Stain-resistant nylon carpets impregnated with condensation prod

Details Stain-resistant nylon carpets impregnated with condensation prod Stain-resistant nylon carpets impregnated with condensation prod

1985-08-22

1986-06-03

McCamish, Marion C.

Stock material or miscellaneous articles

Pile or nap type surface or component

With coating, impregnation, or bond

252 87, 252 875, 252 88, 4274301, 4274342, 4274346, 428 97, B32B 302

Patent

active

045929408

ABSTRACT:
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.

REFERENCES:
patent: 3118723 (1964-01-01), Harding
patent: 3178309 (1965-04-01), Harding
patent: 3322488 (1967-05-01), Freeman
patent: 3663157 (1972-05-01), Gilgien et al.
patent: 3765839 (1973-10-01), Mueller et al.
patent: 3849162 (1974-11-01), Mueller et al.
patent: 4192754 (1980-03-01), Marshall
patent: 4295852 (1981-10-01), Walz et al.
patent: 4302202 (1981-11-01), Summer et al.
patent: 4317736 (1982-03-01), Marshall
patent: 4325890 (1982-04-01), Reitz et al.

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