위하여 사용되는 것이다.The polyester polyol resin is used to improve the appearance, curing density, adhesion, moisture resistance, impact resistance and the like of the coating film.
본 발명의 일 실시형태에 따른 수지 조성물은 상기 폴리에스테르 폴리올 수지를 총 수지 조성물에 대하여 10 내지 35 중량%로 포함할 수 있고, 구체적으로는 15 내지 25 중량%로 포함할 수 있다. 상기 폴리에스테르 폴리올 수지가 10 중량% 미만으로 포함되면, 도막의 외관이 저하될 수 있고, 35 중량%를 초과하여 포함되면 도막의 경도가 저하될 수 있다.The resin composition according to an embodiment of the present invention may include the polyester polyol resin in an amount of 10 to 35% by weight based on the total resin composition, and specifically, may include 15 to 25% by weight. When the polyester polyol resin is included in less than 10% by weight, the appearance of the coating film may be lowered, and when included in excess of 35% by weight, the hardness of the coating film may be lowered.
본 발명의 일 실시형태에 있어서, 상기 용제는 도막의 두께를 유지시켜주고 도장 작업성을 향상시키기 위해 사용되는 것이다. 상기 용제는 n-헵탄, 톨루엔, 자일렌, 석유계 화합물 및 n-헥산 등의 비극성 용제; 에틸 아세테이트, n-부틸 아세테이트, 이소부틸 아세테이트, 에틸렌글리콜 모노에틸 에테르 아세테이트, 프로필렌 글리콜 모노메틸 에테르 아세테이트, 이염기성 에스테르, 3-메톡시 부틸 아세테이트, 아밀 아세테이트, 부틸글리콜 아세테이트, 부틸 셀로솔브 아세테이트, 메틸에틸 케톤, 메틸 이소부틸 케톤, 아세톤, 디이소부틸 케톤, 이소포론 및 사이클로헥사논 등의 극성 용제; 및 상기 비극성 용제와 극성 용제의 혼합물 중 1종 이상을 수지의 특성이나 휘발 속도에 따라 적절히 선택하여 사용할 수 있다.In one embodiment of this invention, the said solvent is used to maintain the thickness of a coating film, and to improve coating workability. The solvent may be a nonpolar solvent such as n-heptane, toluene, xylene, petroleum compound, n-hexane; Ethyl acetate, n-butyl acetate, isobutyl acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate, dibasic esters, 3-methoxy butyl acetate, amyl acetate, butyl glycol acetate, butyl cellosolve acetate, methyl Polar solvents such as ethyl ketone, methyl isobutyl ketone, acetone, diisobutyl ketone, isophorone and cyclohexanone; And at least one of the mixture of the nonpolar solvent and the polar solvent can be appropriately selected and used in accordance with the properties of the resin and the volatilization rate.
구체적으로 상기 용제는 케톤계 용제와 에스테르계 용제를 포함할 수 있다.Specifically, the solvent may include a ketone solvent and an ester solvent.
본 발명의 일 실시형태에 따른 수지 조성물은 상기 용제를 총 수지 조성물에 대하여 10 내지 30 중량%로 포함할 수 있다. 상기 용제가 10 중량% 미만으로 포함되면, 용제의 사용으로 인한 효과를 얻기 어려울 수 있고, 30 중량%를 초과하여 포함되면 도막의 부착성 및 내구성이 저하될 수 있다.The resin composition according to one embodiment of the present invention may contain the solvent in an amount of 10 to 30% by weight based on the total resin composition. If the solvent is contained in less than 10% by weight, it may be difficult to obtain the effect due to the use of the solvent, when contained in more than 30% by weight may reduce the adhesion and durability of the coating film.
본 발명의 일 실시형태에 있어서, 상기 수지 조성물은 첨가제를 추가로 포함할 수 있다.In one embodiment of the present invention, the resin composition may further include an additive.
