Patent ID: 9527133
Filing Date: 2016-12-27
CPC Classification: B22F,B82Y

Claim Text:
1. A process for the formation of substantially oxide-free fine particles comprising a core and a coating, wherein the coating comprises one or more polymeric compounds; the process comprising: introducing a core material into a plasma stream thereby vaporising some or all of the core material; cooling the core material downstream from where the core material was introduced, thereby creating particles of the core material; injecting the polymeric compounds into an injection zone; and coating particles of the core material with the polymeric compounds in the injection zone; wherein the polymeric compounds are injected in an inert gas stream into the injection zone at the closest proximity within the plasma stream to the point of formation of the core material where the temperature is below the decomposition/pyrolysis point of the coating material, and wherein the injection zone is downstream of a region where the particles of core material are formed.