Patent GB-373233-A (GB)
Title: Improvements in preparation for the treatment of fibrous materials
IPC: D06P1/52
Filed: 1930-11-14
Abstract: Preparations for printing water-soluble colouring materials on, or for discharging dyeings with water-soluble discharge agents from, fibrous organic materials including textiles, leather, paper and cardboard, are made by incorporating the water-soluble colouring materials or discharge agents with aqueous dispersions of water-soluble amorphous polymeric derivatives of carboxylic acids of the acrylic acid series, including the complex polymerization products obtained by simultaneous condensation and polymerization of polymerizable vinyl compounds with the said acrylic acids or with aliphatic dicarboxylic acids containing a double linkage between two carbon atoms, at least one of which is connected with a carboxyl group, e.g. maleic and itaconic acids. The water-soluble polymeric derivatives include the salts of the acids with alkalis, ammonia, water-soluble amines, e.g. alkylolamines and their esters, especially with fatty acids, or with ethylenepolyamines, and also the products from polymerized acrylic nitrile which has been incompletely saponified or saponified with ammonia under pressure.  The polymeric derivatives may be used alone or with other substances, e.g. starch, dextrin, casein, British gum, gum arabic, or tragacanth, for dispersing water-soluble colouring materials, the resulting masses, if desired after drying and redispersing in water, giving solutions and pastes which may be employed as printing pastes or inks.  The polymeric materials may also be employed together with water-soluble plastic, resinous, or tenacious substances, such as inspissated sulphite pulp waste liquor, alkali-casein or water-soluble artificial resins, e.g. the alkali salts of the resins obtainable by the interaction of aldehydes with aromatic carboxylic or sulphonic acids or their derivatives, or with mixtures of phenols and aromatic carboxylic acids, or by treating phenolaldehyde condensation products with halogen fatty acids, with phenolsulphonic acids, or with other aromatic or aliphatic compounds containing exchangeable sulphonic groups, or sulphurized phenols.  In examples (1) the sulphuric ester of the leuco compound of a green dye described in Specification 193,431, [Class 2 (iii), Dyes &c.], is made into a paste with an aqueous solution of the triethanolamine salt of polymerized acrylic acid (made by boiling a solution of acrylic acid with formaldehyde, sulphuric acid and hydrogen peroxide), sodium chlorate, ammonium thiocyanate, ammonium vanadate, and ammonia, and the paste is printed on cotton, steamed, rinsed and soaped, (2) cotton dyed with Oxamine pure blue 6B is printed with a discharge paste containing sodium formaldehydesulphoxylate and the sodium salt of polymerized acrylic acid (made by saponifying polymerized acrylic nitrile, (3) the sulphuric ester of the leuco compound of Brilliant indigo 4B is pasted with thiodiglycol, the sodium salt of polymerized acrylic acid, and starch, the paste is dried, and a solution of the product containing sodium nitrite is printed on chrome tanned leather; the printed leather is then passed through a bath containing sulphuric acid and sodium chloride, (4) wool or cotton is printed with a paste containing Rhodamine 6G extra, thiodiglycol, sodium salt of polymerize acrylic acid, starch, tannin, inspissated sulphite pulp waste liquor and acetic acid, and the print is steamed and treated with tartar emetic solution, (5) an ink for printing paper or cardboard comprises Diamond green G, glycerol, thiodiglycol, ethyl alcohol, starch and the sodium salt of polymerized acrylic acid. Specification 306,116 and 337,737, [both in Class 2 (iii), Dyes &c.], also are referred to.  Reference has been directed by the Comptroller to Specification 351,508.