본 발명의 일 실시형태에 있어서, 상기 수지 조성물은 수지(아크릴 폴리올 수지 및 폴리에스테르 폴리올 수지)와 경화제의 반응을 촉진시켜 도막건조 및 경화시간을 단축하기 위해 경화촉진제(또는 경화촉매)를 첨가제로서 추가로 포함할 수 있다. 상기 경화촉진제로는 테트라메틸 부탄 디아민, 비시클로옥탄, 디부틸틴 디라우레이트, 트리에틸렌 디아민 및 이들의 혼합물 중에서 선택된 것을 사용할 수 있다.In one embodiment of the present invention, the resin composition is a curing accelerator (or curing catalyst) as an additive to promote the reaction of the resin (acrylic polyol resin and polyester polyol resin) and the curing agent to shorten the coating film drying and curing time It may further comprise. The curing accelerator may be selected from tetramethyl butane diamine, bicyclooctane, dibutyltin dilaurate, triethylene diamine and mixtures thereof.
상기 경화촉진제의 사용량에는 특별한 제한이 없으나, 총 수지 조성물에 대하여 0.01 내지 1.0 중량%로 포함될 수 있다. 상기 경화촉진제가 0.01 중량% 미만으로 포함되면, 건조성 및 도막 물성이 저하될 수 있고, 1.0 중량%를 초과하여 포함되면, 외관 저하 및 가사 시간이 단축될 수 있다.The amount of the curing accelerator is not particularly limited, but may be included in an amount of 0.01 to 1.0 wt% based on the total resin composition. When the curing accelerator is included in less than 0.01% by weight, the drying properties and the coating film properties may be lowered, and when included in excess of 1.0% by weight, the appearance degradation and pot life may be shortened.
본 발명의 일 실시형태에 있어서, 상기 수지 조성물은 도료 조성물의 표면 장력을 조절하기 위하여 표면조정제를 첨가제로서 추가로 포함할 수 있다. 상기 표면조정제로는 표면장력을 조절하기 위해 도료 조성물에 일반적으로 사용되는 첨가제를 사용할 수 있으며, 구체적으로는, 폴리실록산계 표면조정제 및/또는 비실리콘계 표면조정제를 사용할 수 있다.In one embodiment of the present invention, the resin composition may further include a surface adjuster as an additive to adjust the surface tension of the coating composition. As the surface modifier, an additive generally used in the coating composition to adjust the surface tension may be used. Specifically, a polysiloxane surface modifier and / or a non-silicone surface modifier may be used.
상기 표면조정제의 사용량에는 특별한 제한이 없으나, 총 수지 조성물에 대하여 0.1 내지 1.0 중량%로 포함될 수 있다. 상기 표면조정제가 0.1 중량% 미만으로 포함되면, 외관이 저하될 수 있고, 1.0 중량%를 초과하여 포함되면, 재도장 시 부착성이 저하될 수 있다.The amount of the surface modifier is not particularly limited, but may be included in an amount of 0.1 to 1.0 wt% based on the total resin composition. If the surface modifier is included in less than 0.1% by weight, the appearance may be lowered, and when included in excess of 1.0% by weight, adhesion may be lowered when repainting.
본 발명의 일 실시형태에 있어서, 상기 수지 조성물은 자외선 흡수제를 첨가제로서 추가로 포함할 수 있다. 상기 자외선 흡수제는 아크릴 폴리올 수지의 발색단보다 자외선(UV) 흡수 능력이 강해 아크릴 폴리올 수지의 라디칼의 발생을 억제시키며 아크릴 폴리올 수지의 변색, 부풀어 오름, 층간박리, 광택 손실 방지에 효과가 있다. 상기 자외선 흡수제로는 하이드록시페닐 벤조트리아졸을 사용할 수 있다.In one embodiment of the present invention, the resin composition may further include a ultraviolet absorber as an additive. The ultraviolet absorber is stronger than the chromophore of the acrylic polyol resin to inhibit the generation of radicals of the acrylic polyol resin and is effective in preventing discoloration, swelling, delamination, and loss of gloss of the acrylic polyol resin. As the ultraviolet absorber, hydroxyphenyl benzotriazole may be used.
