JPH049476A - Surface-treating material for aluminum for automobile - Google Patents
Surface-treating material for aluminum for automobileInfo
- Publication number
- JPH049476A JPH049476A JP11097290A JP11097290A JPH049476A JP H049476 A JPH049476 A JP H049476A JP 11097290 A JP11097290 A JP 11097290A JP 11097290 A JP11097290 A JP 11097290A JP H049476 A JPH049476 A JP H049476A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- resin
- plate
- chromate film
- electrodeposition coating
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 25
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 3
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 8
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical class [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 abstract description 23
- 238000000576 coating method Methods 0.000 abstract description 23
- 238000004070 electrodeposition Methods 0.000 abstract description 20
- 238000005260 corrosion Methods 0.000 abstract description 17
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 abstract description 17
- 229910000165 zinc phosphate Inorganic materials 0.000 abstract description 17
- 230000007797 corrosion Effects 0.000 abstract description 16
- 150000002500 ions Chemical class 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 150000001768 cations Chemical class 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000010828 elution Methods 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- -1 aluminum ions Chemical class 0.000 description 7
- 238000005238 degreasing Methods 0.000 description 6
- 229910001430 chromium ion Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
（産業上の利用分野）
本発明は自動車用アルミニウム表面処理材に関し、自動
車用ボディパネル等として、鋼板と同時にリン酸亜鉛処
理、電着塗装され、更には中塗、上塗塗装して使用され
るアルミニウム表面処理材に適している。
（従来の技術）
従来より、自動車用ボディパネル材としては鋼板が多用
されているが、アルミニウム又はアルミニウム合金板材
（以下、単に「アルミニウム板」と云う）は、軽量性、
高強力性、更には優れた耐食性を備えていることから、
鋼板と組み合せて使用されるようになってきてい、る。
高度な品質（耐食性、鮮映性等）を要求される自動車ボ
ディパネル材は、鋼板とアルミニウム板をそれぞれ成形
加工した後、組み合せ、次いで下地処理としてリン酸亜
鉛処理、電着塗装が施され。
更に中塗、上塗塗装されるのが一般的である。
（発明が解決しようとする課題）
従来、鋼板とアルミニウム板を自動車パネル材として組
み合せ使用する場合には、アルミニウム板を成形した後
、クロメート処理する方法（特開昭６１−９６０７４号
参照）と、防錆効果を上げるために素材メーカーにおい
て予めクロメート処理した材料を成形する方法とがあり
、いずれの方法の場合にも、その後、鋼板の成形体と組
み合せ、しかる後にリン酸亜鉛処理を施し、電着塗装を
する方法が提案されている。
これらの提案に係る方法においては、アルミニウム板を
クロメート皮膜で被覆することにより。
リン酸亜鉛浴中に溶出するアルミニウムイオンを低減し
、鋼板に対するリン酸亜鉛処理皮膜の生成に及ぼす悪影
響を防止することを意図したものであり、更にはアルミ
ニウム材の自動車パネルとしての耐食性−向上を図った
ものである。
しかし、この方法では、クロメート皮膜自体のリン酸亜
鉛浴中への溶出は避けられず、リン酸亜鉛浴のスラッジ
増大による劣化やクロメート皮膜自体の耐食機能の低下
等の問題があった。
また、成形時に塗油するが、クロメート皮膜は脱脂性に
劣り、電着塗装時に電着むら等を生じ、中塗、上塗後の
品質に悪影響を与えるという問題があった。
本発明は、上記従来技術の問題点を解決し、クロメート
皮膜の脱油性の向上と、リン酸亜鉛浴中へのアルミニウ
ムイオンやクロメート皮膜等の溶出防止と、アルミニウ
ム材の電着塗装後の耐食性、鮮映性等を向上し得る自動
車用アルミニウム表面処理材を提供することを目的とす
るものである。
（課題を解決するための手段）
本発明者は、前述の通り、自動車パネル材において鋼板
とアルミニウム板を組み合せて、リン酸亜鉛処理、電着
塗装して使用する場合の問題点を解決すべく、脱脂性向
上と、リン酸亜鉛浴中へのアルミニウムイオン、クロメ
ート皮膜等の溶出防止とアルミニウム材の電着塗装後の
耐食性、鮮映性等の向上を可能にする方策について鋭意
研究を重ねた。
その結果、第１Ｍとしてのクロメート皮膜中のクロム量
を規制すると共に、第２層として特定の皮膜厚さの樹脂
層を被覆することにより、或いは更に該被覆樹脂層にジ
ルコン塩を含有させることにより、上記要求を満足させ
ることが可能であることを見い出し、ここに本発明をな
したものである。
すなわち、本発明は、アルミニウム板上に、第１ｍとし
てクロム量１０〜１００＋＋ｇ／ｍ”のクロメート皮膜
を設け、更にその上に第２層として０゜１〜１．０μｍ
厚の耐油、アルカリ、酸性を有する樹脂層、或いは該樹
脂にジルコン塩を含有させた層を設けたことを特徴とす
る自動車用アルミニウム表面処理材を要旨とするもので
