Previous work at the Southern Division has shown that THPC-cyanamide reacts in the presence of phosphoric acid to impart durable flame retardancy to cotton textiles. However, the strength of the treated fabric is reduced considerably. This paper reports on a new improved formulation which contains dibasic sodium phosphate instead of phosphoric aicd. When this finish is applied to sleepwear, such as flannelette, durable flame resistance, together with good strength reten tion, is obtained. The effect of dibasic sodium phosphate concentration, mole ratio of reactants, and curing time on the durability and physical properties of the treated fabric are discussed.
American Society for Testing and Materials , "Breaking Load and Elongation of Textile Fabrics," ASTM Designation D1682-64.
2.
American Society for Testing and Materials , "Tear Resistance of Woven Fabrics by Falling-Pendulum (Elmendorf) Apparatus," ASTM Designation D1424-63.
3.
American Society for Testing and Materials , "Wrinkle Recovery of Woven Textile Fabrics Using the Vertical Strip Apparatus," ASTM Designation D1295-67.
4.
Donaldson, D.J. , Normand, F.L., and Drake, G.L., Jr., The Effect of pH on the THPC-Cyanamide Flame Retardant, Amer. Dyestuff Reptr., In press.
