PROCESS FOR IMPARTING STAIN-RESIST AGENT

摘要

A process for imparting stain resistance to polyamide substrates in continuous processes such as those using a Fluidyer TM apparatus or a Flexnip TM applicator and involving the application of a stain-resist composition containing a mixture of a hydrolyzed copolymer of maleic anhydride and one or more ethylenically unsaturated aromatic monomers with a sulfonated phenol-formaldehyde condensation product is disclosed wherein the stain-resist composition is applied at a pH between about 1.5 and about 3.0 in the prescence of an anionic surfactant in the form of an alkyl aryl sulfonic acid or an alkyl aryl sulfonate salt.