Patent ID: 6169126
Filing Date: 2001-01-02
Classification: C03C,Y10T

Abstract:
A system for coating an optical glass fiber comprising: a radiation-curable inner primary coating composition comprising at least one strip enhancing component, wherein said strip enhancing component includes a high aromatic oligomer and/or a high aromatic monomer diluent; and a radiation-curable outer primary coating composition comprising an oligomer having at least one functional group capable of polymerizing under the influence of radiation, and wherein said inner primary coating composition, after radiation cure, has the following combination of properties: (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; and wherein said outer primary coating composition, after radiation cure, has a secant modulus of greater than 1000 MPa at 23.degree. C.