One-component powder coating composition and substrate coated with powder coating composition

• Main Authors: KITTLE KEVIN JEFFREY, GONZALEZ ALVAREZ MARIA JOSE
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to a one-component powder coating composition comprising a curable resin and one or more curing additives for curing the curable resin wherein the powder coating composition comprises: a single powder coating component comprising a curable resin and one or more curing additives; and in the range of 1.0 to 20% by weight of a dry-blended inorganic particulate additive consisting of inorganic components i), ii) and iii), where component i) is uncoated alumina or uncoated silica, component ii) is aluminum hydroxide and/or aluminum hydroxide oxide, component iii) is silica, where if component i) is uncoated silica, component iii) does not comprise uncoated silica, and if component i) is uncoated silica, component iii) does not comprise uncoated silica. Wherein the dry-blended inorganic particulate additive comprises an inorganic component iii) in the range of 50 to 99 wt%, where the wt% of the dry-blended inorganic additive is based on the weight of the single powder coating component