| abstract |
The present invention provides a polymerizable fluorene-based photoinitiator, a photocurable composition comprising the same, and applications thereof. The polymerizable fluorene-based photoinitiator has a structure represented by formula (I), wherein R 1 and R 2 are independently selected from polymerizable groups. The small molecule α-hydroxy ketone compound or α-amino ketone compound is made into a macromolecular photoinitiator containing a fluorene structure, and a polymerizable group is introduced at the fluorene-9 position, which can ensure the curing performance. Inhibit migration, especially for the photoinitiator with bifunctional molecular structure, while increasing the molecular weight without reducing the initiator efficiency per unit molecular weight. In addition, due to the large molecular weight of the above photoinitiator, the residual photoinitiator and light after the coating is cured. The decomposed product is not volatile and has the advantage of low odor. |