JP3412870B2 - Color clear paint - Google Patents
Color clear paintInfo
- Publication number
- JP3412870B2 JP3412870B2 JP21085793A JP21085793A JP3412870B2 JP 3412870 B2 JP3412870 B2 JP 3412870B2 JP 21085793 A JP21085793 A JP 21085793A JP 21085793 A JP21085793 A JP 21085793A JP 3412870 B2 JP3412870 B2 JP 3412870B2
- Authority
- JP
- Japan
- Prior art keywords
- color
- color clear
- pigment
- clear paint
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、耐候性にすぐれた着色
透明塗膜を形成するカラークリヤー塗料に関する。
【０００２】
【従来の技術とその課題】従来、着色塗膜面またはメタ
リック塗膜面に、有機着色顔料を含有してなるカラーク
リヤー塗料を塗装することはすでに公知である。該カラ
ークリヤー塗料は着色透明塗膜を形成する塗料であっ
て、これを上記塗面に塗装してなる複層塗膜は、無色の
クリヤー塗料を塗装したものに比べて、色彩的多様化が
可能となり、しかも複層塗膜の深み感も向上するという
効果を有している。しかしながら、該カラークリヤー塗
料の着色剤として透明性の高い有機着色顔料を使用して
いるために、耐候性が十分でないという欠陥を有してお
り、その改良が強く望まれている。この耐候性が改良さ
れると用途が拡大され、深み感向上などの上記効果が十
分に発揮できる。
【０００３】
【課題を解決するための手段】本発明は、有機着色顔料
を配合してなるカラークリヤー塗料の耐候性を改良する
ことを目的としており、該カラークリヤー塗料に透明酸
化鉄顔料を特定量配合することによってその目的を達成
できることを見出し、本発明を完成した。
【０００４】 すなわち、本発明は、粒径０．１μ以下
の有機着色顔料を含有してなるカラークリヤ塗料におい
て、透明酸化鉄顔料を該カラークリヤー塗料の樹脂固形
分１００重量部あたり０．１〜５重量部配合してなるこ
とを特徴とする被塗面の色調が肉眼で透視できる透明性
を有する着色透明塗膜を形成するカラークリヤー塗料に
関する。
【０００５】本発明におけるカラークリヤー塗料は、粒
径０．１μ以下の有機着色顔料、樹脂成分および有機溶
剤を主成分とする液状塗料に、透明酸化鉄顔料を特定量
配合してなる。
【０００６】該顔料としては、上記樹脂成分および有機
溶剤に溶解もしくは分散する粒径０．１μ以下の有機着
色顔料であればよく、それ自体既知のものが使用でき
る。例えば、Ｉアゾ系有機着色顔料として、１）溶性ア
ゾ顔料（アゾレーキ顔料）：例えば、アセト酢酸アニリ
ド系、ピラゾロン系、βナフトール系、βオキシナフト
エ酸系、βオキシナフトエ酸アニリド系（ナフトールＡ
Ｓ系）など、２）不溶性アゾ顔料：例えば、アセト酢酸
アニリド系、ピラゾロン系、βナフトール系、βオキシ
ナフトエ酸アニリド系（ナフトールＡＳ系）など、３）
縮合アゾ顔料：例えば、アセト酢酸アニリド系、βオキ
シナフトエ酸アニリド系（ナフトールＡＳ系）など、II
フタロシアニン系有機着色顔料として、１）銅フタロシ
アニン顔料：例えば、銅フタロシアニン、ハロゲン化銅
フタロシアニン、スルホン化銅フタロシアニンレーキな
ど、２）無金属フタロシアニン顔料など、III 縮合多環
着色顔料として、アンスラキノン系顔料：例えば、アミ
ノアントラキノン、アントラピリミジン、フラバントロ
ン、アントアントロン、インダントロン、ピラントロ
ン、ビオラントロンなど、さらにペリレン、ペリノン、
キナクリドン、チオインジゴ、ジオキサジン、イソイン
ドリン、キノフタロン、金属錯体などもあげられる。こ
れらは、１種もしくは２種以上併用できる。
【０００７】該樹脂成分は、該カラークリヤー塗膜を形
成する主要成分であって、原則として基体樹脂と架橋剤
とからなっている。基体樹脂は、該架橋剤と架橋反応し
うる官能基を１分子中に２個以上有する樹脂であり、例
えば水酸基、グリシジル基、カルボキシル基、アミノ基
などから選ばれた１種以上の架橋性官能基を有するアク
リル樹脂、ポリエステル樹脂、フッソ樹脂およびこれら
の樹脂を基礎とする変性樹脂などがあげられる。また、
架橋剤は、該基体樹脂中の架橋性官能基と架橋反応しう
るものであり、例えばメラミン樹脂（これらは部分的に
もしくはすべてがアルキルエーテル化されているものも
含む）およびポリイソシアネート化合物（イソシアネー
トがブロックされたものも含む）などが特に好適であ
る。これらの基体樹脂および架橋剤は、クリヤー塗料に
おいてそれ自体既知のものが使用できる。
【０００８】該樹脂成分における基体樹脂と架橋剤との
比率は、目的に応じて任意に選択できるが、例えば該両
成分の合計重量に基づいて、基体樹脂は５０〜９０重量
％、特に６０〜８５重量％が、架橋剤は５０〜１０重量
％、特に４０〜１５重量％が、それぞれ好ましい。ま
