METHOD FOR PRODUCING TITANIUM DIOXIDE PIGMENT

PROBLEM TO BE SOLVED: To provide a titanium dioxide pigment excellent in weather resistance on blending with a coating composition and also having excellent gloss. SOLUTION: This method for producing the titanium dioxide pigment having a silica-treating process of neutralizing a water-soluble silica...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ISOBE KAORU, MURAKI KATSUYOSHI, HORIE HIROOMI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a titanium dioxide pigment excellent in weather resistance on blending with a coating composition and also having excellent gloss. SOLUTION: This method for producing the titanium dioxide pigment having a silica-treating process of neutralizing a water-soluble silicate in an aqueous slurry of the titanium dioxide under at least 70°C temperature within 4.5 to 10.5 pH range for at least 30 min to treat a dense hydrated silica on the surface of the titanium dioxide particles is characterized by comprising a process of adding a water-soluble salt of at least 1 kind of an element selected from aluminum, zirconium, titanium, phosphorus, tin, antimony or zinc corresponding to ≥0.005 wt.% and