TERNARY PHOTOINITIATOR SYSTEM FOR CURING OF EPOXY RESINS

摘要

Photocurable, addition polymerizable compositions contain an epoxy resin and a photoinitiator system containing (a) an epoxy resin and (b) a photoinitiator system comprising: (i) an iodonium salt; (ii) a visible light sensitizer; and (iii) an electron donor compound, wherein the photoinitiator system has a photoinduced potential of at least about OmV relative to a standard solution of 2.9X10-5 moles/g diphenyl iodonium hexafluoroantimonate and 1.5X10-5 moles/g camphorquinone in 2- butanone. The compositions cure on exposure to light in the visible spectrum and are useful in a variety of applications, including dent al adhesives and composites.