KR20020053470A - Low gloss polyester type powder coating - Google Patents
Low gloss polyester type powder coating Download PDFInfo
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- KR20020053470A KR20020053470A KR1020000083114A KR20000083114A KR20020053470A KR 20020053470 A KR20020053470 A KR 20020053470A KR 1020000083114 A KR1020000083114 A KR 1020000083114A KR 20000083114 A KR20000083114 A KR 20000083114A KR 20020053470 A KR20020053470 A KR 20020053470A
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- powder coating
- coating composition
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- 239000000843 powder Substances 0.000 title claims description 45
- 238000000576 coating method Methods 0.000 title claims description 17
- 229920000728 polyester Polymers 0.000 title claims description 14
- 239000011248 coating agent Substances 0.000 title claims description 13
- 239000008199 coating composition Substances 0.000 claims description 32
- 229920001225 polyester resin Polymers 0.000 claims description 21
- 239000004645 polyester resin Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 230000002378 acidificating effect Effects 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000049 pigment Substances 0.000 claims description 5
- 239000004606 Fillers/Extenders Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000007580 dry-mixing Methods 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims 2
- 239000003973 paint Substances 0.000 description 33
- 238000002156 mixing Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1515—Three-membered rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
본 발명은 저광택 폴리에스테르계 분체 도료 조성물에 관한 것으로서, 더욱 상세하게는 경화속도가 빠른 1종의 속경화 분체도료 조성물과 경화속도가 늦은 1종의 지경화 분체도료 조성물로 이루어진 내후성이 우수한 폴리에스테르 수지 조성물 중에 경화제로서 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제를 사용하여 2종 이상의 폴리에스테르 수지를 드라이 블랜딩함으로써, 고온(200 ℃)에서 경화시 속경화 도료와 지경화 도료의 경화속도 차이에 의해 표면에 미세한 요철을 형성하여 외관이 우수하면서 레벨링, 내후성, 기계적 물성 및 내구성이 우수하고, 특히 5 ∼ 15%(60도 광택기 기준)의 저광택을 나타내어 천정재 및 건물의 내장재로 적용이 가능한 저광택 폴리에스테르계 분체 도료 조성물에 관한 것이다.The present invention relates to a low gloss polyester powder coating composition, and more particularly, to a polyester having excellent weather resistance composed of one fast curing powder coating composition having a high curing speed and one slow curing powder coating composition having a low curing speed. Dry blending two or more polyester resins using a triglycidyl isocyanurate or a dilycidyl moditic acrylic curing agent as a curing agent in the resin composition, so that the curing of the fast curing paint and the Fine unevenness is formed on the surface due to the difference in curing speed, and the appearance is excellent, and the leveling, weather resistance, mechanical properties and durability are excellent. In particular, it exhibits a low gloss of 5 to 15% (based on a 60-degree gloss machine), and thus is used as a ceiling material and a building material. It is related with the low gloss polyester powder coating composition which can be applied.
Description
본 발명은 저광택 폴리에스테르계 분체 도료 조성물에 관한 것으로서, 더욱 상세하게는 경화속도가 빠른 1종의 속경화 분체도료 조성물과 경화속도가 늦은 1종의 지경화 분체도료 조성물로 이루어진 내후성이 우수한 폴리에스테르 수지 조성물 중에 경화제로서 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제를 사용하여 2종 이상의 폴리에스테르 수지를 드라이 블랜딩함으로써, 고온(200 ℃)에서 경화시 속경화 도료와 지경화 도료의 경화속도 차이에 의해 표면에 미세한 요철을 형성하여 외관이 우수하면서 레벨링, 내후성, 기계적 물성 및 내구성이 우수하고, 특히 5 ∼ 15%(60도 광택기 기준)의 저광택을 나타내어 천정재 및 건물의 내장재로 적용이 가능한 저광택 폴리에스테르계 분체도료 조성물에 관한 것이다.The present invention relates to a low gloss polyester powder coating composition, and more particularly, to a polyester having excellent weather resistance composed of one fast curing powder coating composition having a high curing speed and one slow curing powder coating composition having a low curing speed. Dry blending two or more polyester resins using a triglycidyl isocyanurate or a dilycidyl moditic acrylic curing agent as a curing agent in the resin composition, so that the curing of the fast curing paint and the Fine unevenness is formed on the surface due to the difference in curing speed, and the appearance is excellent, and the leveling, weather resistance, mechanical properties and durability are excellent. In particular, it exhibits a low gloss of 5 to 15% (based on a 60-degree gloss machine), and thus is used as a ceiling material and a building material. It is related with the low gloss polyester powder coating composition which can be applied.
