Titanium dioxide pigment and method for production thereof
AssigneeIshihara Sangyo Kaisha, Ltd.
InventorsHideo Takahashi, Eiji Yamada, Toshihiko Akamatsu, Takeshi Fujimura
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Abstract
The titanium dioxide pigment of this invention has on the titanium dioxide particle surface a coating layer comprising a polyhydric alcohol and a hydrolysis product of an aminosilane compound, has a dispersibility of not more than 20 kg/cm2 as judged in terms of resin pressure increase, and is excellent in hydrophobicity and dispersibility. The pigment is useful as a coloring agent for plastics which requires good lacing resistance and dispersibility.
Claims9
A titanium dioxide pigment which comprises titanium dioxide particles having a coating layer comprising a polyhydric alcohol and a hydrolysis product of an aminosilane compound, wherein the dispersibility of the pigment is not more than 20 kg/cm2 as judged in terms of resin pressure increase.
Dependencies are inferred from the claim text.