Flame-resistant polyorganosiloxane compound containing hollow glass balls and intumescent compound

US5262454A · kind A · utility

Assignees

• Down Corning GmbH · DE
• Schott Glaswerke · DE

Inventors

• Roland Leroux · Stadecken-Elsheim, DE
• Jurgen Thurk · Schornsheim, DE
• Reinhard Jonas · Idstein, DE

Key dates

• Filing date: Jan 24, 1992
• Grant date: Nov 16, 1993
• Expiry date: Jan 24, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K13/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A flame-resistant, hardenable polyorganosiloxane compound is described with a content of 2 to 40 weight % hollow glass balls with an outside diameter of up to 200 .mu.m and 3 to 50 weight % of an inorganic intumescent compound which expands at a temperature from 80.degree. to 250.degree. C. The preferred intumescent compound is expandable graphite. The compound can replace the previous compounds provided with polyhalogenated diphenyl compounds in fireproof windows.