분체도료 중 저광택 도료의 제조기술은 광택 수준에 따라 몇 가지의 제조기술이 소개되어 있다.The manufacturing techniques of low gloss paints in powder coatings have introduced several manufacturing techniques depending on the gloss level.
첫 번째로 소광제로 왁스 또는 입도가 큰 체질안료를 투입하여 제조된 저광택 분체도료가 소개된 바 있으나, 광택의 소광 효과에 있어서 30 ∼ 40% 이하의 저광택 도료를 제조하기에는 불가능하였다.First, a low gloss powder coating prepared by adding wax or a sieving pigment having a large particle size was introduced as a matting agent, but it was impossible to prepare a low gloss paint of 30 to 40% or less in the matting effect of gloss.
또한, 두 번째로 반응성 차이가 큰 2종의 염기성 폴리에스테르 수지를 용융 블랜딩하고 경화제로 이소프론 디이소시아네이트를 적용하여 저광택 도료를 제조하는 방법이 널리 적용되고 있으며, 저광택 도료 제조를 위하여 사용된 하이드록시 벨류 200 ∼ 300의 폴리에스테르 수지를 10 ∼ 20 중량%로 사용하여 저광택 도료를 얻을 수 있었다. 그러나, 경화제로 사용된 이소프론 디이소시아네이트가 고온 경화시에 발생되는 카프로 락탐 가스 발생, 스크레치성 불량, 도료의 저장 안정성 저하의 문제점을 발생시 켜 바람직하지 못하다.In addition, a method of manufacturing a low gloss paint by melt blending two basic polyester resins having a high reactivity difference and applying isopron diisocyanate as a curing agent has been widely applied. A low gloss paint could be obtained using 10-20 weight% of polyester resins of the value 200-300. However, isoprone diisocyanate used as a curing agent is undesirable because it causes problems of caprolactam gas generation, poor scratchability, and deterioration in storage stability of paints generated at high temperature curing.
세 번째로 미국 특허 제 5,687,067 호에서 소개된 무광도료 제조기술에 의하면, 2 종의 산성 폴리에스테르 수지를 이용한 분체도료 제조후 드라이 블렌딩하여 저광택 도료를 제조한 바 있으나, 20% 이하 광택의 도료 제조에는 어려움이 있었으며, 레벨링의 저하 및 2 종의 도료 혼합에 따른 외관의 스파클 현상이 발생되는 문제가 있다.Thirdly, according to the matting paint manufacturing technology introduced in US Patent No. 5,687,067, low-gloss paints were prepared by dry blending after preparing powder coatings using two kinds of acidic polyester resins. There was a difficulty, and there was a problem in that the appearance of sparkling phenomenon due to the reduction in leveling and mixing of two paints.
네 번째로 대한민국 특허등록 제 232,422 호 등에 의하면, 산성 폴리에스테르 수지에 글리시딜기 함유 아크릴수지를 경화제로 사용하여 저광택 (10% 이하)분체 도료 조성물을 얻었다. 그러나, 경화제로 사용한 글리시딜기 함유 아크릴 수지의 당량이 600 ∼ 800이며 사용량이 많은 관계로 (15 ∼ 25 중량부) 도막의 기계적 강도가 저하되어 사용상에 어려움이 있다.Fourth, according to Korean Patent Registration No. 232,422, a low gloss (10% or less) powder coating composition was obtained by using a glycidyl group-containing acrylic resin as a curing agent in an acidic polyester resin. However, since the equivalent amount of the glycidyl group-containing acrylic resin used as the curing agent is 600 to 800 and the amount of use is large (15 to 25 parts by weight), the mechanical strength of the coating film is lowered, which causes difficulty in use.
