COATING COMPOSITIONS COMPRISING HOLLOW SILICA PARTICLES WITH LOW POROSITY

• Main Authors: DUNCAN, ANDREW JAY, CROWTHER JR, JOHN A, BARNEY, NATHANIEL A, LASIO, JELENA, ROSEN, BRAD M, LEE, HAU-NAN
• Format: Patent
• Language: English; French
• Published: 17.09.2015
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; 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 BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR 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; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; PREPARATION OF CARBON BLACK; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

The disclosure provides a coating composition having improved opacity comprising a titanium dioxide (TiO2) particle chemically attached to a hollow particle, wherein the hollow particle's size has a volume ratio when compared to the titanium dioxide particle of between 0.008 and 8. These coating compositions comprise inorganic hollow particles which are useful as hiding or opacifying agents. L'invention concerne une composition de revêtement ayant une opacité améliorée comprenant une particule de dioxyde de titane (TiO2) liée chimiquement à une particule creuse, la taille de la particule creuse ayant un rapport en volume par rapport à la particule de dioxyde de titane compris entre 0,008 et 8. Les compositions de revêtement selon l'invention renferment des particules creuses inorganiques qui sont utiles en tant qu'agents masquants ou opacifiants.