た、有機着色顔料の配合量は、形成されるカラークリヤ
ー塗膜の透明性が損なわれない範囲内であれば特に制限
ないが、一般的には該樹脂成分１００重量部あたり、
０．５〜３重量部が好ましい。
【０００９】本発明において、カラークリヤー塗膜の透
明性に関する厳密な定義はないが、該カラークリヤー塗
料が通常、メタリック塗膜面やソリッドカラー塗膜面に
塗装されることが多いので、これらの被塗面に塗装され
た場合に該カラークリヤー塗膜を通じて該メタリック塗
膜面やソリッドカラー塗膜面の色調が肉眼で透視できる
範囲内にあることを透明性があると判断している。
【００１０】また、有機溶剤の配合量は、カラークリヤ
ー塗料の調製および塗装などに適する範囲であれば特に
制限されず、例えば固形分含有率で２０〜７０重量％が
好ましい。該有機溶剤は上記有機着色顔料を溶解または
分散し、樹脂成分を分散もしくは溶解するものであれば
よく、一般的な塗料用有機溶剤が使用できる。
【００１１】本発明において使用する透明酸化鉄顔料
は、既知のものが適用でき、具体的には、Ｆｅ2 Ｏ3 、
ＦｅＯＯＨ、Ｆｅ3 Ｏ4 などを含有する粉末で、その粒
径は０．００１〜０．１μであることが好ましい。粒径
が０．１μより大きくなると透明性が低下するので好ま
しくない。
【００１２】本発明のカラークリヤー塗料において、透
明酸化鉄顔料の配合量は、上記樹脂成分１００重量部
（固形分）あたり、０．１〜５重量部、好ましくは０．
５〜３重量部であって、０．１重量部より少なくなると
耐候性にすぐれた着色透明塗膜が得られず、一方５重量
部より多くなると塗膜の物理的性能が低下するので好ま
しくない。
【００１３】本発明のカラークリヤー塗料は上記した成
分を含有してなるが、さらに無機着色顔料、メタリック
顔料および各種添加剤などを必要に応じて配合すること
ができる。
【００１４】また、本発明のカラークリヤー塗料は前記
したごとく、ソリッドカラー塗膜面やメタリック塗膜面
などに塗装することが特に好ましく、その場合、これら
の被塗面と本発明のカラークリヤー塗料の塗装方式は２
コート１ベイク方式または２コート２ベイク方式が適し
ている。
【００１５】
【発明の効果】透明酸化鉄顔料を配合することによっ
て、カラークリヤー塗膜の耐候性が著しく向上した。
【００１６】本発明に関する実施例について説明する。
【００１７】実施例および比較例
表１に示した成分および配合量に基づいて均一に混合し
てカラークリヤー塗料を得た。
【００１８】
【表１】
【００１９】(*1):SUMICKACOAT FAST RED 2BR (住友化
学（株）製、商品名、平均粒径０．０５μ）
(*2):ルブクロンレッド ４５１Ｒ（東洋ソーダ（株）
製、商品名）
(*3):SICOTRANS RED L2817 （ＢＡＳＦ社製、商品名、
平均粒径０．０２μ）
【００２０】性能試験結果
上記実施例および比較例で得たカラークリヤー塗料を、
シルバーメタリック既硬化塗膜面に、硬化塗膜にもとづ
く膜厚が４０〜４５μになるように噴霧塗装し、１４０
℃で３０分加熱して該塗膜を硬化せしめた。このように
してなる塗板を屋外で１２か月間および２４か月間暴露
したのち、変色の程度を観察した。その結果を表２に示
した。
【００２１】
【表２】
【００２２】(*1):屋外ばくろ前との色差を、スガ試験
機（株）製、ＳＭカラーコンピュータＭＯＤＥＬ ＳＭ
−５で測定した結果である。
(*2):屋外ばくろ前と比較して、目視で変色および退色
などの程度を調べた結果である。○は全く変化なし、△
は変色および退色がわずか認められる、×は変色および
退色が著しく認められる、を示す。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color clear paint for forming a colored transparent coating film having excellent weather resistance. 2. Description of the Related Art Conventionally, it has been already known to apply a color clear coating containing an organic coloring pigment to a colored coating surface or a metallic coating surface. The color clear paint is a paint that forms a colored transparent paint film, and the multilayer paint film formed by applying the color clear paint film on the above-mentioned painted surface has more diversified color than the paint film coated with a colorless clear paint. This has the effect of improving the depth of the multilayer coating