KR20000047276A - Water paint composition - Google Patents

Water paint composition Download PDF

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KR20000047276A
KR20000047276A KR1019980064069A KR19980064069A KR20000047276A KR 20000047276 A KR20000047276 A KR 20000047276A KR 1019980064069 A KR1019980064069 A KR 1019980064069A KR 19980064069 A KR19980064069 A KR 19980064069A KR 20000047276 A KR20000047276 A KR 20000047276A
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emulsion
weight
coating composition
coating
styrene
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KR1019980064069A
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Korean (ko)
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KR100583807B1 (en
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채윤수
엄명용
김상훈
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김충세
고려화학 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/022—Emulsions, e.g. oil in water
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)

Abstract

PURPOSE: A water paint composition is provided which is favorable in attaching various old coats and resistant to scratches and shows high hiding in painting on the various old coats. CONSTITUTION: In the water paint composition which is consisted of a binder of a plastic emulsion, chelate compounds, polydimethylsiloxane emulsion and paint, the binder contains 25-75 wt% of styrene-emulsion class plastic emulsion whose glass transition temperature is 20-60°C, the emulsion is consisted of two emulsion with different particle size wherein one is 50-130 nm and the other is 150-600 nm and the volume ratio is 1:4 and the solid content occupies 30-60 wt% of the total paints.

Description

수성도료 조성물Water-based paint composition

본 발명은 수성도료 조성물에 관한 것으로서, 더욱 상세하게는 유리전이온도가 비교적 높으면서 입자크기 범위가 서로 다른 스타이렌-아크릴계 합성수지 에멀젼 혼합물을 바인더로 함유하고 또한 티타네이트계 킬레이트 화합물 및 폴리디메틸실록산이 적정 함량비로 함유되어 있어 각종 구도막 및 소지와의 부착성, 내스크래치성이 양호하고, 실리카계 소광제를 사용하여 각종 수성 및 유성 구도막과 다공성 소지에 1회 도장시, 은폐 및 도막외관이 우수한 수성도료 조성물에 관한 것이다.The present invention relates to an aqueous coating composition, and more particularly, a styrene-acrylic synthetic resin emulsion mixture having a relatively high glass transition temperature and different particle size ranges as a binder, and titanate chelate compound and polydimethylsiloxane are suitable. It is contained in the content ratio, so it has good adhesion and scratch resistance with various old coating films and substrates, and has excellent concealment and coating appearance when applied to various aqueous and oil based coating films and porous substrates once using a silica-based matting agent. To a composition.

최근 휘발물질에 대한 환경규제가 심화되고 있는 상황에서, 합성수지 에멀젼 수지를 바인더로 하는 도료 조성물의 사용량이 한층 증가하고 있다. 이에 따라서, 상기 도료 조성물에 관한 각종의 고도의 기능적 요구가 강화되고 있다. 예를 들면, 합성수지 에멀젼을 바인더로 사용하는 건축용 도료 분야에서 각종 수성 및 유성 구도막에 보수도장을 하지만 유성 구도막에는 부착성이 불량한 결과를 초래했고, 또한 도장을 할때는 통상 2회 도장으로 마감을 하여 날로 상승하는 인건비는 공사시의 과중한 비용 부담으로 이어지는 상황이다. 따라서 이러한 문제점을 해결하고자 하는 고도의 기능적 도료개발이 요구되고 있다.In recent years, as environmental regulations for volatile substances are intensifying, the amount of the coating composition using a synthetic resin emulsion resin as a binder is increasing. Accordingly, various high functional demands on the coating composition have been strengthened. For example, in the field of construction paints using synthetic resin emulsions as binders, water-based coatings are applied to water-based and oil-based coatings, but they have poor adhesion to oil-based coatings. Rising labor costs lead to a heavy burden on construction. Therefore, it is required to develop a high functional paint to solve these problems.

