CURABLE LIQUID RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a curable liquid resin composition having quick curability and good storage stability and giving an optical fiber element having high immersion resistance in hot water. SOLUTION: The curable liquid resin composition contains (A) 35-85 mass% urethane (meth)acrylate having a structure derived from a polyether polyol, (B) 1-60 mass% compound containing ethylenic unsaturated group other than the compound A, (C) 0.01-1 mass% amine-based photosensitizer and (D) 0.01-10 mass% photopolymerization initiator (based on 100 mass% of the total composition), and the sum of zinc and cobalt elementsin the composition is 0.5-10 ppm determined by inductively coupled plasma mass spectrometry (ICP-MS). COPYRIGHT: (C)2007,JPO&INPIT