Patent ID: 7046904

Claim:
A clad resin composition for optical fiber or waveguide comprising: (A) 40–95 parts by weight of a photopolymerizable acrylate derived from a mixture composed of 5–90% by weight of a polyol copolymer, 20–40% by weight of an acid anhydride, 5–50% by weight of a (meth)acrylate alcohol, 0.01–1% by weight of a condensation catalyst and 0.01–1% by weight of a polymerization inhibitor, (B) 5–60 parts by weight of a photopolymerizable monomer; (C) 0.5–20 parts by weight of a photopolymerization initiator and (D) 0.1–5 parts by weight of a leveling or antifoaming agent.