Kuleformede, fargede polyesterpartikler, fremgangsmÕte for fremstilling derav og deres anvendelse for pulverlakker

摘要

The invention relates to homogeneously colored polyester particles having a mean particle size <50 mum and a monomodal particle size distribution with a span (=d90-d10/d50)<=2.5, which can be melted at temperatures <200° C. to form a continuous coating, to a process for their preparation and to their use for powder coatings.In a preferred embodiment the particles comprise units of formulae (1) and (2)whereX is a substituted or unsubstituted C6 to C14 aromatic radical or an alkylene, polymethylene, cycloalkane or dimethylene-cycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group andD is an alkylene, polymethylene, cycloalkane or dimethylene-cycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group.