일반적으로 합성수지 에멀젼을 바인더로 사용하는 도료에 있어서, 저온에서 도막형성을 양호하게 하기 위하여는 유리전이온도가 낮은 합성수지 에멀젼을 선택 사용하거나, 또는 가소제 또는 에멀젼 합체를 돕는 도막조제를 함유시키고 있다. 그러나 이러한 방법들의 경우는 도막의 점착성을 향상시켜 부착성을 향상시킬 것으로 예상되나 용제형 페인트와는 달리 열가소성 고분자 물질로 이루어져 있어 각종 구도막과의 부착성 및 내스크래치성이 불량한 결과를 나타낸다. 또한 일반 합성수지 에멀젼 및 안료를 사용한 수성도료는 다공성 소지에 1회 도장을 하였을 때는 소지에 대한 은폐 및 도막외관이 불량한 단점이 있다.In general, a coating material using a synthetic resin emulsion as a binder includes a synthetic resin emulsion having a low glass transition temperature, or containing a coating agent to help plasticizer or emulsion combination in order to improve the film formation at low temperature. However, these methods are expected to improve the adhesion of the coating film to improve the adhesion, but unlike the solvent-based paint is made of a thermoplastic polymer material has a poor adhesion and scratch resistance with a variety of old coating film. In addition, water-based paints using general synthetic resin emulsions and pigments have a disadvantage in that the concealment and appearance of the coating film is poor when coated on a porous substrate once.

이에, 합성수지 에멀젼을 바인더로 사용하는 도료가 가지는 부착성 및 내스크래치성의 문제점을 보완코져 일반 에멀젼에 반응성기를 도입하는 방법과 실란가교제를 첨가하는 방법[미국특허 제5,312,863호, 제4,248,754호, 제4,357,430호]이 공지되어 있다. 그러나, 이는 일반적으로 많이 쓰이는 스타이렌-아크릴계 합성수지와 같이 사용할 경우에 저장 안정성이 불량하게 나타난다. 또한, 유리전이가 각각 다른 에멀젼을 혼합하여 내스크래치성을 높이는 방법[미국특허 제5,731,377호]이 공지되어 있지만, 이러한 방법들은 유성 구도막 종류에 따라 부착성이 불안정하다. 또한, 국내에서 많이 사용하고 있는 다공성 소지인 슬레이트 및 몰타아르 소지에 1회 도장 하였을 때, 소지에 침투현상이 일어나 만족할 만한 은폐 및 도막외관을 얻기는 매우 힘들다.Therefore, the method of introducing a reactive group into a general emulsion and a method of adding a silane crosslinking agent to compensate for the problems of adhesion and scratch resistance of a paint using a synthetic resin emulsion as a binder [US Patent Nos. 5,312,863, 4,248,754, 4,357,430 Is known. However, when used with a commonly used styrene-acrylic synthetic resin, the storage stability is poor. In addition, a method of increasing scratch resistance by mixing emulsions having different glass transitions is known (US Pat. No. 5,731,377). However, these methods have unstable adhesion depending on the type of oily composition film. In addition, when the coating is once applied to the slate and the mortar of the porous substrates used in Korea, it is very difficult to obtain a satisfactory concealment and coating appearance due to the penetration phenomenon.

본 발명은 입자크가 분포가 서로 다른 스타이렌-아크릴계 합성수지 에멀젼 혼합물을 바인더로 사용하고 여기에 티타네이트계 킬레이트 화합물 및 폴리메틸실록산 에멀젼을 적정량 함유시켜 실란가교제를 도입하지 않고도 일반 합성수지 에멀젼 도료보다 부착성이 우수하고, 단단하고 치밀한 도막을 형성토록 하여 내스크래치성이 양호하며, 각종 구도막 및 다공성 소지에 도장하였을 때 은폐 및 도막외관이 우수하게 하여, 종래의 수성페인트보다 양호한 무광택의 외관을 갖도록 하는 수성도료 조성물을 제공하는 데 그 목적이 있다.The present invention uses a styrene-acrylic synthetic resin emulsion mixture having different particle size distribution as a binder, and contains titanate chelate compound and polymethylsiloxane emulsion in an appropriate amount, thereby adhering to a general synthetic resin paint without introducing a silane crosslinking agent. It has excellent scratch resistance and good scratch resistance by forming a hard and dense coating film, and when it is coated on various old coating films and porous substrates, it has excellent concealment and coating appearance, and has a better matte appearance than conventional water-based paints. The purpose is to provide an aqueous coating composition.

본 발명은 합성수지 에멀젼의 바인더, 킬레이트 화합물, 폴리디메틸실록산 에멀젼 및 안료가 함유되어 있는 수성도료 조성물에 있어서, 상기 바인더로는 유리전이온도가 20 ∼ 60℃인 스타이렌-아크릴계 합성수지 에멀젼 25 ∼ 75 중량%가 함유되고, 상기 에멀젼은 50 ∼ 130 ㎚, 150 ∼ 600 ㎚으로 서로 다른 입자크기를 가지는 에멀젼이 1 : 4 부피비로 혼합되어 있으며, 도료중의 고형분의 함량이 30 ∼ 60 중량%인 것을 그 특징으로 한다.The present invention relates to an aqueous coating composition containing a binder of a synthetic resin emulsion, a chelate compound, a polydimethylsiloxane emulsion, and a pigment, wherein the binder has a glass transition temperature of 20 to 60 ° C., and a styrene-acrylic synthetic resin emulsion of 25 to 75 weight. %, The emulsion is a mixture of 50 to 130 nm, 150 to 600 nm of emulsion having different particle sizes in a 1: 4 volume ratio, the solid content of the paint is 30 to 60% by weight of the It features.

