RIBBON MATRIX MATERIAL FOR OPTICAL FIBER WITH EXCELLENT BENDING RESISTANCE

摘要

The instant claimed invention is a curable liquid resin composition comprising: (A) a urethane (meth)acrylate having a structure derived from polypropylene glycol with a number average molecular weight of from about 500 to about 4,000; (B) a urethane (meth)acrylate having a bisphenol structure; and (C) a compound having one ethylenically unsaturated group, the component (C) containing isobornyl (meth)acrylate in an amount of from about 40 to about 80 mass% of the total 100 mass% of the component (C). This composition has been found to exhibit high Young's modulus of elasticity and excellent bending resistance. The curable liquid resin composition is suitable for use as a matrix material for optical fiber ribbons.