US Patent 7279247 Carbon nanotube pastes and methods of use

Dispersable pastes comprising single-walled carbon nanotubes (SWNT) in water or in an organic solvent are prepared. The method of preparing the dispersable pastes comprises in general the following steps: a) removal of the catalyst used during the synthesis of SWNT; b) while the SWNT are still wet, addition of the appropriate amount of solvent, in a solvent/SWNT ratio which preferably varies between 30:1 and 100:1, depending on the desired viscosity of the paste; and c) high-energy horn sonication with a dismembrator probe.