A method for improving the wet - and dry wrinkle resistance of cellulosic textiles

摘要

Polyfunctional organic compounds suitable for use in the creaseproofing of cellulosic textile materials are produced by the reaction of a polymethylol aminoplast resin precondensate, e.g. dimethylol urea, tetra- or penta-methylol melamine, acrolein - urea - formaldehyde, dimethylol cyclic ethylene urea, dimethylol-dihydroxy-cyclic ethylene urea, trimethylol-acetylene diurea, tetramethylolacetylene diurea, dimethylol - N - ethyl - triazane, dimethylol - N - hydroxyethyl - triazane, N,N1-ethylene - bis - dimethyloltriazane or dimethyloluran resin precondensates, with a monoester of a compound of the formula HO-CH2CH2S(O)x-CH2CH2OH in which x is 1 or 2, the monoester preferably being the sulphate, phosphate or thiosulphate which may be in the form of their alkali metal salts, or an organic ester containing 1-12 carbon atoms, preferably at 80-190 DEG C.ALSO:Cellulosic textile materials, e.g. fibres, yarns and fabrics comprising cotton, linen, jute, flax or regenerated cellulose fibres alone or in admixture with glycol-terephthalate, polyacrylic or nylon fibres, are crease-proofed by impregnating them with a textile resin catalyst and a polyfunctional organic compound having at least one functional group reactive to cellulose under textile resin curing conditions and at least one functional group substantially inert under the curing conditions but reactive to cellulose in the presence of a strong aqueous base and heating the textile materials in a dry unswollen condition to chemically fix the polyfunctional compound to the textile materials by reaction of the functional group reactive to cellulose under textile resin curing conditions and then, if desired, impregnating them with a strong aqueous base to further chemically fix the compound to the textile materials by reaction of the functional group reactive to cellulose in the presence of a strong aqueous base while the textile materials are in a wet swollen condition. Suitable acid reactive groups reactive with the cellulose under textile resin curing conditions are methylol, acetal, allcylated methylol and aldehyde groups and suitable base reactive groups are epoxy, halohydrin and carbonyl, acetylenic, sulphone and sulphoxide activated groups, e.g. -CH2CH2-R-R1 in which R is a carbonyl, sulphone, sulphoxide or acetylenic group and R1 is sulphatoethyl, alkalimetal sulphatoethyl, phosphatoethyl, alkali metal phosphatoethyl, thiosulphatoethyl or alkali-metal thiosulphatoethyl, quaternary ammonium ethyl halides, vinyl or substituted vinyl. The polyfunctional compound may be produced either before application to the textile material or in situ by the reaction of a polymethylol textile resin precondensate, e.g. dimethylol urea, tetra-or pentamethylol melamine, acrolein-urea-formaldehyde resin, dimethylol cyclic ethylene urea, dimethyloldihydroxy cyclic ethylene urea, trimethylolacetylene diurea, tetramethylolacetylene diurea, dimethylol-N-ethyl-triazone, dimethylol-N-hydroxyethyl-triazone, N, N1-ethylene-bio-dimethyloltriazone and dimethyloluron, or an epoxy or acetal textile resin and mono-ester of di-b -hydroxyethyl-sulphone or di-b -hydroxyethyl-sulphoxide monoester being the sulphate, phosphate or thiosulphate preferably in the form of their alkali metal salts or an organic ester containing 1-12 carbon atoms. The polyfunctional compound may be applied to the textile materials as an aqueous solution which may also contain a poly-ethylene softener and the textile resin catalyst, e.g. magnesium chloride, zinc nitrate, zinc fluoroborate, monoethanolamine hydrochloride and 2-amino-2-methyl-propanol nitrate, and the textile material then dried and heated to 100-200 DEG C. It may then be washed and treated at 20-100 DEG C. with the aqueous solution of the base which has a pH of at least 10 as a 1% by weight aqueous solution, suitable bases being sodium silicate, hydroxide or carbonate and potassium carbonate. Specification 997,822 is referred to.