Electrically conducting solid plastics

US5057370A · kind A · utility

Assignee

• Rohm GmbH Chemische Fabrik · DE

Inventors

• Manfred Krieg · Darmstadt, DE
• Armin Meyer · Belfaux, CH
• Winfried Wunderlich · Roßdorf, DE
• Rainer Friederich · Biebesheim, DE

Key dates

• Filing date: Mar 29, 1990
• Grant date: Oct 15, 1991
• Expiry date: Mar 29, 2010

Classification

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

Abstract

The invention relates to electrically conducting solid plastics, the conductivity of which is attributable to their containing finely divided particulate, conducting substances. The electrically conducting solid plastics are comprised of or contain a polymer such as polymethyl methacrylate having a discrete fine-particle structure, and the polymer particles of the polymer are "doped", at least on their surface, with at least one electrically conducting substance such as carbon black in an amount which establishes electrical conductivity. The conducting substance(s) are present in the form of a plurality of conducting particulate solid bodies, and wherein the condition is imposed that the glass temperature (Tg) of the polymer is not exceeded when the conducting substance is mixed with the polymer particles.