film. However, since a highly transparent organic coloring pigment is used as a coloring agent of the color clear coating, it has a defect that weather resistance is not sufficient, and improvement thereof is strongly desired. When the weather resistance is improved, the applications are expanded, and the above-mentioned effects such as an improvement in the sense of depth can be sufficiently exhibited. SUMMARY OF THE INVENTION An object of the present invention is to improve the weather resistance of a color clear paint containing an organic coloring pigment, and to specify a transparent iron oxide pigment in the color clear paint. The present inventors have found that the object can be achieved by blending in an appropriate amount, and completed the present invention. That is, the present invention relates to a color clear paint containing an organic color pigment having a particle diameter of 0.1 μ or less, wherein a transparent iron oxide pigment is used in an amount of 0.1 to 100 parts by weight per 100 parts by weight of a resin solid content of the color clear paint. 5 parts by weight blended, characterized in that the color of the surface to be coated can be seen with the naked eye
The present invention relates to a color clear paint for forming a colored transparent coating film having the following . [0005] The color clear paint of the present invention is prepared by mixing a specific amount of a transparent iron oxide pigment with a liquid paint mainly composed of an organic color pigment having a particle size of 0.1 μm or less, a resin component and an organic solvent. The pigment may be any organic color pigment having a particle size of 0.1 μm or less which is dissolved or dispersed in the resin component and the organic solvent, and any known pigment can be used. For example, as an azo organic color pigment, 1) Soluble azo pigment (azo lake pigment): For example, acetoacetic anilide type, pyrazolone type, β naphthol type, β oxynaphthoic acid type, β oxynaphthoic acid anilide type (naphthol A)
S), etc. 2) Insoluble azo pigments: for example, acetoacetic anilide, pyrazolone, β-naphthol, β-oxynaphthoic anilide (naphthol AS), 3)
Condensed azo pigments: for example, acetoacetic anilide-based, β-oxynaphthoic anilide-based (naphthol AS-based), and the like.
