Improvements in and relating to the treatment of textile materials with rubber

Abstract

Abstract Rubber is deposited from aqueous dispersions on to textile fibres, e.g. of natural or artificial cellulose, silk or wool, by pretreating the fibres with an aqueous solution of a cationic soap compound which gives a positive ion comprising a long-chain aliphatic residue and subsequently immersing the fibres in the aqueous rubber dispersion. The cationic soap compounds comprise quaternary ammonium, phosphonium or sulphonium compounds containing an aliphatic residue of 8 or more carbon atoms such as cetyl pyridinium bromide, cetyl-trimethyl-ammonium chloride or bromide and cetyl-dimethyl-sulphonium methyl sulphate. The treatment may be applied to loose fibres at any stage during manufacture into yarn, fabric or felt. Felts may be made by treating carded webs. Yarn may be treated in hank form. The fibres may be wetted with a dilute sodium carbonate solution prior to immersion in the rubber latex. Oils, fats, waxes, and colouring matter may be added to the dispersions of rubber, balata, and guttapercha. Wool may be mildly oxidized by treatment with hydrogen peroxide or chlorine as gas or in aqueous solution prior to treatment with the rubber dispersion.ALSO:Rubber is deposited from aqueous dispersions on to textile fibres, e.g. of natural or artificial cellulose, silk or wool, by pretreating the fibres with an aqueous solution of a cationic soap compound which gives a positive ion comprising a long chain aliphatic residue and subsequently immersing the fibres in the aqueous rubber dispersion. The cationic soap compounds comprise quaternary ammonium, phosphonium or sulphonium compounds containing an aliphatic residue of 8 or more carbon atoms such as cetyl - pyridinium bromide, cetyl - trimethylammonium chloride or bromide and cetyl-dimethyl-sulphonium methyl sulphate. The treatment may be applied to loose fibres at any stage during manufacture into yarn, fabric or felt. Felts may be made by treating carded webs. Yarn may be treated in hank form. The fibres may be wetted with a dilute sodium carbonate solution prior to immersion in the rubber latex. Oils, fats, waxes, and colouring matter may be added to the dispersions of rubber, balata, and guttapercha. Wool may be mildly oxidized by treatment with hydrogen peroxide or chlorine as gas or in aqueous solution prior to treatment with the rubber dispersion.

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