Flame retardant compositions

US6472456B1 · kind B1 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Douglas Horsey · Briarcliff Manor, US
• Stephen Mark Andrews · New Fairfield, US
• Leonard H. Davis · Chicago, US
• Darrell David Dyas, Jr. · Acworth, US
• Robert Leo Gray · West Lafayette, US
• Anunay Gupta · Edison, US
• Bruce Vincent Hein · Marietta, US
• Joseph Puglisi · Crompond, US
• Ramanathan Ravichandran · Nanuet, US
• Paul Shields · Rivervale, US
• Rangarajan Srinivasan · Tarrytown, US

Key dates

• Filing date: Nov 3, 1999
• Grant date: Oct 29, 2002
• Expiry date: Nov 3, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K15/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cydoalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.