A thermosetting synthetic resin composition consisting mainly of, for example, an epoxy resin is melted at a temperature of 70.degree. to 130.degree. C. After adding a filler to the resin composition, the resultant mixture is kneaded and rapidly cooled. The composition consists of a thixotropy agent,...http://www.google.es/patents/US4624884?utm_source=gb-gplus-sharePatente US4624884 - Heat radiating insulation for coil
