Radiation-curable flame retardant optical fiber coatings
US6850681B2 · kind B2 · utility
70Cited by
15References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Apr 14, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/106
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A buffer coating for optical fibers is disclosed which includes a halogenated epoxy resin for flame-retardancy, and elastomer modified epoxy resin for tensile strength and flexibility, a low viscosity bisphenol resin for structural integrity, a viscosity modifier for improved process or extrusion properties, a polyol to increase the cure rate and cross-linking during curing, a slip agent or surfactant to reduce the adhesion of the buffer layer to the cladding and to further improve the flow characteristics during extrusion, and a photo-initiator. The buffer layer is flame-retardant and has a fast UV cure rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.