Radiation-curable optical fiber coatings having reduced yellowing and fast cure speed
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United States of America Patent
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Feb 13, 2001
Grant Date -
N/A
app pub date -
Jun 18, 1998
filing date -
Jun 18, 1997
priority date (Note) -
Expired
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Abstract
Radiation-curable inner and outer primary optical fiber coatings are disclosed having both fast cure speed and reduced rates of yellowing. The compositions comprise particular photoinitiators and UV absorbers which are used in amounts to provide the combination of properties. The UV absorber can have ethylenic unsaturation. Outer primary coatings can be formulated to screen inner primary coatings and have fast cure speed.
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