Patent GB-314451-A (GB)
Title: Improvements in the manufacture and production of coloured compositions or solutions of the same
IPC: D06P1/56
Filed: 1927-12-28
Abstract: 314,451. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Dec. 28, 1927. Dye preparations. -Coloured compositions are made by incorporation into an organic watersoluble resinous or tenacious plastic material, or into a water-soluble substance capable of assuming these properties during the process, if necessary in the presence of a small quantity of water, by means of a kneading and (or) a stretching mechanical treatment, a colouring matter which is practically insoluble in water, in such a manner that the colouring matter is in a practically colloidal condition and does not settle out appreciably from an aqueous solution of the coloured composition. The products may be used for dyeing textiles, including cellulose acetate, for colouring leather and for similar purposes. When plastics are employed which do not flocculate out of their aqueous solutions to any substantial extent or coagulate at the temperature employed in producing prints on textile fabrics, the coloured composition may also be used for printing purposes, completely even prints being obtained. Suitable plastic compositions are water-soluble artificial resins, e.g. the alkali salts of the alkalisoluble artificial resins obtainable by the interaction of aldehydes with aromatic carboxylic acids or sulphonic acids or derivatives thereof, such as carboxylic acids of phenols and their ethers, or with mixtures of phenols and aromatic carboxylic acids, or by treating phenolaldehyde condensation products with halogenated fatty acids or with phenolsulphonic acids such as a naphtholsulphonic acid, or with an aromatic or aliphatic compound containing one or more easily exchangeable sulphonic groups, such as an alkali metal salt of an #-methyl hydroxynaphthalene sulphonic acid (see Specification 250,398), or the sulphurbearing compounds obtainable by the condensation of phenols or their substitution products, such as halogenated phenols or phenolcarboxylic acids, with alkali metal sulphides or polysulphides (with which plastic printing compositions are also obtained), or water soluble caseins (alkali caseates). Products obtainable by heating cyclic resinous substances containing oxygen, such as phenol-formaldehyde condensation products or cumarone, with halogenated aralkylsulphonic acids, such as benzylchloride sulphonic acid, can also be employed. The incorporation of the colouring materials with the plastic materials may be carried out by rolling in a friction roller mill, or by using a high-effect malaxator or kneading machine and (or)' an extrusion press. Small amounts of diluents may be used if desired, such as water or water-soluble organic diluents for example polyhydric alcohols or their monoalkyl ethers, aliphatic oxyalkylamines, and dioxane. Wetting-agents such as turkey-red oil, thickening agents such as British gums, sugars and natural water-soluble gums may also be incorporated. The products obtained may be used as such, or after drying and powdering them. In examples, (1) 1 4-diaminoanthraquinone is mixed with the sodium salt of a condensation product obtained by mixing a phenol-aldehyde condensation product with chloracetic acid, and the mixture is worked in a roller mill with the addition of water, the product is dried and ground and may be used for dyeing or printing acetate silk ; similar products are obtained from the condensation products of phenolsulphonic acids with formaldehyde, or the products obtained by condensing one molecular proportion of a phenol with at least one atomic proportion of sulphur in the presence of alkali, or by treating, for example in accordance with Specification 250,398. a phenol-formaldehyde condensation product with a phenolsulphonic acid or with one of the abovementioned compounds containing easily-exchangeable sulphonic groups; (2) a vat dyestuff powder, such as Indanthrene blue RS, is treated as in example 1; the product dissolves to an almost completely colloidal solution in water and mav be used for dyeing and printing: (3) water-soluble casein (alkali caseate) is kneaded and worked to a thin layer in a roller mill with Lithol red 3BN and water; the product, after addition of plasticizers and preservatives, may be used for colouring leather; (4) 1-amino-4-oxyanthraquinone is kneaded with water-soluble casein, water, and a disinfectant, such as p-chlor-m-cresol, and rolled in a friction mill until a uniform thin film is formed which is then dried and ground: the product dissolves in water to a non-settling solution which may be used for dyeing artificial silk, particularly cellulose acetate silk. Specifications 242,274, [Class 70, Indiarubber &c.], and 247,288 also are referred to.