| 摘要 |
<p>A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3νmoles/M2. Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided.</p> |