1) Copper phthalocyanine pigments: for example, copper phthalocyanine, halogenated copper phthalocyanine, sulfonated copper phthalocyanine lake, etc. 2) Metal-free phthalocyanine pigments, etc. III Anthraquinone pigments as condensed polycyclic coloring pigments : For example, aminoanthraquinone, anthrapyrimidine, flavanthrone, anthantrone, indanthrone, pyranthrone, biolanthrone, etc., as well as perylene, perinone,
Examples thereof include quinacridone, thioindigo, dioxazine, isoindoline, quinophthalone, and metal complexes. These can be used alone or in combination of two or more. The resin component is a main component for forming the color clear coating film, and is basically composed of a base resin and a crosslinking agent. The base resin is a resin having two or more functional groups in one molecule capable of undergoing a cross-linking reaction with the cross-linking agent. For example, at least one cross-linkable functional group selected from a hydroxyl group, a glycidyl group, a carboxyl group, an amino group, and the like. Examples include acrylic resins, polyester resins, and fluoro resins having a group, and modified resins based on these resins. Also,
The cross-linking agent is capable of performing a cross-linking reaction with a cross-linkable functional group in the base resin, and includes, for example, a melamine resin (including those partially or wholly alkyl etherified) and a polyisocyanate compound (isocyanate). Are also particularly preferred. As these base resins and crosslinking agents, those known per se in clear coatings can be used. [0008] The ratio of the base resin to the crosslinking agent in the resin component can be arbitrarily selected depending on the purpose. For example, the base resin is 50 to 90% by weight, particularly 60 to 90% by weight based on the total weight of the two components. 85% by weight, and the crosslinking agent is preferably 50 to 10% by weight, particularly preferably 40 to 15% by weight. Further, the amount of the organic coloring pigment is not particularly limited as long as the transparency of the formed color clear coating film is not impaired, but generally, per 100 parts by weight of the resin component,
0.5 to 3 parts by weight is preferred. In the present invention, there is no strict definition regarding the transparency of the color clear coating film. However, since the color clear coating material is usually applied to a metallic coating surface or a solid color coating surface, these color clear coatings are often used. It is determined that there is transparency when the color tone of the metallic coating surface or the solid color coating surface is within a range that can be seen by the naked eye through the color clear coating film when applied to the surface to be coated. The compounding amount of the organic solvent is not particularly limited as long as it is within a range suitable for the preparation and coating of a color clear coating, and for example, the solid content is preferably 20 to 70% by weight. The organic solvent may be any as long as it dissolves or disperses the organic color pigment and disperses or dissolves the resin component, and a general organic solvent for coatings can be used. As the transparent iron oxide pigment used in the present invention, known pigments can be applied, and specifically, Fe 2 O 3 ,
It is a powder containing FeOOH, Fe 3 O 4, etc., and its particle size is preferably 0.001 to 0.1 μm. When the particle size is larger than 0.1 μm, transparency is undesirably reduced. In the color clear coating composition of the present invention, the amount of the transparent iron oxide pigment is 0.1 to 5 parts by weight, preferably 0.1 to 5 parts by weight, per 100 parts by weight (solid content) of the resin component.
