Patent ID: 6420044
Filing Date: 2002-07-16
Classification: D01F,Y10T

Abstract:
A masterbatch concentrate for addition to a fiber-forming polyamide to form an acid dye stain-resistant fiber-forming polyamide, said concentrate comprising a reagent and a carrier therefor wherein said reagent has the formula: wherein:Q and Z are moieties which associate with free acid dye sites in said polyamide; a is an integer from 0 to 2; b is an integer from 1 to 4; and R is selected from the group consisting of aliphatic, aromatic or alicyclic hydrocarbyl groups; and said carrier is selected from the group consisting of: (A) a terpolymer comprising from about 56% to about 94.5% by weight of at least one alpha-monoolefin having 2 to 8 carbon atoms, about 5% to about 40% by weight of an ethylene-&agr;, &bgr; unsaturated carboxylic acid (1) C1-C4 alkyl or (2) glycidyl ester and from about 0.5% to about 4.0% by weight of an internal anhydride of an ethylenically unsaturated carboxylic acid; (B) a semi-crystalline thermoplastic polyester having a melting point of about 235Â° C. or less; (C) a semi-crystalline thermoplastic polyamide with a melting point of about 235Â° C. or less; and (D) mixtures thereof.