Anti-corrosion titanium dioxide pigments

• Main Authors: SU, Quan, GOPARAJU, Venkata Rama Rao
• Format: Patent
• Language: English
• Published: 20.06.2024
• 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 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NATURAL RESINS; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PREPARATION OF CARBON BLACK; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

An anti-corrosion pigment for use in an aqueous-based coating composition is provided herein. The anti-corrosion pigment disclosed comprises a plurality of titanium dioxide particles; in the range of from about 0.05% by weight to about 1% by weight, based on the total weight of the pigment, of at least one non-volatile, organic hydroxyl amine deposited on the surfaces of the titanium dioxide particles; and in the range of from about 0.02% by weight to about 1% by weight, based on the total weight of the pigment, of at least one organic dispersant deposited on the surfaces of the titanium dioxide particles. The pigment is in dry form. An aqueous-based coating composition, a method of forming a dry anti-corrosion pigment for use in an aqueous-based coating composition, and a method of forming an aqueous-based coating composition are also provided.