The invention relates to a composite powder having microstructured particles having inhibiting calcium carbonate, obtainable by a method wherein large particles are connected to small particles, wherein the large particles have an average particle diameter in the range from 0.1 µm to 10 mm, the large particles comprise at least one polymer, the small particles are arranged on the surface of the large particles and/or inhomogeneously distributed within the large particles, the small particles comprise calcium carbonate particles, the small particles have an average particle size in the range from 0.01 µm to 1.0 mm, wherein the small particles are obtainable by a method wherein calcium carbonate particles are coated with a composition that comprises at least 0.1 wt% of at least one weak acid, based on the total weight thereof. Preferred application areas of the composite powder comprise the use thereof as an additive, in particular as a polymer additive, as an additive material or starting material for compounding, for the production of components, for applications in medical technology and/or in microengineering and/or for the production of foamed objects. The subject matter of the invention is therefore further components, obtainable by selective laser sintering of a composition, comprising a composite powder according to the invention, except implants for applications in the field of neurosurgery, oral surgery, jaw surgery, maxillofacial surgery, neck surgery, nose and ear surgery, and hand, foot, thoracic, rib, and shoulder surgery.