If the amount is 5 to 3 parts by weight, and if the amount is less than 0.1 part by weight, a colored transparent coating film having excellent weather resistance will not be obtained, while if it is more than 5 parts by weight, the physical properties of the coating film will decrease, which is not preferable. . The color clear coating composition of the present invention contains the above-mentioned components, and may further contain an inorganic coloring pigment, a metallic pigment, various additives, and the like, if necessary. As described above, the color clear coating of the present invention is particularly preferably applied to a solid color coating surface or a metallic coating surface, in which case the coated surface and the color clear coating of the present invention are applied. Painting method is 2
A one-coat two-bake method or a two-coat two-bake method is suitable. According to the present invention, the weather resistance of the color clear coating film is remarkably improved by blending the transparent iron oxide pigment. An embodiment according to the present invention will be described. EXAMPLES AND COMPARATIVE EXAMPLES Based on the components and amounts shown in Table 1, they were mixed uniformly to obtain a color clear coating. [Table 1] (* 1): SUMICKACOAT FAST RED 2BR (manufactured by Sumitomo Chemical Co., Ltd., trade name, average particle size: 0.05 μ) (* 2): Rubucron Red 451R (Toyo Soda Co., Ltd.)
(Product name) (* 3): SICOTRANS RED L2817 (BASF product name,
(Average particle size: 0.02μ) Performance test results The color clear paints obtained in the above Examples and Comparative Examples were
Spray coating on the silver metallic already-cured coating surface so that the film thickness based on the cured coating film becomes 40 to 45 μm, 140
The coating was cured by heating at 30 ° C. for 30 minutes. After exposing the thus-coated plate outdoors for 12 months and 24 months, the degree of discoloration was observed. The results are shown in Table 2. [Table 2] (* 1): The color difference from the outdoor crossing was measured by SM Color Computer Model SM manufactured by Suga Test Instruments Co., Ltd.
This is the result measured at -5. (* 2): This is the result of visually examining the degree of discoloration, fading, and the like, as compared to before outdoor exposure. ○ means no change, △
Indicates that discoloration and fading are slightly observed, and x indicates that discoloration and fading are remarkably observed.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C09D 7/12 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) C09D 7/12
Claims (1)
してなるカラークリヤ塗料において、透明酸化鉄顔料を
該カラークリヤー塗料の樹脂固形分１００重量部あたり
０．１〜５重量部配合してなることを特徴とする被塗面
の色調が肉眼で透視できる透明性を有する着色透明塗膜
を形成するカラークリヤー塗料。(57) [Claim 1] In a color clear paint containing an organic color pigment having a particle size of 0.1 μm or less, a transparent iron oxide pigment is added to a resin solid content of 100 parts by weight of the color clear paint. Surface to be coated characterized by being blended in an amount of 0.1 to 5 parts by weight per unit
Colored transparent coating with transparency that allows the color of the color to be seen through the naked eye
Forming a color clear paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21085793A JP3412870B2 (en) | 1993-08-02 | 1993-08-02 | Color clear paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21085793A JP3412870B2 (en) | 1993-08-02 | 1993-08-02 | Color clear paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0741710A JPH0741710A (en) | 1995-02-10 |
| JP3412870B2 true JP3412870B2 (en) | 2003-06-03 |
Family
ID=16596255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21085793A Expired - Lifetime JP3412870B2 (en) | 1993-08-02 | 1993-08-02 | Color clear paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3412870B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013169507A (en) * | 2012-02-21 | 2013-09-02 | Kansai Paint Co Ltd | Coating film forming method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548641A (en) * | 1977-06-23 | 1979-01-23 | Toyota Motor Corp | Metallic powder coating |
| JPS60190477A (en) * | 1984-03-12 | 1985-09-27 | Toyota Motor Corp | Clear coating compound composition |
| JPH0632781B2 (en) * | 1986-08-23 | 1994-05-02 | トヨタ自動車株式会社 | Substrate with 2 coat coating |
| JPH07100764B2 (en) * | 1990-07-03 | 1995-11-01 | 宇部興産株式会社 | Black photocurable polymer composition and method for forming black photocurable film |
| JPH0776417B2 (en) * | 1990-08-28 | 1995-08-16 | 松下電工株式会社 | Transparent coloring method |
-
1993
- 1993-08-02 JP JP21085793A patent/JP3412870B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741710A (en) | 1995-02-10 |
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