ある。
以下に本発明を更に詳細に説明する。
（作用）
本発明では、前述の如く、自動車パネル材等に使用する
場合、製造工程として、成形加工、リン酸亜鉛処理、電
着塗装等の処理を受ける工程に供されるアルミニウム表
面処理材を対象としている。
まず、成形加工においては、塗油することが一般的であ
る。更に電着塗装に用いられる塗料としては、アニオン
型からカチオン型に移行し、飛躍的に防食機能が強化さ
れ、現在ではカチオン型電着塗装が定着している。とこ
ろが、カチオン電着塗装時、素材表面では次式で示され
る反応が起こり。
素材表面近傍のＰＨはアルカリ性となる（カチオン塗料
） （析出）
そこで２本発明では、これらのことに着目し、油、アル
カリ、酸に対して強靭な主として樹脂からなる皮膜を設
け、成形加工、カチオン電着塗装材の耐食性、鮮映性を
向上させると同時に、リン酸亜鉛浴中でのアルミニウム
イオン、クロムイオンの溶出を防止する点を主眼とした
ものである。
ここで、クロメート皮膜（第１層）は、クロム量がＬｏ
ｎｇ／ｍ２未満ではその耐食性を充分に得ることが困難
であり、また１００ｍｇ／ｍ”より多いと、密着性、溶
接性が低下する要因となる。したがって、クロム量は１
０〜１０ｃ）ｎｇ／ｒｎ２の範囲とする必要がある。
また、主として樹脂成分からなる皮膜（第２層）は、皮
膜厚さが０．１μｍ未満では、アルミニウム材表面を充
分に被覆することが困難であって、リン酸亜鉛浴中にお
いてアルミニウムイオン、クロムイオンの溶出を防止で
きず、電着塗装後において耐食性も充分でない。一方、
皮膜厚さが１．０μｍを超えると、皮膜の多孔性が低下
し、電極反応が起こり難く、カチオン電着塗装が困難と
なる。
したがって、該皮膜厚さは０．１〜１．０μ腸の範囲と
する必要がある。
かよる耐油、アルカリ、酸性を備えた主として樹脂から
なる皮膜を得るには、樹脂としてはアクリル−エポキシ
樹脂が好ましく、更に該樹脂にジルコンを含有させたも
のが好ましい。勿論、このような樹脂のみに限定されな
いことは云うまでもない。
なお、樹脂組成物は、製造条件によって水溶性型（エマ
ルジョンを含む）或いは溶剤型が得られるが、どちらの
タイプでも本発明の目的は達成できる。また、皮膜厚さ
が０．１〜１μｍと薄いので、多孔性の皮膜を得るため
には、固形分は３０重量％以下にするのが好ましい。
また、ジルコン塩添加量を樹脂固形分に対して、数％か
ら数十％に調整することで皮膜の多孔性、耐油、アルカ
リ、酸性を維持することができる。
更に、上記皮膜（第２層）は多孔質であることが好まし
く、多孔質性は、食塩水（例えば、１ｗｔ％ＮａＣＱ）
中にて通電（例えば、電圧６ｖ）し、測定した漏洩電流
が目安となり、最低数ｍ Ａ ／ ｄｍ”以上のものが
好ましい。
アルミニウム板としては、この種の用途に仕様し得る成
分系、組成のものであれば如何なる材質のものでもよい
ことは云うまでもない、また、クロメート皮膜の形成条
件もクロム量以外は制限されないことは云うまでもない
。
次に本発明の実施例を示す。
（実施例）
ＪＩＳ５１８２板材（１，Ｃ）＋＋＋ｓ厚）を通常のア
ルカリ脱脂した後、第１表に示す条件にて、第１層とし
てクロメート処理を施し、第２層として樹脂を被覆し、
次いで塗装処理（カチオン電着塗装）した後、１５０〜
２００”Ｃにおいて１分焼付した。
クロメート処理は、アルサーフ１２００（日本ペイント
製）３ｇ／Ｑの条件で、温度、時間を変えてクロム量を
調整した。
作成した各サンプルについて、塗油後、加工し、脱脂性
、リン酸亜鉛浴中へのイオン溶出、カチオン電着塗装後
の耐食性、鮮映性の評価を以下の要領にて行った。なお
、加工はエリクセン試験加工（６ｍ＋ｍ、密着曲げ）に
より行った。
それらの結果を第１表に併記する。
１■監立
各サンプルを４５℃の脱脂浴に２分浸漬した後、目視ａ
察した。
■リン 亜 へのイオンの
各サンプルを４３℃のリン酸亜鉛浴に２分浸漬した後、
アルミイオン、クロムイオンの各溶出量を測定した。
■カチオン電着塗 の
カチオン電着塗装（２５０ＶＸ３分）し、１７５℃×２
０分焼付けて電着塗装板を作成した。耐食性は塗装面の
平坦部と加工部（エリクセン部、密着曲げ部）にスクラ
ッチを入れ、ＪＩＳＺ２３７１に準じて塩水噴霧試験１
０００時間を実施した後、スクラッチからの最大腐食長
さ（片面）を測定した。鮮映性の測定はＰＧＤ計により
行った。
第１表より１本発明材は、脱脂性に優れ、更にリン酸亜
鉛浴中へのアルミニウムイオン、クロムイオンの溶出が
皆無か殆どなく、更にはカチオン電着塗装後の耐食性、
鮮映性も優れていることがわかる。
なお、これら本発明材において、第２層の樹脂中にジル
コン塩を適量含有させたところ、特に耐蝕性が更に向上
した。(Industrial Application Field) The present invention relates to aluminum surface treatment materials for automobiles, and the present invention relates to aluminum surface-treated materials for automobiles, which are used as automobile body panels, etc., and are treated with zinc phosphate and electrocoated at the same time as steel sheets, and are further coated with intermediate and top coats. Suitable for surface treatment materials. (Prior Art) Conventionally, steel plates have been widely used as automobile body panel materials, but aluminum or aluminum alloy plates (hereinafter simply referred to as "aluminum plates") are lightweight,
Due to its high strength and excellent corrosion resistance,
