Powder comprising polymer-coated inorganic particles

US9428610B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Wolfgang Diekmann · Waltrop, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Maik Grebe · Bochum, DE
• Kristiane Warnke · Recklinghausen, DE
• Sylvia Monsheimer · Haltern am See, DE

Key dates

• Filing date: Jun 27, 2012
• Grant date: Aug 30, 2016
• Expiry date: Feb 2, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

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.