Polyamide-based polymer powder, use thereof in a molding method, and molded articles made from said polymer powder

US10406745B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Franz-Erich Baumann · Schneverdingen, DE
• Wolfgang Diekmann · Waltrop, DE
• Beatrice Kueting · Marl, DE
• Heike Stemmer · Haltern am See, DE
• Maik Grebe · Bochum, DE
• Kristiane Warnke · Recklinghausen, DE
• Sylvia Monsheimer · Haltern am See, DE
• Harald Haeger · Thedinghausen, DE

Key dates

• Filing date: Oct 13, 2017
• Grant date: Sep 10, 2019
• Expiry date: Oct 13, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Disclosed herein is a polymer powder containing a polyamide of AB type, produced by polymerizing at least one lactam having from 10 to 12 carbon atoms in a monomer unit or by polycondensing at least one corresponding ω-aminocarboxylic acid having from 10 to 12 carbon atoms in a monomer unit, and a polyamide of AABB type, produced by polycondensing at least one diamine and at least one dicarboxylic acid having respectively from 10 to 14 carbon atoms in monomer units. The polyamide of the AB type and the polyamide of the AABB type are prepared separately and then coprecipitated to form the polymer powder, and the polymer powder is a physical mixture of the polyamide of the AB type and the polyamide of the AABB type. Also disclosed herein is a method for producing the polymer powder.