이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.

본 발명에서는 유리전이가 높고 다공성 소지에 만족할 만한 도막외관 및 은폐를 얻기 위해 입자분포가 각각 다른 유리전이온도 20 ∼ 60℃의 스타이렌-아크릴계 에멀젼의 혼합물을 바인더로 사용하는 것에 그 특징이 있다.The present invention is characterized by using a mixture of a styrene-acrylic emulsion having a glass transition temperature of 20 ° C. to 60 ° C. with different particle distributions in order to obtain a coating appearance and concealment that is satisfactory in glass transition and satisfactory in porosity.

본 발명에서의 '스타이렌-아크릴계'라 함은 스타이렌 단량체와 아크릴산 유도체의 중합으로 생성된 수지계를 말한다. 일반적으로 수성페인트에 사용하는 합성수지 에멀젼으로는 스타이렌-아크릴계, 비닐계, 비닐-아크릴계, 아크릴계 등이 사용되고 있으며, 국내에서는 스타이렌-아크릴계를 주로 사용하고 있는 바, 스타이렌-아크릴계 에멀젼은 열가소성 고분자물질에서는 내후성, 내수성 등이 뛰어난 특성을 보유하고 있다.The term "styrene-acrylic-based" in the present invention refers to a resin produced by polymerization of a styrene monomer and an acrylic acid derivative. Generally, styrene-acrylic, vinyl, vinyl-acrylic, and acryl-based resins are used as synthetic resin emulsions used in water-based paints. In Korea, styrene-acrylic emulsions are mainly thermoplastic polymers. The material has excellent properties such as weather resistance and water resistance.

일반적으로 바인더로서 유리전이온도가 높고 입자크기가 큰 에멀젼만을 사용하게 되면 1회 도장시에 다공성 소지에 은폐 및 도막외관이 불량하여 바람직하지 않다. 그러나, 본 발명에서는 바인더로서 비교적 유리전이온도가 높고 제반 물성이 우수한 스타이렌-아크릴계 에멀젼을 사용하며, 또한 입자크기 분포를 달리하여 혼합 사용한다. 본 발명에 사용되는 합성수지 에멀젼은 입자크기 분포가 각각 50 ∼ 130 ㎚, 150 ∼ 600 ㎚으로 서로 다른 에말젼이 1 : 4 부피비로 혼합되어 있다. 만일 상기 입자크기 및 부피비를 벗어날때에는 다공성 소지에 도장하였을 경우, 은폐 및 도막외관이 불량하게 된다. 이러한 합성수지 에멀젼은 고형분의 함량이 30 ∼ 60 중량%인 것을 사용하는 것이 바람직하다. 바인더로서 함유되는 합성수지 에멀젼은 25 ∼ 75 중량%를 사용할 수 있으며, 조성물의 배합비중에 고형분비로 12 ∼ 38 중량%를 사용한다. 만일 상기 바인더의 함량이 25 중량% 미만일 경우에는 소지와의 부착성 및 은폐율이 저하되고, 반면에 75 중량%를 초과할 경우에는 저장 안정성 및 도막외관이 불량하게 되어 바람직하지 않다.In general, when only the emulsion having a high glass transition temperature and a large particle size is used as the binder, it is not preferable because the concealment and appearance of the coating film are poor on the porous substrate during one coating. However, in the present invention, a styrene-acrylic emulsion having a relatively high glass transition temperature and excellent physical properties is used as a binder, and mixed and used with different particle size distribution. The synthetic resin emulsions used in the present invention have a particle size distribution of 50 to 130 nm and 150 to 600 nm, respectively, and different emulsions are mixed in a 1: 4 volume ratio. If the particle size and volume ratio is out of the porous substrate, the concealment and appearance of the coating is poor. It is preferable to use such a synthetic resin emulsion having a solid content of 30 to 60% by weight. The synthetic resin emulsion contained as a binder may be used in the range of 25 to 75% by weight, and 12 to 38% by weight is used as the solid content in the blending ratio of the composition. If the content of the binder is less than 25% by weight, the adhesion to the substrate and the concealment rate is lowered. On the other hand, when the content of the binder exceeds 75% by weight, the storage stability and the appearance of the coating are poor, which is not preferable.

