An N-alkoxymethyl-N'-(1,1-dihydroperfluoroalkyl)urea is applied to cotton fabric with an acid catalyst to impart high oil repellency and moderate water repellency which are durable to home laundering. The finish is believed to be based on the formation of a highly insoluble fluorinated bis-urea. Stain repellency and release properties, judged with several common stains, were good, except with dirty motor oil. Oily soil re deposition was intermediate between older and newer types of commercial fluorochemical finishes.
American Association of Textile Chemists and Colorists, "AATCC Technical Manual," New York, Howes Publishing Co., Inc., 1967: (a) 118-1966T; (b) 22-1967.
2.
American Society for Testing and Materials , "1964 Book of ASTM Standards," Philadelphia, Pa., 1964: (a) D1175-64T; (b) D1424-63 ; (c) D1682-64 ; (d) D629-59T; (e) D1295-60T ; (f) D737-46.
3.
Grajeck, E.J. and Peterson, W.H., "Oil and Water Repellent Fluorochemical Finishes for Cotton," Textile Res. J.32, 320-331 (1962).
4.
Sherman, P.O. , "Fluorochemical Soil Release Finishes," Presented at 17th Chemical Finishing Conference, Washington, D. C., October 10, 1968.
5.
U. S. Federal Supply Service, " Textile Test Methods," Fed. Spec. CCC-T-191b, Method 5202, Washington, D. C., U. S. Government Printing Office , 1951.
