Different types of titanium dioxide—such as those with alkaline, acidic, or neutral surfaces—require different surface treatments, such as modification with Al₂O₃, SiO₂, or ZrO₂, or, in some cases, organic modification. Selecting the appropriate wetting and dispersing agent is crucial; it must be compatible with the resin, and its pigment-affinity groups must be able to interact with the surface-modified groups. If titanium dioxide of different grades or from different manufacturers is available, we recommend using titanium dioxide with the same surface treatment in the same coating.

 

For Al₂O₃-treated titanium dioxide, we recommend Tech-5011 and Tech-5811; for SiO₂-treated titanium dioxide, we recommend Tech-5155 or Tech-6013.

 

While the products mentioned above deflocculate and stabilize titanium dioxide, they also increase the tendency for precipitation; therefore, it is advisable to use anti-settling additives in conjunction with them during grinding.