When using a high surface area carbon black pigment, how do I increase the jetness?
With high surface area carbon black pigments, the particles that require stabilising are very small, so usually a polymeric dispersant can help to do this and thus increase the intensity or ‘jetness’ of the coating. As well as using a specific dispersant, the dispersion time can also be critical, with carbon black pigments requiring longer dispersion times than organic or inorganic pigments. The jetness can be further enhanced by using a ‘synergist’ agent, which coats the pigment particle and increases the polarity of the surface for greater charge stabilisation. For more info, contact us via TechDirect.
