Patent GB-830749-A (GB)
Title: Process for improving textile materials
IPC: D06M15/263
Filed: 1956-08-16
Abstract: Textile materials are impregnated, coated or printed with an aqueous preparation which contains (a) a latex of a polymer or copolymer derived from a monomeric ethylenically unsaturated compound, (b) an aqueous dispersion of a water-insoluble, organic solvent-soluble ether of a hardenable formaldehyde-amino compound condensation product and (c) a water-soluble hardenable formaldehyde-amino compound condensation product or a water-soluble ether thereof, the treated material then being dried and heated to harden the resins. The process may be employed for effecting an anti-crease treatment of the textile, or for binding pigments in the production of pigment prints or dyeings, or for the production of flock prints, the flock being applied to the coated textile prior to drying and heating. Polymers of component (a), which may contain groups capable of cross-linking with components (b) and (c), are derived from vinyl esters, vinyl alkyl ketones, vinyl and vinylidene halides, vinyl aryl compounds, acrylic and methacrylic acids and their esters and amides, a -chloro-acrylic-, crotonic-, maleic- and fumaric-acid amides, acrylonitrile, polymerizable olefines and vinyl pyridines and their various copolymers, and many examples are given.  Suitable components (b) are condensation products of formaldehyde with urea, thiourea, guanidine, acetylene-diurea, dicyandiamide, uron, melamine, acetoguanamine, benzoguanamine or formoguanamine which have been etherified with a water-immiscible alcohol such as butyl, amyl, hexyl, cyclohexyl, benzyl, dodecyl, oleyl or abietyl alcohol, and the condensation products may also contain residues of acids such as stearic acid.  Dispersions of these condensation products are obtained with the use of such dispersing agents or protective colloids as casein, gelatine and ethylene oxide condensation products of alcohols, acids or amines of high molecular weight.  The water-soluble formaldehyde condensation products of component (c) may be derived from the aminocompounds mentioned above for use in preparing the condensation product of component (b) and, instead of the free methylol compounds, their water-soluble ethers with lower alcohols, e.g. methanol or ethanol, may be employed.  The process may be applied to textiles of cotton, linen, regenerated cellulose, wool, silk, cellulose esters, nylon, polyesters or polyacrylonitrile.  In the production of pigment prints or dyeings, the textile may be previously treated with the pigment or alternatively the pigment may be incorporated in the aqueous preparation, in which latter case white or coloured reserves may previously be applied to the textile. Discharge prints may be obtained by impregnating the textile with the aqueous preparation containing a vat dyestuff pigment and then locally discharging with a paste containing a reducing agent.  The aqueous preparation may contain hardening catalysts such as acids or acid-liberating compounds, and thickeners such as alginates or tragacanth.  Numerous examples are given.ALSO:An aqueous preparation for treating textile materials (see Groups IV (c) and VIII) contains (a) a latex of a polymer or copolymer derived from a monomeric ethyleneically unsaturated compound, (b) an aqueous dispersion of a water-insoluble organic solvent-soluble ether of a hardenable formaldehyde-amino compound condensation product, and (c) a water-soluble hardenable formaldehyde-amino compound condensation product or a water-soluble ether thereof.  Polymers of component (a), which may contain groups capable of cross-linking with components (b) and (c), are derived from vinyl esters, vinyl alkyl ketones, vinyl and vinylidene halides, vinyl aryl compounds, acrylic- and methacrylic acids and their esters and amides, a -chloroacrylic-, crotonic-, maleic- and fumaric-acid amides, acrylonitrile, polymerizable olefins and vinyl pyridines and their various copolymers, and many examples are given.  Suitable components (b) are condensation products of formaldehyde with urea, thiourea, guanidine, acetylene-diurea, dicyandiamide, uron, melamine, acetoguanamine, benzoguanamine or formoguanamine which have been etherified with a water-immiscible alcohol such as butyl, amyl, hexyl, cyclohexyl, benzyl, dodecyl, oleyl or abietyl alcohol, and the condensation products may also contain residues of acids such as stearic acid. Dispersions of these condensation products are obtained with the use of such dispersing agents or protective colloids as casein, gelatine and ethylene oxide condensation products of alcohols, acids or amines of high molecular weight. The water-soluble formaldehyde condensation products of component (c) may be derived from the amino-compounds mentioned above for use in preparing the condensation product of component (b) and, instead of the free methylol compounds, their water-soluble ethers with lower alcohols, e.g. methanol or ethanol, may be employed. The aqueous preparation may contain pigments, hardening catalysts such as acids or acid-liberating compounds, and thickeners such as alginates or tragacanth.  Numerous examples are given.