따라서, 본 발명은 종래 분체도료의 문제점을 개선하기 위하여 연구 노력하였고, 그 결과 경화속도가 빠른 1종의 속경화 분체도료 조성물과 경화속도가 늦은 1종의 지경화 분체도료 조성물로 이루어진 내후성이 우수한 폴리에스테르 수지 조성물 중에 경화제로서 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제를 사용하여 2종 이상의 폴리에스테르 수지를 드라이 블랜딩함으로써, 고온(200 ℃)에서 경화시 속경화 도료와 지경화 도료의 경화속도 차이에 의해 표면에 미세한 요철을 형성하여 외관이 우수하면서 레벨링, 내후성, 기계적 물성 및 내구성이 우수하고, 특히 5 ∼ 15%(60도 광택기 기준)의 저광택을 나타내어 천정재 및 건물의 내장재로 적용이 가능한 폴리에스테르계 저광택 분체도료 조성물을 제공하는데 그 목적이 있다.Therefore, the present invention has been researched to improve the problems of the conventional powder coating, and as a result excellent weather resistance consisting of one fast curing powder coating composition with a fast curing rate and one slow curing powder coating composition with a slow curing speed Dry blending two or more polyester resins using a triglycidyl isocyanurate or a dilycidyl moditic acrylic curing agent as a curing agent in the polyester resin composition, thereby curing the fast-curing paint and local curing at high temperature (200 ° C.). Fine irregularities are formed on the surface due to the difference in the curing speed of the paint, and the appearance is excellent, and the leveling, weather resistance, mechanical properties and durability are excellent. In particular, it exhibits a low gloss of 5 to 15% (based on 60 degree polisher). To provide a polyester-based low gloss powder coating composition that can be applied as interior materials All.
본 발명은 폴리에스테르계 분체도료 조성물에 있어서, 속경화 분체도료 조성물과 지경화 분체도료 조성물을 건식 혼합하여 제조되며, 분체도료의 광택이 5 ∼ 15 % 인 저광택 폴리에스테르계 분체도료 조성물을 그 특징으로 한다.The present invention provides a polyester powder coating composition, which is prepared by dry mixing a fast curing powder coating composition and a hardening powder coating composition, and has a low gloss polyester powder coating composition having a gloss of 5 to 15% of the powder coating. It is done.
이와 같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.
선행 기술에서도 언급하였듯이 미국특허 제5,684,067호에서는 소광제와 경화제로 트리글리시딜 이소시아누레이트를 사용하였으며, 산성 폴리에스테르 수지 또한 1종은 산값이 30인 폴리에스테르 수지와 나머지 1종은 산값이 50인 폴리에스테르 수지를 사용하여 속경화 도료와 지경화 도료를 제조 후 동일 비율인 50/50 중량비로 드라이 블랜딩한 도료로 광택이 약 20 ∼ 30%인 저광택 분체 도료 조성물을 얻었다.As mentioned in the prior art, US Pat. No. 5,684,067 used triglycidyl isocyanurate as a quencher and a hardener, and an acidic polyester resin was also one of the polyester resins having an acid value of 30 and the other one having an acid value of 50. A low-gloss powder coating composition having a gloss of about 20 to 30% was obtained from a paint blended with a 50/50 weight ratio, which was the same ratio, after the fast-curing paint and the hard-curing paint were prepared using a phosphorus polyester resin.
