| abstract |
PROBLEM TO BE SOLVED: To provide a resin composition for optical fiber coating for single layer coating or primary coating which satisfies curability and glass adhesion and is excellent in hot water strength property and wet heat strength property. An optical fiber coating resin composition containing a radical polymerizable compound (A), a photopolymerization initiator (B), and an alkoxysilyl compound (C), wherein the alkoxysilyl compound (C) is represented by the formula: (I) An alkoxysilyl compound (C1) represented by the formula (II) (In the formula, q is an integer of 1 to 4, or 6, X is an alkyl group having 1 to 20 carbon atoms, and the formula (III) And the like. The resin composition for optical fiber coating | cover characterized by containing the alkoxy silyl compound (C2) represented by this. [Selection figure] None |