MCC Golfballs - a new eco-friendly matting agent for emulsion paints

 
This paper presents development and properties of a matting agent for emulsion paints, based on patented Modified Calcium Carbonate Technology. Dead matt paint surfaces are caused by a certain micro-roughness which scatters light and so reduces specular reflection. It is possible to reach this target with coarse calcium carbonates, however high amounts are needed to provide a uniform surface appearance. Intensive studies of matting mechanisms finally led to golf ball shaped particles which show comparable or better performance as matting agents like eg diatomaceous earth. This new functional filler contributes to the development of advanced coatings based on calcium carbonate instead of silicates.