Thermoplastic composition comprising a compatibilized polyphenylene ether- polyamide base resin and electroconductive carbon black

• Main Authors: FORTUIJN, JOHANNES EVERARDUS, WAGENAAR, JAN, LOHMEIJER, JOHANNES HUBERTUS GABRIEL MARIE
• Format: Patent
• Language: English; French; German
• Published: 06.12.1995
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention deals with a thermoplastic composition comprising (a) a compatibilized polyphenylene ether-polyamide base resin, and (b) 1-7 parts by weight per 100 parts by weight of (a) of an electroconductive carbon black, with an Izod notched impact strength of more than 15 kJ/m and a volume resistivity of less than 10 Ohm.cm. The compositions of the invention are suitable for molding objects which can easily be painted by an electrostatic coating process. The invention further provides a process for the preparation of the composition of the invention comprising at least two steps. In the first step the base resin is formed. In a further step the carbon black is incorporated in the base resin. The invention further relates to articles formed out of the composition of the invention and to such articles which have been painted by an electrostatic coating process.