상기 자외선 흡수제의 사용량에는 특별한 제한이 없으나, 총 수지 조성물에 대하여 1 내지 10 중량%로 포함될 수 있다. 상기 자외선 흡수지가 10 중량%를 초과하여 포함되면, 원가상승의 문제점이 발생할 수 있으며, 1 중량% 미만으로 포함되면, 내후성 저하의 문제가 발생할 수 있다.The amount of the ultraviolet absorbent is not particularly limited, but may be included in an amount of 1 to 10% by weight based on the total resin composition. If the ultraviolet absorbent paper is included in excess of 10% by weight, a problem of cost increase may occur, and when included in less than 1% by weight, a problem of deterioration of weather resistance may occur.
본 발명의 일 실시형태에 따른 수지 조성물은 상기한 성분들 이외에도, 도막의 부착성, 내습성, 내약품성, 및 냉열사이클성을 우수하게 하기 위해 부착증진제 및 소포제를 첨가제로서 추가로 포함할 수 있다.In addition to the above components, the resin composition according to one embodiment of the present invention may further include an adhesion promoter and an antifoaming agent as an additive to improve the adhesion, moisture resistance, chemical resistance, and cold cycle cycle resistance of the coating film. .
본 발명의 일 실시형태에 있어서, 상기 아크릴 폴리올 수지와 상기 폴리에스테르 폴리올 수지를 경화시키는 경화제로는 상기 수지들에 함유된 하이드록실기와 반응하여 상온경화 혹은 강제경화(75±5℃, 40 내지 50분)할 수 있는 폴리이소시아네이트를 사용할 수 있다.In one embodiment of the present invention, the curing agent for curing the acrylic polyol resin and the polyester polyol resin reacts with the hydroxyl groups contained in the resins at room temperature or forced curing (75 ± 5 ℃, 40 to 50 minutes) can be used.
구체적으로는, 경화속도, 부착성, 도막경도, 내열성 등이 우수하며 저가인 메틸렌 디이소시아네이트, 톨루엔 디이소시아네이트, 자일렌 디이소시아네이트의 단독중합체 또는 변성체 중에서 1종 이상을 선택하여 사용할 수 있다. 이러한 폴리이소시아네이트를 사용할 경우 각종 플라스틱 성형품에 대한 부착성, 내습성, 및 도막경도 등이 우수하며, 가격이 상대적으로 저렴하여 경제성 측면에서 장점이 있다.Specifically, one or more types can be selected and used among homopolymers or modified bodies of methylene diisocyanate, toluene diisocyanate and xylene diisocyanate which are excellent in curing rate, adhesion, coating hardness, heat resistance and the like. When the polyisocyanate is used, it is excellent in adhesion to various plastic molded articles, moisture resistance, coating hardness, and the like, and is relatively inexpensive in terms of economic efficiency.
본 발명의 일 실시형태에 있어서, 상기 폴리이소시아네이트 경화제에 함유된 이소시아네이트 관능기와, 상기 아크릴 폴리올 수지 및 상기 폴리에스테르 폴리올 수지에 함유된 하이드록실기의 반응 비율(NCO/OH)은 1.03 내지 1.07일 수 있다. 상기 반응 비율이 상기 범위보다 낮을 경우 경도, 내수성 등의 도막 물성이 저하될 수 있고, 상기 범위보다 높을 경우, 도막 건조성이 저하될 수 있다.In one embodiment of the present invention, the reaction ratio (NCO / OH) of the isocyanate functional group contained in the polyisocyanate curing agent and the hydroxyl group contained in the acrylic polyol resin and the polyester polyol resin may be 1.03 to 1.07. have. When the reaction ratio is lower than the above range, the coating film properties such as hardness and water resistance may be lowered. When the reaction ratio is higher than the above range, the coating film dryness may be lowered.
상기 경화제는 적당한 용제로 희석하여 별도용기에 보관한 후 사용 직전에 충분히 교반하여 사용할 수 있다. 상기 경화제의 희석 시 희석율은 수지 조성물과 희석된 경화제를 혼합하였을 때 수지들에 함유된 하이드록실기와 경화제에 함유된 이소시아네이트 관능기가 결합하여 우레탄 반응이 당량 대 당량으로 일어날 수 있도록 계산하여 결정할 수 있다. 구체적으로 수지 조성물과 희석된 경화제의 혼합 비율은 당량비 기준으로 1: 0.9 내지 1:1.2로 이루어질 수 있다. 상기 혼합 비율이 1:1.2의 당량비를 초과하여 혼합되면 잉여되는 이소시아네이트 관능기가 발생할 수 있고, 1:0.9의 당량비 미만으로 혼합되면경화도가 떨어질 수 있다.The curing agent may be diluted with a suitable solvent, stored in a separate container, and sufficiently stirred before use. The dilution rate at the time of dilution of the curing agent may be determined by combining the hydroxyl composition in the resin and the isocyanate functional group in the curing agent when the resin composition and the diluted curing agent are mixed to calculate the urethane reaction in equivalent weight equivalents. . Specifically, the mixing ratio of the resin composition and the diluted curing agent may be 1: 0.9 to 1: 1.2 based on the equivalent ratio. When the mixing ratio is mixed in excess of the equivalent ratio of 1: 1.2, excess isocyanate functional groups may occur, and when mixed below the equivalent ratio of 1: 0.9, the degree of curing may be reduced.
본 발명의 다른 일 실시형태는 상술한 2액형 유용성 투명 도료 조성물을 이용하여 형성된 투명 도료층을 포함하는 자동차 부품, 특히 자동차 범퍼에 관한 것이다.Another embodiment of the present invention relates to an automotive part, in particular an automobile bumper, comprising a transparent coating layer formed using the two-part oil-soluble transparent coating composition described above.
이하, 실시예, 비교예 및 실험예에 의해 본 발명을 보다 구체적으로 설명하고자 한다. 이들 실시예, 비교예 및 실험예는 본 발명을 설명하기 위한 것으로, 본 발명의 범위가 이들에 국한되지 않는다는 것은 당업자에게 있어서 자명하다.Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples and Experimental Examples. These Examples, Comparative Examples and Experimental Examples are for explaining the present invention, and it is obvious to those skilled in the art that the scope of the present invention is not limited thereto.
실시예Example 1 내지 4 및  1 to 4 and 비교예Comparative example 1 내지 2: 도료 조성물의 제조 1 to 2: Preparation of Paint Composition
하기 표 1의 조성에 따라 실시예 및 비교예의 수지 조성물을 제조하였다. 구체적으로, 제1 아크릴 폴리올 수지, 제2 아크릴 폴리올 수지, 폴리에스테르 폴리올 수지를 용기에 넣고 교반기를 사용하여 저속으로 혼합한 후, 자외선 흡수제, 표면조정제 A, 표면조정제 B, 경화촉진제, 및 용제를 투입하여 30분간 교반하고, 필요에 따라 용제를 추가로 사용하여 점도를 59 내지 65KU로 조절하였다. 그 후, 폴리이소시아네이트 경화제(HDI Trimer)를 2.4:1의 수지 조성물(주제):경화제의 중량비로 혼합물에 첨가하여 도료 조성물을 제조하였다. 제조된 도료 조성물의 점도를 희석 신너로 17-20초(FORD CUP＃4)로 조절하였다.The resin compositions of Examples and Comparative Examples were prepared according to the compositions of Table 1 below. Specifically, after putting the first acrylic polyol resin, the second acrylic polyol resin, the polyester polyol resin into the container and mixing at a low speed using a stirrer, the ultraviolet absorber, the surface conditioner A, the surface conditioner B, the curing accelerator, and the solvent It injected | thrown-in, stirred for 30 minutes, and adjusted the viscosity to 59-65 KU using the solvent further as needed. A polyisocyanate curing agent (HDI Trimer) was then added to the mixture in a weight ratio of resin composition (topic): curing agent of 2.4: 1 to prepare a coating composition. The viscosity of the prepared coating composition was adjusted to 17-20 seconds (FORD CUP # 4) with dilution thinner.