It is increasingly being used in combination with steel plates. Automotive body panel materials, which require high quality (corrosion resistance, sharpness, etc.), are made of steel sheets and aluminum sheets that are formed and then assembled, followed by zinc phosphate treatment and electrodeposition coating as a base treatment. Furthermore, it is common to apply an intermediate coat and a top coat. (Problems to be Solved by the Invention) Conventionally, when a steel plate and an aluminum plate are used in combination as an automobile panel material, there is a method in which the aluminum plate is formed and then subjected to chromate treatment (see JP-A-61-96074); In order to increase the rust prevention effect, there is a method in which the material is pre-treated with chromate and then molded by the material manufacturer.In either method, the material is then combined with a steel plate molded body, then treated with zinc phosphate, and then electroplated. A method of applying paint has been proposed. In the methods according to these proposals, by coating an aluminum plate with a chromate film. It is intended to reduce the amount of aluminum ions eluted into the zinc phosphate bath and prevent the negative effect on the formation of the zinc phosphate treatment film on steel sheets.It is also intended to improve the corrosion resistance of aluminum materials as automobile panels. It was planned. However, with this method, elution of the chromate film itself into the zinc phosphate bath is unavoidable, resulting in problems such as deterioration due to increased sludge in the zinc phosphate bath and a decrease in the anti-corrosion function of the chromate film itself. Furthermore, although oil is applied during molding, the chromate film has poor degreasing properties and causes uneven electrodeposition during electrodeposition, which adversely affects the quality after intermediate coating and top coating. The present invention solves the problems of the prior art described above, and improves the oil removal properties of chromate films, prevents the elution of aluminum ions and chromate films into zinc phosphate baths, and improves the corrosion resistance of aluminum materials after electrodeposition coating. The object of the present invention is to provide an aluminum surface treatment material for automobiles that can improve image clarity and the like. (Means for Solving the Problems) As mentioned above, the present inventor aimed to solve the problems when a combination of steel plate and aluminum plate is used as an automobile panel material after being treated with zinc phosphate and electrocoated. We have conducted intensive research on measures to improve degreasing properties, prevent the elution of aluminum ions and chromate films into the zinc phosphate bath, and improve the corrosion resistance and sharpness of aluminum materials after electrodeposition coating. . As a result, by regulating the amount of chromium in the chromate film as the first M, and by coating a resin layer with a specific film thickness as the second layer, or by further containing zircon salt in the coating resin layer, The inventors have discovered that it is possible to satisfy the above requirements, and have hereby devised the present invention. That is, in the present invention, a chromate film with a chromium content of 10 to 100++ g/m" is provided as the first layer on an aluminum plate, and a chromate film with a chromium content of 0.1 to 1.0 μm is further formed on the aluminum plate as a second layer.
