| abstract |
PROBLEM TO BE SOLVED: To provide a photocurable resin composition which gives a cured product which is excellent in heat resistance and extremely small in deformation and is particularly useful as an optical member. (A) a polyol having a branched structure, having a hydroxyl group at the end of each branched chain, and having a value obtained by dividing the molecular weight of the polyol by the number of hydroxyl groups at the branched chain end, from 100 to 2000; , Urethane (meth) acrylate oligomer 20 to 60% by mass obtained from polyisocyanate and hydroxyl group-containing (meth) acrylate, (B) polymerizable monofunctional compound 30 to 70% by mass, and (C) photo radical polymerization initiator A photocurable resin composition for an optical member containing 0.01 to 10% by mass; and a cured product obtained by curing the photocurable resin composition. [Selection] Figure 1 |