성분ingredient 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 비교예 1Comparative Example 1 비교예 2Comparative Example 2
제1 아크릴 폴리올 수지First acrylic polyol resin 1111 1313 1515 1010 5959 00
제2 아크릴 폴리올 수지2nd acrylic polyol resin 4848 4646 4545 5050 00 5959
폴리에스테르 폴리올 수지Polyester polyol resin 1919 1919 1818 1818 1919 1919
자외선 흡수제UV absorbers 22 22 22 22 22 22
표면조정제 ASurface conditioner A 0.70.7 0.70.7 0.70.7 0.70.7 0.70.7 0.70.7
표면조정제 BSurface conditioner B 0.20.2 0.20.2 0.20.2 0.20.2 0.20.2 0.20.2
경화촉진제Curing accelerator 0.10.1 0.10.1 0.10.1 0.10.1 0.10.1 0.10.1
용제solvent 1919 1919 1919 1919 1919 1919
합계Sum 100100 100100 100100 100100 100100 100100
제1 아크릴 폴리올 수지: 고형분 60 내지 66 중량%, 하이드록실가 80 내지 100 mgKOH/g, Tg 20 내지 40 (CRT01641, KCC사)1st acrylic polyol resin: 60-66 weight% of solid content, 80-100 mgKOH / g of hydroxyl number, Tg 20-40 (CRT01641, KCC company)
제2 아크릴 폴리올 수지: 고형분 70 내지 80 중량%, 하이드록실가 120 내지 160 mgKOH/g, Tg 0 내지 20 (SYNTHALAT-A TH 3227, STNTHOPOL사)2nd acrylic polyol resin: 70-80 weight% of solid content, 120-160 mgKOH / g hydroxyl number, Tg 0-20 (SYNTHALAT-A TH 3227, STNTHOPOL company)
폴리에스테르 폴리올 수지: 고형분 50 내지 70 중량%, 하이드록실가 120 내지 180 mgKOH/g (SETAL 81462 SS-55, NUPLEX사)Polyester polyol resin: 50 to 70% by weight solids, 120 to 180 mgKOH / g hydroxyl number (SETAL 81462 SS-55, NUPLEX)
표면조정제 A: 폴리실록산계 표면조정제(BYK 310, BYK사)Surface adjuster A: Polysiloxane-based surface adjuster (BYK 310, BYK)
표면조정제 B: 비실리콘계 표면조정제(BYK 358N, BYK사)Surface adjuster B: Non-silicone surface adjuster (BYK 358N, BYK)
용제: 메틸 이소부틸 케톤, 프로필렌 글리콜 모노메틸 에테르 아세테이트 및 부틸 셀로솔브 아세테이트의 혼합물Solvent: Mixture of methyl isobutyl ketone, propylene glycol monomethyl ether acetate and butyl cellosolve acetate
자외선 흡수제: EVERSORB 83(EVERLIGHT CHEMICAL사)UV absorber: EVERSORB 83 (EVERLIGHT CHEMICAL)
경화촉진제: 디부틸틴디라우레이트(DBTDL)(우창실업)Curing accelerator: Dibutyl tin dilaurate (DBTDL)
실험예Experimental Example : 도막의 외관 및 물성 평가: Evaluation of Appearance and Physical Properties of Coating Film
폴리프로필렌 범퍼 위에 수용성 프라이머(건조도막두께: 10-12마이크론)를 도장하여 40에서 4분 동안 건조 후, 수용성 베이스코트(건조도막두께: 10-18마이크론)를 도장하여 80에서 6분 동안 건조하여 상온에서 10분 동안 방치하였다. 그 위에 상기 실시예 및 비교예에서 제조된 도료 조성물(클리어코트)을 각각(건조도막두께: 28~38마이크론) 도장하여 80에서 30분 동안 핫 에어로 경화시켜 최종 도막을 형성하였다.Apply a water-soluble primer (dry film thickness: 10-12 microns) on the polypropylene bumper and dry it for 40 to 4 minutes, apply a water-soluble basecoat (dry film thickness: 10-18 microns) and dry it for 80 to 6 minutes. It was left at room temperature for 10 minutes. The coating compositions (clear coats) prepared in Examples and Comparative Examples were coated thereon (dry coating thickness: 28 to 38 microns) and cured with hot air at 80 to 30 minutes to form a final coating film.