또한, 본 발명에서는 안료로 체질안료 5 ∼ 20 중량%, 백색안료 10 ∼ 30 중량% 및 실리카계 소광제 1 ∼ 6 중량%를 각각 단독으로 또는 서로 혼합하여 함유시킨다. 실리카계 소광제는 폴리에틸렌으로 표면처리가 되어있고, 입자크기가 미세하며, 높은 흡유량으로 인해 우수한 도막외관과 도료의 요변성을 줄 수 있는 유동특성 변형제로 사용되어, 다공성 소지에서 침투현상을 방지하고, 높은 은폐를 부여해 준다.In the present invention, 5 to 20% by weight of the extender pigment, 10 to 30% by weight of the white pigment, and 1 to 6% by weight of the silica matting agent are contained alone or in combination with each other. Silica-based matting agent is surface treated with polyethylene, has a fine particle size, and is used as a flow characteristic modifier to give excellent coating appearance and thixotropy due to high oil absorption, thus preventing penetration in porous substrates. It gives high concealment.

또한, 본 발명에서는 유기질계인 에멀젼과 무기질계인 안료(각종 체질안료 및 착색안료) 및 각종 구도막과 가교하여 부착성 및 내스크래치성을 양호하게 할 목적으로 티타네이트계 킬레이트 화합물, 폴리디메티실록산에멀젼 또는 이들을 함께 함유시킨다. 티타네이트계 킬레이트 화합물은 높은 유리전이온도의 에멀젼과 안료, 각종 소지 및 구도막과 가교하여 부착성을 증진시킬 목적으로 배합하며, 이는 도료 조성물중에 0.01 ∼ 3 중량% 함유토록 한다. 본 발명이 바인더로서 높은 유리전이의 에멀젼을 사용하지만, 폴리디메틸실록산에멀젼 등의 실리콘 에멀젼을 함유시킴에 따라 상온에서 도막형성 불량을 유도하지 않을 뿐만 아니라 저온에서 도막형성을 양호하게 한다. 또한 잔존 반응성기로 인해 에멀젼과 가교에 의한 결합력을 증대시켜 내스크래치성을 향상시킨다. 폴리디메틸실록산에멀젼 등의 실리콘 에멀젼은 도료 조성물중에 0.5 ∼ 10 중량% 함유시킨다. 만일 그 함유량이 0.5 중량% 미만일 경우, 내스크래치성이 불량하고, 반면에 10 중량%를 초과할 경우에는 저장 안정성이 불량해져서 바람직하지 않다.Further, in the present invention, a titanate chelate compound, a polydimethysiloxane emulsion, or the like for the purpose of improving adhesion and scratch resistance by crosslinking with organic emulsions, inorganic pigments (various sieving pigments and coloring pigments), and various composition films. It is contained together. The titanate-based chelate compound is blended with emulsions and pigments of various glass transition temperatures and various substrates and composition films for the purpose of promoting adhesion, which is to be contained in the coating composition in an amount of 0.01 to 3% by weight. Although the present invention uses an emulsion of high glass transition as a binder, it does not induce poor film formation at room temperature and improves film formation at low temperature by containing a silicone emulsion such as polydimethylsiloxane emulsion. In addition, due to the remaining reactive groups, the bonding strength by the emulsion and crosslinking is increased to improve scratch resistance. Silicone emulsions, such as a polydimethylsiloxane emulsion, are contained 0.5-10 weight% in a coating composition. If the content is less than 0.5% by weight, the scratch resistance is poor, whereas if the content is more than 10% by weight, the storage stability is poor, which is not preferable.

또한, 부착성의 보조효과를 부여하기 위해 마그네슘 실리케이트를 함유시킬 수도 있는 바, 마그네슘 실리케이트는 엷은 조각의 형태로써, 얇은 막이나 섬유질 형태로 이루어져 있어 부착성의 상승 효과를 부여할수 있다. 도료에서 일반적으로 사용되는 마그네슘 실리케이트는 얇은 막의 형태이며, 상업적 등급들은 소량의 칼슘이나 마그네슘 카보네이트를 포함하고 있다.In addition, magnesium silicate may be included in order to provide an auxiliary effect of adhesion. Magnesium silicate is in the form of a thin piece, and may be formed in a thin film or a fibrous form to give a synergistic effect of adhesion. Magnesium silicates commonly used in paints are in the form of thin films, and commercial grades contain small amounts of calcium or magnesium carbonate.

