De-inkable inks with high bio-renewable content
AssigneeSun Chemical Corporation
InventorPaul Wallace
Life of this patent
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Abstract
The present invention relates to a printing ink composition comprising one or more keratin-based pigment(s) and water, wherein the one or more keratin-based pigment(s) has an average particle size of no more than 3000 nm.
Claims23
A printing ink composition comprising one or more keratin-based pigment(s) and water, wherein the one or more keratin-based pigment(s) has an average particle size of no more than 3000 nm, wherein average particle size is Dv50 measured by dynamic light scattering wherein the keratin-based pigment(s) are milled.
A method of preparing a printing ink composition comprising one or more keratin-based pigment(s) and water, wherein the one or more keratin-based pigment(s) has an average particle size of no more than 3000 nm, said method comprising milling a dispersion comprising water and one or more keratin-based pigment(s), wherein average particle size is Dv50 measured by dynamic light scattering.
Dependencies are inferred from the claim text.