RADIATION CURABLE COATING COMPOSITION FOR OPTICAL FIBER WITH REDUCED ATTENUATION LOSS
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United States of America Patent
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app pub date -
Oct 1, 2013
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Apr 24, 2002
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Abstract
The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having:
- a) a hardening temperature (Th) of from −10° C. to about −20° C. and a modulus measured at said Th of lower than 5.0 MPa; or b) a hardening temperature (Th) of from −20° C. to about −30° C. and a modulus measured at said Th of lower than 20.0 MPa; orc) a hardening temperature (Th) of lower than about −30° C. and a modulus measured at said Th of lower than 70.0 MPa.
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