종래의 수성페인트에서는 칼슘 카보네이트, 알루미늄 실리케이트, 마그네슘 실리케이트, 바륨 설페이트, 실리콘다이옥사이드-실리케이트 등을 비롯한 다양한 종류의 체질안료를 여러가지 도막물성을 위하여 사용하여 왔다. 이들은 여러가지 형태의 모양, 다양한 거칠기의 표면조도, 대개 0.1 ∼ 50 ㎛ 범위의 직경을 가지고 있다. 이중 마그네슘 실리케이트는 엷은 조각의 형태로서, 얇은 막이나 섬유질 형태로 이루어져 있어 각종 유성 및 수성 구도막과의 부착성을 증진시키는데 사용된다. 또한, 일반적으로 사용에 제한되어 왔던 실리카계 소광제는 폴리에틸렌으로 표면처리가 되어있고, 입자크기가 미세하며, 높은 흡유량으로 인해 우수한 도막외관과 도료의 요변성을 줄 수 있는 유동특성 변형제로 사용되어, 다공성 소지에서 침투현상을 방지하고, 높은 은폐를 부여해 준다.In conventional aqueous paints, various types of extender pigments, including calcium carbonate, aluminum silicate, magnesium silicate, barium sulfate, silicon dioxide-silicate, and the like have been used for various coating properties. They have various shapes, surface roughnesses of various roughness, and usually have a diameter in the range of 0.1 to 50 µm. Magnesium silicate, in the form of a thin flake, consists of a thin film or a fibrous form, and is used to promote adhesion with various oily and aqueous composition films. In addition, silica-based quencher, which has been generally restricted in use, is surface treated with polyethylene, has a fine particle size, and is used as a flow characteristic modifier that can give excellent coating appearance and thixotropy due to high oil absorption. , It prevents penetration in porous material and gives high concealment.

또한, 본 발명의 도료 조성물에는 필요에 따라서 분산습윤제 0.05 ∼ 2 중량%, 동결방지제 1 ∼ 5 중량%, 소포제 0.1 ∼ 1 중량%, 레벨링제 0.1 ∼ 0.5 중량%, 방부제 0.1 ∼ 0.5 중량%, 증점제 0.1 ∼ 2 중량%, pH 조절제 0.1 ∼ 1 중량%, 도막조제 1 ∼ 8 중량% 등과 같은 보조제를 함유시킬 수도 있다.In addition, the coating composition of the present invention, if necessary, 0.05 to 2% by weight dispersion agent, 1 to 5% by weight antifreeze agent, 0.1 to 1% by weight defoaming agent, 0.1 to 0.5% by weight leveling agent, 0.1 to 0.5% by weight preservative, thickener An adjuvant such as 0.1 to 2% by weight, 0.1 to 1% by weight of pH adjuster, 1 to 8% by weight of a coating agent may be contained.

본 발명 도료 조성물의 대표적인 조성 예를 다음 표 1에 나타낸다.Representative composition examples of the coating composition of the present invention are shown in Table 1 below.

원료명Raw material name 배합량(중량%)Compounding amount (% by weight) 물water 1 ∼ 501 to 50 분산 및 습윤제Dispersing and wetting agents 0.05 ∼ 20.05 to 2 동결방지제Cryoprotectants 1 ∼ 51 to 5 백색안료White Pigment 10 ∼ 3010 to 30 소포제Antifoam 0.1 ∼ 10.1 to 1 도막조제Coating film preparation 1 ∼ 81 to 8 방부제antiseptic 0.1 ∼ 0.50.1 to 0.5 증점제Thickener 0.1 ∼ 20.1 to 2 체질안료Sieving pigment 5 ∼ 205 to 20 레벨링제Leveling agent 0.1 ∼ 0.50.1 to 0.5 소광제Matting agent 1 ∼ 61 to 6 pH 조절제pH regulator 0.1 ∼ 10.1 to 1 실리콘 에멀젼Silicone emulsion 0.5 ∼ 100.5 to 10 스타이렌-아크릴계 에멀젼(50∼130㎚)Styrene-acrylic emulsion (50-130 nm) 20 ∼ 6020 to 60 스타이렌-아크릴계 에멀젼(150∼600㎚)Styrene-acrylic emulsion (150-600 nm) 5 ∼ 155 to 15 합계Sum 100100

이상에서 설명한 바와 같은 조성으로 이루어진 본 발명의 수성도료 조성물을 사용하여 도막을 형성하는 경우에는, 각종 구도막 및 소지와의 부착성이 양호하고, 내스크래치성 및 도막외관이 우수하며 은폐가 뛰어나다.When the coating film is formed using the aqueous coating composition of the present invention having the composition as described above, the adhesion to various old coating films and substrates is good, the scratch resistance and the coating appearance are excellent, and the hiding is excellent.

