Process for simultaneously dyeing and improving the flame-resistant properties of aramid fibers
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United States of America Patent
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Jul 26, 1988
Issued Date -
N/A
app pub date -
Jun 4, 1986
filing date -
May 14, 1986
priority date (Note) -
Expired
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Abstract
Simultaneous dyeing and flame-resistant property improvement of poly(m-phenyleneisophthalamide) fibers using a swelling agent to introduce a dye and a fire retardant into the fiber. The dyed fiber has properties of strength approximating the original undyed fiber, fire retardance greater than the untreated fiber and is conveniently dyed to an unlimited range of colors with high color yield and relatively good lightfastness at a reasonable cost. An aqueous dimethylsulfoxide solution is used as the swelling agent.
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