Patent GB-953155-A (GB)
Title: Process for colouring high molecular organic products with pigment dyestuff of the anthraquinone series
IPC: C09B1/467
Filed: 1962-07-20
Abstract: Viscose, cellulose esters, nitrocellulose lacquers, condensation resins such as aminoplasts, polyesters, epoxy resins, polyurethanes, alkyd resins and polymerization resins such as polyvinyl chloride, polyvinyl acetals, polyolefines such as polyethylene, polypropylene, polystyrene and copolymers thereof with polyesters made from unsaturated dicarboxylic acids and diols, polyacrylates and copolymers thereof are coloured yellow with the pigment of the formula: <FORM:0953155/C3/1> In examples a pigment of the above formula is (2) ground with titanium dioxide and a nitrocellulose lacquer; (3) kneaded with acetylcellulose, salt and diacetone alcohol, the salt and alcohol washed out and the pigment added to an acetylcellulose and acetone spinning composition; (5) ground with sodium 1:11-dinaphthylmethene-2:21-disulphonate and water and the suspension added to a viscose spinning composition; (4) ground with titanium dioxide and an alkyd-melamine stoving enamel; (13) incorporated into polyethylene terephthalate; (1) ground with dioctyl phthalate and mixed with polyvinyl chloride, dioctyl phthalate, cadmium stearate and titanium dioxide; (8) ground with the glycerol ester of hydrogenated colophony and then pasted with toluene to form a colouring agent for lacquers; (11) mixed with high-pressure polyethylene; and (12) "bread-crumbed" with isotactic polypropylene which is then melted.  Specification 350,575 is referred to.ALSO:The invention comprises a pigment of the formula <FORM:0953155/C3/1> having a mean particle diameter not exceeding 3m  and preferably not exceeding 1m .  The pigment is obtained by mechanically treating the crude dye in a roller mill, ball mill, rod mill, colloid mill or kneading apparatus.  Specifications 350,575 and 822,504 are referred to.ALSO:In examples the yellow pigment of the formula:- <FORM:0953155/D1-D2/1> is (6) suspended in an aqueous dyebath containing a copolymer latex made from isobutylacrylate, acrylonitrile, acrylic acid, an emulsion of a methylolmelamine-allyl-ether emulsified with sulphonated castor oil and modified with soya fatty acid, a water-soluble methyl ether of a urea-formaldehyde condensation product having more than 2 mols of formaldehyde per mol of urea and 20% formic acid; cotton is dipped in the bath, dried and cured at 145-150 DEG C.; (7) kneaded with an ethylene oxide/ditertiary butyl-para-cresol addition product and water and the paste mixed with an oil-in-water emulsion containing as inner phase, petroleum hydrocarbon, a styrene-butadiene emulsion copolymer and a butanol solution of a water-insoluble melamine-formaldehyde primary condensate modified with n-butanol and as outer plase an aqueous solution of a non-ionic emulsifier and with ammonium nitrate and water to give a printing paste which prints natural or regenerated cellulose or synthetic fibres with a subsequent heat treatment at 120-150 DEG C.; and (9) ground with aqueous casein solution and a dispersing agent and the paste mixed with a wax emulsion and casein solution to yield a preparation which is mixed with sodium sulphoricinoleate, egg albumin solution and casein solution to a dispersion which is then applied to full chrome grain leather, a levelling coat of the same dispersion is sprayed on, followed by a casein solution and the leather hardened with formaldehyde solution and mechanically glazed and pressed. Specifications 350,575 and 822,504 are referred to.