이러한 점에 착안하여 본 발명에서는 보다 낮은 광택(5 ∼ 15%)의 분체도료 조성물을 얻기 위해, 2종의 산성 폴리에스테르 수지를 사용하여 제조된 2종의 속경화 및 지경화 분체도료를 50/50의 중량비로 혼합하여 도료로 사용시 광택이 5 ∼ 15 %이고, 레벨링이 우수하며, 스파클 현상이 없을 뿐만 아니라 기계적 강도가 우수한 분체도료 조성물을 제공하고자 한다.In view of this, in order to obtain a lower gloss (5 to 15%) powder coating composition, two fast curing and late curing powder coatings prepared by using two acid polyester resins are used. When used as a paint by mixing at a weight ratio of 50, the gloss is 5 to 15%, the leveling is excellent, and there is no sparking phenomenon as well as to provide a powder coating composition excellent in mechanical strength.
본 발명의 저광택 분체도료 조성물을 그 성분과 제조방법에 의거하여 보다 상세히 설명하면 다음과 같다.The low gloss powder coating composition of the present invention will be described in more detail based on its components and preparation method as follows.
본 발명에 따른 지경화 도료는 산성 폴리에스테르 수지와 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제를 사용하여 얻을 수 있다. 특히, 상기 산성 폴리에스테르 수지는 도료내에 경화 촉매를 사용하지 않은 산값이 20 ∼ 50이며, 점도가(200 ℃ 콘 & 플레이트에서 측정) 20 ∼ 36 포이즈인 수지를 사용하므로 보다 좋은 지경화 도료를 얻을 수 있다.The hardened paint according to the present invention can be obtained by using an acidic polyester resin and triglycidyl isocyanurate or a diglycidyl moditic acrylic curing agent. In particular, the acidic polyester resin has a acid value of 20 to 50 without using a curing catalyst in the paint and a resin having a viscosity of 20 to 36 poise (measured at 200 ° C. cone & plate), so that a better localized paint can be obtained. Can be.
즉, 전체 조성물 100 중량부에 대하여 산성 폴리에스테르 수지 60 ∼ 80 중량부; 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제 3 ∼ 6 중량부; 티타늄 디옥사이드 20 ∼ 30 중량부; 체질안료 5 ∼ 10 중량부; 및 기타 첨가제 (흐름성 향상제, 핀홀 방지제, 산화방지제, 자외선 흡수제 등) 0.1 ∼5 중량부로 이루어진 성분들을 배합하고 프리 믹싱 탱크에서 고속으로 프리 믹싱 한다. 그런 다음, 상기 프리믹싱한 도료를 분산기(니이더, 익스트루더)를 이용하여 90 ∼ 130 ℃에서 용융 분산기를 통과후 프레스 롤러와 쿨링 벨트을 거쳐서 적정 두께의 칩으로 제조한다. 상기의 제조된 칩은 고속 믹서 또는 기계식 분쇄기를 이용하여 평균 입도가 30 ∼ 50 마이크론인 분체도료 조성물을 얻을 수 있다. 이때, 도료의 겔화 시간은 200℃ 핫 플레이트에서 측정시 600 초에서 900 초 사이의 물성을 갖는다.That is, 60-80 weight part of acidic polyester resins with respect to 100 weight part of total compositions; 3 to 6 parts by weight of triglycidyl isocyanurate or diglycidyl modifier acrylic curing agent; 20 to 30 parts by weight of titanium dioxide; Extender pigments 5 to 10 parts by weight; And 0.1 to 5 parts by weight of other additives (flow improver, pinhole inhibitor, antioxidant, ultraviolet absorber, etc.) and mix them in a premixing tank at high speed. Then, the premixed paint is manufactured into chips of a suitable thickness through a press roller and a cooling belt after passing through the melt disperser at 90 to 130 ° C. using a disperser (kneader, extruder). The prepared chip can be obtained a powder coating composition having an average particle size of 30 to 50 microns using a high speed mixer or a mechanical grinder. At this time, the gelling time of the paint has a physical property of 600 seconds to 900 seconds when measured on a 200 ℃ hot plate.
