Powder comprising polymer-coated inorganic particles
AssigneeEvonik Degussa GmbH
InventorsWolfgang DIEKMANN, Franz-Erich Baumann, Maik Grebe, Kristiane Warnke, Sylvia Monsheimer
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Abstract
Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d50 median diameter of the core particles is from 1 to 70 μm and wherein the core particle is an inorganic material which does not include titanium dioxide are provided. A method to prepare the particles includes dissolution of a polymer in a solvent and precipitation of the polymer in the presence of a suspension of the core particles. Further provided is a layer by layer moulding process employing the composite particles and mouldings obtained therefrom.
Claims21
A powder, comprising composite particles:
- wherein the composite particles, comprise:
- an inorganic core particle having a d50 median diameter of from 1 to 70 μm;
- and
- at least a partial coating of a polymer on the core;
- wherein the inorganic core particle material does not include titanium dioxide, and
- a melting point of the coating polymer is obtainable when the polymer is exposed to an electromagnetic energy.
Dependencies are inferred from the claim text.