a process for rendering cellulose and cellulose containing fabrics fire resistant by first impregnating the fibers with an aminoplast resin and polymerizing the resin while the fibers are wet and swollen . thereafter , the fabric is impregnated with tetrakis phosphonium hydroxide , cured , washed and dried . the fabric obtained from this process possesses high fire - retardency values , soft hand , and tensile values similar to that of the untreated fabric .