Polyamide composition containing electrically conductive carbon

US9312043B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Harald Haeger · Thedinghausen, DE
• Roland Wursche · Schneverdingen, DE
• Sylvia Anita Hermasch · Marl, DE
• Lothar Jakisch · Zwickau, DE
• Beate Krause · Overath, DE
• Petra Poetschke · Dresden, DE
• Robert Socher · Mannheim, DE

Key dates

• Filing date: Mar 14, 2013
• Grant date: Apr 12, 2016
• Expiry date: Aug 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2201/011
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polyamide composition which provides moldings having a significantly reduced percolation threshold and an improved electrical conductivity is provided. The composition contains a) at least 40 parts by weight of a polyamide; b) from 0.15 to 25 parts by weight of an electrically conductive carbon; c) from 0.3 to 8 parts by weight of an oligofunctional compound; and, optionally, d) conventional auxiliaries and additives, wherein the electrically conductive carbon comprises at least one of carbon nanotubes and graphene, the oligofunctional compound comprises at least one functional group reactive with reactive groups on a surface of the electrically conductive carbon and at least one functional group reactive with an end group of the polyamide, and the sum of the parts by weight of the components a) to d) is 100.