D1563 radiation curable secondary coating for optical fibers
US10370557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Dec 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02395
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A radiation curable secondary coating composition for optical fiber is described and claimed. This radiation curable secondary coating composition includes component (A) which is a urethane (meth)acrylate and component (B) which is a (meth)acrylate compound with two or more ethylenically unsaturated groups and one or more bisphenol structures; wherein the content of component (B) in the composition is 60-300 mass parts per 100 mass parts of component (A). The liquid secondary coating has a viscosity at 25° C. of from about 0.1 Pa·s to about 15 Pa·s. Films obtained by curing the liquid radiation curable secondary coating composition of the present invention have a Young's modulus of from about 600 MPa to about 500 MPa and the breaking elongation of the cured film is from about to 5% to about 50%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.