JPH07119384B2 - Anti-chipping coating composition - Google Patents
Anti-chipping coating compositionInfo
- Publication number
- JPH07119384B2 JPH07119384B2 JP4039789A JP4039789A JPH07119384B2 JP H07119384 B2 JPH07119384 B2 JP H07119384B2 JP 4039789 A JP4039789 A JP 4039789A JP 4039789 A JP4039789 A JP 4039789A JP H07119384 B2 JPH07119384 B2 JP H07119384B2
- Authority
- JP
- Japan
- Prior art keywords
- chipping
- coating
- coating composition
- weather resistance
- polyester resin
- 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
Landscapes
- Paints Or Removers (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は車両、特に自動車の車体の塗装に用いられる
耐チッピング塗料、特に耐候性に優れた耐チッピング塗
料組成物に関する。TECHNICAL FIELD The present invention relates to a chipping-resistant coating composition used for coating a vehicle, particularly an automobile body, and particularly to a chipping-resistant coating composition excellent in weather resistance.
（従来の技術） 従来の耐チッピング塗料組成物としては、ポリオール
と、イソフタル酸とアジピン酸の両酸成分の割合が5:5
からなるポリエステル樹脂と、ブチル化メラミンとメチ
ル化メラミンが5:5からなるメラミン樹脂から成る塗料
樹脂組成物が用いられている。この塗料樹脂組成物は、
電着塗装を完了し、中塗塗装が実施された後チッピング
を必要とする部位（例えばサイドシル等）に耐チッピン
グ塗装され、次いでマスキングし、上塗塗装が施され車
両塗装が完了する。即ちその塗装工程を例示すると次の
通りである。(Prior Art) A conventional chipping-resistant coating composition has a ratio of polyol to isophthalic acid and adipic acid of 5: 5.
A coating resin composition is used which comprises a polyester resin composed of (5) and a melamine resin composed of butylated melamine and methylated melamine (5: 5). This coating resin composition,
After the electrodeposition coating is completed and the intermediate coating is carried out, the portion requiring chipping (for example, side sill etc.) is chipped-resistant coated, then masked, and the top coating is applied to complete the vehicle coating. That is, an example of the coating process is as follows.
上記の如く、サイドシル部を塗装する場合は、電着塗装
と中塗塗装が終了した後、耐チッピング塗料を塗装し、
その上に黒色上塗塗装が施されている。また塗装ライン
によっては、中塗り塗装と耐チッピング塗装が入替わる
場合もある。 As mentioned above, when painting the side sill part, after the electrodeposition coating and intermediate coating have been completed, apply the chipping resistant coating,
A black top coat is applied on it. Depending on the coating line, the intermediate coating and chipping-resistant coating may be interchanged.
（発明が解決しようとする課題） しかしながら、このような従来のサイドシル部の塗装に
あっては耐チッピング塗装が、上塗塗装の下層に位置し
ており、耐候性は特に必要としていなかったため、塗
装工程が繁雑である、耐候性がないため、上塗として
は使用できない、色域が少ない等の問題点があった。(Problems to be solved by the invention) However, in such conventional coating of the side sill portion, the chipping-resistant coating is located in the lower layer of the top coating, and weather resistance is not particularly required. Since the process is complicated, and there is no weather resistance, there are problems that it cannot be used as a top coat and that the color gamut is small.
（課題を解決するための手段） この発明は、このような従来の問題点に着目してなされ
たもので、ポリオールと、イソフタル酸とアジピン酸の
両酸成分の割合が６〜9:4〜１からなるポリエステル樹
脂と、ブチル化メラミンとメチル化メラミンが、5:5か
らなるメラミン樹脂とかなり、ポリエステル樹脂中のイ
ソフタル酸が60〜90重量％であり、更に添加剤として紫
外線吸収剤を0.2〜３重量％添加してなる耐チッピング
塗料組成物に関するものである。(Means for Solving the Problem) The present invention has been made by paying attention to such a conventional problem, and the ratio of the polyol and the acid components of isophthalic acid and adipic acid is 6 to 9: 4 to. Polyester resin consisting of 1 and butylated melamine and methylated melamine, melamine resin consisting of 5: 5, isophthalic acid in the polyester resin is 60 to 90% by weight, and an ultraviolet absorber as an additive is 0.2 The present invention relates to a chipping resistant coating composition containing 3 to 3% by weight.
