Flame retardant UV cured buffered optical fibers and buffer composition

US7660505B2 · kind B2 · utility

Assignee

• DSM IP ASSETS B.V. · NL

Inventors

• David M. Chase · Vernon Hills, US
• Kenneth Dake · South Elgin, US
• Kelly A. Hawkinson · Aurora, US
• Jack Kelly · Woodridge, US
• Edward J. Murphy · Elgin, US

Key dates

• Filing date: Apr 16, 2007
• Grant date: Feb 9, 2010
• Expiry date: Apr 16, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C25/1065
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An optical fiber comprising a flame retardant UV light-curable tight-buffer coating coated onto the fiber, wherein said tight-buffer coating is substantially halogen-free, and has a limiting oxygen index of at least about 22%, and wherein said tight-buffer coating is removable from said fiber with a strip-force of less than about 1800 grams when the fiber is upjacketed with said coating at a line speed of at least 300 m/min.