Parallel Strategies for the VMEC Program

A photocurable resin composition comprising (A) a copolymer composed of, as structural units, (a) 20 to 70% by weight of a hydroxyl group-containing acrylic monomer unit represented by the following formula (I) wherein R1 and R2, independently from each other, represent a hydrogen atom, a methyl group or an ethyl group and n is 1, 2 or 3, and (b) 5 to 80% by weight of a nitrogen-containing acrylic monomer unit represented by the following formula (II) or (III) wherein R3 represents a hydrogen atom or a methyl group, X represents 0 or NH, R4 represents a linear or branched alkylene group having 2 or 3 carbon atoms, R5, R6 and R7, independently from each other, represent a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms and Y(-) represents an anion of an acid, and (B) a diazo compound or an azide compound.