A fiber, especially an optical fiber, comprising a lightguide, provided with a protective coating comprising at least one layer of a crosslinked epoxidized-polydiene oligomer, as well as to a process for manufacturing such a fiber. The protective coating may include an intermediate layer of a crosslinked material that adheres to the fiber less strongly than the crosslinked epoxidized-polydiene oligomer.

Uma fibra, especial uma fibra ótica, compreendendo um lightguide, desde que com revestir protetor compreendendo ao menos uma camada de um oligomer epoxidized-polydiene-polydiene crosslinked, as.well.as a um processo para manufaturar tal fibra. O revestimento protetor pode incluir uma camada intermediária de um material crosslinked que adira à fibra menos fortemente do que o oligomer epoxidized-polydiene-polydiene crosslinked.