Examples of suitable initiating constituents include, but are not limited to, peroxide, peroxydicarbonate, azo free radical initiators, and {HEAD ~ UV initiators} such as {TAIL ~ Irgacure®} 1850, Irgacure® 369 and Darocure® 1700 available from Ciba Specialty Chemicals, Basel, Switzerland 
Examples of suitable initiating constituents include , but are not limited to , peroxide , peroxydicarbonate , azo free radical initiators , and { HEAD ~ UV initiators } such as { TAIL ~ Irgacure ® } 1850 , Irgacure ® 369 and Darocure ® 1700 available from Ciba Specialty Chemicals , Basel , Switzerland
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