이와 같은 본 발명을 다음의 실시예에 의거하여 더욱 상세히 설명하겠는 바, 본 발명이 이에 한정되는 것은 아니다.The present invention will be described in more detail based on the following examples, but the present invention is not limited thereto.

실시예Example

합성수지 에멀젼으로서는 고형분의 함량이 50 중량%인 스타이렌-아크릴계 에멀젼(고려화학 제품, CHW5213™) 25 중량%, 고형분의 함량이 46 중량%인 스타이렌-아크릴계 에멀젼(고려화학 제품, CHA00024™) 7 중량%, 분산 및 습윤제로서는 산노프코사의 Nopco 44-C™, 동결방지제는 에틸렌글리콜, 백색안료는 이산화티탄, 소포제는 비와이케이사의 BYK-024™, 레벨링제는 비와이케이사의 BYK-345™, 도막조제는 이스트만사의 Texanol™, 방부제는 도어사의 Acticide AS™, 증점제는 롬앤드하쓰사의 SCT270™, 체질안료는 일반적인 마그네슘실리케이트 및 알루미늄실리케이트, 소광제는 란코사의 Lanco-Matt MC™, pH 조절제로서는 공업용 암모니아수, 실리콘 에멀젼은 위트코사의 MAGNASOFT SL-501™, 킬레이트 화합물은 영산정밀의 YOUNGCHEL-1™을 사용하여 수성도료 조성물을 제조하였다.As a synthetic resin emulsion, a styrene-acrylic emulsion having a solid content of 50% by weight (25% by weight of CHW5213 ™) and a styrene-acrylic emulsion having a solid content of 46% by weight (Korea Chemicals, CHA00024 ™) 7 % By weight, Nopco 44-C ™ from Sanovco as a dispersing and wetting agent, ethylene glycol as antifreeze agent, titanium dioxide as a white pigment, BYK-024 ™ as a antifoam agent, BYK-345 ™ from BAY Kay Co., Ltd. Coating agents are Eastman's Texanol ™, preservatives are Acticide AS ™ from Door, thickeners are SCT270 ™ from Rohm and Harts, sieving pigments are common magnesium silicates and aluminum silicates, matting agents are Lanco-Matt MC ™ from Lanco, and pH adjusters Industrial ammonia water, silicone emulsion witco's MAGNASOFT SL-501 ™, chelating compound is Youngsan Precision YOUNGCHEL-1 ™ to prepare an aqueous coating composition.

구체적인 성분에 따른 조성을 다음 표 2에 나타낸다.The composition according to the specific component is shown in Table 2 below.

원료명Raw material name 배합량(중량%)Compounding amount (% by weight) 물water 15.915.9 분산 및 습윤제Dispersing and wetting agents 0.50.5 동결방지제Cryoprotectants 2.02.0 백색안료White Pigment 15.015.0 소포제Antifoam 0.20.2 도막조제Coating film preparation 5.05.0 방부제antiseptic 0.20.2 증점제Thickener 0.50.5 체질안료Sieving pigment 20.020.0 소광제Matting agent 4.04.0 pH 조절제pH regulator 0.20.2 폴리디메틸 실록산 에멀젼Polydimethyl siloxane emulsion 2.02.0 레벨링제Leveling agent 0.50.5 킬레이트 화합물Chelate compounds 2.02.0 KCC CHW5213KCC CHW5213 2525 KCC CHA00024KCC CHA00024 7.07.0 합계Sum 100.0100.0

