| abstract |
The invention relates to novel photoinitiators which are functionalized with polymerisable groups in order to limit their migration ability. Photoinitiators are described which are functionalized with terminal alkyne groups and / or with terminal vinyl carbonate groups. By virtue of these groups, which are reactive with respect to a polymerization reaction or crosslinking reaction, the photoinitiators or their cleavage and degradation products can be largely reacted in the course of a UV-initiated curing of a polymerizable or crosslinkable formulation, and thus covalently bonded to the polymer matrix. This leads to a significantly reduced migration capacity, whereby the release of potentially harmful photoinitiators or their cleavage and byproducts is minimized. UV-curable formulations are also shown which include photoinitiators with terminal alkyne and / or vinyl carbonate functionalities. |