Leather finishing is a chemistry-driven coating process applied on a natural substrate. The final leather performance depends on what solution systems are used (pigment pastes, base coats, top coats, feel modifiers, protective layers) and how stable those systems remain during application and aging.
Carbon black in leather is not simply “black color.” It influences:
iSTAR designs engineered carbon black platforms for leather using: ONYX GEMS®, PLASTEXA®, SPHEREXA®, and VELCROX®.
What Each Platform is Engineered to Deliver
premium jetness, undertone control, shade consistency
binder compatibility, paste stability, rheology control, clean processing
smoothness, feel, flow/ leveling, reduced bronzing and surface defects
durability reinforcement, abrasion resistance, flex endurance
Leather finishing failures are often caused by small dispersion or rheology instabilities that create visible defects. iSTAR’s engineered carbon blacks help finishers achieve:
Leather is a surface-engineered product. iSTAR’s carbon black platforms enable consistent premium black aesthetics, stable coating behavior, and long-term durability across pigment pastes, base coats, top coats, and protective layers.