Examining the efficiency of TiO2 in matt paints & methods of obtaining optimal dry opacity without sacrificing wet hideals

 
FP-Opacity Pigments have become an established and proven way to optimise and/or reduce TiO2 use in matt paints without compromise to dry opacity and mechanical properties. Optimising the levels of TiO2 for dry opacity in paints often comes at the price of lower wet opacity. This often-critical property is usually assessed visually, a subjective test depending on the operator and environmental factors - lighting, time, humidity etc. This paper will outline a method developed within FP-Pigments that allows for a more accurate evaluation of wet opacity and thus demonstrate the importance of the TiO2 levels on this fundamental coatings property. This paper will also discuss technical developments within FP- Pigments that offer the paint formulator a "third way" to develop higher opacity coatings with existing levels of TiO2 thus maintaining wet hide performance. This new method of utilising optimised TiO2 opens the doors to potentially thinner films and lower carbon footprints.