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US 4,054,721 AGranted
Photosensitizers for radiation-curable coatings
AssigneeAmerican Cyanamid Company
InventorWilliam Frederick Cordes, III
Life of this patent
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Abstract
2-Alkoxy-1,3-diphenyl-1,3-propanedione compounds have been found useful as photosensitizers in radiation-curable coating compositions. The novel photosensitizers of this invention have the structural formula ##STR1## in which R is an alkyl radical of from one eight carbon atoms.
Claims11
A liquid composition curable by ultraviolet radiation comprising a photopolymerizable polyethylenically unsaturated ester of a polyhydric alcohol and an effective amount of a photosensitizer compound represented by the formula:
- ##STR3## wherein R is an alkyl radical of 1 to 8 carbon atoms.
Dependencies are inferred from the claim text.