Filling compound for light waveguide leads and/or light waveguide cables

US4839970A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Werner Goetze · Berlin, DE
• Ernst Mayr · Starnberg, DE
• Ulrich Oestreich · Munich, DE
• Helmut Saller · Munich, DE

Key dates

• Filing date: Sep 4, 1987
• Grant date: Jun 20, 1989
• Expiry date: Sep 4, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/36
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A filling compound for a light waveguide lead and/or light waveguide cable. The filling compound comprises polypropylene glycol and a second constituent chosen from the group consisting of: finely distributed fumed silica; aluminum oxide; aluminum hydroxide; a halogen containing organic compound; and mixtures thereof. Preferably, the polypropylene glycol comprises 50 to 99 weight percent of the filling compound, and the second constituent comprises 1 to about 50 weight percent.