Process for improving the flame-retardant properties of printed shaped articles from aramid fibers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 10, 1987
Issued Date -
N/A
app pub date -
Jun 4, 1986
filing date -
May 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Other Claims data not available