Abstract
AbstractThe synthesis is reported of a new series of polymeric photoinitiators obtained by copolymerization of a‐methylolbenzoin methyl ether acrylate (MBA) with different N,N‐dialkylamino alkyl acrylates.The copolymers have been fully characterized and employed in the photoinitiated polymerization and crosslinking reactions of a standard acrylic formulation for clear curable coatings.The photoinitiation activity of the above systems has been measured by using microwave dielectrometry and differential photocalorimetry, and compared with that found for the corresponding low‐molecular‐weight models.The results clearly indicate that the copolymeric systems display a remarkable decrease of the induction period and an improved overall activity in the UV curing of the acrylic coatings.An interpretation of the experimental findings is also reported.
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