Composition comprising the addition product of a vinyl-sulfone dye and a secondary amine and process for dyeing a polyamide therewith
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United States of America Patent
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Aug 9, 1988
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N/A
app pub date -
Feb 5, 1987
filing date -
Feb 5, 1987
priority date (Note) -
Expired
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Abstract
This invention is directed to a dyestuff composition comprising the reaction product of a water-soluble, vinyl-sulfone type, reactive dye and a N-alkyl-amino-alkyl sulfonic acid and/or carboxylic acid or the salts thereof wherein the N-alkyl-amino-alkyl acid or salt is reacted with said dye in an amount of about 0.5 to 1.0 mole per mole of dye. This dyestuff composition is used to dye synthetic polyamides according to a process where said composition is applied to a polyamide fiber from an aqueous solution having a pH from about 3 to about 4; preferably 3.5 and then fixed to said fiber by heat.
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