비교예 1 및 비교예 2Comparative Example 1 and Comparative Example 2

KSM 5310-1급(비교예 1) 및 2급(비교예 2) 배합 규정에 따라서 수성도료 조성물을 제조하였다. 합성수지 에멀젼으로서는 고형분이 45 중량%인 스타이렌-아크릴계 에멀젼인 KCC의 H5250을 사용하고, 분산 및 습윤제로서는 산노프코사의 Nopco44-C™, 동결방지제로서는 에틸렌 글리콜, 소포제로서는 산노프코사의 Nopco-8034™, 도막조제는 이스트만 코닥사의 Texanol™, 증점제로서는 하이드록시에틸셀룰로오스, 방부제로서는 도어사의 Acticide AS™, pH 조절제로서는 공업용 암모니아수, 백색안료는 이산화티탄, 체질안료로서는 칼슘 카보네이트와 실리카를 사용하였다. 성분에 따른 구체적인 조성을 다음 표 4에 나타내었다.An aqueous coating composition was prepared according to the KSM 5310-1 class (Comparative Example 1) and Class 2 (Comparative Example 2) formulation rules. As a synthetic resin emulsion, H5250 of KCC, a styrene-acrylic emulsion having a solid content of 45% by weight, was used as a dispersing and wetting agent, Nopco44-C ™ from Sanofco, ethylene glycol as an antifreezing agent, and Nopco-8034 as a antifoaming agent. ™, Texanol ™ from Eastman Kodak, hydroxyethyl cellulose as a thickener, Acticide AS ™ from Doors as a preservative, industrial ammonia water as a pH adjuster, titanium dioxide as a white pigment, calcium carbonate and silica as a sieving pigment. Specific compositions according to the components are shown in Table 4 below.

원료명Raw material name 비교예 1(중량%)Comparative Example 1 (% by weight) 비교예 2(중량%)Comparative Example 2 (% by weight) 물water 13.313.3 26.326.3 분산 및 습윤제Dispersing and wetting agents 0.70.7 0.70.7 동결방지제Cryoprotectants 2.02.0 2.02.0 백색안료White Pigment 20.020.0 15.015.0 소포제Antifoam 0.20.2 0.20.2 도막조제Coating film preparation 2.02.0 2.02.0 방부제antiseptic 0.20.2 0.20.2 증점제Thickener 0.40.4 0.40.4 체질안료Sieving pigment 17.017.0 26.026.0 pH 조절제pH regulator 0.20.2 0.20.2 KCC H5250KCC H5250 4444 2727 합계Sum 100.0100.0 100.0100.0

시험예Test Example

상기 실시예 및 비교예 1 및 2에서 얻은 수성도료 조성물을 사용하여 도막을 형성하고, 형성된 도막의 물성을 다음과 같이 평가하였다. 그 결과는 다음 표 5에 나타내었다.The coating film was formed using the aqueous coating composition obtained by the said Example and Comparative Examples 1 and 2, and the physical property of the formed coating film was evaluated as follows. The results are shown in Table 5 below.

(1) 부착성 :(1) Adhesiveness:

유성도료 구도막(25℃에서 30일 건조)위에 부어 도장후 25℃에서 7일 건조, 2 ㎜ 크로스컷(Cross cut) 테이프 부착 시험을 실시하였다.Poured onto an oil paint composition film (dried for 30 days at 25 ℃), dried for 7 days at 25 ℃, and subjected to 2 mm cross cut tape adhesion test.

(2) 은폐 및 도막외관(촉감 및 슬립성)(2) Concealment and coating appearance (touch and slip)

크기가 30×90㎝인 슬레이트 소지 및 유성알키드가 도장된 소지에 1회 로울러 도장을 한 다음 25℃에서 7일 건조후 은폐(육안관찰) 및 도막외관(시촉감)을 관찰하였다.The rollers were coated once on 30-90 cm sized slates and oil-based alkyds, and then dried at 25 ° C. for 7 days to observe concealment (visual observation) and coating appearance (touch feeling).

(3) 내스크래치성(3) scratch resistance

유리판에 젖은 도막두께가 100 ㎛로 도장후 25℃에서 7일 건조, 연필경도(2H) 시험을 실시하였다.The coating film wet to a glass plate was 100 micrometers after coating, and it dried at 25 degreeC for 7 days, and the pencil hardness (2H) test was done.

구 분division 실시예Example 비교예1Comparative Example 1 비교예2Comparative Example 2 부착성Adhesion 유성 알키드Meteor alkyd ○○ ×× ×× 유성 우레탄Oil-based urethane ○○ ×× ×× NC 락카NC locker ○○ ○○ ○○ 은폐concealment 슬레이트slate ○○ ×× △△ 유성 알키드Meteor alkyd ○○ ×× △△ 도막외관Coating appearance 슬레이트slate ○○ △△ △△ 유성 알키드Meteor alkyd ○○ △△ △△ 내스크래치성Scratch resistance ○○ ×× ×× 평가기준 ○ : 우수, △ : 보통, X : 불량Evaluation criteria ○: Excellent, △: Normal, X: Poor

상기 표 5의 결과에서 알 수 있는 바와 같이, 본 발명에 따른 각종 구도막과의 부착성이 양호하고, 내스크래치성 우수하며, 다공성 및 구도막 소지에 높은 은폐 및 우수한 도막외관을 부여해 준다.As can be seen from the results of Table 5, the adhesion with various kinds of old film according to the present invention is good, excellent scratch resistance, and gives high concealment and excellent coating appearance to the porous and old film.

