| abstract |
An object of the present invention is to quickly cure by irradiating active energy rays such as ultraviolet rays, and the cured product has excellent mechanical properties, has flexibility, has a low refractive index, and has high transparency. To develop a resin composition which is excellent and is mainly applicable to a cladding layer of an optical fiber for optical transmission. SOLUTION: A fluorine-containing urethane (meth) acrylate compound and a (meth) acrylate compound having a fluorinated polyether in the structure are synthesized, and a resin composition composed of these and a photopolymerization initiator is prepared. . |