Dye diffusion promoting agents for aramids
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United States of America Patent
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Jan 11, 2005
Issued Date -
N/A
app pub date -
Mar 7, 1994
filing date -
Oct 31, 1990
priority date (Note) -
In Force
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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. Amides capable of swelling the aramid fibers at least 1.5% and preferably having 7 to 14 carbon atoms 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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