	US 11,926,745 B2
	Black inks based on biochar
Guy VanOudenhoven, Menasha, WI (US); Paul Sacoto, Cincinnati, OH (US); Mihaela Madaras, Cincinnati, OH (US); Josie M. Rosen, Carlstadt, NJ (US); and Ralph Arcurio, Carlstadt, NJ (US)
Assigned to Sun Chemical Corporation, Parsippany, NJ (US)
Appl. No. 18/029,751
Filed by SUN CHEMICAL CORPORATION, Parsippany, NJ (US)
PCT Filed Jul. 11, 2022, PCT No. PCT/US2022/036671 § 371(c)(1), (2) Date Mar. 31, 2023, PCT Pub. No. WO2023/287701, PCT Pub. Date Jan. 19, 2023.
Claims priority of provisional application 63/221,153, filed on Jul. 13, 2021.
Prior Publication US 2023/0340284 A1, Oct. 26, 2023
Int. Cl. C09D 11/324 (2014.01); C09D 11/08 (2006.01); C09D 11/38 (2014.01)

CPC C09D 11/08 (2013.01) [C09D 11/324 (2013.01); C09D 11/38 (2013.01)]

18 Claims

1. A water-based liquid black ink composition comprising water, biochar pigment, and a rosin adduct, wherein the rosin adduct has 100% bio-renewable carbon (BRC) content, based on the carbon content of the rosin adduct; wherein the rosin adduct is a 100% BRC rosin adduct that is a rosin ester, prepared by reacting one or more rosin acid monomers and/or dimers with one or more alpha-hydroxy acids; and wherein the water-based liquid black ink composition has a carbon content; and wherein 70% to 100% of the carbon content in the water-based liquid black ink composition is bio-renewable carbon (BRC).