Patent ID: 6043295
Filing Date: 2000-03-28
Classification: A61K,G03F,Y10S

Abstract:
A photopolymerizable composition comprising:(a) a blend of epoxy resins comprising:(i) a cycloaliphatic epoxide; and(ii) an epoxide that is different than the cycloaliphatic epoxide, and which is selected from the group consisting of aliphatic epoxide, aromatic epoxide, and mixtures thereof; 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 greater than or equal to that of 3-dimethylaminobenzoic acid in a standard solution of 2.9.times.10.sup.-5 moles/g diphenyl iodonium hexafluoroantimonate and 1.5.times.10.sup.-5 moles/g camphorquinone in 2-butanone.