| abstract |
The present invention relates to a radiation curable composition comprising a liquid bis (acyl) phosphine photoinitiator of the general formula (I) The present invention also relates to a radiation curable composition comprising a stabilized form of liquid bis (acyl) phosphine of formula I and a stabilized photoinitiator. The radiation curable composition is selected from the group consisting of an optical fiber coating composition, a coating composition capable of radiation curing on concrete, and a coating composition capable of radiation curing on metal. Formula I In this formula, Ar 1 , Ar 2 and Ar 3 are each independently a substituted or unsubstituted aryl group. |