The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2016
Filed:
Mar. 14, 2013
Harald Haeger, Luedinghausen, DE;
Roland Wursche, Duelmen, DE;
Sylvia Anita Hermasch, Marl, DE;
Lothar Jakisch, Zwickau, DE;
Beate Krause, Melssen, DE;
Petra Poetschke, Dresden, DE;
Robert Socher, Mannheim, DE;
Harald Haeger, Luedinghausen, DE;
Roland Wursche, Duelmen, DE;
Sylvia Anita Hermasch, Marl, DE;
Lothar Jakisch, Zwickau, DE;
Beate Krause, Melssen, DE;
Petra Poetschke, Dresden, DE;
Robert Socher, Mannheim, DE;
Evonik Degussa GmbH, Essen, DE;
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.