Supercritical CO2 Delivers Retardants | January 3, 2011 Issue - Vol. 89 Issue 1 | Chemical & Engineering News
 
 
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Volume 89 Issue 1 | p. 24 | Concentrates
Issue Date: January 3, 2011

Supercritical CO2 Delivers Retardants

Using CO2 as a solvent for two “green” flame retardants dramatically improves cotton’s flame resistance
Department: Science & Technology
Keywords: supercritical carbon dioxide, flame retardant

Using supercritical carbon dioxide as a solvent for two novel flame retardants, chemists have made cotton as resistant to flames in lab-scale tests as Nomex, the popular material used in lab coats and NASCAR racing suits. Cotton is usually made flame resistant with resins that are applied to finished garments. But as these garments are laundered and go through normal wear and tear, the resin gradually comes off. Furthermore, the resins usually contain toxic halogenated . . .

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