Flame retardants and method of use

C - Chemistry – Metallurgy – 09 – K

Patent

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117/34, 400/7019

C09K 21/00 (2006.01) D06M 11/72 (2006.01) D06M 13/432 (2006.01) D06M 15/277 (2006.01)

Patent

CA 1336996

Aqueous compositions imparting semi durable flame retardant properties to cellulosic substrates contain an ammonium or organic quaternary ammonium condensed phosphate and a dispersion of a fluoropolymer and preferably a carbamic acid derivative such as urea. The substrate are impregnated and cured at 120-170°C.

609809

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