Process of dyeing synthetic fabrics using high-boiling ester solvents
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United States of America Patent
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May 22, 1990
Grant Date -
N/A
app pub date -
May 4, 1987
filing date -
May 4, 1987
priority date (Note) -
Expired
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Abstract
Synthetic textile fibers are dyed in a waterless coloring composition composed of a high-boiling ester solvent and a dye that (a) is soluble to the extent of at least 1.5% in the solvent, (b) provides a depth of coloration, expressed as yield, of at least 25%, (c) imparts to the dyed fibers a lightfastness value of at least 3, and (d) provides the dyed fibers with a washfastness value of at least 3.
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