AQUEOUS HYDROPHOBIC SILICA DISPERSIONS

The invention relates to an aqueous hydrophobic silica dispersion, an aqueous coating composition, a substrate coated With one or more layers of the aqueous coating composition, a method for preparing an aqueous hydrophobic silica dispersion, and a method for preparing a coating composition. The aqu...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TIANQI LIU, TAKASHI UMEHARA, MELISSA J. MONELLO, ZHANGLIANG GUI, KAVITA K. PAI, ANGELICA M. SANCHEZ GARCIA, LANG H. NGUYEN, STEVEN JACOBS
Format:	Patent
Sprache:	eng
Schlagworte:	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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to an aqueous hydrophobic silica dispersion, an aqueous coating composition, a substrate coated With one or more layers of the aqueous coating composition, a method for preparing an aqueous hydrophobic silica dispersion, and a method for preparing a coating composition. The aqueous hydrophobic silica dispersion comprises a mixture of: - an aqueous base dispersion comprising at least 5 wt% of a hydrophilic particulate silica selected from the group consisting of fumed silica, colloidal silica, and precipitated silica; - hydrophobic silica comprising a particulate silica selected from the group consisting of fumed silica, colloidal silica, silica aerogel, and precipitated silica, the hydrophobic silica having a methanol number of at least 60; and - a dispersant having at least one cationic or cationizable group and an HLB ratio of2 to 20, wherein the total amount of particulate silica in the dispersion is at least 15% by weight.