Process for preparing polyester blend fabrics with durable flame resistance

Abstract

Abstract THERE IS PROVIDED A PROCESS FOR IMPARTING FLAME RETARDENCY TO A FABRIC COMPRISED OF A LEAST 30 PERCENT OF POLYESTER FIBERS, AT LEAST 5 PERCENT OF CELLULOSE ACETATE FIBER, AND AT LEAST 15 PERCENT OF A CELLULOSIC FIBER. IN SAID PROCESS O THE FABRIC IS PASSED THROUGH A BATH COMPRISED OF A FLAME RETARDANT AMOUNT OF TETRAKISHYDROXYMETHYLPHOSPHONIUM CHLORIDE. THEREAFTER THE FABRIC IS CURED AT A TEMPERATURE OF FROM ABOUT 225 TO ABOUT 400 DEGREES FAHRENHEIT FOR FROM ABOUT 15 SECONDS TO ABOUT 10 MINUTES. TO IMPART FLAME RETARDENCY TO THE POLYESTER PORTION OF SAID FABRIC THE FABRIC IS PASSED THROUGH A SOLUTION OR EMULSION COMPRISED OF A FLAME RETARDANT AMOUNT OF A COMPOUND OF THE FORMULA R5-P(=O)(-R6)-R7 WHEREIN R5, R6, AND R7 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROXY, CHLORINE, FLUORINE, BROMINE, IODINE, HALOALKYL OF 1 TO ABOUT 18 CARBON ATOMS, AND HALOHDROXYALKYL OF 1 TO ABOUT 18 CARBON ATOMS, PROVIDED THAT AT LEAST ONE OF R5, R6, AND R7 IS HALOALKYL OR HALOHYDROXYALKYL. THE USE OF CELLULOSE ACETATE AS ONE OF THE COMPONENTS OF THE AFOREMENTIONED FABRIC ALLOWS ONE TO OBTAIN MORE DURABLE FLAME RETARDANCE AND BETTER FABRIC AESTHETIC WITH REDUCED QUANTITIES OF FLAME RETARDANT.

Inventors

• 👤 Stancil Driftwood Powell

Bibliographic Details