公开(公告)号：US20220373755A1

公开(公告)日：2022-11-24

申请号：US17764419

申请日：2020-09-30

Applicant: NITTO DENKO CORPORATION

Inventor： Yasuaki OKADA ,  Takeshi SAITO ,  Kenjiro SAOMOTO

IPC: G02B6/44 ,  G02B6/02

Abstract: A plastic optical fiber includes a plastic optical fiber body and a coloring member covering a peripheral surface of the plastic optical fiber body. The coloring member is made from a cured product of a curable composition containing an active-energy-ray-curable multifunctional acrylate and a coloring agent. The reaction percentage yield of the vinyl group of the active-energy-ray-curable multifunctional acrylate in the coloring member is 85% or more.

公开(公告)号：US20220373758A1

公开(公告)日：2022-11-24

申请号：US17764414

申请日：2020-09-30

Applicant: NITTO DENKO CORPORATION

Inventor： Yasuaki OKADA ,  Takeshi SAITO

IPC: G02B6/44 ,  B29D11/00

Abstract: A method for producing a plastic optical fiber including a step of dispersing a pigment in a curable composition containing an active-energy-ray-curable resin and the pigment, and a step of forming a coloring member made from a cured product of the curable composition by applying the curable composition on a peripheral surface of a plastic optical fiber body. The curable composition has a viscosity of 2,000 mPa or more and 3,000 mPa or less at 25° C. In the step of dispersing the pigment, the curable composition is charged into an airtight container having a circular tubular shape with an axis A1 and the airtight container is rotated around the axis A1 intersecting with a vertical line at a circumferential velocity of 0.02 m/sec or more and 0.2 m/sec or less.