Stain-resistant nylon carpets impregnated with condensation product of formaldehyde with mixture of diphenolsulfone and phenolsulfonic acid

Nylon carpets are rendered resistant to staining normally caused by artificial colorants such as Food, Drug and Cosmetic Red Dye No. 40 by immersing the carpets in a boiling aqueous solution of a selected phenol-formaldehyde condensation product at a pH of 4.5 or less. A particularly useful condensa...

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Bibliographische Detailangaben
Hauptverfasser: BLYTH, RANDOLPH C, UCCI, POMPELIO A
Format: Patent
Sprache:eng
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Zusammenfassung:Nylon carpets are rendered resistant to staining normally caused by artificial colorants such as Food, Drug and Cosmetic Red Dye No. 40 by immersing the carpets in a boiling aqueous solution of a selected phenol-formaldehyde condensation product at a pH of 4.5 or less. A particularly useful condensation product is that obtained by the condensation of formaldehyde with a mixture of diphenolsulfone and phenolsulfonic acid.