CATIONIC ELECTRODEPOSITION PAINT COMPOSITION

PURPOSE:To provide the title compsn. which has excellent handleability and electrodepositability and gives a coating film having excellent hardness, appearance and resistance to corrosion, weather and chemicals, consisting of a specified acrylic copolymer and a melamine resin or a benzoguanamine res...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: AKAGI SUSUMU, MOROZUMI KENICHI, TOGO MASAYUKI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To provide the title compsn. which has excellent handleability and electrodepositability and gives a coating film having excellent hardness, appearance and resistance to corrosion, weather and chemicals, consisting of a specified acrylic copolymer and a melamine resin or a benzoguanamine resin. CONSTITUTION:3-30wt% acrylic monomer (a) contg. basic nitrogen, pref. an acrylic monomer having an amino group (e.g., dimethylaminoethyl methacrylate) is copolymerized with 0-10wt% ethylenically unsaturated org. carboxylic acid and/or sulfonic acid (b) (e.g., acrylic acid), 3-30wt% acrylic monomer (c) having a hydroxyl group (e.g., hydroxyethyl acrylate) and 30-90wt% ethylenically unsaturated monomer (d) copolymerizable with the components (a), (b) and (c) to obtain an acrylic copolymer (A). If desired, the copolymer is neutralized to obtain the neutralized acrylic copolymer (A). 40-90pts.wt. component A is blended with 10-60pts.wt. melamine resin or benzoguanamine resin (B) having a group of formulas I and II or III (wherein R , R and R are each a 1-4C alkyl; and R , R and R are each a 1-4C alkylene).