Patent GB-929468-A (GB)
Title: Crease-proofing and shrink-proofing of cellulosic textile materials
IPC: D06M13/278
Filed: 1959-07-21
Abstract: Textile materials comprising cellulosic fibres are creaseproofed and shrinkproofed by reaction with a di(2-hydroxyalkyl)sulphoxo compound of the formula HOA-X-AOH in which A is -CH2CH2- or -CH(CH3)CH2-group and X is an -SO2-, -SO-, -SO-R-SO-or -SO2-R-SO2- group, where R is a C1-C6 alkylene group, a phenylene group or an alkyl arylene group of the formula -CH2C6H4CH2-, the reaction being carried out by heating in the presence of an alkaline catalyse.  The di(2-hydroxyalkl) sulphoxo compound is preferably applied to the fabric as an aqueous solution having a concentration of 2-20% by weight and containing 0,5-5% by weight of the alkaline catalyst which may be a quarternary ammonium hydroxide or an alkali metal carbonate, bicarbonate, hydroxide, acetate, phosphate or metasilicate.  After removal of excess liquid, the material may be dried and cured by heating at a temperature of 250 DEG -450 DEG F. for a period varying from between 1/ 2 to 2 minutes and 1 to 2 hours.  Specification 664,795 is referred to.ALSO:Textile materials comprising cellulosic fibres are creaseproofed and shrinkproofed by reaction with a di(2-hydroxyalkyl)sulphoxo compound of the formula HOA-X-AOH in which A is a -CH2CH2-or-CH(CH3)CH2-group and X is an -SO2-, -SO-, -SO-R-SO-or -SO2-R-SO2- group, where R is a C1-C6 alkylene group, a phenylene group or an alkyl arylene group of the formula -CH2C6H4CH2-, the reaction being carried out by heating in the presence of an alkaline catalyst. The di(2-hydroxyalkyl) sulphoxo compound is preferably applied to the fabric as an aqueous solution having a concentration of 2-20% by weight and containing 0.5-5% by weight of the alkaline catalyst which may be a quaternary ammonium hydroxide or an alkali metal carbonate, bicarbonate, hydroxide, acetate, phosphate or metasilicate.  After removal of excess liquid, the material may be dried and cured by heating at a temperature of 250 DEG -450 DEG F. for a period varying from between 1/2 to 2 minutes and 1 to 2 hours.  The treating solution may also contain up to 5% by weight of softening and water repellent agents, such as quaternary ammonium compounds having a long-chain hydrocarbon group, e.g. stearamidomethyl pyridinium chloride, stearyl pyridinium chloride and octadecyloxymethyl pyridinium chloride, and 0.5-5% by weight of creaseproofing and stiffening agents such as aqueous dispersions of water-insoluble linear addition polymers of one or more monoethylenically unsaturated monomeric compounds, e.g. copolymers of acrylic, methacrylic and itaconic acids with esters of acrylic, methacrylic, itaconic, maleic, fumaric or citraconic acids with monohydric alcohols, vinyl esters of carboxylic acids, vinyloxyalkyl esters, vinyl ethers, acrylonitrile, methacrylonitrile, acrylamide, methacrylamide and N substituted amides, vinyl chloride, vinyl bromide, vinylidene chloride, vinylidene fluoride, vinylidene cyanide, 1-1-chloro-1-fluoro-ethylene, ethylene, styrene, 2-vinyl -pyridine, 4-vinyl pyridine and 2-methyl-5-vinyl -pyridine, dispersed with non-ionic dispersing agents numerous examples of which are given.  Alternatively these auxiliary treating agents may be applied before or after the sulphoxo compound.  Dyed textile materials may be treated but the treating solution may contain pigments and/or dyes which are applied with the creaseproofing and shrinkproofing agent. Alternatively the textile material may be printed or dyed after the creaseproofing and shrinkproofing treatment.  Yarns, threads, masses of loose fibres, and woven, knitted or non woven fabrics comprising cotton, viscose rayon, cuprammonium cellulose rayon, linen or ramie may be treated.  The textile materials may subsequently be bleached with hypochlorites.  Specifications 664,795 is referred to.