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US 4,054,719 AGranted
Phenacyl ester photosensitizers for radiation-curable coatings
AssigneeAmerican Cyanamid Company
InventorWilliam Frederick Cordes, III
Life of this patent
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Abstract
An ultraviolet radiation-curable composition is provided which comprises a polyethylenically unsaturated compound and effective photosensitizing amounts of (a) a phenacyl ester, and (b) a tertiary aliphatic amine.
Claims13
A liquid coating composition curable by ultraviolet radiation comprising a photopolymerizable polyethylenically unsaturated ester of an .alpha., .beta.-ethylenically unsaturated acid and a polyhydric alcohol and effective photopolymerizing amounts of (1) a tertiary aliphatic amine and (2) a phenacyl acetate represented by the formula:
- ##STR4## wherein R is an alkyl radical of 1 to 7 carbon atoms, X is selected from hydrogen or alkyl of 1 to 8 carbon atoms, and Y and Z are each selected from hydrogen, alkyl of 1 to 8 carbon atoms, alkoxy of 1 to 8 carbon atoms, halogen or phenyl.
Dependencies are inferred from the claim text.