The object of the present invention is to provide an aluminum surface treatment material for automobiles, which is characterized by being provided with a thick oil-resistant, alkaline, or acidic resin layer, or a layer containing a zircon salt in the resin. The present invention will be explained in more detail below. (Function) As described above, in the present invention, when used for automobile panel materials, etc., aluminum surface-treated materials are subjected to processes such as molding, zinc phosphate treatment, electrodeposition coating, etc. as manufacturing processes. It is targeted. First, in the molding process, it is common to apply oil. Furthermore, the paint used for electrodeposition coating has shifted from anionic type to cationic type, and the anticorrosion function has been dramatically strengthened, and cationic type electrodeposition coating is now well established. However, during cationic electrodeposition coating, a reaction occurs on the surface of the material as shown in the following equation. The PH near the surface of the material becomes alkaline (cationic paint) (precipitation) Therefore, in the present invention, we focused on these points, provided a film mainly made of resin that is strong against oil, alkali, and acid, and formed and processed it. The main objective is to improve the corrosion resistance and image clarity of cationic electrodeposition coating materials, and at the same time to prevent the elution of aluminum ions and chromium ions in the zinc phosphate bath. Here, the chromate film (first layer) has a chromium content of Lo
If it is less than 100 mg/m2, it is difficult to obtain sufficient corrosion resistance, and if it is more than 100 mg/m2, it becomes a factor that reduces adhesion and weldability. Therefore, the amount of chromium is 1
It needs to be in the range of 0 to 10c) ng/rn2. Furthermore, if the film (second layer) mainly consists of a resin component, the film thickness is less than 0.1 μm, it is difficult to sufficiently cover the surface of the aluminum material. The elution of ions cannot be prevented, and the corrosion resistance after electrodeposition coating is insufficient. on the other hand,
When the film thickness exceeds 1.0 μm, the porosity of the film decreases, electrode reactions are difficult to occur, and cationic electrodeposition coating becomes difficult. Therefore, the film thickness needs to be in the range of 0.1 to 1.0 μm. In order to obtain a coating mainly made of resin with such oil resistance, alkali and acid resistance, the resin is preferably an acrylic-epoxy resin, and further preferably the resin contains zircon. Of course, it goes without saying that it is not limited to only such resins. Note that the resin composition can be of a water-soluble type (including an emulsion) or a solvent type depending on the manufacturing conditions, but the object of the present invention can be achieved with either type. Further, since the film thickness is as thin as 0.1 to 1 μm, the solid content is preferably 30% by weight or less in order to obtain a porous film. Further, by adjusting the amount of zircon salt added to the resin solid content from several percent to several tens of percent, the porosity, oil resistance, alkali, and acidity of the film can be maintained. Furthermore, the film (second layer) is preferably porous, and the porosity is determined by saline solution (e.g. 1 wt% NaCQ).
The leakage current measured by applying current (for example, voltage 6V) inside the aluminum plate is a guideline, and it is preferable to have a leakage current of at least several mA/dm. It goes without saying that any material may be used as long as it is made of any material, and it goes without saying that the conditions for forming the chromate film are not limited except for the amount of chromium.Next, examples of the present invention will be shown. Example) After normal alkali degreasing of JIS5182 plate material (1, C +++s thickness), chromate treatment was applied as the first layer under the conditions shown in Table 1, and resin was coated as the second layer.
