SURFACE-TREATED METAL MATERIAL AND METAL SURFACE TREATMENT AGENT

• Main Authors: FUDA MASAHIRO, FUJITA SOSHI, MORISHITA ATSUSHI, KOSUGE HIROSHI, KANEFUJI YASUHEI, TAWA TSUTOMU
• Format: Patent
• Language: English
• Published: 25.02.2010
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; 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; PERFORMING OPERATIONS; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a metal surface treatment agent that solves problems of corrosion resistance, corrosion resistance after processing, adhesion of a finish coat painting, alkali resistance and solvent resistance by finding a polyurethane resin structure and an additive that can derive polyurethane resin characteristics to the utmost as the surface treatment agent substitutable for chromate treatment, and to provide a surface-treated metal material. SOLUTION: This surface treatment agent includes polyurethane resin that contains a functional group (a) represented by general formula [1] (wherein R1, R2 and R3 are each independently alkoxy or hydroxy), and silicon oxide. The polyurethane resin further can contain a specific functional group (b) and a urea bond. The total amount of the functional groups (a) and (b), and the silicon oxide is within a specific range. The surface treatment agent can contain a specific crosslinking agent. The surface treated metal material is manufactured by coating the surface treatment agent on the surface of the metal material, baking and drying it. COPYRIGHT: (C)2010,JPO&INPIT