Patent GB-1097336-A (GB)
Title: Improvements in the treatment of carpets
Inventor: OWEN JOHN BRYN
IPC: D06M15/423
Filed: 1963-10-18
Abstract: A composition suitable for treating carpets comprises a particulate inorganic soil retardant substance, e.g. silica, alumina, zirconium oxide, barium sulphate and aluminium silicate, a film-forming substance which is a natural polymeric substance or derivative thereof containing at least one reactive -OH, =NH or -SH group, e.g. starch, starch ethers, carboxymethyl cellulose and hydroxyalkyl celluloses, glue, gelatin, casein, alginic acid and its salts, and a polyfunctional substance capable of undergoing reaction with the reactive group or groups in the film-forming substance.  The soil-retardent substance which may have a particle size of 0.1-50m and the composition may also contain surfactants, water-repellent substances, e.g. methylol stearamide, methylene-bis-stearamide and silicones, and mould-inhibiting agents, e.g. lauryl dimethylbenzyl ammonium chloride, benzisothiazolone, formaldehyde and sodium benzoate. The polyfunctional substance may be formaldehyde, acrolein, glyoxal, methylol derivatives of urea, thiourea, dicyandiamide, amides, amines, carbamates, aminotriazines, urons, ureins, ureides, imidazolines, pyrimidones and triazones and lower alkyl ethers thereof, methylol derivatives and their lower alkyl ethers of urea-formaldehyde polycondensates, polyacrylamide and addition copolymers containing acrylamide, polyacetals formed from formaldehyde, acetaldehyde, glyoxal, malondialdehyde, succindialdehyde, adipaldehyde, hydroxyadipaldehyde or terephthaldehyde with ethylene glycol, diethylene glycol, glycerol, pentaerythritol or dipentaerythritol, bis-epoxides, cyanuric chloride or bromide, dihalogeno-s-triazine derivatives or epichlorohydrin. The composition may contain an acid catalyst, e.g. ammonium dihydrogen phosphate, ammonium thiocyanate, butanolamine hydrochloride, tartaric acid, maleic acid, zinc nitrate, zinc chloride and magnesium chloride or an alkaline catalyst, e.g. an alkali or alkaline earth metal hydroxide, bicarbonate or carbonate, amines and quaternary ammonium hydroxides.ALSO:Carpets are rendered anti-soiling by applying thereto or to the textile materials thereof at some stage during the manufacture of the carpet, particulate inorganic soil retardent substance, e.g. silica, alumina, zirconium oxide, barium sulphate and aluminium silicate, a film-forming substance which is a natural polymeric substance or derivative thereof containing at least one reactive -OH, =NH or -SH group, e.g. starch, starch ethers, carboxymethyl cellulose and hydroxyalkyl celluloses, glue, gelatin, casein, alginic acid and its salts, and a polyfunctional substance capable of undergoing reaction with the reactive group or groups in the film-forming substance and bringing about the reaction.  The soil-retardent substance which may have a particle size of 0.1-50m may be applied from an aqueous medium together with or separately from the film-forming substance and polyfunctional substance, application being effected at ordinary or elevated temperatures and the treated materials then being dried at 50 DEG -110 DEG C.  The treating compositions may also contain surfactants, water repellent substances, e.g. methylol stearamide, methylene-bis-stearamide and silicones, and mould inhibiting agents, e.g. lauryl dimethylbenzyl ammonium chloride, benzisothiazolone, formaldehyde and sodium benzoate.  The polyfunctional substance may be capable of cross-linking the film-forming substance or capable of reacting with groups present in both the film forming substance and the textile material of the carpet to link the film-forming substance to the textile material by means of covalent bonds and may be formaldehyde, acrolein, glyoxal, methylol derivatives of urea, thiourea, dicyandiamide, amides, amines, carbamates, aminotriazines, urons, ureins, ureides, imidazolines, pyrimidones and triazones and lower alkyl ethers thereof, methylol derivatives and their lower alkyl ethers of urea-formaldehyde polycondensates, polyacrylamide and addition copolymers containing acrylamide, polyacetals formed from formaldehyde, acetaldehyde, glyoxal, malondialdehyde, succindialdehyde, adipaldehyde, hydroxy-adipaldehyde or terephthaldehyde with ethylene glycol, diethylene glycol, glycerol, pentaerythritol of dipentaerythritol, bis - epoxides, cyanuric chloride or bromide, dihalogeno-s-triazine derivatives or epichlorohydrin.  The polyfunctional compound may be applied together with an acid catalyst, e.g. ammonium dihydrogen phosphate, ammonium thiocyanate, butanolamine hydrochloride, tartaric acid, maleic acid, zinc nitrate, zinc chloride and magnesium chloride or with an alkaline catalyst, e.g. an alkali or alkaline earth metal hydroxide, bicarbonate or carbonate, amines and quaternary ammonium hydroxides, and the treated material then dried and baked, e.g. at 100 DEG -210 DEG C for from 5 seconds to 30 minutes.  The carpet may be made from wool, viscose rayon, polyamide, polyester, polyacrylonitrile or polypropylene fibres.ALSO:A composition suitable for treating carpets comprises a particulate inorganic soil retardent substance, e.g. silica, alumina, zirconium oxide, barium sulphate and aluminium silicate, a film-forming substance which is a natural polymeric substance or derivative thereof containing at least one reactive -OH, =NH or -SH group, e.g. starch, starch ethers, such as carboxymethyl cellulose and hydroxyalkyl celluloses, glue, gelatin, casein, alginic acid and its salts, a polyfunctional substance capable of undergoing reaction with the reactive group or groups in the film-forming substance and a mould inhibiting agent, e.g. lauryl dimethyl benzyl ammonium chloride, benzisothiazolone formaldehyde and sodium benzoate.  The soil-retardent substance which may have a particle size of 0.1-50 and the composition may also contain surfactants and water repellent substances, e.g. methylol stearamide, methylene-bis-stearamide and silicones.  The polyfunctional substance may be formaldehyde, acrolein, glyoxal, methylol derivatives of urea, thiourea, dicyandiamide, amides, amines, carbamates, aminotriazines, urons, ureins, ureides, imidazolines, pyrimidones and triazones and lower alkyl ethers thereof, methylol derivatives and their lower alkyl ethers of urea-formaldehyde polycondensates polyacrylamide and addition copolymers containing acrylamide, polyacetals formed from formaldehyde, acetaldehyde, glyoxal, malondialdehyde, succindialdehyde, adipaldehyde, hydroxyadipaldehyde or terephthaldehyde with ethylene glycol, diethylene glycol, glycerol, pentaerythritol or dipentaerythritol, bis-epoxides, cyanuric chloride or bromide, dihalogeno-s-triazine derivatives or epichlorohydrin. The composition may contain an acid catalyst, e.g. ammonium dihydrogen phosphate, ammonium thiocyanate, butanolamine hydrochloride, tartaric acid, maleic acid, zinc nitrate, zinc chloride and magnesium chloride or an alkaline catalyst, e.g. an alkali or alkaline earth metal hydroxide, bicarbonate or carbonate, amines and quaternary ammonium hydroxides.