（作 用） 従来の耐チッピング塗料は、耐チッピング性はあるもの
の耐候性が劣る、色域が少ない等の欠点を有していたた
め、自動車車体の上塗としては使用できなかった。そこ
でこの発明の耐チッピング塗料組成物は耐候性付与のた
め、ポリエステル樹脂中のイソフタル酸の含有量を多く
し、かつ紫外線吸収剤を添加したものである。即ち、本
発明の耐チッピング塗料組成物に用いるポリエステル樹
脂は、ポリオールと、イソフタル酸とアジピン酸の両酸
成分の割合が６〜9:4〜１として作製され、且つポリエ
ステル樹脂中にイソフタル酸が60〜90重量％含有される
もので、上記条件を満足しない場合には、意図する耐候
性が得られない。また添加剤としての紫外線吸収剤の添
加量を0.2〜３重量％とするが、この範囲外では耐チッ
ピング塗料組成物による塗膜が劣化し、好ましくない。
さらに上塗として使用するために、各種の着色顔料を添
加し、色域を拡大することも可能となった。(Working) Conventional chipping resistant coatings have drawbacks such as poor weather resistance and a small color gamut, although they have chipping resistance, so they cannot be used as top coatings for automobile bodies. Therefore, in order to impart weather resistance, the chipping-resistant coating composition of the present invention has a high content of isophthalic acid in the polyester resin and an ultraviolet absorber added. That is, the polyester resin used in the chipping-resistant coating composition of the present invention is prepared such that the ratio of the polyol and both acid components of isophthalic acid and adipic acid is 6 to 9: 4-1, and isophthalic acid is contained in the polyester resin. The content is 60 to 90% by weight, and if the above conditions are not satisfied, the intended weather resistance cannot be obtained. Further, the addition amount of the ultraviolet absorber as an additive is 0.2 to 3% by weight, but if it is out of this range, the coating film of the chipping-resistant coating composition deteriorates, which is not preferable.
Furthermore, for use as a top coat, various color pigments can be added to expand the color gamut.
（実施例） 次に本発明を実施例および比較例により説明する。(Example) Next, the present invention will be described with reference to Examples and Comparative Examples.
実施例１〜３、比較例１ 第１表に示す樹脂および添加剤を用い、第２表に示す配
合で実施例１〜３および比較例１の塗料を作製した。Examples 1 to 3 and Comparative Example 1 The coating materials of Examples 1 to 3 and Comparative Example 1 were prepared using the resins and additives shown in Table 1 with the formulations shown in Table 2.
上記実施例１〜３および比較例１の塗料を用い、次に示
す方法により耐候性試験板を作成した。 Using the paints of Examples 1 to 3 and Comparative Example 1 described above, a weather resistance test plate was prepared by the following method.
耐候性試験板の作成： SPCCの鋼板に化成処理（日本パーカライジング社製 PB
L3020処理）を行い、その化成処理板に膜厚が20μｍと
なるように電着塗装（日本ペイント製パワートップＵ−
600）を行い、160℃で30分間焼付けを行い、電着塗膜を
硬化させた。さらにその上に中塗塗料（日本油脂製アク
ア9000）を、膜厚が35μｍとなるように塗装した後、16
0℃にて30分間焼付けた。その上に、実施例１〜３の耐
チッピング塗料を100μｍ塗装し、140℃にて30分間焼付
けを行いそれぞれ試験板１〜３を得た。また、上記中塗
までを施した塗板に比較例１の耐チッピング塗料を20μ
ｍ塗装し、140℃にて30分間焼付けを行い、試験板４を
得た。Preparation of weather resistance test plate: chemical conversion treatment on SPCC steel plate (PB made by Nippon Parkerizing Co., Ltd.
L3020 treatment), and the electrodeposited coating (Nippon Paint Power Top U-
600) and baked at 160 ° C. for 30 minutes to cure the electrodeposition coating film. Then, apply an intermediate coating (Nippon Oil & Fats Aqua 9000) on it to a film thickness of 35 μm.
