Fintac 4331 HXC High-hydrogenated rosin Finjetchemical Industries Natural Resins & Gum >> Rosin Inks Coatings Fintac4331 is hydrogenated rosin or High-hydrogenated rosin. Llight color, superior heat stability and weather resistance. Used in paint and inks. High-hydrogenated rosin. Used in paint and inks. Possesses light color, very good heat stability and weather resistance.