AQUEOUS RESIN COMPOSITION FOR METAL SURFACE TREATING AGENT

• Main Authors: NAKAMURA KATSUYOSHI, SHIGEMATSU YASUHIRO
• Format: Patent
• Language: English
• Published: 30.11.2006
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide an aqueous resin composition for metal surface treating agents, using together with neither chromium-based compound nor various antirust pigment but excellent in corrosion resistance. SOLUTION: The aqueous resin composition for metal surface treating agents comprises a carboxy-containing aqueous urethane resin (I) and an aqueous vinyl modified epoxy ester resin (II), wherein, preferably, the carboxy-containing aqueous urethane resin (I) is a polyesterurethane resin obtained from a polyester polyol (A) composed of acid components comprising an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid and having ≥50 wt.% aromatic dicarboxylic acid content based on the acid components, an isocyanate compound (B) and a chain extender (C) containing a glycol component (A-3) having carboxy in a molecule. COPYRIGHT: (C)2007,JPO&INPIT