Dsm IP Assets B.v.

Kelly A Hawkinson

Edward Joseph Murphy

Kenneth Dake

Jack Kelly

David M Chase

Anthony Joseph Tortorello

Edward P Zahora

Anthony F Toussaint

Timothy P Reichert

The invention relates to a radiation curable composition including a polyester urethane (meth)acrylate oligomer prepared from ortho-carboxylic polyester polyols, where the composition, after cure, has a secant modulus greater than about 600 MPa and an elongation at break of at least about 10%. The invention also relates to coated optical fibers and optical fiber ribbon including at least one coating derived from this composition, and to a process of making these coated optical fibers.

Radiation curable coating composition

An optical fiber comprising a flame retardant UV light-curable tight-buffer coating coated onto the fiber, wherein said tight-buffer coating is substantially halogen-free, and has a limiting oxygen index of at least about 22%, and wherein said tight-buffer coating is removable from said fiber with a strip-force of less than about 1800 grams when the fiber is upjacketed with said coating at a line speed of at least 300 m/min.

Flame retardant UV cured buffered optical fibers and buffer composition

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Aurora, IL, United States of America

Kelly A Hawkinson