OPTICAL FIBRE ELEMENT COMPRISING A POLYACRYLATE COATING LAYER RETICULATED BY UV RADIATION AND AN H--ABSORBING BUFFER

摘要

The optical fibre element comprises at least one layer of coating constituted by a polyacrylate reticulated by UV radiation and at least one H2-absorbing buffer, said polyacrylate comprising at least one photo-initiator of UV reticulation possibly together with an activator for it wherein said photo-initiator and its activator. if any, are selected from the group which comprises those photo-initiators and those activators which cause a reduction in the hydrogen absorption capacity of less than 30% in a H2-absorbing buffer which has been in contact with said polyacrylate contaning them for 30 days at 100.degree.C in an air atmosphere saturated with water vapour at 150 mbar.