상기 시험결과에서 알 수 있는 바와 같이, 본발명에 따른 수성도료 조성물은 각종 구도막 및 소지와의 부착성이 양호하며, 내스크래치성이 우수하고, 다공성 소지 및 각종 구도막위에 도장시 높은 은폐와 우수한 도막외관을 부여하여 종래의 건축용 도료 조성물에 고품질의 기능성이 있는 도료 조성물로서 유성도료와의 품질도 비교될 수 있고, 종래의 수성도료에 비하여 도료 소요량이 매우 적은 건축용 도료조성물로 사용될 수 있다.As can be seen from the test results, the aqueous coating composition according to the present invention has good adhesion to various old coating films and substrates, has excellent scratch resistance, and high concealment and excellent coating films when painted on porous substrates and various old coating films. As a coating composition having a high-quality functionality to a conventional building paint composition by providing an appearance, it can also be compared with the quality of the oil paint, and can be used as a building paint composition with a very small paint requirement as compared to a conventional water-based paint.

Claims (5)

합성수지 에멀젼의 바인더, 킬레이트 화합물, 폴리디메틸실록산 에멀젼 및 안료가 함유되어 있는 수성도료 조성물에 있어서,In an aqueous coating composition containing a binder of a synthetic resin emulsion, a chelate compound, a polydimethylsiloxane emulsion and a pigment, 상기 바인더로는 유리전이온도가 20 ∼ 60℃인 스타이렌-아크릴계 합성수지 에멀젼 25 ∼ 75 중량%가 함유되고, 상기 에멀젼은 50 ∼ 130 ㎚, 150 ∼ 600 ㎚으로 서로 다른 입자크기를 가지는 에멀젼이 1 : 4 부피비로 혼합되어 있으며, 도료중의 고형분의 함량이 30 ∼ 60 중량%인 것을 특징으로 하는 수성도료 조성물.The binder contains 25 to 75% by weight of a styrene-acrylic synthetic resin emulsion having a glass transition temperature of 20 to 60 ° C., and the emulsion has 50 to 130 nm and 150 to 600 nm of emulsions having different particle sizes. : A water-based coating composition, characterized in that it is mixed in a 4 volume ratio, the content of solids in the paint is 30 to 60% by weight. 제 1 항에 있어서, 상기 스타이렌-아크릴계 합성수지 에멀젼은 스타이렌 단량체와 아크릴산 유도체를 중합하여 제조한 에멀젼이고, 고형분의 함량이 30 ∼ 60 중량%이고, 도료조성물중의 고형분의 함량이 12 ∼ 38 중량%인 것을 특징으로 하는 수성도료 조성물.The method of claim 1, wherein the styrene-acrylic synthetic resin emulsion is an emulsion prepared by polymerizing a styrene monomer and an acrylic acid derivative, the content of solids is 30 to 60% by weight, and the content of solids in the paint composition is 12 to 38. An aqueous coating composition, characterized in that weight%. 제 1 항에 있어서, 상기 안료로서는 체질안료 5 ∼ 20 중량%, 백색안료 10 ∼ 30 중량%, 실리카계 소광제 1 ∼ 6 중량%가 각각 단독으로 또는 혼합하여 함유되는 것을 특징으로 하는 수성도료 조성물.The aqueous coating composition according to claim 1, wherein the pigment contains 5 to 20% by weight of the extender pigment, 10 to 30% by weight of the white pigment, and 1 to 6% by weight of the silica matting agent, alone or in combination. . 제 1 항에 있어서, 상기 조성물에는 티타네이트계 킬레이트 화합물이 0.01 ∼ 3 중량% 함유되는 것을 특징으로 하는 수성도료 조성물.The aqueous coating composition according to claim 1, wherein the composition contains 0.01 to 3 wt% of a titanate chelate compound. 제 1 항에 있어서, 상기 조성물에는 실리콘 에멀젼이 0.5 ∼ 10 중량% 함유되는 것을 특징으로 하는 수성도료 조성물.The aqueous coating composition according to claim 1, wherein the composition contains 0.5 to 10% by weight of a silicone emulsion.
KR1019980064069A 1998-12-31 1998-12-31 Water-based paint composition KR100583807B1 (en)

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