POLYURETHANE ACRYLATE OR -VINYL POLYMER MATERIALS FOR COATING OPTICAL FIBERS BASED ON FLUORINATED DIOL

摘要

The invention provides a polyurethane type polymeric material for coating optical fibers, based on a fluorinated diol with formula I:where n is 2 to 20, and A signifies -CH=CH or -CH2CH2-, and R is an alkyl group containing 1 to 4 carbon atoms. The invention also provides a fiber coated with this polymer which has been light-cured, and a fiber drawing method comprising a step of coating the fiber with a material of the invention.