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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 Applications

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

Typical Properties


N/A PL Industries

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

Viscosity @ 25 ºC (cps)

N/A 1000 to 3000

Boiling Point

N/A > 250 ºC

Specific Gravity

N/A 1.19


N/A Faint, characteristic

Usage Levels

N/A 4 to 12 %