..BECHDE....FRGB....LI............................R0267681EUROPEAN PATENT APPLICATIONA319910313EP87308464.419870924enenen91837619861014US19910313199111198805181988204 4D 06M 15/41 AdeBehandeln von faserigen Polyamid-TextilgebildenenTreating fibrous polyamide articlesfrTraiter des articles en polyamides fibreuxMINNESOTA MINING AND MANUFACTURING COMPANY0030041041843EPO 7A/SMW3m3M Center, P.O. Box 33427St. Paul, Minnesota 55133-3427USPayet, George L. c/o Minnesota Mining andManufacturing Company 2501 Hudson RoadSt. Paul Minnesota 55144-1000USChang, John Cheng-Chung c/o Minnesota Mining andManufacturing Company 2501 Hudson RoadSt. Paul Minnesota 55144-1000USWilhelm, Stefanet al000751213M Laboratories (Europe) GmbH Office of Intellectual Property Counsel Hansastrasse 941453 NeussDEBECHDEFRGBLI19910313199111

A method for providing fibrous polyamide materials with stain resistance is provided. The method comprises contacting the fibrous polyamide materials with an aqueous solution comprising a normally solid, water-soluble, partially sulfonated novolak resin, which comprises the condensation product of at least one phenolic compound and an aldehyde, and a water-soluble divalent metal salt.