Patent ID: 6797841
Filing Date: 2004-09-28
Classification: C07C,C08F,G03F

Abstract:
A substantially non-mutagenic photopolymerizable composition which is substantially free of epoxy resin and comprising a photopolymerizable compound and a substantially non-mutagenic photoinitiator having photoimtiation activity sinular to that exhibited by 4,4â€²-bis(dimethylamino)benzophenone under similar conditions, said photoinitiator having the formula wherein:each A is independently selected from the group consisting of hydrogen, lower alkyl, cycloalkyl, aryl, lower alkanol, lower alkoxy, halogen, sulfonyl, ailcylsulfonyl, trihaloalkyl, trihaloalkoxy, trihaloalkylthio, polynierizable moiety â€”(CH2)nâ€²â€”OC(O)â€”CRâ€²H&boxH;CH2, wherein nâ€² is an integer from 1 to 10 and Râ€² is H or lower alkyl, polymerizable maleimick moiety, and oligomeric moiety, with the proviso that no more than three A are the same lower alkyl; each R is independently selected from the group consisting of hydrogen, lower alkyl, cycloalkyl, aryl, lower alkanol, lower alkoxy, halogen, sulfonyl, alkylsulfonA, trihaloalkyl, trilialoalkoxy, trihaloallcylthio, polyinerizable moiety, and oligomeric moiety; and n is an integer from 1 to 4.