Method and apparatus for surface chemical functionalization of powders and nanoparticles
US9994683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Nov 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus is provided for the modification of the surface chemistry of solid nano- and micro-particles in order to tailor the properties and functions of these particles. The method generally involves the generation of an atmospheric plasma glow discharge and energetic species that undergo chemical reaction with the surface of the primary particles. The process includes the generation of energetic species to initiate reaction, optional delivery of a precursor fluid, optional delivery of chemical species for grafting, and delivery of separated and de-agglomerated particles into the plasma discharge exiting the plasma generation chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.