Exhaust process for dyeing and/or improving the flame resistance of aramid fibers
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United States of America Patent
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Dec 29, 1992
Issued Date -
N/A
app pub date -
Sep 13, 1990
filing date -
Dec 30, 1987
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Abstract
Aramid and aramid-blend fabrics are dyed or flame-retardant treated or both dyed and flame-retardant treated using conventional heat dyeing equipment. Octylpyrrolidones, tributyl phosphine oxide and mixtures of N-cyclohexyl-2-pyrrolidone with available dye carriers are used as diffusion-promoting agents for dyes, flame retardant agents or both. Odor-free, flame resistant, colored or colored and highly flame resistant products result.
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