Patent ID: 6110593
Filing Date: 2000-08-29
Classification: C03C,Y10T

Abstract:
A system for coating an optical glass fiber comprising a radiation-curable inner primary coating composition and a radiation-curable outer primary coating composition wherein:said radiation-curable inner primary coating composition comprising at least one strip enhancing component, said inner primary coating composition, after radiation cure, having the combination of properties of:(a) a glass transition temperature of below 0.degree. C.; and(b) adhesion to glass of at least 5 g/in when conditioned at 95% relative humidity; andsaid outer primary coating composition comprising an oligomer having at least on e functional group capable of polymerizing under the influence of radiation, said outer primary coating composition, after radiation cure, having a secant modulus of greater than 1000 MPa at 23.degree. C.