Compositions useful for improving the fastness of dyeings on cellulosic substrates: precondensates of N-methylol compound with polyalkylene polyamine-epihalohydrin product
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United States of America Patent
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Jun 5, 1984
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N/A
app pub date -
May 10, 1982
filing date -
May 14, 1981
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Expired
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Abstract
The wet fastness properties of direct or reactive dyeings on cellulosic substrates are improved by aftertreatment with a precondensate or mixture of (A) the product of reacting a polyalkylenepolyamine in free base or salt form with an epihalohydrin or a precursor thereof and (B) and N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amide in the presence of (C) a catalyst for the cross-linking of N-methylol compounds of the type (B) above, followed by a heat-curing step.
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