Corning Incorporated
Fiber coating compositions with acylgermane photoinitiators

Abstract:

The present disclosure provides coating compositions that can be cured at fast rates as well as coatings and cured products formed from the coating compositions. The coating compositions include an acylgermane photoinitiator that leads to fast cure speeds. The coating compositions include primary coating compositions and secondary coating compositions. The coating compositions can be cured to form primary and secondary coatings of optical fibers. The primary coatings feature low Young's modulus and high tear strength. The primary coatings provide good microbending performance and are resistant to defect formation during the fiber draw process and subsequent handling operations. The secondary coatings feature high Young's modulus and good puncture resistance.