PL-BLK is a liquid photoinitiator compound developed specifically for black inks and coatings. It provides an optimum balance between surface cure and through cure to enable the best possible adhesion in these systems. Because of its optimum viscosity, it can be used in flexo, screen and paste inks without negatively effecting rheology. It is also well suited as a press side additive for the printer

PL-BLK is soluble in most monomers, oligomers and pre-polymers. It is insoluble in H2O.
Unit of Measure

Typical Properties

Viscosity @ 35 ºC (cps)

N/A 10000 to 45000

Specific Gravity

N/A 1.08

Performance Properties

N/A Cures high density black inks Easy to use liquid Excellent through and surface cure Very fast curing


N/A Pale yellow liquid

Boiling Point

N/A > 250 ºC


N/A Faint, characteristic

Usage Levels

N/A 4 to 12 %

Typical Applications

N/A Dense black and very dark pigmented inks and coatings