Titanium dioxide pigment and method for producing the same
AssigneeSakai Chemical Industry Co., Ltd.
InventorsKazunobu Abe, Kazumi Sugimoto, Atsuki Terabe, Masaru Mikami
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AssigneeSakai Chemical Industry Co., Ltd.
InventorsKazunobu Abe, Kazumi Sugimoto, Atsuki Terabe, Masaru Mikami
Estimating the term…
The invention provides a titanium dioxide pigment particle inhibited in photocatalytic activity and reduced in amount of volatile water which has on the surface a composite compound of alkaline earth meta complexed with the titanium dioxide in an amount of 0.1-20% by weight based on the weight of the titanium dioxide pigment particle in terms of oxide of the alkaline earth metal, wherein the composite compound is obtained by heating a compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with the titanium dioxide on the surface of the titanium dioxide pigment particle.
A titanium dioxide pigment particle having on the surface a composite compound of alkaline earth metal complexed with the titanium dioxide in an amount of 0.1-20% by weight based on the weight of the titanium dioxide pigment particle in terms of oxide of the alkaline earth metal, wherein the composite compound is obtained by heating a compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with the titanium dioxide on the surface of the titanium dioxide pigment particle.
A method for producing a titanium dioxide pigment particle which comprises heating a compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with the titanium dioxide to form a composite compound on the surface of the titanium dioxide particle in an amount of 0.1-20% by weight based on the weight of the titanium dioxide pigment particle in terms of oxide of the alkaline earth metal.
Dependencies are inferred from the claim text.