Aqueous composition for metal surface treatment and application thereof

• Main Authors: HUANG JINKAI, SONG MINGJUAN, ZOU HAIXIA, XIA PENG
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2024
• Subjects: ADHESIVES; 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; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to an aqueous composition comprising component (A) 10 to 35% by weight of a hydroxyl-free acrylic resin, the acrylic resin having an average particle size in the range of 50 to 200 [mu] m, measured by dynamic light scattering according to ISO 13321: 2004, component (B) 0.1 to 4% by weight of a film-forming aid, the boiling point of which at 1 atm does not exceed 300 DEG C, component (C) 1 to 8% by weight of a lubricant, and component (D) 0.1 to 4% by weight of a film-forming aid, the film-forming aid having an average particle size in the range of 50 to 200 [mu] m, measured by dynamic light scattering according to ISO 13321: 2004. The lubricant has an average particle size in the range of 100-600 nm, measured by dynamic light scattering according to ISO 13321: 2004, and component (D) 0.1-1% by weight of a water-soluble chromium compound, the weight of which is calculated from chromium element, and the percentage by weight of all components is based on the total weight of the aque