It was baked at 0 ° C for 30 minutes. On top of that, the chipping-resistant paints of Examples 1 to 3 were applied in a thickness of 100 μm and baked at 140 ° C. for 30 minutes to obtain test plates 1 to 3, respectively. In addition, the anti-chipping paint of Comparative Example 1 was applied to
m, and baked at 140 ° C. for 30 minutes to obtain a test plate 4.
次に、上記試験板を用い、JIS D 0205「耐候性試験通
則」に規定されたサンシャインウエザオメータにより各
塗膜の耐候性を比較し、得た結果を第３表に示す。Next, using the above test plates, the weather resistance of each coating film was compared by a sunshine weatherometer specified in JIS D 0205 "General rules for weather resistance test", and the obtained results are shown in Table 3.
（試験条件） ブラックパネル温度 63℃ 雨あり 時 間 750時間（連続） （発明の効果） 以上説明してきたように、本発明においてはポリオール
と、イソフタル酸とアジピン酸から成るポリエステル樹
脂の両酸成分の割合および該樹脂中のイソフタル酸含有
量を特定し、かつ紫外線吸収剤を添加したことにより、
耐候性が向上した。また各種の着色顔料を添加し色域の
拡大が可能となり、第３表からも明らかなように塗膜の
光沢および色差が改善され、実施例１〜３に示すように
次の工程 （マスキングはサイドシル部の耐チッピング塗装が終了
した時点で、ドア部に上塗塗装をするために、サイドシ
ル部に施す） 或いは次の工程 （マスキングはドア及びサイドシル部に上塗塗装が終了
した時点で、サイドシル部に耐チッピング塗装をするた
めに、ドア部に施す） に従って、自動車車体の上塗として使用することが可能
となった。またツートーン車の下部色塗膜の塗装にも使
用可能であるという効果がある。(Test conditions) Black panel temperature 63 ° C with rain 750 hours (continuous) (Effect of the invention) As described above, in the present invention, the ratio of both acid components of the polyol and the polyester resin composed of isophthalic acid and adipic acid and the isophthalic acid content in the resin are specified, and the ultraviolet absorption is determined. By adding the agent,
Improved weather resistance. In addition, various color pigments can be added to expand the color gamut, the gloss and color difference of the coating film can be improved as is clear from Table 3, and the following steps can be performed as shown in Examples 1 to 3. (Masking is applied to the side sill part in order to apply the top coating to the door part when the chipping resistant coating of the side sill part is completed.) Or the next step (The masking is applied to the door part to apply chipping-resistant coating to the side sill part when the overcoating of the door and the side sill part is finished.) It also has the effect that it can be used for painting the lower color coating of two-tone vehicles.
Claims (1)
の両酸成分の割合が６〜9:4〜１からなるポリエステル
樹脂と、ブチル化メラミンとメチル化メラミンが5:5か
らなるメラミン樹脂とからなり、ポリエステル樹脂中の
イソフタル酸が60〜90重量％であり、更に添加剤として
紫外線吸収剤を0.2〜３重量％添加してなる耐チッピン
グ塗料組成物。1. A polyol, a polyester resin in which the ratio of both acid components of isophthalic acid and adipic acid is 6 to 9: 4-1, and a melamine resin in which butylated melamine and methylated melamine are 5: 5. A chipping-resistant coating composition comprising 60 to 90% by weight of isophthalic acid in a polyester resin and 0.2 to 3% by weight of an ultraviolet absorber as an additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4039789A JPH07119384B2 (en) | 1989-02-22 | 1989-02-22 | Anti-chipping coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4039789A JPH07119384B2 (en) | 1989-02-22 | 1989-02-22 | Anti-chipping coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02219880A JPH02219880A (en) | 1990-09-03 |
| JPH07119384B2 true JPH07119384B2 (en) | 1995-12-20 |
Family
ID=12579534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4039789A Expired - Lifetime JPH07119384B2 (en) | 1989-02-22 | 1989-02-22 | Anti-chipping coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119384B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130034741A1 (en) * | 2011-08-04 | 2013-02-07 | Ppg Industries Ohio, Inc. | Branched polyester polymers comprising isophthalic acid and coatings comprising the same |
-
1989
- 1989-02-22 JP JP4039789A patent/JPH07119384B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02219880A (en) | 1990-09-03 |
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