Patent ID: 8515229

Claim:
A method of producing an elastomeric optical fiber, the method which comprises: mixing a plurality of reactive starting components in a predetermined composition in a metering device to form a viscous reactive starting material formed of first component (A 1 ) made up of 98.34% by weight of a trivalent polyol based on polycaprolactone, 1.1% by weight of an additive component, and 0.55% by weight of a catalyst, and of a second component being a commercially available polyisocyanate with an NCO content of 22%; providing a reaction device containing a liquid that is inert with respect to the reactive starting material; passing the viscous reactive starting material to and through a nozzle die to form a fiber from the reactive starting material, and guiding the fiber into the reaction device; cooling the reactive starting material until the starting material reaches the reaction device, and at least partially crosslinking the starting material in the reaction device.