Low viscosity stable aqueous dispersion of graft carbon black
AssigneeBattelle Memorial Institute
InventorsVan T. Nguyen, Gunter Bellmann, Francoise Boussel
Life of this patent
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Abstract
Aqueous dispersion of carbon black grafted with hydrophilic monomers such as alkali or ammonium carboxylate bearing polymers. The dispersion has a viscosity of about 2 to about 30 cP for a carbon black content of about 1-15% by weight.
Claims22
A stable aqueous dispersion or suspension of carbon black the particles of which are grafted with chemically bonded water soluble polyolefinic chain residues selected from alkali metal and ammonium polyacrylates the dispersed carbon black solid content of which is from about 5 to 15% by weight and the viscosity is from about 2 to 30 cP at room temperature.
Dependencies are inferred from the claim text.