Process for providing polyamide materials with stain resistance
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United States of America Patent
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Jun 26, 1990
Issued Date -
N/A
app pub date -
Jan 29, 1990
filing date -
Mar 11, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for imparting to fibrous polyamide materials stain resistance to acid colorants is provided. The method comprises contacting the fibrous polyamide materials with an aqueous treating solution comprising polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof, and drying said substrate, said polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof being provided in a sufficient amount and having a solubility and molecular weight such that said fibrous polyamide substrate has an improved acid colorant stain resistance.
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