Abstract: Fabrics constructed of high-modulus, high-tenacity, low-shrinkage polyamide fabrics are continuously dyed with acid dyes by applying at ambient temperatures a pad bath solution formulated to provide a continuous film on the fabric surface followed by drying and dry heat curing or thermosoling at elevated temperatures to fix the dye molecules inside the fibers.

Abstract: A process of printing a predetermined pattern on a poly(m-phenyleneisophthalamide)-containing textile fabric comprises the successive steps of: (a) applying a print paste, composed of a highly polar solvent selected from the group consisting of dimethylsulfoxide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, and mixtures thereof, the polar solvent adapted to swell the aramid fiber and introduce a dyestuff therein, at least one organic dyestuff that is soluble in the polar solvent, a print paste thickening agent compatible with both the polar solvent and the dyestuff and water in a predetermined pattern onto the surface of the aramid textile; and (b) drying and curing the thus printed fabric at an elevated temperature sufficient to permeate and fix the dyestuff molecules inside the aramid fibers.

Abstract: A process of printing a predetermined pattern on and improving the flame resistance of a poly(m-phenyleneisophthalamide)-containing textile fabric including the successive steps of: (a) applying a print paste, composed of a highly polar solvent selected from dimethylsulfoxide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, and mixtures thereof, the polar solvent adapted to swell the aramid fiber and introduce a dyestuff therein, at least one organic dyestuff that is soluble in the polar solvent, a print paste thickening agent compatible with both the polar solvent and the dyestuff, a flame retardant and water in a predetermined pattern onto the surface of the aramid textile; and (b) drying and curing the thus printed fabric at an elevated temperature sufficient to permeate and fix the dyestuff and the flame retardant molecules inside the aramid fibers.

Abstract: Disperse dyes are dischargeable to white with a print paste including a thickening agent, lithium hydroxide, an organic acid, a polyethylene glycol compound, a polyoxyethylene sorbitan fatty acid ester and a polyalkyleneglycol ether. The print paste discharges a number of known disperse dyes, some which have been conventionally thought of as being alkali-resistant. A method of discharge printing of synthetic textile materials (e.g. polyester) is also disclosed.

Abstract: A process for simultaneously bulking and dyeing linear polycarbonamide fibers which comprises treating the same with a solution of an alcohol containing a tinctorial amount of at least one dyestuff therein, and thereafter washing the treated fibers in hot water, soaping, and washing in hot and cold water and drying.

Abstract: A process for bulking linear polycarbonamide fibers which comprises treating the same with a solution or dispersion of an alcohol, thereafter washing in hot and cold water and drying.