Improvements in water-proofing textile materials

摘要

Textile materials are waterproofed by impregnating the material with a solution or emulsion of a quaternary ammonium compound obtainable according to the process described in Specification 478,571 and heating, if desired after drying. Suitable solvents include water, alcohol and carbon tetrachloride. The compounds may be used in combination with mixed polymers from unsaturated carboxylic acids or derivatives thereof and olefinic compounds and containing an aliphatic radical having at least 12 carbon atoms in one chain, such a radical being present in at least one of the components or introduced after the polymerization. Examples of such mixed polymers are those from maleic acid or anhydride and vinyl octadecyl ether, from maleic acid monomethyl ester and stearic acid vinyl ester, and from maleic acid monododecyl ester and vinyldodecyl ether, described in Specifications 464,860 and 472,613. The textiles may also be treated with synthetic aldehyde resins from a phenol, an amine or an amide, or with the product of the primary stage of the synthesis, or with aldehydes or substances yielding aldehydes. Textile materials specified are cotton, wool, silk, viscose or cellulose acetate artificial silk and mixtures. In typical examples: (6) loose spun rayon is first treated with an emulsion containing paraffin, polyvinyl alcohol or sodium polyacrylate, and the mixed polymer from maleic anhydride and vinyloctadecyl ether, dried and then impregnated with the pyridinium compound from chloromethyl-dodecylphenol and heated at 110-120 DEG C; (10) artificial silk or cotton fabric is treated with an aqueous solution containing a pyridinium compound from chloromethyl isododecylphenol, dimethylol-urea and tartaric acid and heated at 120 DEG C. Samples have been furnished under Sect. 2 (5) of products obtained by impregnating dyed rayon crzepe with aqueous solutions of the pyridinium compound of a commercial mixture of chloromethyl-dodecyl-, -tridecyl-, and -tetradecyl-phenol, and (A) melamine, formaldehyde, and lactic acid, (B) phenol, formaldehyde, and lactic acid, and subsequently squeezing, drying and heating.