Radiation‐Induced Reaction of Sulfonamide‐Containing Polymers in the Film State for Color Imaging

A polysulfonamide and copolymers consisting of sulfonamides and amides underwent Fries rearrangement and scission, forming amino groups upon EB irradiation. The EB irradiation of these films with a dose of 500 μC. cm -2 , followed by the color forming reaction provided the color imaging of line/space patterns with a resolution of 300 nm.