the invention relates to particles for producing a three - dimensional object by using layer - building methods , to methods for producing a three - dimensional object therefrom , and to an object that can be produced by using the particles or the methods . the aim of the invention is to improve the precision of production methods of this type by preventing the tendency of the particles used to agglomerate . to this end , a surfactant layer is applied , whereby the nonpolar groups of the surfactants are oriented toward the particle surface thus forming a hydrophobic surface having a low tendency to agglomerate .