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US 12,649,812 B2Granted
Resin composition, optical fiber, and method for producing optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorYuya Homma
Life of this patent
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Abstract
A resin composition for primary coating of an optical fiber includes a photopolymerizable compound and a photopolymerization initiator. The photopolymerizable compound includes a urethane oligomer and an N-vinyl compound represented by the formula (I) below: (where R represents an alkyl group having 1 to 5 carbon atoms).
Claims8
A resin composition for primary coating of an optical fiber, the resin composition comprising:
- a photopolymerizable compound and a photopolymerization initiator,
- wherein the photopolymerizable compound includes a urethane oligomer and an N-vinyl compound represented by the formula (I) below:
- (where R represents an alkyl group having 1 to 5 carbon atoms), and
- wherein the urethane oligomer contains a urethane oligomer having at least one group selected from the group consisting of a group based on monohydric alcohol and a group based on an active hydrogen-containing silane compound at at least one end of the urethane bond.
1 more element
Dependencies are inferred from the claim text.