Divalent metal salts of sulfonated novolak resins and methods for treating fibrous polyamide materials therewith
OwnerJohn C. Changinventor
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Abstract
Compositions comprising normally solid, water-soluble divalent metal salts of partially sulfonated novolak resins are provided. These divalent salts of partially sulfonated novolak resins ae useful for imparting to fibrous polyamide materials stain resistance to natural and synthetic acid colorants. Also provided are methods of preparing these resins, methods of treating fibrous polyamide materials with these resins, and fibrous polyamide materials so treated.
Claims14
A method for imparting fibrous polyamide materials with stain resistance to natural and synthetic acid colorants comprising contacting said materials with an aqueous treating solution comprising a sufficient amount of a sulfonated novolak resin composition comprising a normally solid, water-soluble divalent metal salt of a partially sulfonated novolak resin, said salt being substantially free of sulfonic acid moieties, in the treating solution for a sufficient time at a given temperature to impart the stain resistance.
Dependencies are inferred from the claim text.