도장 작업성, 최종 도막의 외관 및 물성을 다음과 같이 측정하고 하기의 평가 기준에 따라 평가하여 그 결과를 하기 표 2에 나타내었다.The coating workability, appearance and physical properties of the final coating film were measured as follows and evaluated according to the following evaluation criteria, and the results are shown in Table 2 below.
<평가 기준><Evaluation Criteria>
◎-우수◎ -excellent
○-양호○ -good
△-보통△-Normal
×-불량X-defect
1) 도장 작업성1) Painting workability
30×40cm 틴플레이트에 IWATA 61건(GUN)으로 왕복 2회 도장하여 도장 시 도료 조성물의 무화 정도, 평활성의 정도 및 도막 살오름성을 비교하였다.Two round trips of IWATA 61 guns (GUN) were applied to a 30 × 40 cm tin plate to compare the degree of atomization, the degree of smoothness, and the film swelling property of the coating composition.
2) 외관2) Appearance
도막 표면의 기포, 이물, 반점, 홈 및 평활성의 정도를 비교하였다.The degree of bubbles, foreign matters, spots, grooves and smoothness on the surface of the coating film was compared.
3) 부착성3) adhesion
ASTM D3359 테이프 부착성 시험 방법에 의거하여 1㎜×1㎜ 눈금 100개 중에서 테이프 부착성 시험 후 박리된 부분의 정도를 관찰하였다.Based on the ASTM D3359 tape adhesion test method, the degree of peeling after the tape adhesion test in 100 1 mm x 1 mm scales was observed.
4) 내수성4) water resistance
40 항온조에 완성된 도막을 10일 동안 침적 후 부착시험 및 외관평가를 진행하였다.After coating the finished coating film in 40 thermostat for 10 days, the adhesion test and appearance evaluation were carried out.
5) 고압 세차성5) High pressure car wash
규정된 고압세차 시험기로 10cm 거리에서 70kgf의 압력으로 고압의 물을 분사하여 도막의 박리 정도를 비교하였다.The degree of peeling of the coating film was compared by spraying high pressure water at a pressure of 70 kgf at a distance of 10 cm with a prescribed high-pressure car wash tester.
6) 내후성6) Weather resistance
제논 웨더로미터 시험기 환경에서 2500kJ의 에너지를 가한 후 도막 외관, 색차, 및 부착성을 비교하였다.After applying an energy of 2500 kJ in a Xenon Weatherometer tester environment, the coating appearance, color difference, and adhesion were compared.
항목Item 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 비교예 1Comparative Example 1 비교예 2Comparative Example 2
도장 작업성Painting workability ◎◎ ◎◎ ◎◎ ◎◎ △△ ○○
외관Exterior ◎◎ ◎◎ ◎◎ ◎◎ ○○ △△
부착성Adhesion ◎◎ ◎◎ ◎◎ ◎◎ ◎◎ ◎◎
내수성Water resistance ◎◎ ◎◎ ◎◎ ◎◎ ◎◎ ◎◎
고압세차성High pressure car wash ◎◎ ◎◎ ◎◎ ◎◎ ◎◎ ◎◎
내후성Weather resistance ◎◎ ◎◎ ◎◎ ◎◎ ◎◎ ◎◎
상기 표 2에 나타난 바와 같이, 본 발명에 따른 실시예 1 내지 4의 투명 도료 조성물을 이용하여 제조된 도막은 도장 작업성과 외관이 우수하고, 부착성, 내수성, 고압세차성 및 내후성 등의 내구 물성이 우수한 반면, 비교예 1 내지 2의 투명 도료 조성물을 이용하여 제조된 도막은 내구 물성은 우수하나 도장 작업성 또는 외관이 불량하였다.As shown in Table 2, the coating film prepared using the transparent coating composition of Examples 1 to 4 according to the present invention has excellent coating workability and appearance, and durable properties such as adhesion, water resistance, high pressure car wash, and weather resistance. On the other hand, the coating film prepared using the transparent coating composition of Comparative Examples 1 and 2 had excellent durability but poor coating workability or appearance.
