Patent GB-868935-A (GB)
Title: Process for fixing pigments on foils and fibrous structures
IPC: D06P1/44
Filed: 1957-07-08
Abstract: A composition used in the fixation of pigments on fibres and foils comprises an aqueous solution or suspension of a compound of high molecular weight (above 800) containing carboxyl groups and an alkylene imine compound of the general formula:  <FORM:0868935/IV (a)/1> in which R represents the residue of a primary aliphatic amine containing 4-10 carbon atoms or of a primary cycloaliphatic amine or of an aliphatic, aromatic or cycloaliphatic hydrocarbon, or the group:  <FORM:0868935/IV (a)/2> in which X represents an alkyl or cycloalkyl group and Y represents an aryl or cycloalkyl group, or the group: p   <FORM:0868935/IV (a)/3> in which X represents an alkyl group, Y represents an aryl or cycloalkyl group and X is linked to Y to close a heterocyclic ring.  The pigment may be included in the composition or applied separately.  Suitable high-molecular weight compounds containing carboxyl groups are incompletely condensed reaction products of polyhydric alcohols with polycarboxylic acids, of polycarboxylic acids with polyamines and of amino-carboxylic acids.  The pigments may be inorganic pigments, e.g. metal powders, titanium dioxide, zinc oxide, iron oxides, chromium oxide, carbon black, ultramarine and lead colours, or organic pigments, e.g. vat dyestuffs, azo dyestuffs, phthalocyanines and basic dyestuffs converted into lakes.  The composition may also contain dressing agents, delustring agents, softening agents and hydrophobizing agents and may be thickened with alginates, vegetable mucilages, dextrin, polyvinyl alcohol or an oil-in-water emulsion containing as the inner phase an organic solvent which is insoluble or sparingly soluble in water, e.g. benzine.  After application to the foil or fibre the latter is steamed or dry heated at a temperature above 100 DEG C., during which treatment the high molecular weight compound containing carboxyl groups is said to react with the ethylene imine derivative. Specification 864,021 is referred to.ALSO:Pigments are fixed on foils, fibrous materials and structures made from fibres by applying thereto simultaneously or in turn a pigment and an aqueous solution or suspension of a compound of high molecular weight (above 800) containing carboxyl groups and an alkylene imine compound of the general formula:-  <FORM:0868935/IV(c)/1> in which R represents the residue of a primary aliphatic amine containing 4-10 carbon atoms or of a primary cycloaliphatic amine or of an aliphatic, aromatic or cycloaliphatic hydrocarbon, or the group:-  <FORM:0868935/IV(c)/2> in which X represents an alkyl or cycloalkyl group and Y represents an aryl or cycloalkyl group, or the group:-  <FORM:0868935/IV(c)/3> in which X represents an alkyl group, Y represents an aryl or cycloalkyl group and X is linked to Y to close a heterocyclic ring, and then, if desired after drying, steaming or dry heating at a temperature above 100 DEG C.  Inorganic pigments, e.g. metal powders, titanium dioxide, zinc oxide, iron oxides, chromium oxide, carbon black, ultramarine and lead colours, and organic pigments e.g. vat dyestuffs, azo dyestuffs, phthalocyanines and basic dyestuffs converted into lakes, may be applied.  Suitable highmolecular weight compounds containing carboxyl groups, which may be applied in the form of their water-soluble salts or as dispersions, are cellulose ether carboxylic acids, polyacrylic and polymethacrylic acids and copolymers thereof or of crotonic or maleic acid with esters of acylic or methacrylic acid, vinyl chloride, vinyl acetate or styrene, and incompletely condensed reaction products of polyhydric alcohols with polycarboxylic acids, of polycarboxylic acids with polyamines or of amino-carboxylic acids.  The treating composition may also contain dressing agents, delustring agents, softening agents and hydrophobizing agents and may be thickened with alginates, vegetable mucilages, dextrin, polyvinyl alcohol or an oil-in-water emulsion containing as the inner phase an organic solvent which is insoluble or sparingly soluble in water, e.g. benzine.  The pigments may be fixed together with other types of dyestuffs, e.g. vat dyestuffs, mixtures of stabilized diazo compounds and naphtholates and water-soluble esters of leuco compounds of vat dyestuffs, by steaming for a short time without heat treatment. In printing a stabilized diazo compound together with a pigment on a fabric that has been grounded with a naphtholate, a potentially acid substance, e.g. an ammonium salt, is added to ensure fixation of the pigment dyestuff after steaming.  Examples describe the printing of cotton, regenerated cellulose, polyamide and polyethylene glycol terephthalate fabrics.  Specification 864,021 is referred to.