In particular, a photosensitive resin composition characterized by comprising a urethane resin soluble in aqueous alkali solutions, the urethane resin obtained by urethanizing in the absence of catalyst a diisocyanate compound , a diol compound having an ethylenically unsaturated group in its molecule and a diol compound having a carboxyl group in {HEAD ~ its molecule} optionally together with {TAIL ~ a diol compound} not having any ethylenically unsaturated group or carboxyl group in its molecule and reacting the reaction product with a cyclic acid anhydride ; photopolymerization initiator ; and a reactive crosslinking agent  
In particular , a photosensitive resin composition characterized by comprising a urethane resin soluble in aqueous alkali solutions , the urethane resin obtained by urethanizing in the absence of catalyst a diisocyanate compound , a diol compound having an ethylenically unsaturated group in its molecule and a diol compound having a carboxyl group in { HEAD ~ its molecule } optionally together with { TAIL ~ a diol compound } not having any ethylenically unsaturated group or carboxyl group in its molecule and reacting the reaction product with a cyclic acid anhydride ; photopolymerization initiator ; and a reactive crosslinking agent
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH