Patent ID: 7676130
Filing Date: 2010-03-09
Classification: C03C,Y10T

Abstract:
1. An optical fiber comprising a glass core and a glass cladding, and a cured primary coating applied to said optical fiber, said cured primary coating comprising a Young's modulus less than 5 MPa and having a refractive index which is higher than that of the cladding of the optical fiber, said cured primary coating being the cured product of a composition comprising: a urethane acrylate oligomer, an acrylate monomer, a photoinitiator, a non-thiol functional adhesion promoter, and at least one thiol strength additive, wherein said at least one strength additive is present and comprises less than 0.3 parts per hundred (pph) by weight of mono-functional thiol in the composition or less than about 0.5 pph by weight of a multi-functional thiol in the composition.