Compositions and process,申请号US19810290689-传众专利搜索

Compositions and process

申请公布号：US4425208(A)

申请号：US19810290689

申请日期：1981.08.06

申请公布日期：1984.01.10

申请人：

THE UPJOHN COMPANY

发明人：JACOBINE, ANTHONY F.

分类号：C08F2/48;C08F2/50;G03F7/031;(IPC1-7):C08F2/48

主分类号：C08F2/48

摘要：The photopolymerization of ethylenically unsaturated compounds is effected using a combination of an aromatic ketone photosensitizer and a tetrasubstituted urea (e.g. N,N,N',N'-tetramethylurea) or N,N-disubstituted acid amide. Storage stable liquid photoinitiator compositions comprising an aromatic ketone sensitizer (e.g. benzophenone) and a tetrasubstituted urea (e.g. N,N,N',N'-tetramethylurea) are also disclosed. The use of the tetrasubstituted urea or N,N-disubstituted amide possesses advantages (storage stability, lack of discoloration on curing) over photosensitizers such as Michler's ketone which have been used previously in combination with aromatic ketone photosensitizers.