Feedstock and method for preparing the feedstock

US9034210B2 · kind B2 · utility

Assignee

• EPCOS AG · DE

Inventors

• Jan Ihle · Grambach, AT
• Verena Fischer · Schwanberg, AT
• Karin Hajek · Bornheim, DE
• Gerd Scheiwe · Rheinbach, DE
• Thomas Haferkorn · Ingelheim am Rhein, DE
• Moritz V. Witzleben · Cologne, DE

Key dates

• Filing date: Dec 5, 2007
• Grant date: May 19, 2015
• Expiry date: Dec 5, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B2203/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A feedstock for injection molding includes a ceramic filler that is sinterable to produce a ceramic with a positive temperature coefficient of electrical resistance, a matrix for binding the ceramic filler, the matrix having a melting point lower than a melting point of the ceramic filler, and metallic impurities. A content of the metallic impurities in the feedstock is lower than 10 ppm.