또한, 본 발명의 속경화 도료는 상기 지경화 제조시 사용된 산값이 20 ∼ 50인 산성 폴리에스테르 수지와 글리시딜기 함유 아크릴 수지를 사용하여 얻을 수 있다. 이때, 상기 글리시딜기 함유 아크릴 수지는 당량이 250 ∼ 500인 것을 사용하며, 바람직하게는 당량이 280 ∼ 320인 것이 기계적 물성이 우수한 속경화 도료를 얻을 수 있다. 이 때, 글리시딜기 함유 아크릴 수지의 당량이 550 이상인 아크릴 경화제을 사용시에는 기계적 물성(충격성, 굴곡성, 절단 가공성)이 저하된다. 본 발명에서 글리시딜기 함유 아크릴 수지를 사용한 도료는 외관이 부드러우며, 소프트한 질감을 얻을 수 있다.In addition, the fast-hardening paint of this invention can be obtained using the acidic polyester resin and glycidyl-group containing acrylic resin whose acid value is 20-50 used at the time of the said hardening manufacture. At this time, the glycidyl group-containing acrylic resin is equivalent to 250 to 500, preferably 280 to 320 equivalent can be obtained a fast curing paint excellent in mechanical properties. At this time, when an acrylic curing agent having an equivalent of glycidyl group-containing acrylic resin of 550 or more is used, mechanical properties (impact, flexibility, cutting workability) are lowered. In the present invention, the coating material using a glycidyl group-containing acrylic resin is soft in appearance, and soft texture can be obtained.
상기 속경화 도료는 산성 폴리에스테르 수지 60 ∼ 80 중량부; 트리글리시딜 이소시아누레이트 또는 디리시딜 모디파이트 아크릴 경화제 0.1 ∼ 4 중량부; 글리시딜기 함유 아크릴 경화제 2 ∼ 10 중량부; 티타늄 디옥사이드 20 ∼ 30 중량부; 체질안료 5 ∼ 10 중량부; 및 기타 첨가제(흐름성 향상제, 핀홀방지제, 산화방지제, 자외선 흡수제 등) 0.1 ∼ 5 중량부로 배합하고 프리 믹싱 탱크에서 고속으로프리 믹싱 한다. 프리믹싱한 도료를 분산기(니이더,익스트루더)를 이용하여 90 ∼ 130 ℃에서 용융 분산기를 통과후 프레스 롤러와 쿨링 벨트을 거쳐서 적정 두께의 칩으로 제조한다. 상기의 제조된 칩은 고속 믹서 또는 기계식 분쇄기를 이용하여 평균 입도가 30 ∼ 50 마이크론인 분체도료 조성물을 얻을 수 있다. 이때, 도료의 겔화 시간은 200℃ 핫 플레이트에서 측정시 30 초에서 60 초 사이 물성을 갖는다.The rapid curing paint is 60 to 80 parts by weight of an acidic polyester resin; 0.1 to 4 parts by weight of triglycidyl isocyanurate or diglycidyl moditic acrylic curing agent; 2-10 weight part of glycidyl-group containing acrylic curing agents; 20 to 30 parts by weight of titanium dioxide; Extender pigments 5 to 10 parts by weight; And other additives (flow improver, pinhole inhibitor, antioxidant, ultraviolet absorber, etc.) at 0.1 to 5 parts by weight and premix at high speed in a premixing tank. The premixed paint is manufactured into chips of a suitable thickness through a press roller and a cooling belt after passing through a melt disperser at 90 to 130 ° C. using a disperser (kneader, extruder). The prepared chip can be obtained a powder coating composition having an average particle size of 30 to 50 microns using a high speed mixer or a mechanical grinder. At this time, the gelation time of the paint has a physical property between 30 seconds and 60 seconds when measured on a 200 ℃ hot plate.
그리고, 상기와 같이 제조된 속경화 및 지경화 도료는 540 ∼ 870 초의 경화속도의 차이를 갖는 것이 바람직하다. 이때 경화속도의 차이가 540초 미만이면 5 ∼ 15 %의 저광택 도료를 억을 수 없는 문제가 있고, 870 초 초과하면 도막의 기계적 강도가 저하되는 문제가 있다.In addition, it is preferable that the fast curing and the hardening paint prepared as described above have a difference in curing rate of 540 to 870 seconds. At this time, if the difference in the curing rate is less than 540 seconds, there is a problem in that 5 to 15% of the low gloss paint cannot be suppressed, and if it exceeds 870 seconds, the mechanical strength of the coating film is lowered.
