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AssigneesNippon Telegraph & Telephone Public Corporation, Nitto Electric Industrial Co., Ltd.
InventorsTakao Kimura, Nobuo Inagaki, Mitsuo Yoshihara, Fumihiko Kato
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Coated optical glass fibers are described, wherein the coating composition comprises an unsaturated polyester containing at least one of (1) polyethylene glycol or polypropylene glycol having an average molecular weight of from 200 to 1,000 as a glycol component, (2) a long chain saturated aliphatic dibasic acid containing 12 or more carbon atoms as saturated polybasic acid component, and an acrylate or methacrylate, and (3) a long chain saturated aliphatic dibasic acid containing 6 or more carbon atoms as a saturated polybasic acid component and a long chain aliphatic dihydric alcohol containing 4 or more carbon atoms as a glycol component; and an acrylate or methacrylate.
An optical glass fiber coated with a cured polymeric layer formed from a composition comprising an unsaturated polyester comprising glycol and unsaturated polybasic acid components, including at least one of (1) polyethylene glycol or polypropylene glycol having average molecular weight of from 200 to 1,000 as a glycol component, (2) a long chain aliphatic saturated dibasic acid containing 12 or more carbon atoms as a saturated polybasic acid component, and (3) a long chain aliphatic saturated dibasic acid containing 6 or more carbon atoms as a saturated polybasic acid component and a long chain aliphatic dihydric alcohol containing 4 or more carbon atoms as a glycol component;
A method of forming a coated optical glass fiber wherein:
Dependencies are inferred from the claim text.