| 摘要 |
The present disclosure relates to a process for making a titanium dioxide pigment comprising a thermally treated titanium dioxide having an inorganic surface treatment of comprising a source of phosphorus, typically phosphoric acid, and a source of aluminum, typically sodium aluminate, wherein the pigment is characterized by an isoelectric point which is greater than pH 6 and a negative zeta potential of at least 20 mV at a pH of 7.5 or more and wherein the pigment has improved light fastness.
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