Patent GB-841640-A (GB)
Title: Water-soluble latent curing catalysts for textile treatment resins
Inventor: MOYSE JAMES ALBERT
IPC: D06P1/00
Filed: 1957-06-12
Abstract: A composition suitable for treating textile materials comprises an aqueous solution containing (1) a nitrogenous resin-forming composition, such as the methylol derivatives or the methyl, ethyl, propyl and butyl-ethers of methylol derivatives of monomeric or polymeric compounds containing a plurality of amino or mono-substituted amino groups, the compounds being known to form resins by condensation with formaldehyde, and (2) a water-soluble halogens-1 : 3 : 5-triazine as latent curing catalyst.  Suitable amino compounds are monomeric nitrogen compounds, e.g. urea, thiourea, substituted ureas and thioureas, dicyandiamide, dicyandiamidine, biguanides, amides, carbamates, allophanates, heterocyclic compounds, e.g. aminotriazines, ureins, ureides, imidazolidones, triazones and hydantoins or mixtures of such compounds, and polymeric nitrogen compounds, e.g. polymeric amides made by the reaction of dibasic acids with diammes.  The halogeno-1:3:5-triazines used as latent curing catalysts may be mono- and di-halageno-1:3:5-triazines which contain, attached to at least one of the carbon atoms of the triazine ring through a nitrogen, oxygen or sulphur atom, an organic radical carrying either a negatively charged solubilising group, e.g. a sulphonic or carboxylic group, or a positively charged solubilising group, e.g. a quaternary ammonium group. Triazine compounds containing sulphonic and/or carboxylic acid groups may be used in the form of their salts, e.g. with alkali metals.  Several suitable compounds are specified. Preferably, however, the triazine compounds used are water-soluble nitro-dyestuffs containing a mono-or di-halogeno-1:3:5-triazinyl radical or water-soluble dyestuffs of the azo, anthroquinane or phthalocyanine series containing a mono- or di-halogeno-1:3:5-triazinyl radical, so that the textile materials treated are simultaneously coloured.  The solution may also contain alkali-metal thio-cyanates, polyhydroxy compounds, e.g. polyvinyl alcohol, cellulose ethers, starches or starch ethers, proteinaceous materials, e.g. casein and gelatin, and/or surface-active agents. The resin may be cured on the treated textile materials by heating to between 100 DEG C. and 150 DEG C. for 1 to 15 minutes. Specifications 209,723, 298,494, 772,030, 774,925, 775,308, 780,591, 781,930, 784,221, 785,120, and 785,222 are referred to.ALSO:Textile materials are treated with an aqueous solution containing (1) a nitrogenous resinforming composition, such as the methylol derivatives or the methyl, ethyl, propyl and butyl ethers of methylol derivatives of monomeric or polymeric compounds containing a plurality of amino or monosubstituted amino groups, the compounds being known to form resins by condensation with formaldehyde, and (2) a water-soluble halogeno-1 : 3 : 5-triazine as latent curing catalyst, whereby they are given a crease and/or shrink-resistant finish, stiffened and, when they are given a mechanical finishing treatment, e.g. embossing, pleating and glazing, are rendered more durable to washing. Suitable amino compounds are monomeric nitrogen compounds, e.g. urea, thiourea, substituted ureas and thioureas, dicyandiamide, dicyandiamidine, biguanides, amides, carbamates, allophanates, heterocyclic compounds, e.g. aminotriazines, ureins, ureides, imidazolidones, triazones and hydantoins or mixtures of such compounds, and polymeric nitrogen compounds, e.g. polymeric amides made by the reaction of dibasic acids with diamines.  The halogeno-1 : 3 : 5-triazines used as latent curing catalysts may be mono- and di-halogeno-1 : 3 : 5-triazines which contain, attached to at least one of the carbon atoms of the triazine ring through a nitrogen, oxygen or sulphur atom, an organic radical carrying either a negatively charged solubilising group, e.g. a sulphonic or carboxylic group, or a positively charged solubilising group, e.g. a quaternary ammonium group.  Triazine compounds containing sulphonic and/or carboxylic acid groups may be used in the form of their salts, e.g. with alkali metals. Several suitable compounds are specified. Preferably, however, the triazine compounds used are water-soluble nitro dyestuffs containing a mono- or di-halogen-1 : 3 : 5- triazinyl radical or water-soluble dyestuffs of the azo, anthraquinone or phthalocyanine series containing a mono- or di-halogeno-1 : 3 : 5-triazinyl radical, so that the textiles are simultaneously coloured.  The treating solutions may also contain alkali-metal thiocyanates, polyhydroxy compounds, e.g. polyvinyl alcohol, cellulose ethers, starches or starch ethers, proteinaceous materials, e.g. casein or gelatin, and/or surface-active agents, and after application, e.g. by padding, the treated textile materials are preferably heated to between 100 DEG C. and 150 DEG C. for 1-15 minutes to cure the resin.  Suitable textile materials are cotton, wool, silk, viscose, rayon and polyamide fibres.  When white cellulosic fibres are finished they give less loss in strength and yellowing or subsequent hypochlorite bleaching than resin finished fabrics cured using conventional catalysts.  The Provisional Specification also describes the treatment of polyethylene terephthalate fibres.  Specifications 209,723, 298,494, 772,030, 774,925, 775,308, 780,591, 781,930, 784,221, 785,120 and 785,222 are referred to.