A new class of phosphorus-containing polyols that are prepared as residue products directly from elemental phosphorus can be effectively used as cellulosic flame retardants. Long-term laundry durability has been observed through the use of appropriate binder systems and typical textile finishing techniques, even in the case of low-level polyester-cotton blends. The high phosphorus content and ease of synthesis of the phosphorus polyols offer the possibility of a novel approach to developing low-cost textile flame retardants.
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