Simultaneously dyed and flame-retarded fabric blends
AssigneeBurlington Industries, Inc.
InventorsJames R. Johnson, Randolph L. Finley
Life of this patent
Estimating the term…
Abstract
Synthetic/cellulosic blend textile fabrics are simultaneously dyed and the synthetic component simultaneously treated to impart flame resistance in a single step with good color yield. Additional fabric finishing may be used to impart flame resistance to the cellulosic component of the fabric.
Claims25
A process for simultaneously dyeing and imparting flame resistance to a polyester/cellulosic blend fabric, containing at least 35% by weight polyester, comprising the successive steps of:
- (1) applying a dyebath containing a tinctorial amount of at least one dye for the polyester fibers, a tinctorial amount of at least one dye for the cellulosic fibers, and a flame retarding amount of a cyclic phosphonate ester flame retardant to the polyester/cellulosic blend fabric;
- (2) drying the fabric and heating the fabric to allow the polyester dye and flame retardant to thermosol into the polyester fibers;
- (3) treating the fabric to fix the dye on to the cellulosic fibers;
- and
- (4) washing the fabric to remove any unfixed dye or components of the dyebath from the fabric.
A process for simultaneously dyeing and imparting flame resistance to a polyester/cellulosic fabric, containing at least 35% by weight polyester, comprising the successive steps of:
- (1) applying a dyebath containing a tinctorial amount of at least one dye for the polyester fibers and a tinctorial amount of at least one dye for the cellulosic fibers, and a flame retarding amount for the polyester fibers of a cyclic phosphonate ester flame retardant to the polyester/cellulosic blend fabric;
- (2) drying the fabric and heating the fabric to allow the polyester dye and flame retardant to thermosol into the polyester fibers;
- (3) treating the fabric to fix the dye onto the cellulosic fibers;
- (4) washing the fabric to remove any unfixed dye or components of the dyebath from the fabric;
- and thereafter
- (5) applying a flame retardant amount for the cellulosic fibers of a tetrakis-(hydroxymethyl) phosphonium salt flame retardant to the fabric to provide an LOI value of at least 27.0% after 50 launderings at 49.degree. C. to the fabric thus treated.
A flame resistant polyester/cotton fabric containing between 40% and 65% of polyester, with Limiting Oxygen Index of at least 27% after 50 launderings at 120.degree. F.
A flame-resistant polyester/cotton fabric containing between 40% and 65% of polyester, with a Limiting Oxygen Index of at least 27% after 100 launderings at 120.degree. F.
A flame-resistant polyester/cotton fabric containing between 40% and 65% of polyester, which when tested in accordance wit FTM-191-5903 has a char length of less than 15.2 cm and afterglow and afterburn values of less than 1 second after 100 home launderings at 49.degree. C.
Dependencies are inferred from the claim text.