| abstract |
The present invention finds a process for the production of metallated alkylacylphosphines which is suitable as starting material for the production of acylphosphine oxides or acylphosphine sulfides which are photoinitiators. The following compounds are: It is a valuable intermediate for the production of asymmetric bisacylphosphine oxides and monoacylphosphine oxides. These photoinitiators are also suitable as initiators for oxidative drying system curing. The compounds of the present invention can be used as initiators for emulsion polymerization, granular polymerization, suspension polymerization, or as polymerization initiators that fix the alignment state of mono- and oligomers of liquid crystals, or for fixing dyes to organic materials. It can also be used as a radical photoinitiator or photoinitiator system for radiation curable powder coatings. [Selection figure] None |