PHOTOCURABLE COATING RESIN COMPOSITION AND METHOD FOR PRODUCING THE SAME, AND OPTICAL FIBER CORE FIBER, COLORED CORE FIBER, UNIT, OR OVERCOAT CORE FIBER

摘要

PROBLEM TO BE SOLVED: To provide a photocurable coating resin composition satisfying demands for core fibers and giving a good normal stress on high speed shear. SOLUTION: This photocurable coating resin composition contains the low molecular polymerizable first polyurethane compound (A) having a radical-polymerizable group at one molecular end and obtained by reacting an organic diisocyanate with a radical-polymerizable group-containing monool compound, and a radical-polymerizable group-free monool compound. COPYRIGHT: (C)2006,JPO&NCIPI