UV-ray curable polyurethane composition and coated optical fiber
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United States of America Patent
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Jan 19, 1988
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N/A
app pub date -
Mar 26, 1986
filing date -
Mar 29, 1985
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Expired
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Abstract
A UV-ray curable resin composition comprising a polyurethane 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 characteristics, 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.
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