Patent ID: 8792761
Filing Date: 2014-07-29
Classification: C03C,C08F,C08G,C09D

Abstract:
1. An optical fiber comprising a glass core and a protective coating consisting of a single coating layer disposed to surround said glass core, wherein said single coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition comprising (i) a radiation curable urethane (meth)acrylate oligomer, or a radiation curable urethane (meth)acrylate oligomer comprising a backbone derived from polyoxytetramethylene glycol; (ii) at least one monofunctional reactive monomer; (iii) at least one multifunctional reactive monomer; and (iv) an adhesion promoter, said radiation curable composition having a viscosity ranging from 2800 mPa·s to 3600 mPa·s, said polymeric material having a tensile modulus at 40° C. less than 20 MPa and a tensile modulus at −40° C. less than 300 MPa.