본 발명에서는 이렇게 제조된 속경화 및 지경화 도료를 50/50의 중량비로 평량 후 교반기(더블 콘 믹서)에 투입하여 저속으로 30분간 교반한다. 그리고, 교반이 완료된 도료는 분체 정전 도장건에서 전압을 30 ∼ 90 KV로 하여 이송 공기압을 2 ∼ 3 기압으로 조정한 후, 건조 도막 두께 기준으로 60 ∼ 80 마이크론을 도장 후, 컨벤션 오븐의 온도를 180 ∼ 220 ℃에서 소지 온도 기준으로 10분 소부 건조시 도막의 광택이 5 ∼ 15% ( 60도 광택 기준)이며, 내 충격성이 듀폰 타이프시험기로 측정시 1 Kg에 30 cm의 물성이며, 내후성은 촉진 시험 기기(QUV)로 1000시간 시험시 광택 보존율이 백색 기준으로 80%이며, 색상의 변화가 2 이하로서 내후성, 기계적 강도가 우수한 분체 도료 조성물을 제조할 수 있다.In the present invention, the fast-curing and the hard-curing paint prepared in this way is added to a stirrer (double cone mixer) after a basis weight in a weight ratio of 50/50 and stirred for 30 minutes at low speed. After the stirring was completed, the powder was set to 30 to 90 KV in the powder electrostatic spray gun, and then the transfer air pressure was adjusted to 2 to 3 atmospheres. After coating 60 to 80 microns based on the dry film thickness, the temperature of the convention oven was adjusted. Glossiness of the coating film is 5-15% (60 degree gloss standard) when baking for 10 minutes at 180-220 ℃ based on the holding temperature.The impact resistance is 30 cm at 1 Kg as measured by the DuPont Type Tester. The powder coating composition having excellent gloss retention and mechanical strength with a gloss preservation rate of 80% on a white basis and a color change of 2 or less when tested for 1,000 hours by an accelerated test device (QUV) can be prepared.
이하, 본 발명을 다음의 실시예 및 비교예를 통하여 더욱 상세히 설명하겠는바, 하기 실시 예들이 본 발명의 범주를 한정하는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples and comparative examples, which are not intended to limit the scope of the present invention.
실시예Example
다음 표 1의 조성과 함량으로 저광택 분체도료 조성물을 제조하였다.Next to prepare a low gloss powder coating composition in the composition and content of Table 1.
비교예 1Comparative Example 1
반응성 차이가 큰 2종의 염기성 폴리에스테르 수지를 용융 블랜딩하고 경화제로서 이소프론 디이소시아네이트를 적용하여 저광택 도료를 제조하였다.A low gloss paint was prepared by melt blending two basic polyester resins having a large difference in reactivity and applying isopron diisocyanate as a curing agent.
비교예 2Comparative Example 2
미국특허 제5,687,067호에서 소개된 무광 도료 제조기술을 사용하여 2종의 산성 폴리에스테르 수지를 이용한 분체도료 제조 후 드라이 블렌딩하여 저광택 도료를 제조하였다.Using a matte paint production technology introduced in US Patent No. 5,687,067, a low gloss paint was prepared by dry blending after powder coating using two acid polyester resins.
실험예: 물성측정Experimental Example: Measurement of Properties
상기 실시예 1, 2 및 비교예 1, 2에 대하여 도료의 물성/백색안료 기준을 다음의 시험방법에 의거하여 측정하였고, 그 결과를 다음 표 2에 나타내었다.For Examples 1 and 2 and Comparative Examples 1 and 2, the physical property / white pigment standard of the paint was measured based on the following test method, and the results are shown in Table 2 below.
