Ppg Industries Ohio, Inc.

Qemetica S.a.

Qi Ding

Cynthia Kutchko

Michael J Pawlik

Nathan J Silvernail

Jonathan G Weis

Lucas Dos Santos Freire

Matthew William Skinner

Samuel L Esarey

Caitlyn B Neidig

Larry J Ruffaner

Shuyang Pan

Inanllely Y Gonzalez

Pawel M Krys

Hyun Wook Ro

Graphenic carbon nanoparticles that are dispersed in solvents through the use of dispersant resins are disclosed. The graphenic carbon nanoparticles may be milled prior to dispersion. The dispersant resins may comprise a polymeric dispersant resin comprising an addition polymer comprising the residue of a vinyl heterocyclic amide, an addition polymer comprising a homopolymer, a block (co)polymer, a random (co)polymer, an alternating (co)polymer, a graft (co)polymer, a brush (co)polymer, a star (co)polymer, a telechelic (co)polymer, or a combination thereof. The solvents may be aqueous, non-aqueous, inorganic and/or organic solvents. The dispersions are highly stable and may contain relatively high loadings of the graphenic carbon nanoparticles.

Dispersions containing graphenic carbon nanoparticles and dispersant resins

Composite particles may be produced by drying slurries containing silica particles and graphenic carbon particles in a liquid carrier. Elastomeric formulations comprising a base elastomer composition and the silica-graphenic carbon composite particles are also disclosed. The formulations possess favorable properties such as increased stiffness and are useful for many applications such as tire treads.

Silica-graphenic carbon composite particles and elastomeric materials including such particles

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Allison Park, PA, United States of America

Qi Ding