Resin-coated metal sheet with good workability and heat resistance

• Main Authors: WATASE, TAKESHI, KAJITA, TOMIO, OKUMURA, KAZUO, KIHARA, ATSUSHI, NAKAMOTO, TADASHIGE
• Format: Patent
• Language: English
• Published: 21.02.2003
• Edition: 7
• 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

A resin-coated metal sheet with good workability and heat resistance wherein the resin coating layer comprises a matrix resin having in the molecule at least either active hydrogen or functional groups, an organic lubricant, and two crosslinking agents capable of reacting with the matrix resin. The first crosslinking agent reacts with the matrix resin to such an extent as to impart sufficient scratch resistance. In the final high-temperature short-time baking step, the second crosslinking agent remaining intact crosslinks the resin coating layer, making it compact and preventing it from getting soft. Thus it is possible to make workability and heat resistance compatible with each other.