이상으로 본 발명의 특정한 부분을 상세히 기술하였는 바, 본 발명이 속한 기술분야에서 통상의 지식을 가진 자라면 상기 내용을 바탕으로 본 발명의 범주 내에서 다양한 응용 및 변형을 행하는 것이 가능할 것이다.Having described the specific part of the present invention in detail, those skilled in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.
따라서, 본 발명의 실질적인 범위는 첨부된 청구범위와 그의 등가물에 의하여 정의된다고 할 것이다.Therefore, the substantial scope of the present invention will be defined by the appended claims and equivalents thereof.

Claims (9)

  1. 아크릴 폴리올 수지, 폴리에스테르 폴리올 수지 및 용제를 포함하는 수지 조성물; 및 경화제를 포함하는 2액형 유용성(oil-soluble) 투명 도료 조성물로서,Resin composition containing acrylic polyol resin, polyester polyol resin, and a solvent; And a two-part oil-soluble transparent coating composition comprising a curing agent,
    상기 아크릴 폴리올 수지는 고형분 60 내지 66 중량%, 하이드록실가 80 내지 100 mgKOH/g, 및 유리전이온도 20 내지 40인 제1 아크릴 폴리올 수지와, 고형분 70 내지 80 중량%, 하이드록실가 120 내지 160 mgKOH/g, 및 유리전이온도 0 내지 20인 제2 아크릴 폴리올 수지를 포함하는 2액형 유용성 투명 도료 조성물.The acrylic polyol resin has a solid content of 60 to 66% by weight, a hydroxyl value of 80 to 100 mgKOH / g, and a first acrylic polyol resin having a glass transition temperature of 20 to 40, a solid content of 70 to 80% by weight, and a hydroxyl value of 120 to 160. A two-component oil-soluble transparent coating composition comprising mgKOH / g and a second acrylic polyol resin having a glass transition temperature of 0 to 20.
  2. 제1항에 있어서,The method of claim 1,
    상기 제1 아크릴 폴리올 수지와 상기 제2 아크릴 폴리올 수지는 1:3 내지 1:7의 중량비로 포함되는 2액형 유용성 투명 도료 조성물.The first acrylic polyol resin and the second acrylic polyol resin is a two-component oil-soluble transparent coating composition is included in a weight ratio of 1: 3 to 1: 7.
  3. 제1항에 있어서,The method of claim 1,
    상기 아크릴 폴리올 수지는 총 수지 조성물에 대하여 40 내지 70 중량%로 포함되는 2액형 유용성 투명 도료 조성물.The acrylic polyol resin is a two-component oil-soluble transparent coating composition containing 40 to 70% by weight based on the total resin composition.
  4. 제1항에 있어서,The method of claim 1,
    상기 폴리에스테르 폴리올 수지는 고형분 50 내지 70 중량% 및 하이드록실가 120 내지 180 mgKOH/g인 폴리에스테르 폴리올 수지를 포함하는 2액형 유용성 투명 도료 조성물.The polyester polyol resin is a two-component oil-soluble transparent coating composition comprising a polyester polyol resin having a solid content of 50 to 70% by weight and a hydroxyl value of 120 to 180 mgKOH / g.
  5. 제1항에 있어서,The method of claim 1,
    상기 폴리에스테르 폴리올 수지는 총 수지 조성물에 대하여 10 내지 35 중량%로 포함되는 2액형 유용성 투명 도료 조성물.The polyester polyol resin is a two-component oil-soluble transparent coating composition containing 10 to 35% by weight relative to the total resin composition.
  6. 제1항에 있어서,The method of claim 1,
    상기 수지 조성물은 첨가제를 추가로 포함하는 2액형 유용성 투명 도료 조성물.The resin composition is a two-component oil-soluble transparent coating composition further comprises an additive.
