Extruded polymer foams containing brominated fatty acid-based flame retardant additives

US8080592B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• William J. Kruper, Jr. · Sanford, US
• David R. Arrowsmith · Nesbitt, GB
• Duane R. Romer · Midland, US
• Bruce M. Bell · Grayling, US
• William G. Stobby · Midland, US
• Inken Beulich · Laufenburg (Baden), DE
• Zenon Lysenko · Midland, US
• John Gordon-Duffy · La Wantzenau, FR
• Chau V. Vo · Souffelweyersheim, FR

Key dates

• Filing date: Oct 8, 2008
• Grant date: Dec 20, 2011
• Expiry date: Sep 3, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T82/2562
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Extruded polymer foams are prepared using brominated fatty acids, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, or a polymerized brominated fatty acid as an FR additive. The brominated FR additives unexpectedly are stable at the extrusion temperatures, and provide excellent flame retardancy to the foams.