25-04-2013 дата публикации
Номер: US20130102719A1
A dispersion includes a carbonaceous nanoparticle, a dispersant including a graft polymer having a poly(alkylene glycol) side chain, and a polar solvent. An article coated with the dispersion and a method of making the dispersion are disclosed. 1. A dispersion , comprisinga carbonaceous nanoparticle,a dispersant comprising a graft polymer having a poly(alkylene glycol) side chain, anda polar solvent.2. The dispersion of claim 1 , wherein the carbonaceous nanoparticle is a nanographite claim 1 , graphene claim 1 , fullerene claim 1 , nanotube claim 1 , nanodiamond claim 1 , or a combination comprising at least one of the foregoing.3. The dispersion of claim 2 , wherein the nanotube is a single walled carbon nanotube claim 2 , multiwalled carbon nanotube claim 2 , or a combination comprising at least one of the foregoing.4. The dispersion of claim 2 , wherein the carbonaceous nanoparticle is derivatized to have a functional group.5. The dispersion of claim 4 , wherein the functional group includes carboxy claim 4 , epoxy claim 4 , ether claim 4 , ester claim 4 , ketone claim 4 , amine claim 4 , hydroxy claim 4 , alkoxy claim 4 , alkyl claim 4 , aryl claim 4 , aralkyl claim 4 , lactone claim 4 , functionalized polymeric or oligomeric groups claim 4 , or a combination comprising at least one of the forgoing functional groups.6. The dispersion of claim 1 , wherein an average particle size of nanoparticle is 1 nanometer to 5 micrometers.7. The dispersion of claim 1 , wherein the dispersant has a polymeric backbone comprising a polyester claim 1 , a poly(meth)acrylate claim 1 , a polystyrene claim 1 , a poly(styrene-(meth)acrylate) claim 1 , a polycarbonate claim 1 , a polyamide claim 1 , a polyimide claim 1 , a polyurethane claim 1 , a polyvinyl alcohol claim 1 , or a copolymer comprising at least one of these polymeric backbones.8. The dispersion of claim 1 , wherein the poly(alkylene glycol) sidechain has an Mof about 100 to about 50 claim 1 ,000 g/mol.9. The dispersion ...
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