CoreBlack™ BiS is a bismuth sulfide (BiS)-based functional black additive designed for coatings and plastics where you want strong blackness and clean processing without relying on conventional carbon black loading. It is built for manufacturers who need stable tone, controllable viscosity, and repeatable dispersion across different binder systems.

Compared with “high-structure” carbon blacks that can spike viscosity or cause conductivity/migration concerns, CoreBlack™ BiS is positioned as a contrast-building black for decorative and functional systems—helping you reach deep tone with predictable formulation behavior.

Typical positioning

• Coatings: deep black tone, stable shade control, compatibility with common resin families.
• Plastics: black coloration and tone tuning in compounds/masterbatches where process stability matters.

Supply note: Final performance depends on binder, dispersant package, and shear history. Kela can provide application guidance and recommended starting dosages for your system upon request.