[시험 방법][Test Methods]
광택: ASTM D523으로 측정하였다.Gloss: Measured by ASTM D523.
내충격성: ISO 6272로 측정하였다.Impact resistance: measured by ISO 6272.
내후성: ISO 8130으로 측정하였다.Weather resistance: measured by ISO 8130.
내식성: ASTM D117로 측정하였다.Corrosion Resistance: Measured by ASTM D117.
외관: ISO 8130으로 측정하였다.Appearance: Measured by ISO 8130.
도료 저장성: ISO 8130으로 측정하였다.Paint shelf life: measured by ISO 8130.
이상에서 설명한 바와 같이, 본 발명의 저광택 폴리에스테르계 분체 도료 조성물은 속경화 및 지경화 분체도료와 함께 특정 경화제가 함유되어 고온 경화시 상기 도료들의 경화속도 차이로 표면에 미세한 요철을 형성하여 외관과 기계적 물성이 우수하고, 특히 5 ∼ 15%(60도 광택기 기준)의 저광택을 나타내어 천정재 및 건물의 내장재로 적용될 수 있다.As described above, the low gloss polyester powder coating composition of the present invention contains a specific curing agent together with the fast curing and the hardening powder coating to form fine unevenness on the surface due to the difference in the curing rate of the coatings at high temperature. It is excellent in mechanical properties and exhibits a low gloss of 5 to 15% (based on 60 degree glossiness), and can be applied to interior materials of ceilings and buildings.
Claims (5)
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| KR1020000083114A KR20020053470A (en) | 2000-12-27 | 2000-12-27 | Low gloss polyester type powder coating |
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| KR1020000083114A KR20020053470A (en) | 2000-12-27 | 2000-12-27 | Low gloss polyester type powder coating |
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| KR20020053470A true KR20020053470A (en) | 2002-07-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798268A1 (en) * | 2005-12-15 | 2007-06-20 | Dupont Powder Coatings France S.A.S. | Low gloss coil powder coating composition for coil coating |
| US7960482B2 (en) | 2006-12-11 | 2011-06-14 | Dupont Powder Coatings France Sas | Low gloss coil powder coating composition for coil coating |
| CN103642369A (en) * | 2013-09-03 | 2014-03-19 | 安徽普源分离机械制造有限公司 | Dry and mixed matte powder paint |
| CN112574634A (en) * | 2020-11-19 | 2021-03-30 | 宁波爱甬新材料科技有限公司 | Fast-curing powder coating and preparation method thereof |
-
2000
- 2000-12-27 KR KR1020000083114A patent/KR20020053470A/en not_active Application Discontinuation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798268A1 (en) * | 2005-12-15 | 2007-06-20 | Dupont Powder Coatings France S.A.S. | Low gloss coil powder coating composition for coil coating |
| WO2007070608A1 (en) * | 2005-12-15 | 2007-06-21 | Dupont Powder Coatings France S.A.S. | Low gloss coil powder coating composition for coil coating |
| AU2006326451B2 (en) * | 2005-12-15 | 2012-01-12 | Dupont Powder Coatings France S.A.S. | Low gloss coil powder coating composition for coil coating |
| US7960482B2 (en) | 2006-12-11 | 2011-06-14 | Dupont Powder Coatings France Sas | Low gloss coil powder coating composition for coil coating |
| CN103642369A (en) * | 2013-09-03 | 2014-03-19 | 安徽普源分离机械制造有限公司 | Dry and mixed matte powder paint |
| CN103642369B (en) * | 2013-09-03 | 2016-02-10 | 安徽普源分离机械制造有限公司 | A kind of dry mix sub-light powder paint |
| CN112574634A (en) * | 2020-11-19 | 2021-03-30 | 宁波爱甬新材料科技有限公司 | Fast-curing powder coating and preparation method thereof |
| CN112574634B (en) * | 2020-11-19 | 2022-08-09 | 宁波爱甬新材料科技有限公司 | Fast-curing powder coating and preparation method thereof |
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