Flame-retardant treatments for cellulose-containing fabrics and the fabrics so treated

A flame retardant fabric, said fabric comprising:

• a first plurality of yarns in a first direction and a second plurality of yarns in a second direction substantially perpendicular to said first direction, wherein said fabric is a woven fabric having warp yarns and fill yarns, wherein said first plurality of yarns are warp yarns and said second plurality of yarns are fill yarns, said warp yarns being spun yarns comprising an intimate blend of cellulosic fibers and synthetic fibers, said fill yarns defining a patternwise arrangement comprising a repeating pattern of a synthetic filament yarn in combination with at least two spun yarns comprising cellulosic fibers;
• and wherein said fabric has a cellulosic fiber content of at least 45% by weight of said fabric and a synthetic fiber content of at least 30% by weight of said fabric;
• and wherein said cellulosic fibers have a pentavalent phosphate compound polymerized therein.

A flame retardant fabric, said fabric comprising:

• a first plurality of yarns in a first direction and a second plurality of yarns in a second direction substantially perpendicular to said first direction, wherein said fabric is a woven fabric having warp yarns and fill yarns woven in a twill construction, wherein said first plurality of yarns are warp yarns and said second plurality of yarns are fill yarns, said warp yarns being spun yarns comprising an intimate blend of cellulosic fibers and synthetic fibers, said fill yarns defining a patternwise arrangement comprising a repeating pattern of a textured nylon filament yarn in combination with at least two spun yarns consisting essentially of cellulosic fibers;
• and wherein said fabric has a cellulosic fiber content of at least 45% by weight of said fabric and a synthetic fiber content of at least 30% by weight of said fabric;
• and wherein said cellulosic fibers have a pentavalent phosphate compound polymerized therein.