The present invention relates to a novel photoinitiator system comprising
one or more acylphosphine oxide photoinitiators and one or more lightfast
red, blue or violet organic pigments. Low yellow color formation results
upon curing ethylenically unsaturated compounds with the new
photoinitiator system. Particular applications include clear and white
coatings, screen inks, gel coats, powder coatings, composites, adhesives
and lenses.
