| abstract |
Provided is a photopolymerization initiator component capable of eliminating or at least reducing accumulation of scum and residues in a developing solution and a stripping solution and accumulation of scum and residues on an apparatus and a printed wiring board. A compound comprising a photoinitiator bound to a hydrophilic carrier component. The carrier component may contain sufficient hydrophilicity so that the entire compound is water-soluble or water-emulsifiable. This compound is used in a photosensitive composition such as a photoresist. The carrier component includes, for example, a monomer, an oligomer, a polymer, a plasticizer, and a surfactant. [Selection diagram] None |