SURFACE-TREATED METAL MATERIAL AND METAL SURFACE TREATING AGENT

• Main Authors: ATSUSHI MORISHITA, HIROSHI KANAI, TSUTOMU TAWA, MASAHIRO FUDA, HIROSHI KOSUGE
• Format: Patent
• Language: English; Spanish
• Published: 12.02.2009
• 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; 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; 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; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

Disclosed is a surface-treated metal material having a coating film containing at least a polyurethane resin and silicon oxide on at least a part of the surface of a metal material. The polyurethane resin has a urea bond and one or more of a siloxane bond, a dehydration condensation bond of a silanol group and another functional group, and a silanol residue. The total amount of silicon-containing compounds relative to the solid content of the coating film is not less than 1.6% by mass but not more than 25% by mass in terms of silicon, and the total amount of the urea bonds and urethane bonds relative to the total resin content is not less than 0.1% by mass but not more than 10% by mass in terms of nitrogen atomic weight. Also disclosed is a metal surface treating agent for obtaining such a coating film. Se describe un material de metal tratado superficialmente, que tiene una película para revestimiento que contiene por lo menos una resina de poliuretano y óxido de silicio sobre por lo menos una parte de la superficie de un material de metal. La resina de poliuretano tiene un enlace de urea y uno o más de un enlace de siloxano, un enlace de deshidratación-condensación de un grupo silanol y otro grupo funcional, y un residuo de silanol. La cantidad total de compuestos que contienen silicio en relación con el contenido sólido de la película para revestimiento no es menor que 1.6% según la masa, pero no mayor que de 25% según la masa en términos de silicio, y la cantidad total de enlaces de urea y enlaces de uretano en relación con el contenido total de resina no es menor que 0.1% según la masa, pero no mayor que 10% según la masa en términos de peso atómico de nitrógeno. También se describe un agente de tratamiento superficial de metales para obtener tal película para revestimiento.