Flame retardant fibers, yarns, and fabrics made therefrom
AssigneeInvista North America S.A.R.L.
InventorsDeborah M. Sarzotti, Thomas E. Schmitt, Andrew W. Briggs
Life of this patent
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Abstract
Disclosed are technical fibers and yarns made with partially aromatic polyamides and non-halogenated flame retardant additives. Fabrics made from such fibers and yarns demonstrate superior flame retardancy over traditional flame retardant nylon 6,6 fabrics. Further, the disclosed fibers and yarns, when blended with other flame retardant fibers, do not demonstrate the dangerous “scaffolding effect” common with flame retardant nylon 6,6 blended fabrics.
Claims13
A flame retardant staple spun yarn comprising at least one flame retardant fiber comprising MXD6 compounded or dispersed with a non-halogen flame retardant additive prior to or during fiber extrusion, wherein the non-halogen flame retardant additives are present at a concentration of from about 5% to about 20% by weight of said fiber and are selected from the group consisting of melamine polyphosphate (MPP), zinc diethylphosphinate (DEPZn), aluminum diethylphosphinate (DEPAI), silicotungstic acid (SiTA), melamine cyanurate (MC) and combinations thereof;
- said fiber having fabric properties of wear-resistance and durability when formed into a fabric, batting or garment, is self extinguishing in a vertical flammability test ASTM D6413;
- and
- an additional fiber.
A flame retardant continuous filament yam comprising at least one flame retardant fiber comprising MXD6 compounded or dispersed with a non-halogen flame retardant additive prior to or during fiber extrusion, wherein the non-halogen flame retardant additives are present at a concentration of from about 5% to about 20% by weight of said fiber and are selected from the group consisting of melamine polyphosphate (MPP), zinc diethylphosphinate (DEPZn), aluminum diethylphosphinate (DEPAI), silicotungstic acid (SiTA), melamine cyanurate (MC) and combinations thereof;
- said fiber having fabric properties of wear-resistance and durability when formed into a fabric, batting or garment, is self extinguishing in a vertical flammability test ASTM D6413, wherein said flame retardant fiber is continuous;
- and
- an additional continuous filament fiber.
Dependencies are inferred from the claim text.