AQUEOUS COATING COMPOSITION AND CORROSION PREVENTION METHOD USING SAID AQUEOUS COATING COMPOSITION

• Main Authors: ENDO, ISAO, OKADA, MASAMITSU
• Format: Patent
• Language: English; French; Japanese
• Published: 22.03.2012
• 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; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; 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; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

[Problem] To provide an aqueous coating composition that, even while using water as the diluting solvent, can form a coating film having well-balanced, superior drying properties, curing properties, and coating film properties (coating film strength) virtually equivalent to those of coating films formed from conventional solvent coating compositions having an organic solvent as the diluent. [Solution] The aqueous coating composition contains: a binder (A) containing a hydrolysis condensate obtained by means of subjecting a particular silane compound (a1) to a hydrolysis reaction and a condensation reaction in the conditions of a pH of 0.4-8.0; and water (B). La présente invention concerne une composition de revêtement aqueuse qui, même en utilisant de l'eau comme solvant de dilution, peut former une pellicule protectrice ayant des propriétés de séchage, des propriétés de durcissement, et des propriétés de pellicule protectrice (résistance de pellicule protectrice) supérieures et bien équilibrées, pratiquement équivalentes à celles de pellicules protectrices formées à partir de compositions de revêtement classiques ayant un solvant organique comme diluant. La composition de revêtement aqueuse contient : un liant (A) contenant un condensat d'hydrolyse obtenu en soumettant un composé de silane particulier (a1) à une réaction d'hydrolyse et à une réaction de condensation dans des conditions de pH 0,4 à 8,0 ; et de l'eau (B).