UNIT OPTICAL FIBER

The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unr...

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Bibliographic Details
Main Authors SATO, TETSUO, UI, KEISUKE, SENO, ATSUYOSHI
Format Patent
LanguageEnglish
French
German
Published 23.10.2013
Subjects
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Summary:The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4 × 10 -3 mole equivalent or less in 1 g of the material. The optical fiber is characterized in that the UV curable resin includes urethane acrylate, a polyisocyanate component in the urethane acrylate is an aromatic polyisocyanate, and tolylene diisocyanate is used as the aromatic polyisocyanate.
Bibliography:Application Number: EP20070740456