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1. (WO2018220605) THERMALLY RESISTANT RADIATION CURABLE COATINGS FOR OPTICAL FIBER

Pub. No.:    WO/2018/220605    International Application No.:    PCT/IB2018/053992
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue Jun 05 01:59:59 CEST 2018
IPC: C03C 25/1065
C09D 175/16
G02B 6/02
G02B 6/44
Applicants: DSM IP ASSETS BV
Inventors: STEEMAN, Paulus Antonius Maria
WU, Xiaosong
BOGAERDS, Adrianus Cornelis Bastiaan
PEPELS, Mark Petrus Franciscus
Title: THERMALLY RESISTANT RADIATION CURABLE COATINGS FOR OPTICAL FIBER
Abstract:
Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below -82 °C, and/or a viscosity ratios, such as between 25 °C and 85 °C, of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.