Then, after painting treatment (cationic electrodeposition coating), 150 ~
Baked at 200"C for 1 minute. Chromate treatment was carried out under the conditions of Alsurf 1200 (manufactured by Nippon Paint) at 3 g/Q, and the amount of chromium was adjusted by changing the temperature and time. After applying oil, each sample was processed. The degreasing property, ion elution into the zinc phosphate bath, corrosion resistance after cationic electrodeposition coating, and sharpness were evaluated as follows.The processing was Erichsen test processing (6m+m, close contact bending). The results are also listed in Table 1. 1. Supervision After immersing each sample in a 45°C degreasing bath for 2 minutes, visual inspection was conducted.
I guessed it. ■After immersing each sample of ions into phosphorus in a zinc phosphate bath at 43℃ for 2 minutes,
The elution amounts of aluminum ions and chromium ions were measured. ■Cationic electrodeposition coating (250V x 3 minutes), 175℃ x 2
An electrodeposition coated board was created by baking for 0 minutes. Corrosion resistance was determined by scratching the flat parts and processed parts (Erichsen parts, closely bent parts) of the painted surface, and salt spray test 1 according to JIS Z2371.
000 hours, the maximum corrosion length from scratch (one side) was measured. The image clarity was measured using a PGD meter. From Table 1, the material of the present invention has excellent degreasing properties, has no or almost no elution of aluminum ions and chromium ions into the zinc phosphate bath, and has excellent corrosion resistance after cationic electrodeposition coating.
It can be seen that the image clarity is also excellent. In addition, in these materials of the present invention, when an appropriate amount of zircon salt was contained in the resin of the second layer, the corrosion resistance in particular was further improved.
（発明の効果）
以上詳述したように、本発明によれば、リン酸亜鉛浴中
へのアルミイオン、クロムイオンの溶出が殆どなく、シ
かもカチオン電着塗装後の耐食性、鮮映性に優れている
アルミニウム表面処理材が得られるため、自動車ボディ
パネル材として鋼と組み合せ使用される用途に好適であ
り、工業的効果が大きい。
特許出願人 株式会社神戸製鋼所
代理人弁理士 中 村 尚(Effects of the Invention) As detailed above, according to the present invention, there is almost no elution of aluminum ions and chromium ions into the zinc phosphate bath, and the corrosion resistance and image clarity after cationic electrodeposition coating are improved. Since an excellent aluminum surface treatment material can be obtained, it is suitable for use in combination with steel as an automobile body panel material, and has great industrial effects. Patent applicant Hisashi Nakamura, patent attorney representing Kobe Steel, Ltd.
Claims (3)
０〜１００ｍｇ／ｍ＾２のクロメート皮膜を設け、更に
その上に第２層として０．１〜１．０μｍ厚の耐油、ア
ルカリ、酸性を有する樹脂層を設けたことを特徴とする
自動車用アルミニウム表面処理材。(1) Chromium amount 1 as the first layer on the aluminum plate
Aluminum for automobiles, characterized in that a chromate film of 0 to 100 mg/m^2 is provided, and a resin layer having oil resistance, alkali, and acidity with a thickness of 0.1 to 1.0 μm is provided as a second layer on top of the chromate film. Surface treatment material.
る樹脂である請求項１に記載の自動車用アルミニウム表
面処理材。(2) The aluminum surface treatment material for automobiles according to claim 1, wherein the resin is a resin whose main component is an acrylic-epoxy resin.
させたものを用いる請求項１又は２に記載の自動車用ア
ルミニウム表面処理材。(3) The aluminum surface treatment material for automobiles according to claim 1 or 2, wherein the second layer is made of a resin containing zircon salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097290A JPH049476A (en) | 1990-04-26 | 1990-04-26 | Surface-treating material for aluminum for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097290A JPH049476A (en) | 1990-04-26 | 1990-04-26 | Surface-treating material for aluminum for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH049476A true JPH049476A (en) | 1992-01-14 |
Family
ID=14549167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11097290A Pending JPH049476A (en) | 1990-04-26 | 1990-04-26 | Surface-treating material for aluminum for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH049476A (en) |
-
1990
- 1990-04-26 JP JP11097290A patent/JPH049476A/en active Pending
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