Uv-ray curable resin composition and coated optical fiber

C - Chemistry – Metallurgy – 08 – G

Patent

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402/157, 117/195

C08G 18/62 (2006.01) C03C 25/10 (2006.01) C08G 18/67 (2006.01) C08G 18/69 (2006.01)

Patent

CA 1243444

Abstract A UV-ray curable resin composition comprising a poly- urethane derived from a polyether polyol and a diene polymer having hydroxyl group, said polyurethane having polymerizable double bond different from the carbon- carbon double bonds contained in said diene polymer having hydroxyl group, and a coated optical fiber having a coated layer comprising the cured product of said resin composition. This composition has good coating character- istics, and the cured product thereof has small modulus over a wide temperature range and good hydrolysis resistance, and water absorption resistance. The coated optical fiber has small transmission loss over a wide temperature range and has high strength even in water.

505428

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