| Résumé : |
Bimolecular photoinitiators are those aryl-aryl ketone derivatives, which upon irradiation, abstract hydrogen ion from a coinitiator generating coinitiator derivated radical which in turn initiate photopolymerisation. Present review, which is third in the series on UV cure coatings, covers structure, activity, cleavage mode, cure performance, physical characteristics, trade names, advantages and drawbacks, as well as a detail accounting of all the recent research investigation and innovations in reference to the following Type II PI systems : benzophenone(s), (thio)xanthones(s), anthraquinones, α-keto coumarin, 1, 2 diketone derivatives. in addition, new commercial photoinitiators, launched during last decade, have been evaluated for their role in enhancement of curing efficiency. |
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Recent developments in UV cure photoinitiators in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
