High temperature coating composition for glass optical fibers, a method of making a coating composition and a coated optical glass fiber

摘要

Provided is a radiation-curable optical glass fiber coating composition adapted to provide the combination of properties of:P P (i) enhanced resistance to thermal degradation when suitably cured; andPP(ii) a viscosity sufficient to provide a surface substantially free-of pitting.PPThe composition is formulated from components including:PP(A) at least one epoxy silicone monomer or oligomer which is crosslinkable via actinic radiation, or mixture thereof;PP (B) at least one thermoplastic resin which is substantially unreactive to actinic radiation and which is soluble or dispersible in component (A), said thermoplastic resin being present in an amount to provide said composition with a viscosity suitable for application to an optical glass fiber; andPP(C) a catalytically effective amount of a photoinitiator for catalyzing the crosslinking reaction of component (A) and which is soluble or dispersible in component (A) or a mixture of said component (A) and said thermoplastic resin. Also provided is a method of making the radiation-curable coating composition and a coated optical glass fiber.