  7. 제6항에 있어서,The method of claim 6,
    상기 첨가제는 경화촉진제, 표면조정제, 자외선흡수제, 부착증진제, 및 소포제로 이루어진 군에서 선택된 1종 이상을 포함하는 2액형 유용성 투명 도료 조성물.The additive is a two-component oil-soluble transparent coating composition comprising at least one selected from the group consisting of a curing accelerator, a surface conditioner, a UV absorber, an adhesion promoter, and an antifoaming agent.
  8. 제1항에 있어서,The method of claim 1,
    상기 용제는 에스테르계 용제 및 케톤계 용제를 포함하는 2액형 유용성 투명 도료 조성물.The solvent is a two-component oil-soluble transparent coating composition comprising an ester solvent and a ketone solvent.
  9. 제1항 내지 제8항 중 어느 한 항에 따른 2액형 유용성 투명 도료 조성물을 이용하여 형성된 투명 도료층을 포함하는 자동차 부품.An automotive part comprising a transparent paint layer formed using the two-part oil-soluble transparent paint composition according to any one of claims 1 to 8.
PCT/KR2017/004603 2016-05-18 2017-04-28 Transparent paint composition WO2017200228A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10028184B2 (en) 2014-04-28 2018-07-17 Intel IP Corporation User equipment and methods for measurement of reference signal received quality
CN115595047A (en) * 2022-10-17 2023-01-13 广东安捷伦新材料科技有限公司（Cn） Automobile coating and preparation method and application thereof
CN115851102A (en) * 2022-12-28 2023-03-28 雅图高新材料股份有限公司 ABS helmet multi-component flexible hand feeling varnish for electrostatic spraying and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102080936B1 (en) * 2018-01-24 2020-02-25 주식회사 케이씨씨 Clear paint composition
KR102567352B1 (en) * 2018-09-07 2023-08-16 주식회사 케이씨씨 Clear paint composition

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020056025A (en) * 2000-12-29 2002-07-10 정종순 Coating composition for automobile
US20080268286A1 (en) * 2006-09-27 2008-10-30 Tatsuya Ishihara Two package type clear coating composition and method for making multilayer coating film
KR20090019361A (en) * 2007-08-20 2009-02-25 주식회사 케이씨씨 A multi-layered coating, a thermosetting paint composition to form the same, and a plastic molded article having the multi-layered coating
KR20120126847A (en) * 2011-05-13 2012-11-21 현대자동차주식회사 Multilayered coating for dry plating, method of manufacturing thereof and plastic material comprising the same
JP2013209554A (en) * 2012-03-30 2013-10-10 Nippon Bee Chemical Co Ltd Coating material composition and method for forming multi-layer coated film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020056025A (en) * 2000-12-29 2002-07-10 정종순 Coating composition for automobile
US20080268286A1 (en) * 2006-09-27 2008-10-30 Tatsuya Ishihara Two package type clear coating composition and method for making multilayer coating film
KR20090019361A (en) * 2007-08-20 2009-02-25 주식회사 케이씨씨 A multi-layered coating, a thermosetting paint composition to form the same, and a plastic molded article having the multi-layered coating
KR20120126847A (en) * 2011-05-13 2012-11-21 현대자동차주식회사 Multilayered coating for dry plating, method of manufacturing thereof and plastic material comprising the same
JP2013209554A (en) * 2012-03-30 2013-10-10 Nippon Bee Chemical Co Ltd Coating material composition and method for forming multi-layer coated film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10028184B2 (en) 2014-04-28 2018-07-17 Intel IP Corporation User equipment and methods for measurement of reference signal received quality
CN115595047A (en) * 2022-10-17 2023-01-13 广东安捷伦新材料科技有限公司（Cn） Automobile coating and preparation method and application thereof
CN115851102A (en) * 2022-12-28 2023-03-28 雅图高新材料股份有限公司 ABS helmet multi-component flexible hand feeling varnish for electrostatic spraying and preparation method thereof

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