ONE-COMPONENT TYPE THERMOSETTING COMPOSITION FOR APPLYING ADDITIONAL TOP COAT THEREON AND METHOD FOR COVERING AND COATING STEEL SHEET BONDED STRUCTURE USING THE SAME

• Main Authors: MORIYA MASAHIRO, KIKUCHI MASAKAZU
• Format: Patent
• Language: English
• Published: 02.09.2010
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; 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; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a one-component type thermosetting composition for applying additional top coat thereon successfully filling and covering the gap portion of the bond part of the steel plate of the steel sheet bonded structure with good workability, readily hardened without foaming upon heating, without becoming softened during baking of coating at higher temperature, giving a hardened article excellent in hardness, appearance, adhesiveness, anti-corrosion property, and storage stability; and to provide a method for coating and painting a steel sheet bonded structure using the same. SOLUTION: This one-component type composition for applying additional top coat thereon includes an isocyanate-containing urethane prepolymer (A), a compound (B) having an oxazolidine ring, a hardening promoter (C), and a thixotropic agent (D) containing at least a polyurea compound. The method for covering and coating a steel sheet bonded structure utilizes the composition. COPYRIGHT: (C)2010,JPO&INPIT