| 摘要 |
<p>The present invention relates to a TiO2 pigment coated sequentially in a wet treatment process with hydrous silica and hydrous alumina both in the presence of citric acid wherein the resulting pigment is coated with from 1 to 4% amorphous alumina based on the weight of the untreated TiO2 from 3 to 6% silica glass based on the weight of the untreated TiO2.</p> |
